CN104088694A - Internal combustion engine pressurizing system of turbochargers - Google Patents

Abstract

The invention discloses an internal combustion engine pressurizing system of a plurality of turbochargers and belongs to the field of internal combustion engines. The internal combustion engine pressurizing system comprises an air inlet system and an air outlet system. An inlet of the air inlet system is connected with an air filter. A sectional air inlet pressure boosting device controlled by an air inlet auxiliary control valve is arranged between an outlet, connected with an air inlet part, of the air inlet system and an air inlet part of at least one air cylinder. The rest of outlets, connected with the air inlet part, of the air inlet system are directly and correspondingly connected with inlets of air inlet parts of the rest of the air cylinders one to one; an inlet of the air outlet system is connected with an air outlet pipeline of each cylinder, an outlet of the air outlet system is connected with a main smoke outlet pipe. The internal combustion engine pressurizing system is applied to the internal combustion engines, the universally-acknowledged problems of transient switching of the turbochargers and poor starting and small-load combustion performance of a multi-level turbine pressuring internal combustion engine are solved by at least one air cylinder or all the air cylinders of the internal combustion engines. The internal combustion engine pressurizing system is a revolution for improving the user performance of turbine pressurizing internal combustion engines.

Description

A kind of pressurization system of internal combustion engine of multiple turbosupercharger

Technical field

The present invention relates to turbocharging internal-combustion engines, particularly the internal combustion engine turbocharging system of multiple turbosupercharger.

Background technique

Internal-combustion engine came out over more than 100 year, and its technology obtains rapid progress; Internal-combustion engine adopts turbocharging technology, and power that not only can increasing combustion engine also can reduce fuel oil consumption, the discharge of internal-combustion engine; Therefore, internal-combustion engine adopts turbocharging technology (turbosupercharging comprises in turbosupercharging cold, lower same), and combustion engine powered property, Economy, discharge are all increased, and the particularly raising to high speed power performance, is the revolution in internal combustion engine development history.

Because turbosupercharger is impeller rotation-type machinery, internal-combustion engine is reciprocating mechanism, and the two combination exists a coupling difficult problem; The more and more difficult usability that meets boosting internal combustion engine of single turbosupercharger.

Multiple turbosupercharger are mated with internal-combustion engine, can composition the series and parallel turbo charge system of order turbo charge system (turbosupercharger parallel connection), multi-stage turbocharging system (turbosupercharger series connection) and turbosupercharger.Multiple turbosupercharger can expand the matching range of turbosupercharger and internal-combustion engine or/and further improve the power of internal-combustion engine, but have a recognized technology difficult problem.

Order turbo charge system, the dynamic switching of multiple turbosupercharger, not yet has desirable solution at present.As the order boosting internal combustion engine of two turbosupercharger, two turbosupercharger can expand the matching range of turbosupercharger and internal-combustion engine, significantly improve the low speed power of internal-combustion engine, but the control of its handoff procedure is difficulty quite, and in handoff procedure, easily cause that turbosupercharger easily causes surge, cause combustion engine powered concussion, cause pressurized machine or internal-combustion engine to damage, the utilization scope of order supercharging is dwindled greatly, as current Vehicle Turbocharged internal-combustion engine, order pressurization system is used less (for Vehicular internal combustion engine, current pressurized machine switches operating mode, can't meet Vehicular internal combustion engine to switching the demand of operating mode, in accelerating process, do not allow to accelerate moment of torsion and have sudden change), the handoff procedure of the order pressurization system of current multiple turbosupercharger, requires apart from each other (when desirable switching requires turbosupercharger to switch, internal-combustion engine external characteristics moment of torsion remains unchanged substantially) with required desirable switching of internal-combustion engine, in existing multiple turbosupercharger handoff procedures, by external high-pressure air, combustion motor suction tude is inflated, can make internal-combustion engine Maximum Torque remain unchanged, but now,, high-pressure air in the gas compressor of turbosupercharger, carries out reverse flow simultaneously, causing a large amount of high-pressure airs to overflow in a large number with gas compressor can not normally move, thereby makes this scheme practicability poor.

The two-stage supercharging internal-combustion engine of two turbosupercharger, theoretically, single-stage turbocharging can make power of IC engine increase 2-3 doubly, two-stage supercharging (reduces compression ratio by reducing compression ratio, the maximum outbreak pressure that can make internal-combustion engine bear is the same with single stage supercharging, ensureing the reliability of internal-combustion engine) the increased power 4-5 that can make internal-combustion engine is doubly, make boosting internal combustion engine become super boosting internal combustion engine, but two-stage turbine boosting internal combustion engine has generally acknowledged technical barrier: the reduction of compression ratio of internal-combustion engine, difficulty occurs while causing engine starting, idle running and low-load work; Multistage turbine boosting internal combustion engine increased power is larger, and the problem that it starts, the combustion performance of low-load is poor is more outstanding.Current technology, makes two-stage supercharging become comparatively difficulty of super supercharging, makes two-stage supercharging put forward high-power practicability lower; In the time that two-stage supercharging is used for expanding inlet and outlet flow adjustment range, there is equally two pressurized machines and the difficult problem that pressurized machine dynamically switches mutually.

Summary of the invention

The object of this invention is to provide a kind of pressurization system of internal combustion engine of multiple turbosupercharger, the large recognized technology difficult problem of torque ripple while solving multiple turbosupercharger transient states switching; Make it in the time of starting, idle running and low-load work, there is good performance characteristic; Internal-combustion engine output torque in multiple turbosupercharger handoff procedures is steady.

For achieving the above object, technological scheme of the present invention is: a kind of pressurization system of internal combustion engine of multiple turbosupercharger, comprise two turbosupercharger, and each turbosupercharger is made up of a gas compressor and a turbo machine respectively; Described gas compressor is connected in gas handling system, and described turbo machine is connected in vent systems; The import of described gas handling system communicates with atmosphere through air-strainer; The import of described vent systems is connected with the air outlet flue of every cylinder, and the outlet of vent systems is connected with smoke evacuation house steward; The outlet of described gas handling system is connected with the import of the intake duct of every cylinder, the intake duct of at least one cylinder is also connected with pressure lifting device, the Fighter Inlet position of connection corresponding to pressure lifting device is provided with two groups of in parallel air inlet aux. control valves, described air inlet aux. control valve the different air inlet durations first, after corresponding intake duct is connected with pressure lifting device with the outlet of gas handling system.

When the present invention works, air inlet aux. control valve be controlled at different air inlet duration first, after corresponding intake duct is connected with pressure lifting device with the outlet of gas handling system.Making the gas that enters cylinder divide two air inlet durations, is respectively first, second air inlet duration, and the first air inlet duration, the second air inlet duration was rear front.Multiple pressurized machines are in handoff procedure, the air that the gas compressor of multiple turbosupercharger provides, enter cylinder in the first air inlet duration, and the forced air providing by corresponding pressure lifting device, to enter cylinder in the second air inlet duration, due to the boost in pressure effect of subsection-inlet, not only ensure that every recycle gas enters cylinder by internal-combustion engine usage requirement, ensure the stability of cylinder of internal-combustion engine output torque, and make second segment enter the air of cylinder, the adjusting of the first stage air that the gas compressor of turbosupercharger is provided is without impact, on the Air Flow of gas compressor without impact, thereby ensure the smooth switching of turbosupercharger at transient working condition, and can be reduced in switching or adjustment process, to switching or regulating corresponding time requirement, the switching of these multiple turbosupercharger, can be the mutual switching of multiple turbosupercharger of order pressurization system, or the self-regulation of Two Stage Turbocharging System, or the mutual conversion of Two Stage Turbocharging System and order pressurization system.By this technological scheme, can make internal-combustion engine in the time of starting, idle running and low-load work, there is good performance characteristic; Internal-combustion engine output torque in multiple turbosupercharger handoff procedures is steady.

