CN104533598A - Switchable successive/secondary boosting structure and control method - Google Patents
Switchable successive/secondary boosting structure and control method Download PDFInfo
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Abstract
The invention aims to provide a switchable successive/secondary boosting structure and a control method; two boosting structures of successive boosting and secondary boosting are changed for fusing; the invention further provides a two-boosting mode-switchable control method; the organic combination of the successive boosting and the secondary boosting is realized; and the advantages and the disadvantages of the two boosting modes are complementary. The switchable successive/secondary boosting structure and the control method can be applied to boosting systems of two or more exhaust driven superchargers, and can realize three modes of single turbocharger, two-turbocharger parallel connection-successive boosting and two-turbocharger serial connection-secondary boosting. The switchable successive/secondary boosting structure and the control method can improve the problem of weak matching between the exhaust driven superchargers and all working conditions of internal combustion engines, enhance the power performances of the internal combustion engines, improve the efficiency, reduce the emission, and are specifically suitable for the internal combustion engines with wider working condition ranges.
Description
Technical field
What the present invention relates to is a kind of Structure of Internal-Combustion Engine, specifically boosting internal combustion engine structure.
Background technique
In order to make, power of IC engine density is large, efficiency is high, emission performance is good, generally adopts exhaust turbine pressuring technology now.Exhaust turbine pressuring technology, utilizes internal combustion engine waste gas energy to promote pressurized machine combustion motor air inlet compression, improves density of the induced air, and then increase air inflow, and improve scavenge effect.So just improve exhaust energy utilization ratio, improve power of IC engine density, improve air fuel ratio to a certain extent, reduce engine exhaust.
Along with the development of supercharging of internal combustion engine technology, create a variety of supercharging mode and pressurization system, such as two-stage supercharging, sequential pressurizing etc.Adopt the internal-combustion engine of exhaust gas turbocharge, due to internal combustion engine wider range, and pressurized machine range of flow and high efficient area narrower, usually can not realize pressurized machine and internal-combustion engine full working scope better mates.Two-stage supercharging and sequential pressurizing all can effectively improve this problem.
Sequential pressurizing basic principle is employing two turbosupercharger, with the increase of internal-combustion engine rotational speed and load, putting into parallel operation in order in succession, so just can ensure that the turbosupercharger that work is run in high efficient area all the time, to make the fuel consumption rate of internal-combustion engine all lower in whole service district, low-speed big is functional.
Two-stage supercharging basic principle is employing two turbosupercharger, with the increase of internal-combustion engine rotational speed and load, drop into series operation in order, improve pressure ratio, increase density of the induced air, the turbosupercharger that guarantee work operates in high efficient area, and to make the fuel consumption rate of internal-combustion engine all lower in whole service district, low-speed big is functional.
Because sequential pressurizing adopts two turbosupercharger parallel runnings, and two-stage supercharging adopts two turbosupercharger series operations, therefore consecutive pressurization system is applicable to the low operating conditions of range of flow high pressure ratio, and Two Stage Turbocharging System is applicable to the high operating conditions of the little pressure ratio of range of flow.For the internal-combustion engine that condition range is wider, when being in slow-speed of revolution high load, Two Stage Turbocharging System can better meet air inlet requirement; When being in high rotating speed low-load, consecutive pressurization system can better meet air inlet requirement.Traditional consecutive pressurization system and Two Stage Turbocharging System just adopt separately a kind of pressurization system to mate internal-combustion engine full working scope, though can realize better coupling, but for the wider internal-combustion engine of condition range, still not ideal enough.
Summary of the invention
The object of the present invention is to provide can solve exhaust-gas turbocharger mate with internal-combustion engine full working scope dissatisfactory problem in succession changeable/two-stage supercharging structure and controlling method.
