CN101691118A - Motor-assistant driving mode control method of hybrid electric vehicle - Google Patents
Motor-assistant driving mode control method of hybrid electric vehicle Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Abstract
The invention relates to a motor-assistant driving mode control method of a hybrid electric vehicle, comprising the following steps: (1) if the vehicle is in an idle state, a hybrid control unit HCU judges whether the condition for the vehicle to enter a motor-assistant driving mode from the idle state is available or not in real time; if yes, the motor outputs an assistant torque for starting and preventing the motor from shutting down, otherwise, the motor returns to real-time judgement; (2) if the vehicle is in the driving process, the hybrid control unit HCU judges whether the condition for the vehicle to enter the motor-assistant driving mode from the driving state is available or not in real time; if yes, the motor outputs the assistant torque for speeding up and climbing, otherwise, the motor returns to real-time judgement. The control method judges the finished automobile state by the hybrid control unit HCU so as to judge whether the vehicle enters the motor-assistant driving mode or not and output corresponding assistant torque. The invention has stable conversion and improves driving comfortableness and driving performance.
Description
Technical field
The present invention relates to a kind of motor assistant driving mode control method of hybrid vehicle.
Background technology
Hybrid vehicle changes into electric energy by motor with kinetic energy, stores in the closed-center systems such as power accumulator; Under operating modes such as vehicle launch, acceleration, climbing, motor can utilize these electric energy to come to provide auxiliary driving force for vehicle, thereby improves the performance of vehicle, reduces oil consumption, emission abatement.In recent years, the U.S., Europe, each big car company of Japan begin to develop the mixed motivity type automobile one after another, and following hybrid vehicle has huge development prospect.
Most now hybrid power manned vehicles is all realized certain oil-saving effect by reducing engine swept volume, but it is dead that the driving engine of little discharge capacity is easy to suppress when starting, if once more by the key start the engine, can cause the frequent oil spout igniting of driving engine, influence oil consumption and discharging.Present hybrid power manned vehicle is mostly selected in-line hybrid drive arrangement, motor and driving engine are coaxial, the motor assistive drive pattern of serial type hybrid automobile can provide the torque mode of starting, keep the engine alive and the torque mode of acceleration and climbing, synthesize the moment that powered vehicle is travelled with driving engine, motor has had such mode of operation can allow driving engine prevent to stop working when starting, can also quicken, provide when climbing extra power, thereby improve the fuel economy of car load, reduce discharging.Yet, the motor assistive drive pattern of serial type hybrid automobile and other patterns between when changing because switching process is not steady, influence the traveling comfort and the driving performance of car load.
Summary of the invention
The object of the present invention is to provide a kind of can guarantee between the pattern conversion steadily, improve the motor assistant driving mode control method of the hybrid vehicle of the traveling comfort driven and driving performance.
For achieving the above object, the present invention has adopted following technical scheme: a kind of motor assistant driving mode control method of hybrid vehicle, and this method comprises the step of following order:
(1) if car load remains static, then whether hybrid controller HCU real-time judge car load is set up from the condition that quiescence enters motor assistive drive pattern, if judged result is for being, then motor output starts to walk and the auxiliary torque of keep the engine alive; Otherwise, return real-time judge;
(2) if car load is in the driving process, then whether hybrid controller HCU real-time judge car load is set up from the condition that motoring condition enters motor assistive drive pattern, if judged result is for being, and the motor output auxiliary torque quickening and climb then; Otherwise, return real-time judge.
As shown from the above technical solution, hybrid controller HCU of the present invention is by the state of judging car load, the aperture of efp, the rotating speed of driving engine, the state and the speed of a motor vehicle of electric clutch, thereby judge whether car load enters motor assistive drive pattern, and export corresponding auxiliary torque, conversion is steady, the traveling comfort and the driving performance of raising driving.Simultaneously, motor assistive drive pattern can provide moment of torsion to car load when starting, climbing, acceleration, and the moment of torsion that satisfies under the various situations is auxiliary, utilizes electric energy to provide auxiliary driving force for vehicle, thereby has improved the performance of vehicle, has reduced oil consumption, has reduced discharging.