As a further improvement on the present invention, described air inlet aux. control valve comprises internal rotor, be sleeved on the external rotor on internal rotor and be positioned at the valve body outside external rotor, internal rotor hollow and one end sealing, the other end is opening end, internal rotor, the side of external rotor and valve body offers respectively corresponding valve port, valve port number equates with the cylinder number of Bonding pressure lifting device, the closed end of internal rotor connects a driven external gear through rotating shaft, the respective end of external rotor is provided with driven internal gear, one driving gear that is arranged on end part of driving shaft is meshed with driven external gear and driven internal gear respectively, described transmission shaft and internal-combustion engine timing gear are in transmission connection, the auxiliary open phase of controlling of air inlet that same cylinder is corresponding overlapped in the respective cylinder charging stage.When rotating shaft is rotated, internal rotor, external rotor phase reverse rotation, can realize the corresponding valve port of quick opening and closing, in the time that the valve port of the valve port on internal rotor, external rotor and valve body side is overlapping, can realize chronologically the air inlet of respective cylinder.

As a further improvement on the present invention, described turbosupercharger comprises large turbosupercharger and little turbosupercharger, and little turbosupercharger is made up of little gas compressor and little turbo machine, and large turbosupercharger is made up of large gas compressor and large turbo machine; Little gas compressor is connected with air-strainer with the import of large gas compressor, and little gas compressor and large blower outlet are connected in the import of intercooler in parallel, is respectively equipped with air inlet and opens and closes valve between little gas compressor, large gas compressor and intercooler; The outlet of intercooler is connected with each cylinder intake duct through intake manifold; The inlet parallel of described little turbo machine and large turbo machine is connected on exhaust manifold, exhaust manifold is connected with every cylinder air outlet flue, between the import of little turbo machine, large turbo machine and exhaust manifold, be respectively equipped with exhaust and open and close valve, the outlet of little turbo machine, large turbo machine is connected with smoke evacuation house steward.In this technological scheme, air inlet aux. control valve can have two, be respectively the first air inlet aux. control valve and the second air inlet aux. control valve, the second air inlet aux. control valve is arranged between pressure lifting device and the intake duct of arbitrary cylinder, and the first air inlet aux. control valve is arranged between intake manifold and the intake duct of described arbitrary cylinder.Further, described air inlet aux. control valve comprises the first air inlet aux. control valve and the second air inlet aux. control valve, the second air inlet aux. control valve is arranged between pressure lifting device and the intake duct of each cylinder, the first air inlet aux. control valve is arranged between intake manifold and the intake duct of described each cylinder, the valve port number of the first air inlet aux. control valve and the second air inlet aux. control valve equates with total cylinder number, and each valve port one by one correspondence is connected to the import of corresponding intake duct.

Further improve as the present invention, each cylinder air outlet flue is connected with two groups of exhaust Auxiliary valvess in parallel; Described exhaust aux. control valve is identical with air inlet aux. control valve structure; The valve port number of exhaust aux. control valve equate with total cylinder number and with each cylinder air outlet flue corresponding connection one by one, wherein one group of auxiliary opening end of controlling of exhaust is connected with exhaust manifold, and the opening end of another group exhaust aux. control valve is directly connected smoke evacuation house steward through auxiliary exhaust pipe.

Improve as the present invention, described turbosupercharger comprises rudimentary turbosupercharger and senior turbosupercharger, and rudimentary turbosupercharger is made up of rudimentary gas compressor and rudimentary turbo machine, and senior turbosupercharger is made up of senior gas compressor and senior turbo machine; The import of rudimentary gas compressor is connected with air-strainer, and rudimentary gas compressor is connected with senior gas compressor through rudimentary intercooler, and senior gas compressor is connected with intake manifold through senior intercooler; The air outlet flue of every cylinder is connected with smoke evacuation house steward through exhaust manifold, high stage turbine, low stage turbine successively.In this programme, the air outlet flue of described each cylinder is also connected with auxiliary exhaust pipe one and auxiliary exhaust pipe two, the rudimentary turbine inlet of auxiliary exhaust Guan Yiyu is connected, auxiliary exhaust Guan Eryu smoke evacuation house steward is connected, between described exhaust manifold, auxiliary exhaust pipe one, the each cylinder of auxiliary exhaust Guan Eryu, be respectively equipped with exhaust aux. control valve, described exhaust aux. control valve is identical with air inlet aux. control valve structure; The valve port number of exhaust aux. control valve equate with total cylinder number and with each cylinder air outlet flue corresponding connection one by one, wherein one group of auxiliary opening end of controlling of exhaust is connected with exhaust manifold, the opening end of another group exhaust aux. control valve is connected with auxiliary exhaust pipe one, also has the opening end of one group of exhaust aux. control valve to be connected with auxiliary exhaust pipe two.

In the present invention, described pressure lifting device can comprise air compressor, gas receiver, pressure controlled valve, and air compressor outlet connects gas receiver, and the outlet of gas receiver connects corresponding intake duct through pressure controlled valve.Pressure lifting device can also be mechanical supercharger, and the outlet of mechanical supercharger connects corresponding intake duct, and the import of mechanical supercharger connects the outlet of arbitrary gas compressor.

Brief description of the drawings

The four-stroke three-cylinder diesel order pressurization system schematic diagram of a kind of two turbosupercharger of Fig. 1.

The structural representation of a kind of air inlet aux. control valve of Fig. 2.

Fig. 3 is the M-M sectional view of Fig. 2.

A kind of single cylinder charging stage edged surface value of Fig. 4 and air inlet aux. control valve valve port air inlet duration schematic diagram.

The four-stroke three-cylinder diesel Two Stage Turbocharging System schematic diagram of two turbosupercharger of a kind of optimization of Fig. 5 the present invention.

The structural representation of another air inlet aux. control valve of Fig. 6.

Fig. 7 is the M1-M1 sectional view of Fig. 6.

Fig. 8 is the M2-M2 sectional view of Fig. 6.

Fig. 9 is the M3-M3 sectional view of Fig. 6.

Embodiment

Below in conjunction with accompanying drawing, the present invention is further elaborated, and for convenience of explanation, all embodiments are all using three cylinder four-stroke diesel engines (intake duct of every cylinder) as making specific embodiment.Intake duct, to quartastroke engine, is the gas-entered passageway of engine cylinder head system. to two stroke IC engine, be the gas-entered passageway of internal-combustion engine body side surface.

Embodiment 1

As Fig. 1, it is a kind of four-stroke three-cylinder diesel order pressurization system schematic diagram of two turbosupercharger.Internal-combustion engine is order supercharged diesel engines one little, large two turbosupercharger, and little turbosupercharger is made up of little gas compressor Y1 and little turbo machine W1, and large turbosupercharger is made up of large gas compressor Y2 and large turbo machine W2.Pressurization system comprises gas handling system, vent systems.Gas handling system is by the first front suction tude 11-1, the second front suction tude 11-2, little gas compressor Y1, large gas compressor Y2, the first rear suction tude 20-1, the second rear suction tude 20-2, intercooler 30, the first air inlet opens and closes valve F10-1, the second air inlet opens and closes valve F10-2, intake manifold J1, the first air inlet aux. control valve F1, the second additional-air inlet helps control valve F2, auxiliary inlet manifold J2, the air compressor Y3 being connected with transmission mechanism of internal-combustion engine, gas receiver 40, pressure controlled valve F30, pressure control pipe enters J3 composition, vent systems is opened and closed valve F20-2 and is formed by exhaust manifold 50, little turbo machine W1, large turbo machine W2, first row gas branch pipe P1, second row gas branch pipe P2, the first exhaust keying valve F20-1, the second exhaust.

