CN102490719A - System for quickly starting and stopping engine of hybrid vehicle and control method for system - Google Patents
System for quickly starting and stopping engine of hybrid vehicle and control method for system Download PDFInfo
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- CN102490719A CN102490719A CN2011103984155A CN201110398415A CN102490719A CN 102490719 A CN102490719 A CN 102490719A CN 2011103984155 A CN2011103984155 A CN 2011103984155A CN 201110398415 A CN201110398415 A CN 201110398415A CN 102490719 A CN102490719 A CN 102490719A
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Abstract
The invention relates to a system for quickly starting and stopping an engine of a hybrid vehicle and a control method for the system. The system comprises a whole vehicle controller, and the engine and an engine controller, a generator and a generator controller, an energy storage device and an energy storage device controller, and a driving motor and a motor controller which are respectively connected with the whole vehicle controller in a control manner, wherein the engine controller comprises an engine stopping judgment logic module, an engine stopping logic module, an engine starting judgment logic module and an engine starting logic module. By adoption of the system, the engine can work efficiently; the fuel oil consumption of the engine is reduced; and the atmosphere pollution is reduced.
Description
Technical field
The invention belongs to hybrid vehicle control technology field, relate to a kind of hybrid electric vehicle engine rapid starting/stopping system and control method thereof.
Background technology
Global oil crises and environmental pollution are added the current financial crisis that grows in intensity makes energy-conservation and environmental protection become the two principal themes of automobile industry development.Automobile pollution is near today of 1,000,000,000 in the world, and developing more energy-conservation automobile is trend of the times.Because the world car recoverable amount of this flood tide; Constantly increase in urban population, under the automobile quantity situation that when the river rises the boat goes up; Motor vehicle exhaust emission makes urban air-quality constantly descend; Become No.1 " killer " of air quality, the automobile of therefore developing more environmental protection also is the task of top priority of auto-domain.New-energy automobile is obtaining development rapidly in nearly decades, and wherein hybrid vehicle has realized successfully that Quantity production and technology reach its maturity, and how to reduce hybrid vehicle oil consumption and discharging become the technological main objective of hybrid vehicle.
Existing hybrid electric vehicle engine idling start and stop control system mainly is when the speed of a motor vehicle is zero, to make engine shutdown; At brake snub with deceleration is slided and the low cruise stage driving engine of starting to walk all needs to start; And in non-efficient district work, the fuel consumption rate of this moment is high, and pollutant emission is serious.And along with the development of pure electric actuation techniques, can realize driving engine at brake snub, slow down and slide and the starting stage engine shutdown, further reduce engine fuel consumption and pollutant emission.
Summary of the invention
The purpose of this invention is to provide a kind of hybrid electric vehicle engine rapid starting/stopping system and control method thereof,, reduce fuel oil consumption and pollutant discharge amount to reduce driving engine poor efficiency district work-hours.
For realizing above-mentioned purpose; Hybrid electric vehicle engine rapid starting/stopping of the present invention system; Comprise that entire car controller reaches and driving engine and engine controller, electrical generator and engine controller, closed-center system and closed-center system controller, drive motor and the electric machine controller of its difference control linkage, said engine controller comprises:
Engine shutdown decision logic module is used for judging according to drive motor rotating speed, accelerator open degree signal, speed-slackening signal and closed-center system voltage whether driving engine will shut down;
The engine shutdown logic module is used for the shutdown signal control driving engine quick shutdown of sending according to engine shutdown decision logic module;
Engine starting decision logic module is used for judging maintenance stopped status or start the engine according to closed-center system voltage and drive motor rotating speed;
The engine starting logic module is used for the actuation signal control driving engine quick operated start that sends according to engine starting decision logic module.
Further, said engine shutdown decision logic module is used for judging according to drive motor rotating speed, accelerator open degree signal, speed-slackening signal and closed-center system voltage whether driving engine satisfies the halt condition at idling, starting, braking and coasting mode.