The object of the present invention is achieved like this:
The present invention is in succession changeable/two-stage supercharging structure, comprise the first pressurized machine, second pressurized machine, internal combustion unit, the gas compressor of the first pressurized machine is communicated with internal combustion unit by A row intake manifold through A row intake manifold, the gas compressor of the first pressurized machine is communicated with air by the first compressor air inlet machine pipe, the turbine of the first pressurized machine is communicated with internal combustion unit by A row exhaust manifold through A row gas exhaust manifold, the turbine of the first pressurized machine is communicated with air by the first turbine exhaust pipe, the gas compressor of the second pressurized machine is communicated with internal combustion unit by B row intake manifold through B row intake manifold, the gas compressor of the second pressurized machine is communicated with air by the second compressor air inlet machine pipe, the turbine of the second pressurized machine is communicated with internal combustion unit by B row exhaust manifold through B row gas exhaust manifold, the turbine of the second pressurized machine is communicated with air by the second turbine exhaust pipe, it is characterized in that: by installing intake manifold's connecting tube thus being communicated with between A row intake manifold with B row intake manifold, first compressor air inlet machine pipe with between B row intake manifold by installing gas compressor connecting tube thus be communicated with, by installing turbine connecting tube thus being communicated with between first turbine exhaust pipe with B row exhaust manifold, by installing exhaust manifold connecting tube thus being communicated with between A row exhaust manifold with B row exhaust manifold, first compressor air inlet machine pipe is installed the first supercharger air compressor suction valve, first supercharger air compressor air inlet valve position is in suction tude and gas compressor connecting tube interface upstream, first turbine exhaust pipe is installed the first booster turbine outlet valve, first booster turbine outlet valve is in the first turbine exhaust pipe and turbine connecting tube interface downstream, upper installation first intercooler of A row intake manifold, upper installation second intercooler of B row intake manifold, gas compressor connecting tube above installs gas compressor connecting valve and the 3rd intercooler, turbine connecting tube upper installation turbine connecting valve, B row exhaust manifold between turbine connecting tube and exhaust manifold connecting tube installs gas valve, B row intake manifold between gas compressor connecting tube and intake manifold's connecting tube installs air valve, internal combustion unit is installed the speed probe and rack position sensor that gather its rotating speed and oil sprayer rack position respectively, speed probe and rack position sensor equal connection control first supercharger air compressor suction valve, gas compressor connecting valve, first booster turbine outlet valve, turbine connecting valve, air valve, the switch controller of gas valve opening and closing.
The present invention is in succession changeable/two-stage supercharging controlling method, it is characterized in that: adopt following supercharging device:
Comprise the first pressurized machine, second pressurized machine, internal combustion unit, the gas compressor of the first pressurized machine is communicated with internal combustion unit by A row intake manifold through A row intake manifold, the gas compressor of the first pressurized machine is communicated with air by the first compressor air inlet machine pipe, the turbine of the first pressurized machine is communicated with internal combustion unit by A row exhaust manifold through A row gas exhaust manifold, the turbine of the first pressurized machine is communicated with air by the first turbine exhaust pipe, the gas compressor of the second pressurized machine is communicated with internal combustion unit by B row intake manifold through B row intake manifold, the gas compressor of the second pressurized machine is communicated with air by the second compressor air inlet machine pipe, the turbine of the second pressurized machine is communicated with internal combustion unit by B row exhaust manifold through B row gas exhaust manifold, the turbine of the second pressurized machine is communicated with air by the second turbine exhaust pipe, by installing intake manifold's connecting tube thus being communicated with between A row intake manifold with B row intake manifold, first compressor air inlet machine pipe with between B row intake manifold by installing gas compressor connecting tube thus be communicated with, by installing turbine connecting tube thus being communicated with between first turbine exhaust pipe with B row exhaust manifold, by installing exhaust manifold connecting tube thus being communicated with between A row exhaust manifold with B row exhaust manifold, first compressor air inlet machine pipe is installed the first supercharger air compressor suction valve, first supercharger air compressor air inlet valve position is in suction tude and gas compressor connecting tube interface upstream, first turbine exhaust pipe is installed the first booster turbine outlet valve, first booster turbine outlet valve is in the first turbine exhaust pipe and turbine connecting tube interface downstream, upper installation first intercooler of A row intake manifold, upper installation second intercooler of B row intake manifold, gas compressor connecting tube above installs gas compressor connecting valve and the 3rd intercooler, turbine connecting tube upper installation turbine connecting valve, B row exhaust manifold between turbine connecting tube and exhaust manifold connecting tube installs gas valve, B row intake manifold between gas compressor connecting tube and intake manifold's connecting tube installs air valve, internal combustion unit is installed the speed probe and rack position sensor that gather its rotating speed and oil sprayer rack position respectively, speed probe and rack position sensor equal connection control first supercharger air compressor suction valve, gas compressor connecting valve, first booster turbine outlet valve, turbine connecting valve, air valve, the switch controller of gas valve opening and closing,