The import 11-1 of the first front suction tude is connected with an air-strainer 10-1, the import of the second front suction tude 11-2 is connected with another air-strainer 10-2, the outlet of the first front suction tude 11-1 is connected with the import of little gas compressor Y1, the outlet of the second front suction tude 11-2 is connected with the import of large gas compressor Y2, the outlet of little gas compressor Y1 is connected with the import of the first rear suction tude 20-1, the outlet of large gas compressor Y2 is connected with the import of the second rear suction tude 20-2, intercooler 30 has first, the second import, the outlet of the first rear suction tude 20-1 is connected with the first import of intercooler 30, the first import of intercooler is provided with the first air inlet and opens and closes valve F10-1, the outlet of the second rear suction tude 20-2 is connected with the second import of intercooler 30, the second import of intercooler 30 is provided with the second air inlet and opens and closes valve F10-2, the import of intake manifold J1 is connected with the outlet of intercooler 30, an outlet of intake manifold J1 is connected with the import of the first air inlet aux. control valve F1, the outlet of the first air inlet aux. control valve is connected with the intake duct of the first cylinder, two outlets of residue of intake manifold J1 are respectively directly with second, the intake duct of the 3rd cylinder is connected, the import of auxiliary inlet manifold J2 is connected with air-strainer 10-3, the outlet of auxiliary inlet manifold J2 is connected with the import of air compressor Y3, the outlet of air compressor Y3 is connected with the import of gas receiver 40, the outlet of gas receiver 40 is connected with the import of pressure controlled valve F30, the outlet of pressure controlled valve F30 is connected with the import of pressure control pipe J4, the outlet of pressure control pipe J4 helps the import of control valve F2 to be connected with the second additional-air inlet, the second additional-air inlet helps the outlet of control valve F2 to be connected with the intake duct of the first cylinder, first, keying timing and the intake duct being attached thereto of the second air inlet aux. control valve make intake process of every circulation of this cylinder be divided into two intake processes that order is connected, it was respectively the first air inlet duration, the second air inlet duration.

The import of exhaust manifold 50 is connected with every cylinder air outlet flue, one outlet of exhaust manifold 50 is connected with the import of first row gas branch pipe P1, the import of first row gas branch pipe P1 is provided with the first exhaust and opens and closes valve F20-1, another outlet of exhaust manifold P1 is connected with the import of second row gas branch pipe P2, and the import of second row gas branch pipe P2 is provided with the second exhaust and opens and closes valve F20-2; The outlet of first row gas branch pipe P1 is connected with the import of little turbo machine W1, and the outlet of second row gas branch pipe P2 is connected with the import of large turbo machine W2; The outlet of little turbo machine W1 is connected with a smoke evacuation house steward PZ1, and the outlet of large turbo machine W2 is connected with another smoke evacuation house steward PZ2.

See Fig. 2, Fig. 3 taking an air inlet aux. control valve F1() as example, air inlet aux. control valve F2 is identical with air inlet aux. control valve F1 structure.Air inlet aux. control valve F1 comprises internal rotor 101, be sleeved on the external rotor 102 on internal rotor and be positioned at the valve body 103 outside external rotor, internal rotor 101 hollows and one end sealing, the other end is opening end, opening end is inlet end, internal rotor 101, the side of external rotor 102 and valve body 103 offers respectively 1 group of corresponding valve port 1-1, valve port 1-1 is connected with a cylinder intake duct, the closed end warp beam of internal rotor 101 connects a driven external gear 104, the respective end of external rotor 102 is provided with driven internal gear 105, one is arranged on the corresponding input shaft of input shaft 106(is respectively 106-n, n is the numbering of air inlet aux. control valve) driving gear 107 of end is meshed with driven external gear and driven internal gear respectively, input shaft and timing gear are in transmission connection.Relative position by valve port position changes, and can realize the open and close of air inlet aux. control valve valve port, 1 group of valve port in every air inlet aux. control valve is corresponding with the phase place of the valve timing of corresponding intake valve, internal rotor rotating speed: the rotating speed of external rotor: internal combustion (IC) engine camshaft rotating speed=2:1:1, for realizing the fast opening and closing of air inlet aux. control valve, described internal rotor rotating speed: the rotating speed of external rotor: internal combustion (IC) engine camshaft rotating speed can be 5:1:1, 4:1:1, 3:1:1, 2:1:1, choose internal rotor rotating speed: the rotating speed of external rotor: internal combustion (IC) engine camshaft rotating speed=3:1:1, for no other reason than that, meeting under the condition of each air inlet aux. control valve valve port angle, wish internal rotor, external rotor rotating speed is in The faster the better, the rotating speed of external rotor is larger, all single valve ports (as valve port 1-1) keying speed is faster, but valve port 1-1 is less from being opened to the adjustable range (angle) of closing, after internal rotor 101, external rotor 102 rotating speeds are determined, valve port angle [alpha] 1, external rotor 102 valve port angle betas 1 on internal rotor 101, determined that air inlet aux. control valve valve port 1-1 is from being opened to the angular range of closing, the length L 1 of valve port 1-1 also has influence on valve port 1-1 and opens cross section simultaneously, and then affects the setting (certainly also can pass through an air inlet duration of two valve port control, can further accelerate internal rotor, external rotor rotating speed) of keying speed, the open phase of the adjacent two air inlet durations that the order of the first cylinder is opened overlaps.

Fig. 4 is charging stage edged surface value and the air inlet aux. control valve valve port air inlet duration schematic diagram of single-cylinder engine, and this explanation is equally applicable to other internal-combustion engine.Wherein:

θ 1 represents the differential seat angle that the air inlet duration of IO Intake Valve Opens and air inlet aux. control valve valve port 1-1 opens; θ 2 represents the differential seat angle that the air inlet duration of IO Intake Valve Opens and air inlet aux. control valve valve port 1-2 opens; θ 4 represents that the first air inlet duration of air inlet aux. control valve valve port 1-1 is from being opened to the angle of closing, and makes the air of the air pressure power that the gas compressor of turbosupercharger provides enter cylinder; θ 5 represents that the second air inlet duration of air inlet aux. control valve valve port 1-2, from being opened to the angle of closing, makes the high-pressure air that pressure control pipe provides enter cylinder.According to the use of boosting internal combustion engine, can be determined by test the angle of θ 1, θ 2, θ 4, θ 5.

When the first cylinder working, two air inlet aux. control valves of the first cylinder are divided into 2 the complete intake process of the first cylinder intake duct the short air inlet duration overlapping, that be connected successively; Relative position by valve port position changes, can realize the open and close of air inlet aux. control valve valve port, make high-pressure air (high-pressure air can be regulated by pressure controlled valve F30 according to internal-combustion engine applying working condition at the pressure of pressure control pipe) that air that the gas compressor of turbosupercharger provides provides from pressure control pipe respectively two different air inlet durations, first,, enter cylinder by intake duct, when guarantee enters the air quantity of cylinder, avoid the reverse interference of the gas compressor of high-pressure air to turbosupercharger.When the gas-entered passageway of second, third cylinder is worked, the air that the gas compressor of turbosupercharger is provided enters cylinder in a complete intake process.