Description of drawings
Fig. 1 is a mechanical connection sketch of the present invention;
Fig. 2 is the sketch that is electrically connected of the present invention;
Fig. 3 is vehicle enters start to walk auxiliary and keep the engine alive pattern from quiescence a workflow diagram;
Fig. 4 is that vehicle enters the workflow diagram that quickens and climb auxiliary mode in the process of moving.
The specific embodiment
A kind of motor assistant driving mode control method of hybrid vehicle, this method comprises the step of following order: first, if car load remains static, then whether hybrid controller HCU real-time judge car load is set up from the condition that quiescence enters motor assistive drive pattern, if judged result is for being, then motor 2 outputs start to walk and the auxiliary torque of keep the engine alive; Otherwise, return real-time judge; The second, if car load is in the driving process, then whether hybrid controller HCU real-time judge car load is set up from the condition that motoring condition enters motor assistive drive pattern, if judged result is for being, and the motor 2 outputs auxiliary torque quickening and climb then; Otherwise, return real-time judge, shown in Fig. 3,4, motor assistive drive pattern is divided into two kinds of patterns: the auxiliary and keep the engine alive pattern of first starting, it two is to quicken and the climbing auxiliary mode, wherein, starting is auxiliary is divided into starting auxiliary mode and keep the engine alive pattern again with the keep the engine alive pattern.Therefore, need distinguish judgement to the running state of vehicle.
In conjunction with Fig. 1,2, the present invention adopts the type of drive of the coaxial serial mixed power of driving engine 1 and motor 2: described motor 2 and driving engine 1 coaxial arrangement, motor 2 is for driving and generating integrated motor, one end of motor 2 links to each other with the bent axle of driving engine 1, the other end links to each other with change speed gear box 4 by electric clutch 3, and change speed gear box 4 is connected with wheel 5 by transmission shaft 6.Described hybrid controller HCU, engine management system EMS, battery management system BMS, electric machine controller MCU are by CAN bus and the communication of car load CAN bus network, the electric weight one tunnel of power accumulator 7 storages exports motor 2 to through driving circuit or inverter, another road exports the 12V A-battery to through DC converter DC-DC, and driving circuit or inverter, motor 2 link to each other with electric machine controller MCU respectively.The CAN network of car load CAN bus network and hybrid controller HCU and the CAN network of engine management system EMS are to belong to a CAN network, and be mutual by bus; Energy is from driving engine 1 output, and part is used for advancing for car load, and part is used for generating and reclaims braking having 7 li of power accumulators; When needs provided auxiliary torque, energy was from power accumulator 7 motor 2 of flowing through, arrive again drive wheel and driving engine 1 together powered vehicle advance, under the normal condition, the electricity of power accumulator 7 be used to provide the car load low-voltage load and to baby battery charging use.
Below in conjunction with Fig. 1,2,3,4 the present invention is further illustrated.
In conjunction with Fig. 3, if car load remains static, whether described hybrid controller HCU at first real-time judge car load satisfies car load assistive drive condition, if do not satisfy, then returns real-time judge; If satisfy, then in the process of starting, whether the requested torque of hybrid controller HCU real-time judge chaufeur is less than the driving engine 1 current torque peak that can provide, if judged result is for being, it is the torque peak that the requested torque of chaufeur can provide less than present engine 1, starting starting auxiliary mode auxiliary and the keep the engine alive pattern just comes into force, otherwise returns real-time judge, is that motor 2 also is in the starting auxiliary mode during for fear of the chaufeur brish acceleration herein.Simultaneously, hybrid controller HCU real-time judge electric clutch 3 whether is in the semi-linkage state always or whether the real-time judge speed of a motor vehicle is low excessively, if judged result is for being, be that the speed of a motor vehicle is crossed low or power-transfer clutch is in the semi-linkage state always, can judge that then chaufeur is certainly in starting, starting is auxiliary to be activated with the keep the engine alive pattern, otherwise, return real-time judge.