(1) MAP of pre-rendered internal combustion generating unit speed, oil sprayer rack position, best boost mode three, makes, after acquisition internal combustion generating unit speed, oil sprayer rack position, can obtain best boost mode by MAP;
(2) switch controller gathers speed probe, rack position sensor signal obtains current time internal combustion generating unit speed, oil sprayer rack position, draw best boost mode by looking into MAP;
(3) preset stabilization time, judge whether stabilization time exceedes setting value, if do not exceed, continue to use current best boost mode, if exceed, return step (2), upgrade best boost mode;
(4) judge whether two best boost mode of closing on change, if change, kind is switched to boost mode and identifies, if do not change, jump to step (2); Described boost mode switches kind and comprises kind 1-kind 6: wherein, kind 1 switches to two turbosupercharger series connection for single turbocharger, kind 2 for single turbocharger switch to that two turbosupercharger are in parallel, kind 3 is that two turbosupercharger series connection switch to that two turbosupercharger are in parallel, kind 4 is that two turbosupercharger series connection switch to single turbocharger, kind 5 is that two turbosupercharger parallel connections switch to that two turbosupercharger are connected, kind 6 is that two turbosupercharger parallel connections switch to single turbocharger;
(5) which kind judges that boost mode switches kind is: if kind 1, then open gas compressor connecting valve, turbine connecting valve simultaneously, and close the first booster turbine outlet valve, through delay time T simultaneously
1rear cut out first supercharger air compressor suction valve, jumps to step (2) afterwards; If kind 2, then open gas valve, delayed time τ
2after open air valve, jump to step (2) afterwards; If kind 3, then open the first supercharger air compressor suction valve, gas valve, the first booster turbine outlet valve simultaneously, and close gas compressor connecting valve, turbine connecting valve, through delay time T simultaneously
3after open air valve, jump to step (2) afterwards; If kind 4, then open the first booster turbine outlet valve, and close turbine connecting valve, through delay time T simultaneously
4after open the first supercharger air compressor suction valve, and close gas compressor connecting valve simultaneously, jump to step (2) afterwards; If kind 5, then open gas compressor connecting valve, turbine connecting valve simultaneously, and close the first supercharger air compressor suction valve, gas valve, the first booster turbine outlet valve, through delay time T simultaneously
5rear cut out air valve, jumps to step (2) afterwards; If kind 6, then closing gas valve, through delay time T
6rear cut out air valve, jumps to step (2) afterwards.
Advantage of the present invention is:
1, the MAP that rotating speed, oil sprayer rack position, boost mode three make is improved.The present invention can realize in succession, two-stage supercharging switches, and boost mode has three kinds (single turbocharger, two turbosupercharger series connection, two turbosupercharger parallel connections).Only have single turbocharger and two turbosupercharger, two kinds of boost mode in parallel for sequential pressurizing, two-stage supercharging only has single turbocharger and the series connection of two turbosupercharger, is all contained in three kinds of boost mode of the present invention.Therefore, in the present invention there are three regions and three handoff boundary in MAP, and sequential pressurizing and two-stage supercharging all only exist two regions and a handoff boundary.
2, the present invention has three handoff boundary, and the kind that therefore pattern switches has 6 kinds, and sequential pressurizing and two-stage supercharging all only have a handoff boundary, therefore all only has two kinds of patterns to switch, and all switches within kind comprises in the present invention.For sequential pressurizing, there is single turbocharger and switch to the in parallel and two turbosupercharger parallel connections of two turbosupercharger and switch to single turbocharger two kinds of switch modes, correspond respectively to the switching kind 2 in the present invention and kind 6.For two-stage supercharging, have single turbocharger switch to two turbosupercharger series connection and two turbosupercharger connect switch to single turbocharger two kinds of switch modes, correspond respectively to the switching kind 1 in the present invention and kind 4.The present invention also has two turbosupercharger series connection and switches to the in parallel and two turbosupercharger parallel connections of two turbosupercharger and switch to two turbosupercharger and to connect two kinds of switch modes, is respectively switching kind 3 and kind 5.
3, repeatedly switching near handoff boundary for avoiding, introducing stabilization time, every suboptimum boost mode starts timing after changing, and timing time exceedes and identifies whether best boost mode changes, and does not identify within stabilization time to it stabilization time again.
Accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram of the present invention;
Fig. 2 is classical sequential pressurizing structural representation;
Fig. 3 is classical two-stage supercharging structural representation;
Fig. 4 is the inventive method flow chart.
Embodiment
Below in conjunction with accompanying drawing citing, the present invention is described in more detail:
Composition graphs 1 ~ 4, sequential pressurizing and two-stage supercharging two kinds of pressure structures are merged by change by the present invention, and the controlling method of two kinds of supercharging forms switchings is proposed, achieve sequential pressurizing and two-stage supercharging combination, make two kinds of supercharging form pluses and minuses complementary.The present invention can be used for the pressurization system of two and above exhaust-gas turbocharger, for two exhaust-gas turbochargers, can realize single turbocharger, two turbosupercharger parallel connection-sequential pressurizings, two turbosupercharger series connection-two-stage supercharging Three models.