Further, said engine shutdown logic module according to transmitting set shut down shutdown signal that the decision logic module sends be divided into dead halt, driving engine oil-break and by electrical generator instead drag, driving engine oil-break and inertia are counter drags three kinds of shutdown modes.
Further, said engine starting decision logic module is used for judging maintenance stopped status or start the engine according to closed-center system voltage, drive motor rotating speed and engine condition condition.
Hybrid electric vehicle engine high-speed starting and stopping control method of the present invention may further comprise the steps:
A. engine shutdown decision logic module judges according to drive motor rotating speed, accelerator open degree signal, speed-slackening signal and closed-center system voltage whether driving engine satisfies the halt condition at idling, starting, braking or coasting mode;
B. the engine shutdown logic module is according to the shutdown signal control driving engine quick shutdown of engine shutdown decision logic module transmission;
C. engine starting decision logic module is judged maintenance stopped status or start the engine according to closed-center system voltage and drive motor rotating speed;
D. the engine starting logic module is according to the actuation signal control driving engine quick operated start of engine starting decision logic module transmission.
Further, among the said step B engine shutdown logic module according to transmitting set shut down shutdown signal that the decision logic module sends be divided into dead halt, driving engine oil-break and by electrical generator instead drag, driving engine oil-break and inertia are counter drags three kinds of shutdown signals.
Further, engine starting decision logic module is judged maintenance stopped status or start the engine according to closed-center system voltage, drive motor rotating speed and engine condition condition among the said step C.
Further; After the engine starting logic module was received actuation signal among the said step D, electrical generator dragged driving engine, when generator speed during greater than the engine starting rotating speed K that sets; Entire car controller sends fuel injection signal and gives engine controller, and the driving engine oil spout starts.
Whether engine controller can come the real-time judge driving engine will shut down according to drive motor rotating speed, accelerator open degree signal, speed-slackening signal and closed-center system voltage in hybrid electric vehicle engine rapid starting/stopping system of the present invention and the control method thereof, and realizes quick shutdown; Can judge maintenance stopped status or start the engine according to closed-center system voltage and drive motor rotating speed, and can realize quick operated start.So just can realize engine high-efficiency work, reduce engine fuel consumption, reduce atmospheric contamination.
Description of drawings
Fig. 1 is a hybrid electric vehicle engine rapid starting/stopping system architecture scheme drawing;
Fig. 2 judges driving engine rapid starting/stopping control logic scheme drawing;
Fig. 3 is a driving engine quick shutdown module logical schematic;
Fig. 4 is a driving engine quick operated start module logical schematic.
The specific embodiment
As shown in Figure 1; Hybrid electric vehicle engine rapid starting/stopping system architecture comprises entire car controller, driving engine, engine controller, electrical generator, engine controller, belt-driving, magnetic clutch, drive motor, electric machine controller, closed-center system, closed-center system controller and electric annex (comprising electric powered steering, electric air compressor, electric air-conditioning, electricity defrosting at least).Engine controller comprises: engine shutdown decision logic module, engine shutdown logic module, engine starting decision logic module and engine starting logic module.
Engine shutdown decision logic module is to judge according to conditions such as drive motor rotating speed, accelerator open degree signal, speed-slackening signal and closed-center system voltages whether driving engine satisfies the requirement of shutting down at idling, starting, braking and coasting mode.
The engine shutdown logic module is to send shutdown signal by the engine shutdown decision logic; Be divided into three kinds of shutdown modes according to different shutdown signals; A kind ofly send to engine controller driving engine oil-break signal for entire car controller; Driving engine oil-break, generator brake drag stops paying out motivation, realizes quick shutdown; A kind ofly send to engine controller driving engine oil-break signal, driving engine oil-break, generator drive driving engine for entire car controller; A kind ofly send to engine controller driving engine oil-break signal for entire car controller; The driving engine oil-break; The anti-driving engine that drags of inertia, promptly be divided into driving engine dead halt, driving engine oil-break and by electrical generator instead drag, driving engine oil-break and inertia are counter drags different operating modes such as three kinds of different shapes adapt to idling, starting, brake and slide.