In conjunction with Fig. 3, described hybrid controller HCU parses the auxiliary torque peak of starting according to current efp 8 apertures, rotating speed according to current driving engine 1 parses the flame-out torque peak that prevents driving engine 1 simultaneously, universal curve figure according to driving engine, can table look-up and draw the auxiliary torque peak of starting and prevent the torque peak that driving engine 1 stops working, compare two moments of torsion then, get big moment of torsion and multiply by speed of a motor vehicle proportionality coefficient assisted and prevented driving engine 1 as the maximum starting that can provide when front motor 2 flame-out moment of torsion.Described speed of a motor vehicle proportionality coefficient is: [1-(V
EL-V
TOP)/(V
TOP-V
NO)], V wherein
ELBe current vehicle speed, V
TOPThe highest auxiliary torque speed of a motor vehicle that provides, V are provided
NOFor the speed of a motor vehicle of auxiliary torque is not provided.As seen, the speed of a motor vehicle is more near V
TOP, the auxiliary torque of motor 2 is just more little.
In conjunction with Fig. 3, described car load assistive drive condition is meant that vehicle satisfies capacity of cell SOC that transmission system operates in non-idling pattern, car load trouble free, power accumulator 7 in conjunction with, driving engine 1 simultaneously and is higher than certain value, gear and all is not operated at forward gear and electric clutch 3 and brake, judges that to satisfy car load assistive drive condition chaufeur has the intention of driveaway operation.The capacity of cell SOC of power accumulator 7 is higher than certain value and is meant that power accumulator 7 has enough electric energy, and promptly the capacity of cell SOC of power accumulator 7 could allow to enter motor assistive drive pattern greater than a certain threshold value.
In conjunction with Fig. 4, if car load is in the driving process, whether described hybrid controller HCU real-time judge car load satisfies the torque peak whether car load assistive drive condition, chaufeur requested torque can provide greater than present engine 1, if above-mentioned judged result is and is, then car load enters the acceleration and the climbing auxiliary mode of motor assistive drive pattern, the auxiliary torque that motor 2 outputs are quickened and climbed; Otherwise, return real-time judge.Here car load assistive drive condition is with above-mentioned car load drive condition.Described hybrid controller HCU parses the torque peak of chaufeur request according to current efp 8 apertures, and the acceleration of motor 2 outputs and climbing auxiliary torque deduct the torque peak that present engine 1 can provide for the torque peak of current driver's request.
In sum, the present invention judges the state of car load, the aperture of efp 8, the rotating speed of driving engine 1, the state and the speed of a motor vehicle of electric clutch 3 by hybrid controller HCU, thereby judge whether car load enters motor assistive drive pattern, and export corresponding auxiliary torque, conversion is steady, the traveling comfort and the driving performance of raising driving.
Claims (9)
1. the motor assistant driving mode control method of a hybrid vehicle, this method comprises the step of following order:
(1) if car load remains static, then whether hybrid controller HCU real-time judge car load is set up from the condition that quiescence enters motor assistive drive pattern, if judged result is for being, then motor output starts to walk and the auxiliary torque of keep the engine alive; Otherwise, return real-time judge;
(2) if car load is in the driving process, then whether hybrid controller HCU real-time judge car load is set up from the condition that motoring condition enters motor assistive drive pattern, if judged result is for being, and the motor output auxiliary torque quickening and climb then; Otherwise, return real-time judge.
2. the motor assistant driving mode control method of hybrid vehicle according to claim 1, it is characterized in that: if car load remains static, whether described hybrid controller HCU at first real-time judge car load satisfies car load assistive drive condition, if judged result is for being, then in the process of starting, whether the requested torque of hybrid controller HCU real-time judge chaufeur is less than the current torque peak that can provide of driving engine, and whether the real-time judge electric clutch is in the semi-linkage state always or whether the real-time judge speed of a motor vehicle is low excessively, if above-mentioned judged result is and is, then car load enters the auxiliary and keep the engine alive pattern of starting of motor assistive drive pattern, the auxiliary torque of motor output starting and keep the engine alive; Otherwise, return real-time judge.
3. the motor assistant driving mode control method of hybrid vehicle according to claim 1, it is characterized in that: if car load is in the driving process, whether described hybrid controller HCU real-time judge car load satisfies the torque peak whether car load assistive drive condition, chaufeur requested torque can provide greater than present engine, if above-mentioned judged result is and is, then car load enters the acceleration and the climbing auxiliary mode of motor assistive drive pattern, the auxiliary torque that motor output is quickened and climbed; Otherwise, return real-time judge.