Gas handling system, vent systems are in the time of stable state low cruise, the first air inlet opens and closes valve F10-1, the first exhaust opens and closes valve F20-1 standard-sized sheet, the second air inlet opens and closes valve F10-2, the second exhaust opens and closes valve F20-2 and closes, large turbo machine W2, large gas compressor Y2 quit work, and large turbosupercharger quits work, air enters little gas compressor Y1 by air-strainer 10-1 by the first front suction tude 11-1, and the hot air suction tude 20-1 after first after little gas compressor Y1 pressurization enters intercooler 30, be provided with first cylinder of pressure lifting device of subsection-inlet of air inlet aux. control valve control, through the cooling air of intercooler 30 through intake manifold J1, enter the first cylinder through the first air inlet aux. control valve F1 in the first air inlet duration, air by air-strainer 10-3 by auxiliary inlet manifold J2 through the air compressor Y3 laggard gas receiver 40 that pressurizes, the high-pressure air of gas receiver 40 regulates (provide and enter the suction pressure that the first cylinder is suitable) by the pressure of pressure controlled valve F30, through pressure control pipe J3, help control valve F2 to enter the first cylinder in the second air inlet duration through the second additional-air inlet, owing to now only having little turbocharger operation, the flow area of little turbo machine W1 is less, waste gas has enough energy to make little turbo machine W1, little turbo machine W1 provides enough power to little gas compressor Y1, little gas compressor Y1 provides the air of enough pressure that the first cylinder is provided in the first air inlet duration, thereby make to be provided by gas receiver 40, through pressure control pipe J3, help air that control valve F2 enters the first cylinder high-pressure air in the second air inlet duration seldom or do not have through the second additional-air inlet, also can make the first cylinder that enough moments of torsion are provided, at common second, third cylinder gas-entered passageway, through the cooling air of intercooler 30 through intake manifold J1, enter second, third cylinder in a complete intake process, owing to now only having little turbocharger operation, the flow area of little turbo machine W1 is less, waste gas has enough energy to provide enough power to little gas compressor Y1 to little turbo machine W1, little turbo machine W1, little gas compressor Y1 provides the air of enough pressure that second, third cylinder is provided in a complete intake process, makes second, third cylinder that enough moments of torsion are provided.

When gas handling system, vent systems are moved in middling speed, the second air inlet opens and closes valve F10-2, the second exhaust opens and closes valve F20-2 standard-sized sheet, the first air inlet opens and closes valve F10-1, the first exhaust opens and closes valve F20-1 and closes, and little turbo machine W1, little gas compressor Y1 quit work, and little turbosupercharger quits work, air enters large gas compressor Y2 by air-strainer 10-2 by the first front suction tude 11-2, and the hot air suction tude 20-2 after second after large gas compressor Y2 pressurization enters intercooler 30, be provided with first cylinder of pressure lifting device of subsection-inlet of air inlet aux. control valve control, through the cooling air of intercooler 30 through intake manifold J1, enter the first cylinder through the first air inlet aux. control valve F1 in the first air inlet duration, air by air-strainer 10-3 by auxiliary inlet manifold J2 through the air compressor Y3 laggard gas receiver 40 that pressurizes, the high-pressure air of gas receiver 40 regulates (provide and enter the suction pressure that the first cylinder is suitable) by the pressure of pressure controlled valve F30, through pressure control pipe J3, help control valve F2 to enter the first cylinder in the second air inlet duration through the second additional-air inlet, owing to now only having large turbocharger operation, now there is the energy of enough waste gas to large turbo machine W2, large turbo machine W2 provides enough power to large gas compressor Y2, large gas compressor Y2 the first air inlet duration provide enough pressure air (air quantity now during with low speed compared with, more) the first cylinder is provided, thereby make to be provided by gas receiver 40, through pressure control pipe J3, help air that control valve F2 enters the first cylinder high-pressure air in the second air inlet duration seldom or do not have through the second additional-air inlet, also can make the first cylinder that enough moments of torsion are provided, at common second, third cylinder gas-entered passageway, through the cooling air of intercooler 30 through intake manifold J1, enter second, third cylinder in a complete intake process, owing to now only having large turbocharger operation, the energy that now has enough waste gas provides enough power to large gas compressor Y2 to large turbo machine W2, large turbo machine W1, large gas compressor Y2, providing the air of enough pressure that second, third cylinder is provided in a complete intake process, makes second, third cylinder that enough moments of torsion are provided.

Gas handling system, vent systems are in the time of stable state high speed operation, first, second air inlet opens and closes valve, first, second exhaust opens and closes valve standard-sized sheet, air enters little gas compressor Y1 by air-strainer 10-1 by the first front suction tude 11-1, and the hot air suction tude 20-1 after first after little gas compressor Y1 pressurization enters intercooler 30, air enters large gas compressor Y2 by air-strainer 10-2 by the first front suction tude 11-2, and the hot air suction tude 20-2 after second after large gas compressor Y2 pressurization enters intercooler 30, be provided with first cylinder of pressure lifting device of subsection-inlet of air inlet aux. control valve control, through the cooling air of intercooler 30 through intake manifold J1, enter the first cylinder through the first air inlet aux. control valve F1 in the first air inlet duration, air by air-strainer 10-3 by auxiliary inlet manifold J2 through the air compressor Y3 laggard gas receiver 40 that pressurizes, the high-pressure air of gas receiver 40 regulates (provide and enter the suction pressure that the first cylinder is suitable) by the pressure of pressure controlled valve F30, through pressure control pipe J3, help control valve F2 to enter the first cylinder in the second air inlet duration through the second additional-air inlet, large owing to now having, little turbosupercharger is worked simultaneously, the flow area maximum of the large little turbo machine W1 of turbo machine W2+, can pass through more waste gas, waste gas has enough energy to large turbo machine W2, little turbo machine W1, large turbo machine W2, little turbo machine W1 provides enough power to large gas compressor Y2, little gas compressor Y1, large gas compressor Y2, little gas compressor Y1 provides the air of enough pressure that the first cylinder is provided in the first air inlet duration, thereby make to be provided by gas receiver 40, through pressure control pipe J3, help air that control valve F2 enters the first cylinder high-pressure air in the second air inlet duration seldom or do not have through the second additional-air inlet, also can make the first cylinder that enough moments of torsion are provided, common second, the 3rd cylinder gas-entered passageway, through the cooling air of intercooler 30 through intake manifold J1, in a complete intake process, enter second, the 3rd cylinder, due to now large, little turbosupercharger is worked simultaneously, the flow area maximum of the large little turbo machine W1 of turbo machine W2+, can pass through more waste gas, waste gas has enough energy to large turbo machine W2, little turbo machine W1, large turbo machine W2, little turbo machine W1 provides enough power to large gas compressor Y2, little gas compressor Y1, large gas compressor Y2, little gas compressor Y1 provides the air of enough pressure to provide second in a complete intake process, the 3rd cylinder, make second, the 3rd cylinder provides enough moments of torsion.

Gas handling system, vent systems low speed to middling speed switch mutually or middling speed to switch mutually at a high speed or low speed when switching mutually at a high speed, in the time of switching point rotary speed working:

First, second air inlet opens and closes valve, first, second exhaust opens and closes valve standard-sized sheet, air enters little gas compressor Y1 by air-strainer 10-1 by the first front suction tude 11-1, and the hot air suction tude 20-1 after first after little gas compressor Y1 pressurization enters intercooler 30, air enters large gas compressor Y2 by air-strainer 10-2 by the first front suction tude 11-2, and the hot air suction tude 20-2 after second after large gas compressor Y2 pressurization enters intercooler 30, be provided with first cylinder of pressure lifting device of subsection-inlet of air inlet aux. control valve control, through the cooling air of intercooler 30 through intake manifold J1, enter the first cylinder through the first air inlet aux. control valve F1 in the first air inlet duration, air by air-strainer 10-3 by auxiliary inlet manifold J2 through the air compressor Y3 laggard gas receiver 40 that pressurizes, the high-pressure air of gas receiver 40 regulates (provide and enter the suction pressure that the first cylinder is suitable) by the pressure of pressure controlled valve F30, through pressure control pipe J3, help control valve F2 to enter the first cylinder in the second air inlet duration through the second additional-air inlet, large owing to now having, little turbosupercharger is worked simultaneously, the flow area maximum of the large little turbo machine W1 of turbo machine W2+, can pass through more waste gas, no matter waste gas has does not have enough energy to large turbo machine W2, little turbo machine W1, large turbo machine W2, little turbo machine W1 can provide enough power to large gas compressor Y2, little gas compressor Y1, large gas compressor Y2, whether little gas compressor Y1 can provide the air of enough pressure that the first cylinder is provided in the first air inlet duration, by what provided by gas receiver 40, through pressure control pipe J3, help control valve F2 to enter the guarantee of the air quantity of the first cylinder high-pressure air in the second air inlet duration through the second additional-air inlet, when making the first cylinder that enough moment of torsion is provided, the high-pressure air that gas receiver 40 provides is to greatly, the proper flow of little gas compressor is all without impact, common second, the 3rd cylinder gas-entered passageway, through the cooling air of intercooler 30 through intake manifold J1, in a complete intake process, enter second, the 3rd cylinder, due to now large, little turbosupercharger is worked simultaneously, the flow area maximum of the large little turbo machine W1 of turbo machine W2+, can pass through more waste gas, when waste gas does not have enough energy to large turbo machine W2, when little turbo machine W1, large turbo machine W2, little turbo machine W1 can not provide enough power to large gas compressor Y2, little gas compressor Y1, large gas compressor Y2, little gas compressor Y1, in a complete intake process, can not provide the air of enough pressure to provide second, the 3rd cylinder, make second, the 3rd cylinder can not provide enough moments of torsion.

In the time that internal-combustion engine is crossed switching point rotating speed, gas handling system, vent systems are carried out according to described low speed above, middling speed, mode of operation at a high speed, and the exhaust of controlling the turbosupercharger of not working opens and closes valve, air inlet and opens and closes valve and open and close and close simultaneously.

The present embodiment, be provided with first cylinder of pressure lifting device of subsection-inlet of air inlet aux. control valve control, in the time that internal-combustion engine rotational speed changes, can ensure that the first cylinder can provide enough moments of torsion at the switching point of multiple turbosupercharger, and can make second segment enter the air of cylinder, the adjusting of the first stage air that the gas compressor of turbosupercharger is provided is without impact, on the Air Flow of gas compressor without impact, thereby ensure the smooth switching of turbosupercharger at transient working condition, and can be reduced in switching or adjustment process, to switching the corresponding requirement of adjusting time, use reliable pneumatic control valve, replace the more expensive electric control valve of price.The present embodiment, is provided with the first cylinder of the pressure lifting device of the subsection-inlet of air inlet aux. control valve control, and the ability of enough moments of torsion can be provided at the switching point of multiple turbosupercharger, obviously be better than second, third cylinder of normal gas-entered passageway; Be the present embodiment, make a cylinder of internal-combustion engine solve the recognized technology difficult problem that multiple turbosupercharger transient states are switched.

In the present embodiment, optimized project is that the residue that gas handling system is connected with air inlet component exports the subsection-inlet pressure lifting device that is also all provided with the control of air inlet aux. control valve between second, third cylinder intake duct, can make the switching point of whole internal-combustion engine in multiple turbosupercharger, output torque has smooth-going stability, be optimized project embodiment, make internal-combustion engine solve the recognized technology difficult problem that multiple turbosupercharger transient states are switched.

The present embodiment, the switching point of two turbosupercharger, not only can the most simply switch according to internal-combustion engine rotational speed, also can switch according to the arteries and veins such as rotating speed, load spectrum, further improves the part load performance of boosting internal combustion engine.

For the internal-combustion engine that need to control air fuel ratio, as petrol engine: can flow control valve be installed at the present embodiment intake manifold J1 import position, this flow control valve is closure; Pressure controlled valve F30 also changes to another flow control valve, and another flow control valve is also closure.

The present embodiment is equally applicable to a cylinder the internal-combustion engine of multiple intake ducts.Multiple intake ducts for a cylinder, as two intake ducts, multiple intake ducts can be treated as one, only need to lengthen the length L 1 of valve port 1-1, the aperture arrangement length that meets two intake ducts can (can increase stiffening rib in the intermediate portion of valve port 1-1 certainly, the corresponding position of stiffening rib is the position that separates of two intake ducts, in fact now large valve port 1-1 cutting apart by stiffening rib, there are two valve ports, just the keying phase place of two valve ports is just the same, connects respectively two intake ducts of a cylinder).

The present embodiment is equally applicable to two-stroke order pressurization system, only the intake duct in the gas-entered passageway of quartastroke engine need be changed to the intakeport of two stroke IC engine.

Input shaft 106 in the present embodiment can be in transmission connection by angular advance device and internal-combustion engine timing gear, thereby optimizes the opening time of first, second air inlet duration.

The intercooler 30 of the present embodiment can be removed, and has the pressurization system of intercooler to develop into the pressurization system without intercooler, and the air inflow that is whole order pressurization system declines to some extent.

Import the second exhaust that second import the second air inlet of the intercooler of the present embodiment opens and closes valve F10-2, second row gas branch pipe opens and closes valve F20-2, can remove, only little turbosupercharger is carried out to start and stop switching, only first import the first air inlet is opened and closed the import first exhaust keying valve F20-1 start and stop switching of valve F10-1, first row gas branch pipe, now, the flow adjustment range of whole order pressurization system reduces, and regulation structure is simplified with strategy; In the time that two turbosupercharger are equally big or small, the flow adjustment range maximum of whole order pressurization system.

The present embodiment improvement project is, between air inlet Auxiliary valves F1 and air inlet Auxiliary valves F2 import position, be provided with a flow breathing pipe, the intermediate portion of flow breathing pipe is provided with one-way valve, in the time that the pressure at air inlet Auxiliary valves F1 import position is greater than air inlet Auxiliary valves F2 import position, one-way valve opens, made for the second duration also can utilize the pressure air of the energy raising of waste gas, reduced the high-pressure air use amount that gas receiver provides.

Embodiment 2

As Fig. 5, it is a kind of four-stroke three-cylinder diesel Two Stage Turbocharging System schematic diagram of two turbosupercharger of optimization.Internal-combustion engine is the two-stage supercharging diesel engine of rudimentary, senior two turbosupercharger, and rudimentary turbosupercharger is made up of rudimentary gas compressor and rudimentary turbo machine.Pressurization system comprises gas handling system, vent systems.

Gas handling system helps control valve F2, auxiliary inlet manifold J2, dynamoelectric compressor Y3, pressure control pipe J3 to form by rudimentary suction tude 12, rudimentary gas compressor Y1, rudimentary steam outlet pipe 13, rudimentary intercooler 30-1, senior suction tude 14, senior gas compressor Y2, senior steam outlet pipe 15, senior intercooler 30-2, intake manifold J1, the first air inlet aux. control valve F1, the second additional-air inlet; Vent systems is made up of the first exhaust Auxiliary valves F4, the second exhaust Auxiliary valves F5, the 3rd exhaust Auxiliary valves F6, first row gas branch pipe P1, second row gas branch pipe P2, the 3rd exhaust branch pipe P3, high stage turbine W2, low stage turbine W1.

