阅读说明：本技术 发动机停机控制系统、控制方法及车辆 (Engine shutdown control system, control method and vehicle ) 是由 赵志国 辛志鹏 曹宾 于 2019-08-16 设计创作，主要内容包括：一种发动机停机控制系统、控制方法及车辆,该发动机停机控制系统包括熄火条件信息采集单元、控制单元及排气控制阀,所述熄火条件采集单元及所述排气控制阀与所述控制单元电性相连；所述熄火条件采集单元采集判断发动机熄火所需的信心,并将该信息传递至所述控制单元；所述控制单元依据接收到的信息判断发动机是否熄火,当所述发动机熄火时向所述排气控制阀发送闭合信号；所述排气控制阀设置于与发动机相连的排气尾管内,当所述排气控制阀接收到所述处理单元发送的闭合信号时,所述排气控制阀闭合,阻止发送机废气排出。该发动机停机控制系统能够较为快速地使发动机停机,适用范围较广,成本更低。(A kind of engine shutdown control system, control method and vehicle; the engine shutdown control system includes burn-out condition information acquisition unit, control unit and gas exhausting valve, and the burn-out condition acquisition unit and the gas exhausting valve are electrical connected with described control unit；Confidence needed for the burn-out condition acquisition unit acquisition judges engine misses, and the information is transferred to described control unit；Described control unit judges whether engine stops working according to the information received, sends closure signal to the gas exhausting valve when the engine misses；The gas exhausting valve is set in the tailpipe being connected with engine, and when the gas exhausting valve receives the closure signal that the processing unit is sent, the gas exhausting valve closure prevents transmitter exhaust gas from being discharged.The engine shutdown control system relatively rapid can be such that engine shuts down, and the scope of application is wider, and cost is lower.)

1. a kind of engine shutdown control system, it is characterised in that: including burn-out condition information acquisition unit, control unit and row Gas control valve, the burn-out condition acquisition unit and the gas exhausting valve are electrical connected with described control unit；

Confidence needed for the burn-out condition acquisition unit acquisition judges engine misses, and the information is transferred to the control Unit；

Described control unit judges whether engine stops working according to the information received, when the engine misses to the row Gas control valve sends closure signal；

The gas exhausting valve is set in the tailpipe being connected with engine, when the gas exhausting valve receives the control When the closure signal that unit processed is sent, the gas exhausting valve closure prevents transmitter exhaust gas from being discharged.

2. engine shutdown control system according to claim 1, it is characterised in that: be additionally provided on the tailpipe Three-way catalyst and silencer, the gas exhausting valve are set between the three-way catalyst and the silencer.

3. engine shutdown control system according to claim 1, it is characterised in that: when the gas exhausting valve is closed When, the gas exhausting valve moves to full-shut position from full-gear, until engine is completely flame-out.

4. engine shutdown control system according to claim 3, it is characterised in that: completely flame-out in the engine Afterwards, by the second delay time, gas exhausting valve described in secondary control from full-shut position moves to half-open shape to the processing unit again State.

5. engine shutdown control system according to claim 4, it is characterised in that: the engine shutdown control system It further include the fault cues unit being electrical connected with described control unit and failsafe valve detection unit, the failsafe valve detection Unit detects the fault message of the gas exhausting valve, when the gas exhausting valve can not move to half-open shape from full-shut position When state, described control unit controls the fault cues unit and issues prompt.

6. a kind of engine halt control method, it is characterised in that: this method comprises the following steps:

Judge whether engine meets burn-out condition；

If engine meets burn-out condition, gas exhausting valve is closed, engine exhaust is prevented to be discharged.

7. engine halt control method according to claim 6, it is characterised in that: the burn-out condition of engine includes hair Motivation revolving speed is triggered lower than rotary speed threshold value or engine halt switch.

8. engine halt control method according to claim 6, it is characterised in that: when engine meets burn-out condition When, by the first delay time, the gas exhausting valve is made to move to full-shut position；After engine is completely flame-out, by the Two delay times make the gas exhausting valve move to half-open position from full-shut position.

9. engine halt control method according to claim 8, it is characterised in that: whether detect the gas exhausting valve The athletic performance that can be completed from full-shut position to half-open position sends fault cues if being unable to complete the movement.