4. the motor assistant driving mode control method of hybrid vehicle according to claim 1, it is characterized in that: described motor and driving engine coaxial arrangement, one end of motor links to each other with engine crankshaft, the other end links to each other with change speed gear box by electric clutch, and change speed gear box is connected with wheel by transmission shaft.
5. the motor assistant driving mode control method of hybrid vehicle according to claim 1, it is characterized in that: described hybrid controller HCU, engine management system EMS, battery management system BMS, electric machine controller MCU are by CAN bus and the communication of car load CAN bus network, the electric weight one tunnel of power accumulator storage exports motor to through driving circuit or inverter, another road exports the 12V A-battery to through DC converter DC-DC, and driving circuit or inverter, motor link to each other with electric machine controller MCU respectively.
6. according to the motor assistant driving mode control method of claim 2 or 3 described hybrid vehicles, it is characterized in that: described car load assistive drive condition is meant that vehicle satisfies transmission system simultaneously and operates in non-idling pattern, car load trouble free, power accumulator accumulator capacity SOC in conjunction with, driving engine and be higher than certain value, gear and all be not operated at forward gear and electric clutch and brake.
7. the motor assistant driving mode control method of hybrid vehicle according to claim 2, it is characterized in that: described hybrid controller HCU parses maximum starting auxiliary torque according to current efp aperture, parse maximum keep the engine alive moment of torsion according to current engine speed simultaneously, two moments of torsion are relatively got big moment of torsion and be multiply by speed of a motor vehicle proportionality coefficient as the auxiliary and keep the engine alive moment of torsion of maximum starting that can provide when front motor then.
8. the motor assistant driving mode control method of hybrid vehicle according to claim 3, it is characterized in that: described hybrid controller HCU parses the torque peak of chaufeur request according to current efp aperture, and the acceleration of motor output and climbing auxiliary torque deduct the torque peak that present engine can provide for the torque peak of current driver's request.
9. the motor assistant driving mode control method of hybrid vehicle according to claim 5, it is characterized in that: described speed of a motor vehicle proportionality coefficient is: [1-(V
EL-V
TOP)/(V
TOP-V
NO)], V wherein
ELBe current vehicle speed, V
TOPThe highest auxiliary torque speed of a motor vehicle that provides, V are provided
NOFor the speed of a motor vehicle of auxiliary torque is not provided.
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| CN200910145200.5A CN101691118B (en) | 2009-10-13 | 2009-10-13 | Motor-assistant driving mode control method of hybrid electric vehicle |
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Cited By (18)
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| CN102009649A (en) * | 2010-12-01 | 2011-04-13 | 重庆长安汽车股份有限公司 | Limited torque clutch control method for power coupling device of hybrid vehicle |
| CN102009651A (en) * | 2010-11-24 | 2011-04-13 | 北京汽车新能源汽车有限公司 | Method for controlling EV-AT deep hybrid vehicle |
| CN102009652A (en) * | 2010-12-01 | 2011-04-13 | 重庆长安汽车股份有限公司 | Method for controlling hybrid electric vehicle to enter hybrid drive mode from pure electric mode |
| CN102069796A (en) * | 2010-12-16 | 2011-05-25 | 奇瑞汽车股份有限公司 | Hybrid electric vehicle start auxiliary control method |
| CN103183022A (en) * | 2011-12-31 | 2013-07-03 | 上海汽车集团股份有限公司 | Torque control method and system for idle run of motor of hybrid electric vehicle |
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| CN104828091A (en) * | 2014-10-24 | 2015-08-12 | 北汽福田汽车股份有限公司 | Method, device and system of compensating torque of turbocharged engine |