Apparatus of the present invention structure comprises basic supercharger air compressor suction valve 1, gas compressor connecting valve 2, basic supercharger air compressor 3, basic booster turbine 4, intake manifold's connecting tube 5, intercooler 6, exhaust manifold connecting tube 7, speed probe 8, A row intake manifold 9, intake manifold 10, internal combustion unit 11, gas exhaust manifold 12, A row exhaust manifold 13, B row exhaust manifold 14, B row intake manifold 15, rack position sensor 16, gas valve 17, air valve 18, switch controller 19, turbine connecting tube 20, gas compressor connecting tube 21, controlled boost device gas compressor 22, controlled boost device turbine exhaust pipe 23, controlled boost device compressor air inlet machine pipe 24, controlled boost device turbine 25, turbine connecting valve 26, basic booster turbine outlet valve 27, basic booster turbine outlet pipe 28, basic supercharger air compressor suction tude 29.
Position relationship by critical piece of the present invention is described shown in Fig. 1:
Basic supercharger air compressor suction tude 29 is communicated with gas compressor connecting tube 21 with air respectively, and gas compressor 3 outlet is communicated with A row intake manifold 9.The import of basic booster turbine 4 is communicated with A row exhaust manifold 13, and its outlet pipe 28 is communicated with turbine connecting tube 20 with air respectively.Controlled boost device compressor air inlet machine pipe 24 is communicated with air, and gas compressor 22 exports and is communicated with gas compressor connecting tube 21 with B row intake manifold 15 respectively.The import of controlled boost device turbine 25 is communicated with turbine connecting tube 20 with B row exhaust manifold 14 respectively, and its outlet pipe 23 is communicated with air.Basic supercharger air compressor suction valve 1 is arranged on compressor air inlet machine pipe 29, is in suction tude 29 and gas compressor connecting tube 21 interface upstream.Basic booster turbine outlet valve 27 is arranged on turbine exhaust pipe 28, is in turbine exhaust pipe 28 and turbine connecting tube 20 interface downstream.Gas compressor connecting tube 21, two ends were communicated with B row intake manifold 15 with basic supercharger air compressor suction tude 29 respectively.Turbine connecting tube 20, two ends were communicated with B row exhaust manifold 14 with basic booster turbine outlet pipe 28 respectively.Intake manifold's connecting tube 5, two ends were communicated with B row intake manifold 15 with A row intake manifold 9 respectively.Exhaust manifold connecting tube 7, two ends were communicated with B row exhaust manifold 14 with A row exhaust manifold 13 respectively.Gas valve 17 is arranged on the B row exhaust manifold 14 that is between turbine connecting tube 20 and exhaust manifold connecting tube 7.Air valve 18 is arranged on the B row intake manifold 15 that is between gas compressor connecting tube 21 and intake manifold's connecting tube 5.
Composition graphs 1,2,3 illustrates that sequential pressurizing, two-stage supercharging structurally organically combine and the design of switching both realizing by the present invention.The critical piece realizing sequential pressurizing comprises: basic pressurized machine, controlled boost device, gas valve and air valve; The critical piece realizing two-stage supercharging comprises: high pressure stage pressurized machine, low pressure stage pressurized machine, lower pressure stage turbine bypass valve and low pressure stage gas compressor bypass valve.The present invention adopts two pressurized machines: basic pressurized machine 3,4 and controlled boost device 22,25, serves as the basic pressurized machine in sequential pressurizing structure and controlled boost device respectively, also serves as the high pressure stage pressurized machine in two-stage supercharging structure and low pressure stage pressurized machine.Adopt air valve 18 and gas valve 17, serve as the air valve in sequential pressurizing structure and gas valve respectively, also serve as the high pressure stage gas compressor bypass valve in two-stage supercharging structure and high pressure stage turbine bypass valve.Adopt gas compressor connecting tube 21 and turbine connecting tube 20, be equivalent to the gas compressor connecting tube in Fig. 3 and turbine connecting tube.Adopt basic supercharger air compressor suction valve 1, basic booster turbine outlet valve 27, gas compressor connecting valve 2, turbine connecting valve 26, air valve 17 and gas valve 18, valve 1, valve 27 open and valve 2, valve 26 are closed time, be equivalent to two-stage supercharging structure in Fig. 3, valve 17 is equivalent to the high pressure stage turbine bypass valve in Fig. 3, and valve 18 is equivalent to the high pressure stage gas compressor bypass valve in Fig. 3; Valve 2, valve 26 open and valve 1, valve 27 are closed time, be equivalent to sequential pressurizing structure in Fig. 2, valve 17 is equivalent to the gas valve in Fig. 2, and valve 18 is equivalent to the air valve in Fig. 2.
