CN104632370A - Transient acceleration lifting system of supercharged engine - Google Patents
Transient acceleration lifting system of supercharged engine Download PDFInfo
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- CN104632370A CN104632370A CN201510074161.XA CN201510074161A CN104632370A CN 104632370 A CN104632370 A CN 104632370A CN 201510074161 A CN201510074161 A CN 201510074161A CN 104632370 A CN104632370 A CN 104632370A
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Abstract
The invention discloses a transient acceleration lifting system of a supercharged engine. The transient acceleration lifting system comprises an engine body, an air inlet header pipe, an air compressor and an air storage tank. The air compressor can be driven by a crankshaft of the engine body; the air storage tank is connected with the air compressor by an air inlet pipe of the air storage tank and is connected with the air inlet header pipe by an air outlet pipe of the air storage tank via a valve, and the supply time and the quantity of air which is supplied to the air inlet header pipe by the air storage tank can be controlled by the valve. The transient acceleration lifting system has the advantages that insufficient air in the air inlet header pipe at the moments of acceleration can be compensated by high-pressure air in the air storage tank, accordingly, sufficient air can flow into combustion systems to participate in combustion when the engine is accelerated, combustion can be optimized, power lifting can be accelerated, speed increase and overtaking of an integral vehicle can be flexibly and quickly carried out, black smoke can be prevented when the speeds of the vehicle are increased, and shortcomings that the quantity of oil is increased during sudden acceleration, but the quantity of inlet air is only slowly increased and the inlet air is transiently insufficient at the moments of acceleration due to response lag of superchargers in the prior art can be overcome.
Description
Technical field
The present invention relates to engine art, particularly a kind of transient state of supercharged engine accelerates elevator system.
Background technique
Existing supercharged engine is compared with non-supercharged engine, transient state acceleration performance is not as non-supercharged engine, when its main cause is supercharged engine acceleration, the lifting of turbo charger speed has a hesitation, cause not having enough air to enter cylinder combustion when accelerating, when that is refueling to motor, due to pressurized machine response lag, corresponding enough air are not had to participate in burning, cause engine power, moment of torsion not to promote at once, but could lifting slowly get on after delayed several seconds.Supercharged engine accelerates slow phenomenon and shows on car load to be exactly that driver one foot throttle steps down, the acceleration of car load is not obvious, needing waits a moment just can feel that car load has slowly accelerated up, this phenomenon is more obvious when low engine speed, due to the deficiency of air quantity, also easily there is the emission problems such as over-emitting black exhaust during acceleration, add the pollution of environment.
For improving the acceleration of supercharged engine, mechanical supercharger can be used when low speed to air inlet air pressurized, but mechanical supercharger volume and weight is large, cost is high, and it can consume larger mechanical work and improve the DeGrain accelerated during high speed, needing to install additional clutch makes mechanical supercharger when high speed and engine driving system is thrown off, and reduces mechanical friction loss.The clutch installed additional further increases the volume of engine driven supercharging system, weight and cost etc., and installs complicated, rate of fault and can promote to some extent, uses mechanical supercharger often to lose more than gain.
The state-of-the-art technology improving supercharged engine acceleration uses electric booster, it replaces turbine drives gas compressor with motor, when throttle steps down, control system controls electric booster motor and starts at once, and drive gas compressor to reach very high rotating speed instantaneously, thus the air quantity making acceleration enter cylinder instantaneously increases, engine power and moment of torsion can promote up at once.Electric booster needs high performance motor and optimised gas compressor, needs to carry out associated calibration to electric booster specially, and also need to increase the turnover air pipe through electric booster and relevant control valve, cost is higher.