| CN104989537A (en) * | 2015-05-27 | 2015-10-21 | 安徽江淮汽车股份有限公司 | Anti-flameout control method for hybrid power engine |
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| CN105501215A (en) * | 2014-10-10 | 2016-04-20 | 丰田自动车株式会社 | A control apparatus for a vehicle |
| CN106274883A (en) * | 2016-08-29 | 2017-01-04 | 北京新能源汽车股份有限公司 | The control method of hybrid vehicle, device and automobile |
| CN111703414A (en) * | 2020-03-27 | 2020-09-25 | 北京致行慕远科技有限公司 | Method for controlling an all-terrain vehicle |
| CN113428132A (en) * | 2021-08-03 | 2021-09-24 | 安徽江淮汽车集团股份有限公司 | Control method of hybrid power assembly |
| CN113715803A (en) * | 2020-05-22 | 2021-11-30 | 广州汽车集团股份有限公司 | Controller, control method and medium for vehicle with hybrid coupling system |
| CN113734144A (en) * | 2021-08-26 | 2021-12-03 | 华人运通(江苏)技术有限公司 | Mode control method, device and system of power system of vehicle and vehicle |
| CN115571111A (en) * | 2022-11-23 | 2023-01-06 | 中国第一汽车股份有限公司 | Mode switching control method for ISG hybrid vehicle power system, vehicle and storage medium |
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2009
- 2009-10-13 CN CN200910145200.5A patent/CN101691118B/en active Active
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| CN102009651A (en) * | 2010-11-24 | 2011-04-13 | 北京汽车新能源汽车有限公司 | Method for controlling EV-AT deep hybrid vehicle |
| CN102009651B (en) * | 2010-11-24 | 2013-06-19 | 北京汽车新能源汽车有限公司 | Method for controlling EV-AT deep hybrid vehicle |
| CN102009649A (en) * | 2010-12-01 | 2011-04-13 | 重庆长安汽车股份有限公司 | Limited torque clutch control method for power coupling device of hybrid vehicle |
| CN102009652A (en) * | 2010-12-01 | 2011-04-13 | 重庆长安汽车股份有限公司 | Method for controlling hybrid electric vehicle to enter hybrid drive mode from pure electric mode |
| CN102069796A (en) * | 2010-12-16 | 2011-05-25 | 奇瑞汽车股份有限公司 | Hybrid electric vehicle start auxiliary control method |
| CN103183022A (en) * | 2011-12-31 | 2013-07-03 | 上海汽车集团股份有限公司 | Torque control method and system for idle run of motor of hybrid electric vehicle |
| CN103183022B (en) * | 2011-12-31 | 2016-05-18 | 上海汽车集团股份有限公司 | Torque control method and the system of hybrid vehicle electricity idling |
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| CN104290601A (en) * | 2013-12-10 | 2015-01-21 | 郑州宇通客车股份有限公司 | Method for judging pure electric car breaking down |
| CN105501215A (en) * | 2014-10-10 | 2016-04-20 | 丰田自动车株式会社 | A control apparatus for a vehicle |
| CN104309604A (en) * | 2014-10-14 | 2015-01-28 | 奇瑞汽车股份有限公司 | Rear wheel auxiliary electric drive control method |
| CN104828091A (en) * | 2014-10-24 | 2015-08-12 | 北汽福田汽车股份有限公司 | Method, device and system of compensating torque of turbocharged engine |
| CN104989537A (en) * | 2015-05-27 | 2015-10-21 | 安徽江淮汽车股份有限公司 | Anti-flameout control method for hybrid power engine |
| CN104989537B (en) * | 2015-05-27 | 2017-04-12 | 安徽江淮汽车集团股份有限公司 | Anti-flameout control method for hybrid power engine |
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| CN111703414A (en) * | 2020-03-27 | 2020-09-25 | 北京致行慕远科技有限公司 | Method for controlling an all-terrain vehicle |
| CN111703414B (en) * | 2020-03-27 | 2022-09-30 | 九号智能(常州)科技有限公司 | Method for controlling an all-terrain vehicle |
| CN113715803A (en) * | 2020-05-22 | 2021-11-30 | 广州汽车集团股份有限公司 | Controller, control method and medium for vehicle with hybrid coupling system |
| CN113428132A (en) * | 2021-08-03 | 2021-09-24 | 安徽江淮汽车集团股份有限公司 | Control method of hybrid power assembly |
| CN113734144A (en) * | 2021-08-26 | 2021-12-03 | 华人运通(江苏)技术有限公司 | Mode control method, device and system of power system of vehicle and vehicle |
| CN115571111A (en) * | 2022-11-23 | 2023-01-06 | 中国第一汽车股份有限公司 | Mode switching control method for ISG hybrid vehicle power system, vehicle and storage medium |
| CN115571111B (en) * | 2022-11-23 | 2023-03-24 | 中国第一汽车股份有限公司 | Mode switching control method for ISG hybrid vehicle power system, vehicle and storage medium |
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|---|---|
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