The import of rudimentary suction tude 12 is connected with air-strainer 10, the outlet of rudimentary suction tude 12 is connected with the import of rudimentary gas compressor Y1, the outlet of rudimentary gas compressor Y1 is connected with the import of rudimentary steam outlet pipe 13, the outlet of rudimentary steam outlet pipe 13 is connected with the import of rudimentary intercooler 30-1, the outlet of rudimentary intercooler 30-1 is connected with the import of senior suction tude 14, the outlet of senior suction tude 14 is connected with the import of senior gas compressor Y2, the import of the senior steam outlet pipe 15 of outlet of senior gas compressor Y2 is connected, the outlet of senior steam outlet pipe 15 is connected with the import of senior intercooler 30-2, the import of intake manifold J1 is connected with the outlet of senior intercooler 30-2, the outlet of intake manifold J1 is connected with the import of the first air inlet aux. control valve F1, the outlet of the first air inlet aux. control valve F1 is connected with the intake duct of each cylinder, the import of auxiliary inlet manifold J2 is connected with the outlet of senior gas compressor Y1, the import of the outlet dynamoelectric compressor Y3 of auxiliary inlet manifold J2 is connected, dynamoelectric compressor Y3 with outlet be connected with the import of pressure control pipe J3, the outlet of pressure control pipe J3 helps the import of control valve F2 to be connected with the second additional-air inlet, the second additional-air inlet helps the outlet of control valve and the intake duct of each cylinder to be connected, first, keying timing and the air inlet system being attached thereto of the second air inlet aux. control valve make intake process of every circulation of each cylinder be divided into two intake processes that order is connected, it was respectively the first air inlet duration, the second air inlet duration.

The import of the first exhaust Auxiliary valves F4, the second exhaust Auxiliary valves F5, the 3rd exhaust Auxiliary valves F6 is connected with every cylinder air outlet flue, the outlet of the first exhaust Auxiliary valves F4 is connected with the import of first row gas branch pipe P1, the outlet of the second exhaust Auxiliary valves F5 is connected with the import of second row gas branch pipe P2, the outlet of the 3rd exhaust Auxiliary valves F6 is connected with the import of the 3rd exhaust branch pipe P4, the outlet of first row gas branch pipe P1 is connected with the import of high stage turbine W1, the outlet of second row gas branch pipe P2 is connected with the import of low stage turbine W2, the outlet of high stage turbine W1 is connected with the import of low stage turbine W2 simultaneously, the outlet of the 3rd exhaust branch pipe P3 is connected with smoke evacuation house steward PZ2, the outlet of low stage turbine is connected with smoke evacuation house steward PZ1, keying timing and the air outlet flue being attached thereto of first, second, third exhaust aux. control valve make exhaust process of every circulation of the each cylinder of internal-combustion engine be divided into three exhaust processes that order is connected, and are respectively the first exhaust duration, the second exhaust duration, the 3rd exhaust process, described exhaust aux. control valve comprises internal rotor, be sleeved on the external rotor on internal rotor and be positioned at the valve body outside external rotor, internal rotor hollow and one end sealing, the other end is opening end, opening end is connected with the import of exhaust manifold, internal rotor, the side of external rotor and valve body offers respectively corresponding valve port, the number of valve port equates and is connected respectively respective row air flue with the air outlet flue number of internal-combustion engine, the closed end of internal rotor connects a driven external gear through rotating shaft, the respective end of external rotor is provided with driven internal gear, one driving gear that is arranged on end part of driving shaft is meshed with driven external gear and driven internal gear respectively, described transmission shaft and internal-combustion engine timing gear are by being in transmission connection, and the centre being in transmission connection is provided with angular advance device, the open phase of adjacent two exhaust durations that the order of each single cylinder is opened overlaps.

See Fig. 6-Fig. 9 taking an air inlet aux. control valve F1() as example, air inlet aux. control valve F2 is identical with air inlet aux. control valve F1 structure; The structure of exhaust aux. control valve similarly, just air inlet, the opposite direction of giving vent to anger.Air inlet aux. control valve F1 comprises internal rotor 101, be sleeved on the external rotor 102 on internal rotor and be positioned at the valve body 103 outside external rotor, internal rotor 101 hollows and one end sealing, the other end is opening end, opening end is inlet end, internal rotor 101, the side of external rotor 102 and valve body 103 offers respectively 3 groups of corresponding valve port 1-1, 2-1, 3-1, valve port 1-1, 2-1, 3-1 is connected with every cylinder intake duct respectively, the closed end warp beam of internal rotor 101 connects a driven external gear 104, the respective end of external rotor 102 is provided with driven internal gear 105, one is arranged on the corresponding input shaft of input shaft 106(is respectively 106-n, n is the numbering of air inlet aux. control valve) driving gear 107 of end is meshed with driven external gear and driven internal gear respectively, input shaft and timing gear are in transmission connection.Relative position by valve port position changes, and can realize the open and close of air inlet aux. control valve valve port; 1 group of valve port in every air inlet aux. control valve is corresponding with the phase place of the valve timing of corresponding intake valve; Internal rotor rotating speed: the rotating speed of external rotor: internal combustion (IC) engine camshaft rotating speed=2:1:1, for realizing the fast opening and closing of air inlet aux. control valve, described internal rotor rotating speed: the rotating speed of external rotor: internal combustion (IC) engine camshaft rotating speed can be 5:1:1,4:1:1,3:1:1,2:1:1, chooses internal rotor rotating speed: the rotating speed of external rotor: internal combustion (IC) engine camshaft rotating speed=3:1:1; The open phase of the adjacent two air inlet durations that the order of the first cylinder is opened overlaps.

Two air inlet aux. control valves of each cylinder are divided into 2 the complete intake process of every cylinder intake duct the short air inlet duration overlapping, that be connected successively; Relative position by valve port position changes, can realize the open and close of air inlet aux. control valve valve port, make high-pressure air (high-pressure air can be regulated by dynamoelectric compressor Y3 according to internal-combustion engine applying working condition at the pressure of pressure control pipe) that air that the gas compressor of turbosupercharger provides provides from pressure control pipe respectively two different air inlet durations, first,, enter cylinder by intake duct, when guarantee enters the air quantity of cylinder, avoid the reverse interference of the gas compressor of high-pressure air to turbosupercharger.

Gas handling system, vent systems is in starting, when little load operation, the import of rudimentary suction tude 12 is connected with air-strainer 10, the outlet of rudimentary suction tude 12 is connected with the import of rudimentary gas compressor Y1, the outlet of rudimentary gas compressor Y1 is connected with the import of rudimentary steam outlet pipe 13, the outlet of rudimentary steam outlet pipe 13 is connected with the import of rudimentary intercooler 30-1, the outlet of rudimentary intercooler 30-1 is connected with the import of senior suction tude 14, the outlet of senior suction tude 14 is connected with the import of senior gas compressor Y2, the import of the senior steam outlet pipe 15 of outlet of senior gas compressor Y2 is connected, the outlet of senior steam outlet pipe 15 is connected with the import of senior intercooler 30-2, the import of intake manifold J1 is connected with the outlet of senior intercooler 30-2, the outlet of intake manifold J1 is connected with the import of the first air inlet aux. control valve F1, the outlet of the first air inlet aux. control valve F1 is connected with the intake duct of each cylinder, the import of auxiliary inlet manifold J2 is connected with the outlet of senior gas compressor Y1, the import of the outlet dynamoelectric compressor Y3 of auxiliary inlet manifold J2 is connected, dynamoelectric compressor Y3 with outlet be connected with the import of pressure control pipe J3, the outlet of pressure control pipe J3 helps the import of control valve F2 to be connected with the second additional-air inlet, the second additional-air inlet helps the outlet of control valve and the intake duct of each cylinder to be connected, first, keying timing and the air inlet system being attached thereto of the second air inlet aux. control valve make intake process of every circulation of each cylinder be divided into two intake processes that order is connected, it was respectively the first air inlet duration, the second air inlet duration, because internal-combustion engine exhaust energy is now less, no matter be senior gas compressor (Y2), or rudimentary gas compressor (Y1), the boost pressure that can provide is all less, the gas pressure of the first air inlet duration that enters cylinder is all lower, and the effect of passing through dynamoelectric compressor boost in pressure of the second air inlet duration, the second air inlet duration entered the air of cylinder, the air heating that meeting enters cylinder to the first air inlet duration, the air of the second duration has carried out precompression outward at cylinder, be actually and improved internal-combustion engine in starting, the actual compression ratio of low-load, compression ratio now can be greater than the actual compression ratio of conventional turbocharging internal-combustion engines, thereby make the starting of two-stage turbine boosting internal combustion engine, low load combustion performance is better than the internal-combustion engine of conventional compression ratio.