The present invention realizes the controlling method switched:
Step 1: switch controller 19 gathers speed probe 8, rack position sensor 16 signal.The switching controls MAP be made up of rotating speed, oil sprayer rack position, best boost mode three, its medium speed, oil sprayer rack position are as the input signal of switching controls MAP.Switching controls MAP exist single turbocharger, two turbosupercharger series connection, two turbosupercharger, three kinds of boost mode in parallel, best boost mode when being in low discharge low-pressure ratio, high flow capacity low-pressure ratio, low discharge high pressure ratio three kinds of various inlet demands respectively as internal-combustion engine.With the rotating speed collected, rack position signal, draw best boost mode by looking into switching controls MAP.
Step 2: judge whether stabilization time exceedes setting value t, if exceed, adopts the best boost mode that step 1 obtains; If do not exceed, keep the best boost mode of a upper controlled circulation constant, jump to step 1.
Step 3: judge whether the best boost mode of current controlled circulation and a upper controlled circulation changes, if change, switches kind to best boost mode and identifies; If do not change, jump to step 1.
Step 4: judgment model switches kind, and performs switching controls.Pattern switches that kind is divided into that single turbine supercharging switches to two turbosupercharger series connection-kinds 1, single turbocharger switches to two turbosupercharger parallel connection-kind 2, two turbosupercharger series connection and switches to two turbosupercharger parallel connection-kind 3, two turbosupercharger and connect and switch to single turbocharger-kind 4, two turbosupercharger parallel connection and switch to two turbosupercharger series connection-kind 5, two turbosupercharger parallel connections and switch to single turbocharger-kind 6 six kinds.Whether judgment model switches is kind 1, if so, opens valve 2,26 simultaneously, and simultaneously throttle down 27, through delay time T
1rear throttle down 1, jumps to step 1; If not, determine whether kind 2.If so, valve 17 is opened, through delay time T
2after open valve 18, jump to step 1; If not, determine whether kind 3.If so, open valve 1,17,27 simultaneously, and simultaneously throttle down 2,26, through delay time T
3after open valve (18), jump to step 1; If not, determine whether kind 4.If so, valve 27 is opened, and simultaneously throttle down 26, through delay time T
4after open valve 1, and simultaneously throttle down 2, jump to step 1; If not, determine whether kind 5.If so, open valve 2,26 simultaneously, and throttle down 1,17,27, through delay time T
5rear throttle down 18, jumps to step 1; If not be kind 6, throttle down 17, through delay time T
6rear throttle down 18, jumps to step 1.
Concrete principle is as follows:
Consecutive pressurization system adopts two exhaust-gas turbochargers in succession to drop into successively according to the increase of internal-combustion engine rotational speed and moment of torsion, parallel running, and therefore this flow system flow scope is comparatively large, and pressure ratio is lower.Two Stage Turbocharging System adopts two exhaust-gas turbochargers in succession to drop into successively according to the increase of internal-combustion engine rotational speed and moment of torsion, series operation, and therefore this flow system flow scope is less, and pressure ratio is higher.For the internal-combustion engine that condition range is wider, when being in slow-speed of revolution middle-low load working condition, required air inflow and pressure ratio lower, adopt the single turbine boost mode of sequential pressurizing and two-stage supercharging all can meet air inlet requirement; When being in slow-speed of revolution high load operating mode, required air inflow is less and pressure ratio is higher, adopts sequential pressurizing better can not meet air inlet requirement, and adopts two-stage supercharging to meet the demands; When being in high rotating speed running on the lower load, required air inflow is more and pressure ratio is lower, adopts two-stage supercharging efficiency lower and easily blocks, and adopts sequential pressurizing to meet the demands and efficiency height does not block.From analyzing above, for the internal-combustion engine that condition range is wider, sequential pressurizing and two-stage supercharging is adopted respectively to have pluses and minuses, and can be complementary.Sequential pressurizing and two-stage supercharging are structurally similar, and just series-parallel system is different.Therefore, sequential pressurizing and two-stage supercharging are merged in a system, the change according to engine conditions switches sequential pressurizing and two-stage supercharging, can meet the air-intake of combustion engine demand that condition range is wider better.Basic supercharger air compressor suction valve 1, basic booster turbine outlet valve 27 are opened, and turbine connecting valve 26, gas compressor connecting valve 2, gas valve 17 and air valve 18 are closed, and can realize only dropping into basic pressurized machine 3,4 and run.Basic supercharger air compressor suction valve 1, basic booster turbine outlet valve 27, gas valve 17 and air valve 18 are opened, turbine connecting valve 26, gas compressor connecting valve 2 are closed, and can realize basic pressurized machine 3,4 and controlled boost device 25,22 parallel runnings-sequential pressurizing pattern.Turbine connecting valve 26, gas compressor connecting valve 2 are opened, basic supercharger air compressor suction valve 1, basic booster turbine outlet valve 27, gas valve 17 and air valve 18 are closed, basic pressurized machine 3,4 and controlled boost device 25,22 series operations-two-stage supercharging pattern can be realized, the aperture of adjustment gas valve 17 and air valve 18, can realize distribution and the pressure ratio of two-stage supercharging high low pressure inter-stage.So just can realize in succession/the function that switches of two-stage supercharging, merge the advantage of sequential pressurizing and two-stage supercharging, improve turbocharger efficiency, widen pressurization system and internal-combustion engine matching range, improve combustion engine powered performance, the discharges such as minimizing soot.