10. a kind of vehicle, it is characterised in that: the vehicle includes that engine described in any one of claim 1 to 5 is shut down Control system.

Technical field

The present invention relates to automotive power field, especially a kind of engine shutdown control system, control method and vehicle .

Background technique

With the progress of vehicle technology level, user requires also increasingly harshness to the subjective feeling that vehicle is driven, the most " vibration " being directly perceived by the user stands in the breach.Present engine mainly uses oil-break in flame-out process and closes air inlet section The mode of valve carries out stop to engine, but due to the effect of inertia of air-flow, still has a small amount of fresh air and enter cylinder, and Oil-break can not rapidly and thoroughly prevent the burning of remaining oil gas again, this will lead to it is flame-out during engine speed can not be linear Decline and be quickly zeroed, and since the independently operated inhomogeneities of each cylinder exists, has directly caused the jump of speed of crankshaft, three Performance on cylinder machine becomes apparent.It is this due to the nonlinear change and revolving speed zero process of speed of crankshaft degree during flame-out The bounce of engine body caused by extending will be transmitted on vehicle frame by engine mounting, pass through vehicle frame, vehicle body, seat and direction The transmission paths such as disk are perceived by driver.

Summary of the invention

The present invention provides a kind of engine shutdown control system, control method and vehicle, which shuts down control system System relatively rapid can be such that engine shuts down, and the scope of application is wider, and cost is lower.

The present invention provides a kind of engine shutdown control system, including burn-out condition information acquisition unit, control unit and Gas exhausting valve, the burn-out condition acquisition unit and the gas exhausting valve are electrical connected with described control unit；

Confidence needed for the burn-out condition acquisition unit acquisition judge engine misses, and described in the information is transferred to Control unit；

Described control unit judges whether engine stops working according to the information received, when the engine misses to institute It states gas exhausting valve and sends closure signal；

The gas exhausting valve is set in the tailpipe being connected with engine, when the gas exhausting valve receives institute When stating the closure signal of processing unit transmission, the gas exhausting valve closure prevents transmitter exhaust gas from being discharged.

Further, three-way catalyst and silencer, the gas exhausting valve setting are additionally provided on the tailpipe Between the three-way catalyst and the silencer.

Further, when the gas exhausting valve is closed, the gas exhausting valve moves to fully closed shape from full-gear State, until engine is completely flame-out.

Further, after the engine is completely flame-out, by the second delay time, processing unit secondary control again The gas exhausting valve moves to half-open position from full-shut position.

Further, the engine shutdown control system further includes the fault cues being electrical connected with described control unit Unit and failsafe valve detection unit, the failsafe valve detection unit detect the fault message of the gas exhausting valve, work as institute When half-open position can not be moved to from full-shut position by stating gas exhausting valve, described control unit controls the fault cues unit Issue prompt.

The present invention also provides a kind of engine halt control methods, and this method comprises the following steps:

Judge whether engine meets burn-out condition；

If engine meets burn-out condition, gas exhausting valve is closed, engine exhaust is prevented to be discharged.

Further, the burn-out condition of engine includes engine speed lower than rotary speed threshold value or engine halt switch quilt Triggering.

Further, when engine meets burn-out condition, by the first delay time, move the gas exhausting valve To full-shut position；After engine is completely flame-out, by the second delay time, move the gas exhausting valve from full-shut position To half-open position.

Further, detect whether the gas exhausting valve can complete athletic performance from full-shut position to half-open position, If being unable to complete the movement, fault cues are sent.

The present invention also provides a kind of vehicle, which includes above-mentioned engine shutdown control system.

In conclusion in the present invention, by the way that exhaust valve is arranged in tailpipe, and will exhaust when engine is shut down Valve closure, in this way, the exhaust gas in engine cylinder body can not be discharged out of tailpipe, engine cylinder in engine stop moment Intracorporal exhaust back pressure can increase moment, this reduces the inlet of fresh air in cylinder body in engine stop moment, deteriorates The intracorporal burning situation of cylinder, makes engine speed rapid decrease, then realizes the process for shortening engine down time.The system Directly by preventing ejecting for engine cylinder body inner exhaust gas from deteriorating the intracorporal burning situation of cylinder, reduction engine acting is real The quick shutdown of existing engine, this can relatively rapid complete the process of engine shutdown；At the same time, which is starting Machine no longer needs the cooperation of motor when shutting down, the scope of application is handed over extensively, and cost is relatively low.