The import of the first exhaust Auxiliary valves F4, the second exhaust Auxiliary valves F5, the 3rd exhaust Auxiliary valves F6 is connected with every cylinder air outlet flue, the outlet of the first exhaust Auxiliary valves F4 is connected with the import of first row gas branch pipe P1, the outlet of the second exhaust Auxiliary valves F5 is connected with the import of second row gas branch pipe P2, the outlet of the 3rd exhaust Auxiliary valves F6 is connected with the import of the 3rd exhaust branch pipe P4, the outlet of first row gas branch pipe P1 is connected with the import of high stage turbine W1, the outlet of second row gas branch pipe P2 is connected with the import of low stage turbine W2, the outlet of high stage turbine W1 is connected with the import of low stage turbine W2 simultaneously, the outlet of the 3rd exhaust branch pipe P3 is connected with smoke evacuation house steward PZ2, the outlet of low stage turbine is connected with smoke evacuation house steward PZ1, keying timing and the air outlet flue being attached thereto of first, second, third exhaust aux. control valve make exhaust process of every circulation of the each cylinder of internal-combustion engine be divided into three exhaust processes that order is connected, and are respectively the first exhaust duration, the second exhaust duration, the 3rd exhaust process.

Gas handling system, vent systems is in the time of large load operation, the import of rudimentary suction tude 12 is connected with air-strainer 10, the outlet of rudimentary suction tude 12 is connected with the import of rudimentary gas compressor Y1, the outlet of rudimentary gas compressor Y1 is connected with the import of rudimentary steam outlet pipe 13, the outlet of rudimentary steam outlet pipe 13 is connected with the import of rudimentary intercooler 30-1, the outlet of rudimentary intercooler 30-1 is connected with the import of senior suction tude 14, the outlet of senior suction tude 14 is connected with the import of senior gas compressor Y2, the import of the senior steam outlet pipe 15 of outlet of senior gas compressor Y2 is connected, the outlet of senior steam outlet pipe 15 is connected with the import of senior intercooler 30-2, the import of intake manifold J1 is connected with the outlet of senior intercooler 30-2, the outlet of intake manifold J1 is connected with the import of the first air inlet aux. control valve F1, the outlet of the first air inlet aux. control valve F1 is connected with the intake duct of each cylinder, the import of auxiliary inlet manifold J2 is connected with the outlet of senior gas compressor Y1, the import of the outlet dynamoelectric compressor Y3 of auxiliary inlet manifold J2 is connected, dynamoelectric compressor Y3 with outlet be connected with the import of pressure control pipe J3, the outlet of pressure control pipe J3 helps the import of control valve F2 to be connected with the second additional-air inlet, the second additional-air inlet helps the outlet of control valve F2 and the intake duct of each cylinder to be connected, first, keying timing and the air inlet system being attached thereto of the second air inlet aux. control valve make intake process of every circulation of each cylinder be divided into two intake processes that order is connected, it was respectively the first air inlet duration, the second air inlet duration, due to internal-combustion engine exhaust energy abundance now, senior gas compressor Y2 and rudimentary gas compressor Y1, the sufficient gas that has pressure is provided, make the gas pressure of the first air inlet duration that enters cylinder can meet the requirement of internal-combustion engine, thereby the high-pressure air that enters every cylinder in the second air inlet duration that makes to be provided by dynamoelectric compressor seldom or do not have, and also can make the fine work of internal-combustion engine.

The import of the first exhaust Auxiliary valves F4, the second exhaust Auxiliary valves F5, the 3rd exhaust Auxiliary valves F6 is connected with every cylinder air outlet flue, the outlet of the first exhaust Auxiliary valves F4 is connected with the import of first row gas branch pipe P1, the outlet of the second exhaust Auxiliary valves F5 is connected with the import of second row gas branch pipe P2, the outlet of the 3rd exhaust Auxiliary valves F6 is connected with the import of the 3rd exhaust branch pipe P4, the outlet of first row gas branch pipe P1 is connected with the import of high stage turbine W1, the outlet of second row gas branch pipe P2 is connected with the import of low stage turbine W2, the outlet of high stage turbine W1 is connected with the import of low stage turbine W2 simultaneously, the outlet of the 3rd exhaust branch pipe P3 is connected with smoke evacuation house steward PZ2, the outlet of low stage turbine is connected with smoke evacuation house steward PZ1, keying timing and the air outlet flue being attached thereto of first, second, third exhaust aux. control valve make exhaust process of every circulation of the each cylinder of internal-combustion engine be divided into three exhaust processes that order is connected, and are respectively the first exhaust duration, the second exhaust duration, the 3rd exhaust process.Due to the segmenting function of exhaust, can further improve the efficiency that exhaust energy utilizes; By the dynamic adjustment of exhaust Auxiliary valves, adjustable exhaust gas flow, by the adjusting to exhaust gas flow, has also regulated charge flow rate, thereby has regulated the flow of whole turbo charge system.

Certainly, the outlet that the technical program gas handling system is connected with air inlet component as long as and between the air inlet component of a cylinder, be provided with the pressure lifting device of the subsection-inlet of air inlet aux. control valve control, just can improve the starting of a cylinder, the combustion performance of the little load of part, significantly reduce the discharge of a cylinder of internal-combustion engine (along with Abgasgesetz is more and more tighter, the cold conditions discharge of combustion motor also has strict limit value requirement, as Vehicular internal combustion engine).Optimized project is the pressure lifting device that is provided with the subsection-inlet of air inlet aux. control valve control between all outlet ports that is connected with air inlet component of gas handling system and the air inlet component of every cylinder.

In the present embodiment, internal-combustion engine has solved a recognized technology difficult problem for two-stage turbine boosting internal combustion engine---and the combustion performance of starting, the little load of part is poor.In the time that embodiment is used for expanding flow adjustment range, during as the stopping or starting working of senior turbosupercharger, the technical program makes that the transient state of senior turbosupercharger opens, the stopping time equally, torque output of combustion engine is steady, and the high-pressure air of the second air inlet duration on Two Stage Turbocharging System without impact, its Principles of Regulation are similar to embodiment 1.

For the internal-combustion engine that need to control air fuel ratio, as petrol engine: can respectively a flow control valve be installed at the import position of the first air inlet aux. control valve F1, the second air inlet aux. control valve F2 of the present embodiment, two flow control valves are all closures.

The present embodiment is equally applicable to a cylinder the internal-combustion engine of multiple intake ducts.Multiple intake ducts for a cylinder, as two intake ducts, multiple intake ducts can be treated as one, only need to lengthen the length L 1 of valve port (as valve port 1-1), the aperture arrangement length that meets two intake ducts can (can increase stiffening rib in the intermediate portion of valve port 1-1 certainly, the corresponding position of stiffening rib is the position that separates of two intake ducts, in fact now large valve port 1-1 cutting apart by stiffening rib, there are two valve ports, just the keying phase place of two valve ports is just the same, connects respectively two intake ducts of a cylinder).

The present embodiment is equally applicable to two-stroke order pressurization system, only the intake duct in the gas-entered passageway of quartastroke engine need be changed to the intakeport of two stroke IC engine.

Rudimentary intercooler 30-1, the senior intercooler 30-2 of the present embodiment can partly or entirely remove, and when the pressurization system that has an intercooler develops to the pressurization system without intercooler, the air inflow that is whole pressurization system is progressively declining.