First find out rack position, best boost mode that rotating speed Two Variables is corresponding through emulation or test, make form and be stored into switch controller.Again handoff procedure is set stabilization time.Boost mode of the present invention can be divided into single turbocharger, two turbosupercharger series connection, three kinds in parallel of two turbosupercharger, pattern switch be divided into that single turbine supercharging switches to two turbosupercharger series connection-kinds 1, single turbocharger switches to two turbosupercharger parallel connection-kind 2, two turbosupercharger series connection and switches to two turbosupercharger parallel connection-kind 3, two turbosupercharger and connect and switch to single turbocharger-kind 4, two turbosupercharger parallel connection and switch to two turbosupercharger series connection-kind 5, two turbosupercharger parallel connections and switch to single turbocharger-kind 6 six kinds.To the state of the corresponding each valve switchs of six kinds of mode switching set, order and retard time.When internal-combustion engine 11 runs, the rotating speed of internal-combustion engine 11 and oil sprayer rack position are converted to electric signal transmission to switch controller 19 by speed probe 8 and rack position sensor 16 respectively.Switch controller 19 judges internal-combustion engine 11 operating point according to rotating speed size and rack position, draws best boost mode by tabling look-up.Best boost mode judges whether best boost mode changes after determining.If changed, judge that pressurized machine switches kind.Switch after kind determines, according to the state of each valve switch corresponding under this switching kind, retard time and order, switch controller 19 sends corresponding switching signal to the final controlling element of each valve, opens or closes each valve by final controlling element.When best boost mode is single turbocharger, switch controller 19 sends signal makes basic supercharger air compressor suction valve 1, basic booster turbine outlet valve 27 by given order and unlatching retard time, turbine connecting valve 26, gas compressor connecting valve 2, gas valve 17 and air valve 18 were closed by given order and retard time, and controlled boost device cuts out system stalls.When best boost mode is two pressurized machine parallel running, switch controller 19 sends signal makes basic supercharger air compressor suction valve 1, basic booster turbine outlet valve 27, gas valve 17 and air valve 18 by given order and unlatching retard time, turbine connecting valve 26, gas compressor connecting valve 2 are closed, basic pressurized machine 3,4 and controlled boost device 22,25 parallel running by given order and retard time.When best boost mode is two pressurized machine series operation, switch controller 19 sends signal makes turbine connecting valve 20, gas compressor connecting valve 2 open by given order and retard time, make basic supercharger air compressor suction valve 1, basic booster turbine outlet valve 27, gas valve 17 and air valve 18 by given order and closedown retard time, basic pressurized machine 3,4 and controlled boost device 22,25 series operation.
Switch the controlling method of in succession/two-stage supercharging:
Step 1: switch controller 19 gathers speed probe 8, rack position sensor 16 signal.The switching controls MAP be made up of rotating speed, oil sprayer rack position, best boost mode three, its medium speed, oil sprayer rack position are as the input signal of switching controls MAP.Switching controls MAP exist single turbocharger, two turbosupercharger series connection, two turbosupercharger, three kinds of boost mode in parallel, best boost mode when being in low discharge low-pressure ratio, high flow capacity low-pressure ratio, low discharge high pressure ratio three kinds of various inlet demands respectively as internal-combustion engine.With the rotating speed collected, rack position signal, draw best boost mode by looking into switching controls MAP.