Engine starting decision logic module is used for judging maintenance stopped status or start the engine according to closed-center system voltage and drive motor rotating speed; Add the engine condition condition in the decision logic, confirm that by the engine controller feedback information whether driving engine shuts down, prevents the driving engine frequent start-stop.
The actuation signal that the engine starting logic module is used for sending according to engine starting decision logic module is controlled the driving engine quick operated start.Be that the engine starting decision logic sends actuation signal, electrical generator drags driving engine, and when generator speed during greater than K (the engine starting rotating speed of setting), entire car controller sends fuel injection signal and gives engine controller, and the driving engine oil spout starts.
Entire car controller has the CAN communication function, can carry out data scaling, trouble diagnosing through the CAN communication interface.
Shown in Figure 2 for judging driving engine rapid starting/stopping control logic scheme drawing.
As shown in Figure 2, the hybrid electric vehicle engine high-speed starting and stopping control method, concrete steps comprise:
Step 1: vehicle normally moves;
Step 2: judging whether the drive motor rotation speed n is 0, is execution in step 3 then, otherwise execution in step 12;
Step 3: whether judging the accelerator open degree signal greater than 0, is execution in step 12 then, otherwise execution in step 4;
Step 4: picking up counting to this stage, whether judge time length t1 greater than k (k is a selective value, optional 2-5s), be execution in step 5 then, otherwise driving engine normally moves;
Step 5: whether judging the closed-center system voltage U greater than U1 (U1 is the closed-center system driven upper limit), is execution in step 6 then, otherwise execution in step 35;
Step 6: open electric annex, to guarantee car load driving safety and traveling comfort;
Step 7: judging whether driving engine shuts down, is execution in step 9 then, otherwise execution in step 8;
Step 8: carry out driving engine dead halt pattern;
Step 9: keep engine shutdown;
Step 10: whether judging the closed-center system voltage U less than U2 (U2 is a closed-center system driven lower limit), is execution in step 35 then, otherwise execution in step 11;
Step 11: judging the drive motor rotation speed n whether less than engine starting rotating speed (be electrical generator counter drag rotating speed when starting), is execution in step 32 then, otherwise execution in step 9;
Step 12: judging whether motor speed when closed less than power-transfer clutch of drive motor rotation speed n, is execution in step 13 then, otherwise execution in step 25;
Step 13: whether judging the closed-center system voltage U greater than U1 (U1 is the closed-center system driven upper limit), is execution in step 14 then, otherwise execution in step 35;
Step 14: whether judging speed-slackening signal greater than 0, is execution in step 24 then, otherwise execution in step 15;
Step 15: calculating the time of quickening to arrive down the closed rotating speed of power-transfer clutch at present is t2, whether judges t2 greater than 2s, is execution in step 16 then, otherwise execution in step 35;
Step 16: open electric annex, to guarantee car load driving safety and traveling comfort;
Step 17: whether judging t2 greater than 10s, is execution in step 19 then, otherwise execution in step 18;
Step 18: carry out driving engine oil-break shutdown mode, drag by electrical generator is counter;
Step 19: judging whether driving engine shuts down, is execution in step 21 then, otherwise execution in step 20;
Step 20: carry out driving engine dead halt pattern;
Step 21: keep engine shutdown;
Step 22: whether judging the closed-center system voltage U less than U2 (U2 is a closed-center system driven lower limit), is execution in step 35 then, otherwise execution in step 23;
Step 23: whether judging t2 less than 2s, is execution in step 35 then, otherwise execution in step 21;
Step 24: carry out driving engine oil-break shutdown mode, drag back execution in step 29 by electrical generator is counter;
Step 25: whether judging the closed-center system voltage U greater than U1 (U1 is the closed-center system driven upper limit), is execution in step 26 then, otherwise execution in step 35;
Step 26: whether judging speed-slackening signal greater than 0, is execution in step 28 then, otherwise execution in step 27;
Step 27: whether judging throttle signal less than a (low throttle value of sliding of setting), is execution in step 28 then, otherwise execution in step 35;
Step 28: carry out driving engine oil-break shutdown mode, drag back execution in step 29 by inertia is counter;
Step 29: open electric annex, to guarantee car load driving safety and traveling comfort;
Step 30: keep engine shutdown;
Step 31: whether judging throttle signal less than a, is execution in step 28 then, otherwise execution in step 35;
Step 32: whether judging the closed-center system voltage U less than U2 (U2 is a closed-center system driven lower limit), is execution in step 35 then, otherwise execution in step 31;
Step 33: whether judging speed-slackening signal greater than 0, is execution in step 30 then, otherwise execution in step 35;
Step 34: carry out the engine starting pattern;
Step 35: judging driving engine whether in running, is execution in step 36 then, otherwise execution in step 34;
Step 36: driving engine normally moves.