The present embodiment improvement project is, between air inlet Auxiliary valves control valve F1 and air inlet aux. control valve F2 import position, be provided with a flow breathing pipe, the intermediate portion of flow breathing pipe is provided with one-way valve, in the time that the pressure at air inlet Auxiliary valves F1 import position is greater than air inlet Auxiliary valves F2 import position, one-way valve opens, made for the second duration also can utilize the pressure air of the energy raising of waste gas, reduced the high-pressure air use amount that dynamoelectric compressor provides.

The present invention is not limited to above-described embodiment, internal-combustion engine can be four cylinders, six cylinders, eight cylinders etc., both can be four-stroke internal-combustion engine, also can be two stroke internal-combustion engine, turbosupercharger is also not limited to two, can be more, adopt series connection, parallel connection or series parallel connection hybrid mode connect, as long as the intake duct of at least one cylinder is connected with pressure lifting device, the Fighter Inlet position of connection corresponding to pressure lifting device is provided with two groups of air inlet aux. control valves in parallel, air inlet aux. control valve is first in the different air inlet durations, after corresponding intake duct is connected with pressure lifting device with the outlet of gas handling system, meet the pressurization system of internal combustion engine of multiple turbosupercharger of this structure all in protection scope of the present invention.

Claims (10)

1. a pressurization system of internal combustion engine for multiple turbosupercharger, comprises two turbosupercharger, and each turbosupercharger is made up of a gas compressor and a turbo machine respectively; Described gas compressor is connected in gas handling system, and described turbo machine is connected in vent systems; The import of described gas handling system communicates with atmosphere through air-strainer; The import of described vent systems is connected with the air outlet flue of every cylinder, and the outlet of vent systems is connected with smoke evacuation house steward; It is characterized in that: the outlet of described gas handling system is connected with the import of the intake duct of every cylinder, the intake duct of at least one cylinder is also connected with pressure lifting device, the Fighter Inlet position of connection corresponding to pressure lifting device is provided with two groups of in parallel air inlet aux. control valves, described air inlet aux. control valve the different air inlet durations first, after corresponding intake duct is connected with pressure lifting device with the outlet of gas handling system.

2. the pressurization system of internal combustion engine of a kind of multiple turbosupercharger according to claim 1, it is characterized in that: described air inlet aux. control valve comprises internal rotor, be sleeved on the external rotor on internal rotor and be positioned at the valve body outside external rotor, internal rotor hollow and one end sealing, the other end is opening end, internal rotor, the side of external rotor and valve body offers respectively corresponding valve port, valve port number equates with the cylinder number of Bonding pressure lifting device, the closed end of internal rotor connects a driven external gear through rotating shaft, the respective end of external rotor is provided with driven internal gear, one driving gear that is arranged on end part of driving shaft is meshed with driven external gear and driven internal gear respectively, described transmission shaft and internal-combustion engine timing gear are in transmission connection, the auxiliary open phase of controlling of air inlet that same cylinder is corresponding overlapped in the respective cylinder charging stage.

3. the pressurization system of internal combustion engine of a kind of multiple turbosupercharger according to claim 2, it is characterized in that: described turbosupercharger comprises large turbosupercharger and little turbosupercharger, little turbosupercharger is made up of little gas compressor and little turbo machine, and large turbosupercharger is made up of large gas compressor and large turbo machine; Little gas compressor is connected with air-strainer with the import of large gas compressor, and little gas compressor and large blower outlet are connected in the import of intercooler in parallel, is respectively equipped with air inlet and opens and closes valve between little gas compressor, large gas compressor and intercooler; The outlet of intercooler is connected with each cylinder intake duct through intake manifold; The inlet parallel of described little turbo machine and large turbo machine is connected on exhaust manifold, exhaust manifold is connected with every cylinder air outlet flue, between the import of little turbo machine, large turbo machine and exhaust manifold, be respectively equipped with exhaust and open and close valve, the outlet of little turbo machine, large turbo machine is connected with smoke evacuation house steward.

4. the pressurization system of internal combustion engine of a kind of multiple turbosupercharger according to claim 3, it is characterized in that: described air inlet aux. control valve comprises the first air inlet aux. control valve and the second air inlet aux. control valve, the second air inlet aux. control valve is arranged between pressure lifting device and the intake duct of arbitrary cylinder, and the first air inlet aux. control valve is arranged between intake manifold and the intake duct of described arbitrary cylinder.

5. the pressurization system of internal combustion engine of a kind of multiple turbosupercharger according to claim 3, it is characterized in that: described air inlet aux. control valve comprises the first air inlet aux. control valve and the second air inlet aux. control valve, the second air inlet aux. control valve is arranged between pressure lifting device and the intake duct of each cylinder, the first air inlet aux. control valve is arranged between intake manifold and the intake duct of described each cylinder, the valve port number of the first air inlet aux. control valve and the second air inlet aux. control valve equates with total cylinder number, each valve port is the corresponding import that is connected to corresponding intake duct one by one.

6. according to the pressurization system of internal combustion engine of a kind of multiple turbosupercharger described in claim 3-5 any one, it is characterized in that: each cylinder air outlet flue is connected with two groups of exhaust Auxiliary valvess in parallel; Described exhaust aux. control valve is identical with air inlet aux. control valve structure; The valve port number of exhaust aux. control valve equate with total cylinder number and with each cylinder air outlet flue corresponding connection one by one, wherein one group of auxiliary opening end of controlling of exhaust is connected with exhaust manifold, and the opening end of another group exhaust aux. control valve is directly connected smoke evacuation house steward through auxiliary exhaust pipe.

7. the pressurization system of internal combustion engine of a kind of multiple turbosupercharger according to claim 2, it is characterized in that: described turbosupercharger comprises rudimentary turbosupercharger and senior turbosupercharger, rudimentary turbosupercharger is made up of rudimentary gas compressor and rudimentary turbo machine, and senior turbosupercharger is made up of senior gas compressor and senior turbo machine; The import of rudimentary gas compressor is connected with air-strainer, and rudimentary gas compressor is connected with senior gas compressor through rudimentary intercooler, and senior gas compressor is connected with intake manifold through senior intercooler; The air outlet flue of every cylinder is connected with smoke evacuation house steward through exhaust manifold, high stage turbine, low stage turbine successively.

8. the pressurization system of internal combustion engine of a kind of multiple turbosupercharger according to claim 7, it is characterized in that: the air outlet flue of described each cylinder is also connected with auxiliary exhaust pipe one and auxiliary exhaust pipe two, the rudimentary turbine inlet of auxiliary exhaust Guan Yiyu is connected, auxiliary exhaust Guan Eryu smoke evacuation house steward is connected, between described exhaust manifold, auxiliary exhaust pipe one, the each cylinder of auxiliary exhaust Guan Eryu, be respectively equipped with exhaust aux. control valve, described exhaust aux. control valve is identical with air inlet aux. control valve structure; The valve port number of exhaust aux. control valve equate with total cylinder number and with each cylinder air outlet flue corresponding connection one by one, wherein one group of auxiliary opening end of controlling of exhaust is connected with exhaust manifold, the opening end of another group exhaust aux. control valve is connected with auxiliary exhaust pipe one, also has the opening end of one group of exhaust aux. control valve to be connected with auxiliary exhaust pipe two.

9. according to the pressurization system of internal combustion engine of a kind of multiple turbosupercharger described in claim 1,2,3,4,5,7,8 any one, it is characterized in that: described pressure lifting device comprises air compressor, gas receiver, pressure controlled valve, air compressor outlet connects gas receiver, and the outlet of gas receiver connects corresponding intake duct through pressure controlled valve.

10. according to the pressurization system of internal combustion engine of a kind of multiple turbosupercharger described in claim 1,2,3,4,5,7,8 any one, it is characterized in that: described pressure lifting device comprises mechanical supercharger, the outlet of mechanical supercharger connects corresponding intake duct, and the import of mechanical supercharger connects the outlet of arbitrary gas compressor.