The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention, And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.

Detailed description of the invention

Fig. 1 show the system block diagram of engine shutdown control system provided in an embodiment of the present invention.

Fig. 2 show in Fig. 1 the structural schematic diagram at the exhaust pipe of engine.

Fig. 3 show the flow chart of engine halt control method provided in an embodiment of the present invention.

Specific embodiment

It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with Attached drawing and preferred embodiment, it is as follows that the present invention is described in detail.

The present invention provides a kind of engine shutdown control system, control method and vehicle, which shuts down control system System relatively rapid can be such that engine shuts down, and the scope of application is wider, and cost is lower.

Fig. 1 show the system block diagram of engine shutdown control system provided in an embodiment of the present invention, and Fig. 2 show Fig. 1 Structural schematic diagram at the middle exhaust pipe of engine.As shown in Figures 1 and 2, engine shutdown control system provided in this embodiment Including burn-out condition information acquisition unit 10, exhaust valve 20 and control unit 30, the acquisition of burn-out condition information acquisition unit 10 is sentenced Information needed for disconnected engine misses, and the information is transferred to control unit 30, control unit 30 passes through information judgement hair Whether motivation stops working, and when engine misses, control unit 30 controls exhaust valve 20 and is closed, and exhaust valve 20 is set to and engine In connected tailpipe 40, exhaust valve 20 prevents the discharge of engine exhaust in closed state.

In the present embodiment, by the way that exhaust valve 20 is arranged in tailpipe 40, and when engine is shut down by exhaust valve 20 closures, in this way, the exhaust gas in engine cylinder body can not be discharged out of tailpipe 40, engine in engine stop moment The intracorporal exhaust back pressure of cylinder can increase moment, this reduces the inlet of fresh air in cylinder body in engine stop moment, dislikes Change the intracorporal burning situation of cylinder, make engine speed rapid decrease, then realizes the process for shortening engine down time.This is System directly deteriorates the intracorporal burning situation of cylinder by ejecting for prevention engine cylinder body inner exhaust gas, reduces engine acting, Realize the quick shutdown of engine, this can relatively rapid complete the process of engine shutdown；At the same time, which is sending out Motivation no longer needs the cooperation of motor when shutting down, the scope of application is handed over extensively, and cost is relatively low.

Further, in the present embodiment, ternary catalyzing unit 41 and silencer 42 are additionally provided on tailpipe 40, it is above-mentioned Exhaust valve 20 be set between ternary catalyzing unit 41 and silencer 42, that is, engine body 43, ternary catalyzing unit 41, row Air valve 20 and silencer 42 are set gradually from left to right on Fig. 2.

By the way that exhaust valve 20 to be set between ternary catalyzing unit 41 and silencer 42, and it is located at as far as possible close to silencer 42 Place.In exhaust gas transmittance process, exhaust gas on the one hand can be made to first pass through the processing of ternary catalyzing unit 41, then reach exhaust valve 20, the damage of pollutant and corrosive gas to exhaust valve 20 in exhaust gas is prevented, on the other hand, silencer 42 can also be to exhaust gas It is eliminated in the noise by being generated when exhaust valve 20, reduces exhaust noise.Preferably, in 20 setting area of exhaust valve, row Gas tail pipe 40 is straight tube, to prevent the residual of water vapour.

Further, in the present embodiment, the engine misses condition of the acquisition of burn-out condition information acquisition unit 10 includes But whether the revolving speed for being not limited to engine is triggered lower than the rotary speed threshold value and engine halt switch of setting.

When processing unit judgement meets engine misses condition, after the first delay time, control exhaust valve 20 is closed. Specifically, when controlling exhaust valve 20 and being closed, processing unit controls exhaust valve 20 from full-gear (such as after the first delay time A point in Fig. 2) full-shut position (the B point in such as Fig. 2) is moved to, until engine is completely flame-out；It is completely flame-out in engine Afterwards, by the second delay time, processing unit controls exhaust valve 20 again and moves to half-open position (in such as Fig. 2 from full-shut position C point), above-mentioned half-open position refer to exhaust valve 20 be in standard-sized sheet and it is fully closed between state, specific aperture can basis Actual conditions are controlled.After exhaust valve 20 moves to half-open position, by third delay time, processing unit control exhaust Valve 20 moves to full-gear from half-open position from newly, and engine stopping process terminates.