Step 2: judge whether stabilization time exceedes setting value, if exceed, adopts the best boost mode that step 1 obtains; If do not exceed, keep the best boost mode of a upper controlled circulation constant, jump to step 1.
Step 3: judge whether the best boost mode of current controlled circulation and a upper controlled circulation changes, if change, switches kind to best boost mode and identifies; If do not change, jump to step 1.
Step 4: judgment model switches kind, and performs switching controls.Pattern switches that kind is divided into that single turbine supercharging switches to two turbosupercharger series connection-kinds 1, single turbocharger switches to two turbosupercharger parallel connection-kind 2, two turbosupercharger series connection and switches to two turbosupercharger parallel connection-kind 3, two turbosupercharger and connect and switch to single turbocharger-kind 4, two turbosupercharger parallel connection and switch to two turbosupercharger series connection-kind 5, two turbosupercharger parallel connections and switch to single turbocharger-kind 6 six kinds.Whether judgment model switches is kind 1, if so, opens valve 2,26 simultaneously, and simultaneously throttle down 27, through delay time T
1rear throttle down 1, jumps to step 1; If not, determine whether kind 2.If so, valve 17 is opened, through delay time T
2after open valve 18, jump to step 1; If not, determine whether kind 3.If so, open valve 1,17,27 simultaneously, and simultaneously throttle down 2,26, through delay time T
3after open valve (18), jump to step 1; If not, determine whether kind 4.If so, valve 27 is opened, and simultaneously throttle down 26, through delay time T
4after open valve 1, and simultaneously throttle down 2, jump to step 1; If not, determine whether kind 5.If so, open valve 2,26 simultaneously, and throttle down 1,17,27, through delay time T
5rear throttle down 18, jumps to step 1; If not be kind 6, throttle down 17, through delay time T
6rear throttle down 18, jumps to step 1.
Claims (2)
1. in succession changeable/two-stage supercharging structure, comprise the first pressurized machine, second pressurized machine, internal combustion unit, the gas compressor of the first pressurized machine is communicated with internal combustion unit by A row intake manifold through A row intake manifold, the gas compressor of the first pressurized machine is communicated with air by the first compressor air inlet machine pipe, the turbine of the first pressurized machine is communicated with internal combustion unit by A row exhaust manifold through A row gas exhaust manifold, the turbine of the first pressurized machine is communicated with air by the first turbine exhaust pipe, the gas compressor of the second pressurized machine is communicated with internal combustion unit by B row intake manifold through B row intake manifold, the gas compressor of the second pressurized machine is communicated with air by the second compressor air inlet machine pipe, the turbine of the second pressurized machine is communicated with internal combustion unit by B row exhaust manifold through B row gas exhaust manifold, the turbine of the second pressurized machine is communicated with air by the second turbine exhaust pipe, it is characterized in that: by installing intake manifold's connecting tube thus being communicated with between A row intake manifold with B row intake manifold, first compressor air inlet machine pipe with between B row intake manifold by installing gas compressor connecting tube thus be communicated with, by installing turbine connecting tube thus being communicated with between first turbine exhaust pipe with B row exhaust manifold, by installing exhaust manifold connecting tube thus being communicated with between A row exhaust manifold with B row exhaust manifold, first compressor air inlet machine pipe is installed the first supercharger air compressor suction valve, first supercharger air compressor air inlet valve position is in suction tude and gas compressor connecting tube interface upstream, first turbine exhaust pipe is installed the first booster turbine outlet valve, first booster turbine outlet valve is in the first turbine exhaust pipe and turbine connecting tube interface downstream, upper installation first intercooler of A row intake manifold, upper installation second intercooler of B row intake manifold, gas compressor connecting tube above installs gas compressor connecting valve and the 3rd intercooler, turbine connecting tube upper installation turbine connecting valve, B row exhaust manifold between turbine connecting tube and exhaust manifold connecting tube installs gas valve, B row intake manifold between gas compressor connecting tube and intake manifold's connecting tube installs air valve, internal combustion unit is installed the speed probe and rack position sensor that gather its rotating speed and oil sprayer rack position respectively, speed probe and rack position sensor equal connection control first supercharger air compressor suction valve, gas compressor connecting valve, first booster turbine outlet valve, turbine connecting valve, air valve, the switch controller of gas valve opening and closing.