Fig. 3 is a driving engine quick shutdown module logical schematic.As shown in Figure 3, driving engine quick shutdown control method comprises:
Step 37: the engine shutdown decision logic sends the engine shutdown signal, is divided into dead halt pattern and oil-break shutdown mode according to unlike signal, respectively execution in step 38 and step 42;
Step 38: carry out driving engine dead halt pattern;
Step 39: entire car controller sends to engine controller oil-break signal, driving engine oil-break;
Step 40: the mechanism of power generation energy, drag and stop paying out motivation;
Step 41: driving engine dead halt;
Step 42: carry out driving engine oil-break shutdown mode;
Step 43: entire car controller sends to engine controller oil-break signal, the driving engine oil-break, and the anti-driving engine that drags subsequently has electrical generator and the anti-pattern of dragging of inertia, respectively corresponding step 44 and step 45;
Step 44: electrical generator positive torque, the anti-driving engine that drags;
Step 45: the anti-driving engine that drags of inertia;
Step 46: the driving engine oil-break is shut down;
Step 47: finish the engine shutdown logic.
Fig. 4 is a driving engine quick operated start module logical schematic.As shown in Figure 4, driving engine quick operated start control method comprises:
Step 48: the engine starting decision logic sends Engine Start Signal;
Step 49: the anti-driving engine that drags of electrical generator;
Step 50: whether judging generator speed greater than K (the engine starting rotating speed of setting), is execution in step 51 then, otherwise execution in step 49;
Step 51: entire car controller sends to the engine controller fuel injection signal, and the driving engine oil spout starts;
Step 52: finish the engine starting logic.
Claims (8)
1. hybrid electric vehicle engine rapid starting/stopping system; Comprise that entire car controller reaches and driving engine and engine controller, electrical generator and engine controller, closed-center system and closed-center system controller, drive motor and the electric machine controller of its difference control linkage; It is characterized in that said engine controller comprises:
Engine shutdown decision logic module is used for judging according to drive motor rotating speed, accelerator open degree signal, speed-slackening signal and closed-center system voltage whether driving engine will shut down;
The engine shutdown logic module is used for the shutdown signal control driving engine quick shutdown of sending according to engine shutdown decision logic module;
Engine starting decision logic module is used for judging maintenance stopped status or start the engine according to closed-center system voltage and drive motor rotating speed;
The engine starting logic module is used for the actuation signal control driving engine quick operated start that sends according to engine starting decision logic module.
2. hybrid electric vehicle engine rapid starting/stopping according to claim 1 system; It is characterized in that: said engine shutdown decision logic module is used for judging according to drive motor rotating speed, accelerator open degree signal, speed-slackening signal and closed-center system voltage whether driving engine satisfies the halt condition at idling, starting, braking and coasting mode.
3. hybrid electric vehicle engine rapid starting/stopping according to claim 1 system is characterized in that: said engine shutdown logic module according to transmitting set shut down shutdown signal that the decision logic module sends be divided into dead halt, driving engine oil-break and by electrical generator instead drag, driving engine oil-break and inertia are counter drags three kinds of shutdown modes.