The information being disclosed in this background technique part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
A kind of transient state of simple and reasonable supercharged engine is the object of the present invention is to provide to accelerate elevator system, the transient state of this supercharged engine accelerates the deficiency of the moment of air quantity in intake manifold when elevator system supplements acceleration by the high-pressure air in gas holder, there are enough air to enter combustion system when motor is accelerated and participate in burning, burning is more optimized, power-lift is faster, car load raises speed and overtakes other vehicles more flexibly fast, not over-emitting black exhaust during speed-raising, avoid oil mass when original technology is accelerated suddenly to get on but due to pressurized machine response lag, intake air amount increases slow, inlet air is not enough at acceleration instant transient, thus it is slow to cause car load to accelerate, accelerate the problems such as easy over-emitting black exhaust.
For achieving the above object, the transient state that the invention provides supercharged engine accelerates elevator system, comprising: engine body; Intake manifold; Air compressor, its bent axle by described engine body drives; And gas holder, it is connected with described air compressor by gas holder suction tude, and this gas holder passes through gas holder steam outlet pipe and is connected with described intake manifold through valve, and this valve is for controlling gas holder to the service life of intake manifold and air demand.
Preferably, in technique scheme, air compressor adopts piston type air compressor.
Preferably, in technique scheme, gas holder is metal sealing tank.
Preferably, in technique scheme, valve installation is on intake manifold.
Preferably, in technique scheme, valve is controlled by the valve control system be connected with the electronic control system of motor.
Preferably, in technique scheme, gas holder is also provided with safety relief valve.
Compared with prior art, the present invention has following beneficial effect: the transient state of this supercharged engine accelerates the deficiency of the moment of air quantity in intake manifold when elevator system supplements acceleration by the high-pressure air in gas holder, there are enough air to enter combustion system when motor is accelerated and participate in burning, burning is more optimized, power-lift is faster, car load raises speed and overtakes other vehicles more flexibly fast, not over-emitting black exhaust during speed-raising, avoid oil mass when original technology is accelerated suddenly to get on but due to pressurized machine response lag, intake air amount increases slow, inlet air is not enough at acceleration instant transient, thus it is slow to cause car load to accelerate, accelerate the problems such as easy over-emitting black exhaust.
Accompanying drawing explanation
Fig. 1 is the structural representation of the transient state acceleration elevator system of supercharged engine of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or constituent element, and do not get rid of other element or other constituent element.
As shown in Figure 1, specifically comprising of elevator system is accelerated according to the transient state of the supercharged engine of the specific embodiment of the invention: engine body 1, turbosupercharger 2, intake manifold 3, air compressor 4, valve 5, gas holder steam outlet pipe 6, gas holder suction tude 7 and gas holder 8.Wherein, one end of gas holder steam outlet pipe 6 is connected with gas holder 8, and the other end is connected with intake manifold 3 by valve 5, and the pressurized air of gas holder 8 is entered in intake manifold 3 by this gas holder steam outlet pipe.One end of gas holder suction tude 7 is connected with gas holder 8, and the other end is connected with air compressor 4, and the air that air compressor 4 compresses is entered in gas holder 8 by this gas holder suction tude and stores.When the engine runs, the work of band engine-driven air compressor, air compressor will be inflated to gas holder, when reservoir pressure reaches setting pressure, air compressor stops inflating, when driver steps on the throttle pedal, motor accelerates, when needing to supplement air to intake manifold, valve 5 will be opened, the high-pressure air of gas holder will flow in intake manifold, supplements the air quantity of intake manifold, engine power and kinetic force is promoted sooner get on and not over-emitting black exhaust.If reservoir pressure is less than intake manifold's pressure, then valve can not be opened, and avoids air to flow backwards from intake manifold and enters gas holder.
Wherein, air compressor 4 adopts piston type air compressor (air pump), its bent axle by engine body 1 drives, pump in gas holder for air pressure is contractd, when the pressure of gas holder is less than predetermined pressure, air compressor will continue to supplement pressurized air in gas holder, and after the pressure of gas holder reaches predetermined pressure, air compressor just stops supplementing pressurized air in gas holder.The truck of prior art and objective vehicular engine, all with air compressor for inflating to the gas holder on car, the air compressor of patent of the present invention can use on former motor with air compressor or can use carry out simple optimizing on former air compressor basis after, do not need to increase air compressor cost or cost increases seldom.