2. in succession changeable/two-stage supercharging controlling method, is characterized in that: adopt following supercharging device:
Comprise the first pressurized machine, second pressurized machine, internal combustion unit, the gas compressor of the first pressurized machine is communicated with internal combustion unit by A row intake manifold through A row intake manifold, the gas compressor of the first pressurized machine is communicated with air by the first compressor air inlet machine pipe, the turbine of the first pressurized machine is communicated with internal combustion unit by A row exhaust manifold through A row gas exhaust manifold, the turbine of the first pressurized machine is communicated with air by the first turbine exhaust pipe, the gas compressor of the second pressurized machine is communicated with internal combustion unit by B row intake manifold through B row intake manifold, the gas compressor of the second pressurized machine is communicated with air by the second compressor air inlet machine pipe, the turbine of the second pressurized machine is communicated with internal combustion unit by B row exhaust manifold through B row gas exhaust manifold, the turbine of the second pressurized machine is communicated with air by the second turbine exhaust pipe, by installing intake manifold's connecting tube thus being communicated with between A row intake manifold with B row intake manifold, first compressor air inlet machine pipe with between B row intake manifold by installing gas compressor connecting tube thus be communicated with, by installing turbine connecting tube thus being communicated with between first turbine exhaust pipe with B row exhaust manifold, by installing exhaust manifold connecting tube thus being communicated with between A row exhaust manifold with B row exhaust manifold, first compressor air inlet machine pipe is installed the first supercharger air compressor suction valve, first supercharger air compressor air inlet valve position is in suction tude and gas compressor connecting tube interface upstream, first turbine exhaust pipe is installed the first booster turbine outlet valve, first booster turbine outlet valve is in the first turbine exhaust pipe and turbine connecting tube interface downstream, upper installation first intercooler of A row intake manifold, upper installation second intercooler of B row intake manifold, gas compressor connecting tube above installs gas compressor connecting valve and the 3rd intercooler, turbine connecting tube upper installation turbine connecting valve, B row exhaust manifold between turbine connecting tube and exhaust manifold connecting tube installs gas valve, B row intake manifold between gas compressor connecting tube and intake manifold's connecting tube installs air valve, internal combustion unit is installed the speed probe and rack position sensor that gather its rotating speed and oil sprayer rack position respectively, speed probe and rack position sensor equal connection control first supercharger air compressor suction valve, gas compressor connecting valve, first booster turbine outlet valve, turbine connecting valve, air valve, the switch controller of gas valve opening and closing,
(1) MAP of pre-rendered internal combustion generating unit speed, oil sprayer rack position, best boost mode three, makes, after acquisition internal combustion generating unit speed, oil sprayer rack position, can obtain best boost mode by MAP;
(2) switch controller gathers speed probe, rack position sensor signal obtains current time internal combustion generating unit speed, oil sprayer rack position, draw best boost mode by looking into MAP;
(3) preset stabilization time, judge whether stabilization time exceedes setting value, if do not exceed, continue to use current best boost mode, if exceed, return step (2), upgrade best boost mode;
(4) judge whether two best boost mode of closing on change, if change, kind is switched to boost mode and identifies, if do not change, jump to step (2); Described boost mode switches kind and comprises kind 1-kind 6: wherein, kind 1 switches to two turbosupercharger series connection for single turbocharger, kind 2 for single turbocharger switch to that two turbosupercharger are in parallel, kind 3 is that two turbosupercharger series connection switch to that two turbosupercharger are in parallel, kind 4 is that two turbosupercharger series connection switch to single turbocharger, kind 5 is that two turbosupercharger parallel connections switch to that two turbosupercharger are connected, kind 6 is that two turbosupercharger parallel connections switch to single turbocharger;
(5) which kind judges that boost mode switches kind is: if kind 1, then open gas compressor connecting valve, turbine connecting valve simultaneously, and close the first booster turbine outlet valve, through delay time T simultaneously
1rear cut out first supercharger air compressor suction valve, jumps to step (2) afterwards; If kind 2, then open gas valve, delayed time τ
2after open air valve, jump to step (2) afterwards; If kind 3, then open the first supercharger air compressor suction valve, gas valve, the first booster turbine outlet valve simultaneously, and close gas compressor connecting valve, turbine connecting valve, through delay time T simultaneously
3after open air valve, jump to step (2) afterwards; If kind 4, then open the first booster turbine outlet valve, and close turbine connecting valve, through delay time T simultaneously
4after open the first supercharger air compressor suction valve, and close gas compressor connecting valve simultaneously, jump to step (2) afterwards; If kind 5, then open gas compressor connecting valve, turbine connecting valve simultaneously, and close the first supercharger air compressor suction valve, gas valve, the first booster turbine outlet valve, through delay time T simultaneously
5rear cut out air valve, jumps to step (2) afterwards; If kind 6, then closing gas valve, through delay time T
6rear cut out air valve, jumps to step (2) afterwards.
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