In above process, the setting of the first delay time is to meet engine misses condition in processing unit judgement Afterwards, vehicle is prevented to be again started up vehicle suddenly under certain special states, such as state of rolling backward, slow dead ship condition.In engine After stopping working completely, by the way that exhaust valve 20 is moved to half-open position from full-shut position, it on the one hand can be discharged in engine and save bit by bit Exhaust gas, on the other hand the movement of exhaust valve 20 can also be detected.

Further, engine shutdown control system further includes the fault cues unit 50 being electrical connected with control unit 30 And failsafe valve detection unit 60, failsafe valve detection unit 60 detects the fault message of exhaust valve 20, when exhaust valve 20 cannot When enough moving to half-open position from full-shut position, control unit 30 controls fault cues unit 50 and issues prompt, such as lights failure Lamp etc. prevents from causing startup separator when next engine start to prompt 20 failure of exhaust valve to driver, reduces to engine Damage.

Fig. 3 show the flow chart of engine halt control method provided in an embodiment of the present invention, as shown in figure 3, this hair Bright to additionally provide a kind of engine halt control method, this method comprises the following steps:

Judge whether engine meets burn-out condition；

If engine meets burn-out condition, exhaust valve 20 is closed, engine exhaust is prevented to be discharged.

If engine does not meet burn-out condition, the aperture of exhaust valve 20 is not changed.

In the above-mentioned methods, the burn-out condition of engine includes but is not limited to engine speed lower than rotary speed threshold value, such as 200 Turn or engine halt switch is triggered.

Further, in the present embodiment, it when engine meets burn-out condition, after the first delay time, closes Exhaust valve 20 causes engine damage to prevent engine from starting suddenly within the time.

Further, during starting to execute the movement of the closing of exhaust valve 20, judge whether engine has again Starting demand stops the closing motion for executing exhaust valve 20 if engine has starting demand, and exhaust valve 20 reopens； If engine does not start demand, the closed state of exhaust valve 20 is kept, until engine is completely flame-out.In the present embodiment In, the above-mentioned closure of control exhaust valve 20 can be down to making exhaust valve 20 move to full-shut position from full-gear.

Further, after engine is completely flame-out, by the second delay time, exhaust valve 20 is controlled again from fully closed shape State moves to half-open position, above-mentioned half-open position refer to exhaust valve 20 be in standard-sized sheet and it is fully closed between state, specifically open Degree can be controlled according to the actual situation.

Whether detection exhaust valve 20 can complete the athletic performance from full-shut position to half-open position, if it is dynamic to be unable to complete this Make, then sends fault cues；If completing the movement, engine, which shuts down control process, to be terminated, and control exhaust valve 20 is from half-open State returns back to full-gear again.

In conclusion in the present invention, by the way that exhaust valve 20 is arranged in tailpipe 40, and will when engine is shut down Exhaust valve 20 is closed, in this way, the exhaust gas in engine cylinder body can not be discharged out of tailpipe 40 in engine stop moment, Exhaust back pressure in engine cylinder body can increase moment, this reduces the entrance of fresh air in cylinder body in engine stop moment Amount deteriorates the intracorporal burning situation of cylinder, makes engine speed rapid decrease, then realizes the mistake for shortening engine down time Journey.The system, which directly passes through, prevents ejecting for engine cylinder body inner exhaust gas from deteriorating the intracorporal burning situation of cylinder, and reduction is started Machine acting, realizes the quick shutdown of engine, this can relatively rapid complete the process of engine shutdown；At the same time, should System no longer needs the cooperation of motor when engine is shut down, and the scope of application is handed over extensively, and cost is relatively low.

The present invention also provides a kind of vehicles, including above-mentioned transmitter shutdown control system, about the other of the vehicle Technical characteristic refers to the prior art, and details are not described herein.

The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, though So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any technology people for being familiar with this profession Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification It is right according to the technical essence of the invention for the equivalent embodiment of equivalent variations, but without departing from the technical solutions of the present invention Any simple modification, equivalent change and modification made by above embodiments, all of which are still within the scope of the technical scheme of the invention.