Gas holder 8 is metal sealing tank, for store compressed air, this gas holder 8 is connected with air compressor 4 by gas holder suction tude 7, the air that air compressor 4 compresses is entered in gas holder 8 by this suction tude and stores, after reservoir pressure reaches setting value, then inflation is automatically stopped to enter gas holder.This gas holder 8 is connected with intake manifold 3 through valve 5 by gas holder steam outlet pipe 6, and valve 5 is arranged on intake manifold 3, controls time and amount that gas holder air enters intake manifold.All connections are all to external sealed, and when valve 5 is opened, the pressurized air of gas holder 8 is entered in intake manifold 3 by this gas holder steam outlet pipe 6.When valve 5 is closed, engine aspirating system and gas holder are isolated.Air pressure in gas holder is generally greater than the air pressure in intake manifold, and volume of gas storage tank is greater than the volume of intake manifold.
Opening and closing of valve 5 is controlled by valve control system, this valve control system is connected with the electronic control system of motor, the signal such as throttle, rotating speed of motor can be received in real time, simultaneously it is also connected with the pressure of intake manifold, gas holder, temperature transducer, can receive pressure, the temperature signal of intake manifold and gas holder in real time.Valve control system can be demarcated in advance and set, and can start valve opening or closedown when coherent signal initial conditions meets.
Gas holder is also provided with safety relief valve, and when gas holder inner air pressure is greater than safety pressure, safety valve can open release high-pressure air automatically.
The truck of prior art and passenger vehicle, all with gas holder, for providing high-pressure air source to the pneumatic system on car, the gas holder of patent of the present invention can use the existing gas holder of former car or have after gas holder carries out simple optimizing can use former car, does not need the cost of increase gas holder or cost to increase seldom.
Under normal circumstances, gas holder 8 can store the air of certain pressure.When the engine runs, the work of band engine-driven air compressor, air compressor will be inflated to gas holder, and when reservoir pressure reaches setting pressure, air compressor stops inflating, and that is, during engine operation, reservoir pressure is remain constant substantially.Be communicated with between gas holder 8 with intake manifold 3, there is control valve 5 centre, when driver steps on the throttle pedal, motor accelerates, and when needing to supplement air to intake manifold, valve 5 will be opened, the high-pressure air of gas holder will flow in intake manifold, supplements the air quantity of intake manifold.The size that valve 5 is opened and the main impact by accelerator open degree, engine speed and intake manifold and the signal such as reservoir pressure, temperature such as the length of time.Under normal circumstances, when throttle is constant, control valve is closed, when open out, degree, engine speed conditions and gas holder that valve 5 can accelerate according to throttle and intake manifold's pressure, temperature, open immediately and certain time, discharge certain gas holder air and enter into intake manifold, supplement the air quantity because pressurized machine response lag lacks in short time, engine power and kinetic force are promoted sooner get on and not over-emitting black exhaust.If reservoir pressure is less than intake manifold's pressure, then valve can not be opened, and avoids air to flow backwards from intake manifold and enters gas holder.
Patent of the present invention is compared with original technology, and only need to increase control valve and gas holder turnover air pipe, cost increases seldom.Patent of the present invention is in motor and car load power matching and layout, substantially constant with original technology motor, arrangement convenience, does not need to modify to existing complete vehicle structure.The part that need increase due to patent of the present invention is less, and technology is simple and practical, and compared with engine driven supercharging technology and electric booster technology, reliability can be higher, more can adapt to severe running environment.The present invention improves on prior art basis, in acceleration situation, use the high-pressure air of gas holder to supplement the air quantity of intake manifold, cost increases little, coupling is installed simple, use rear car load speed-increasing effect good, not over-emitting black exhaust during speed-raising, and simple because part is few, higher than the prior art such as mechanical supercharger or electric booster reliability level.