4. according to each described hybrid electric vehicle engine rapid starting/stopping system among the claim 1-3; It is characterized in that: said engine starting decision logic module is used for judging maintenance stopped status or start the engine according to closed-center system voltage, drive motor rotating speed and engine condition condition.
5. a hybrid electric vehicle engine high-speed starting and stopping control method is characterized in that, this method may further comprise the steps:
A. engine shutdown decision logic module judges according to drive motor rotating speed, accelerator open degree signal, speed-slackening signal and closed-center system voltage whether driving engine satisfies the halt condition at idling, starting, braking or coasting mode;
B. the engine shutdown logic module is according to the shutdown signal control driving engine quick shutdown of engine shutdown decision logic module transmission;
C. engine starting decision logic module is judged maintenance stopped status or start the engine according to closed-center system voltage and drive motor rotating speed;
D. the engine starting logic module is according to the actuation signal control driving engine quick operated start of engine starting decision logic module transmission.
6. hybrid electric vehicle engine high-speed starting and stopping control method according to claim 5 is characterized in that: among the said step B engine shutdown logic module according to transmitting set shut down shutdown signal that the decision logic module sends be divided into dead halt, driving engine oil-break and by electrical generator instead drag, driving engine oil-break and inertia are counter drags three kinds of shutdown signals.
7. according to claim 5 or 6 described hybrid electric vehicle engine high-speed starting and stopping control methods, it is characterized in that: engine starting decision logic module is judged maintenance stopped status or start the engine according to closed-center system voltage, drive motor rotating speed and engine condition condition among the said step C.
8. hybrid electric vehicle engine high-speed starting and stopping control method according to claim 7; It is characterized in that: after the engine starting logic module is received actuation signal among the said step D; Electrical generator drags driving engine; When generator speed during greater than the engine starting rotating speed K that sets, entire car controller sends fuel injection signal and gives engine controller, and the driving engine oil spout starts.
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| CN103465903A (en) * | 2013-09-23 | 2013-12-25 | 湖南南车时代电动汽车股份有限公司 | Engine stall control device and method for hybrid electric vehicle |
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| WO2016150361A1 (en) * | 2015-03-25 | 2016-09-29 | Byd Company Limited | Hybrid electric vehicle, drive control method and device of the same |
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| CN108313059A (en) * | 2018-03-28 | 2018-07-24 | 浙江吉利汽车研究院有限公司 | Engine start-up and shut-down control method, apparatus and system |
| CN109572667A (en) * | 2017-09-29 | 2019-04-05 | 比亚迪股份有限公司 | Hybrid vehicle and its engine halt control method and system |
| CN110103943A (en) * | 2019-04-18 | 2019-08-09 | 浙江吉利控股集团有限公司 | A kind of hybrid electric vehicle engine stops working control method and system |
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| CN111891112A (en) * | 2020-08-04 | 2020-11-06 | 清华大学苏州汽车研究院（吴江） | Hybrid electric vehicle engine start-stop control method, device, equipment and medium |
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| CN110103943A (en) * | 2019-04-18 | 2019-08-09 | 浙江吉利控股集团有限公司 | A kind of hybrid electric vehicle engine stops working control method and system |
| CN111891107A (en) * | 2019-11-26 | 2020-11-06 | 长城汽车股份有限公司 | Start-stop control method and device for vehicle, vehicle and electronic equipment |
| WO2021103966A1 (en) * | 2019-11-26 | 2021-06-03 | 长城汽车股份有限公司 | Vehicle start/stop control method and apparatus, vehicle, and electronic device |
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| CN111891112A (en) * | 2020-08-04 | 2020-11-06 | 清华大学苏州汽车研究院（吴江） | Hybrid electric vehicle engine start-stop control method, device, equipment and medium |
| WO2022041546A1 (en) * | 2020-08-28 | 2022-03-03 | 广西玉柴机器股份有限公司 | Range extender reverse rotation protection control system and method |
| CN113565164A (en) * | 2021-09-26 | 2021-10-29 | 徐工集团工程机械股份有限公司科技分公司 | Loader control system, loader, and loader control method |
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Application publication date: 20120613 |