To sum up, the transient state of this supercharged engine accelerates the deficiency of the moment of air quantity in intake manifold when elevator system supplements acceleration by the high-pressure air in gas holder, there are enough air to enter combustion system when motor is accelerated and participate in burning, burning is more optimized, power-lift is faster, car load raises speed and overtakes other vehicles more flexibly fast, not over-emitting black exhaust during speed-raising, avoid oil mass when original technology is accelerated suddenly to get on but due to pressurized machine response lag, intake air amount increases slow, inlet air is not enough at acceleration instant transient, thus it is slow to cause car load to accelerate, accelerate the problems such as easy over-emitting black exhaust.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (6)
1. the transient state of supercharged engine accelerates an elevator system, it is characterized in that, comprising:
Engine body;
Intake manifold;
Air compressor, its bent axle by described engine body drives; And
Gas holder, it is connected with described air compressor by gas holder suction tude, and this gas holder passes through gas holder steam outlet pipe and is connected with described intake manifold through valve, and this valve is for controlling gas holder to the service life of intake manifold and air demand.
2. the transient state of supercharged engine according to claim 1 accelerates elevator system, it is characterized in that, described air compressor adopts piston type air compressor.
3. the transient state of supercharged engine according to claim 1 accelerates elevator system, and it is characterized in that, described gas holder is metal sealing tank.
4. the transient state of supercharged engine according to claim 1 accelerates elevator system, and it is characterized in that, described valve installation is on intake manifold.
5. the transient state of supercharged engine according to claim 1 accelerates elevator system, and it is characterized in that, described valve is controlled by the valve control system be connected with the electronic control system of motor.
6. the transient state of supercharged engine according to claim 1 accelerates elevator system, and it is characterized in that, described gas holder is also provided with safety relief valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510074161.XA CN104632370A (en) | 2015-02-12 | 2015-02-12 | Transient acceleration lifting system of supercharged engine |
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| CN201510074161.XA CN104632370A (en) | 2015-02-12 | 2015-02-12 | Transient acceleration lifting system of supercharged engine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108266356A (en) * | 2017-12-21 | 2018-07-10 | 潍柴动力股份有限公司 | The control system and control method of air inlet off-load air compressor machine |
| CN109209694A (en) * | 2017-07-05 | 2019-01-15 | 罗伯特·博世有限公司 | Internal combustion engine and its air assist system |
| CN109870206A (en) * | 2019-02-15 | 2019-06-11 | 湖南大学 | The engine fuel consumption quantity test device and method used when a kind of research and development |
| CN112644343A (en) * | 2021-01-12 | 2021-04-13 | 广西玉柴机器股份有限公司 | Air compressor rotating speed correction method of fuel cell system |
| CN112697443A (en) * | 2020-12-08 | 2021-04-23 | 西华大学 | Experimental device and method for simulating transient change of exhaust flow under starting and accelerating conditions of engine |
| CN114251197A (en) * | 2021-11-23 | 2022-03-29 | 潍柴动力股份有限公司 | Air inlet system and air inlet control method of engine and engine with air inlet system and air inlet control method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209694A (en) * | 2017-07-05 | 2019-01-15 | 罗伯特·博世有限公司 | Internal combustion engine and its air assist system |
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| CN112697443A (en) * | 2020-12-08 | 2021-04-23 | 西华大学 | Experimental device and method for simulating transient change of exhaust flow under starting and accelerating conditions of engine |
| CN112697443B (en) * | 2020-12-08 | 2022-11-25 | 西华大学 | Experimental device and method for simulating transient change of exhaust flow under engine starting and accelerating conditions |
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| CN112644343B (en) * | 2021-01-12 | 2022-08-30 | 广西玉柴机器股份有限公司 | Air compressor rotating speed correction method of fuel cell system |
| CN114251197A (en) * | 2021-11-23 | 2022-03-29 | 潍柴动力股份有限公司 | Air inlet system and air inlet control method of engine and engine with air inlet system and air inlet control method |
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Application publication date: 20150520 |
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