CN102180167A - Method for controlling engine revolution speed during starting of hybrid power vehicle - Google Patents

Method for controlling engine revolution speed during starting of hybrid power vehicle Download PDF

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Publication number
CN102180167A
CN102180167A CN2011100958430A CN201110095843A CN102180167A CN 102180167 A CN102180167 A CN 102180167A CN 2011100958430 A CN2011100958430 A CN 2011100958430A CN 201110095843 A CN201110095843 A CN 201110095843A CN 102180167 A CN102180167 A CN 102180167A
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China
Prior art keywords
engine
speed
isg motor
hybrid vehicle
revolution speed
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Pending
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CN2011100958430A
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Chinese (zh)
Inventor
孙四军
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Chery Automobile Co Ltd
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SAIC Chery Automobile Co Ltd
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Application filed by SAIC Chery Automobile Co Ltd filed Critical SAIC Chery Automobile Co Ltd
Priority to CN2011100958430A priority Critical patent/CN102180167A/en
Publication of CN102180167A publication Critical patent/CN102180167A/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/40Engine management systems
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/62Hybrid vehicles

Abstract

The invention aims at providing a method for controlling engine revolution speed during starting of a hybrid power vehicle, in order to improve the fuel economy of the entire vehicle, reduce emission, lighten environmental pollution and improve the NVH (Noise Vibration and Harshness) performances of the entire vehicle. In the method, an ISG (Integrated Starter Generator) motor is used for driving an engine to rotate, the key point is that the engine is controlled to perform oil injection and ignition when the revolution speed of the engine is increased to exceed a first preset revolution speed by the ISG motor, and the ISG motor retreats a speed mode at the same time. In the method for controlling the engine revolution speed during starting of the hybrid power vehicle, by controlling the ignition time of the engine and the working mode variation of the ISG motor in a starting stage, the starting peak revolution speed of the engine is decreased, the fuel economy of the entire vehicle is further improved, and pollutant emission and environment pollution caused by the same are reduced, meanwhile, the NVH performances of the entire vehicle are improved.

Description

The control method of engine speed when a kind of hybrid vehicle starts
Technical field
The invention belongs to the hybrid vehicle technical field, the control method of engine speed when specially referring to a kind of hybrid vehicle and starting.
Background technology
Hybrid vehicle is a kind of energy-saving and environment-friendly automobile, and its energy-conservation and characteristic environmental protection is that hybrid vehicle is subjected to the key factor that client and government welcome, and therefore must consider these factors by emphasis when the design hybrid vehicle.
Present hybrid vehicle is after shutting down; when explosive motor need start; need utilize motor to drag turn of engine; when beginning to rotate, driving engine lights a fire with regard to commencement of fuel injection; so not only cause engine speed to dash very highly easily, make more multiple fuel and cause more disposal of pollutants of engine combustion, also can between the unexpected ignition under the slow speed of revolution situation makes driving engine and electrode, cooperate not smooth because of driving engine; cause physical shock between the two, influence the NVH performance of car load.Therefore, for the fuel economy that improves car load, reduce discharging, reduce environmental pollution and improve the NVH performance of car load, the rotating speed in the time of must the control engine starting.
Summary of the invention
The control method of engine speed when the objective of the invention is to propose a kind of hybrid vehicle and starting is with the fuel economy that improves car load, reduce discharging, reduce environmental pollution and improve the NVH performance of car load.
The control method of engine speed when hybrid vehicle of the present invention starts, utilize the ISG motor to drive turn of engine, key is the rotating speed of driving engine to be brought up to above after first desired speed when the ISG motor, the control driving engine carries out the oil spout igniting, simultaneously ISG motor rate of withdraw pattern.
After bringing up to first desired speed, engine speed carries out driving engine oil spout igniting again, avoided driving engine to make cooperating between driving engine and the electrode not smooth in the unexpected ignition under the slow speed of revolution situation, cause physical shock between the two, when also having avoided simultaneously the igniting of engine low rotation speed, motor must impose on the bigger drawing force of driving engine simultaneously to drive turn of engine, cause engine speed to dash too highly, cause the fuel economy of car load to descend, discharging such as increases at problem.
Further, after engine ignition, ISG motor rate of withdraw pattern and enter zero torque mode, and after first predetermined interval, enter the power generation torque pattern again, apply power generation torque to driving engine and finish up to start-up course.At engine ignition and after moving first predetermined interval, the operation of driving engine tends towards stability, but its rotating speed still might dash too highly, apply certain power generation torque to driving engine this moment, just engine rpm too high can be prevented, kinetic energy too much under the engine starting state can also be made full use of simultaneously.In addition, by between velocity mode and power generation torque pattern, increasing by one zero torque mode, can also make the rotation speed change curve of driving engine more level off to smooth curve, and be unlikely to make the rotating speed of driving engine sharply to reduce suddenly, thereby improve the NVH performance of car load.
Further, when utilizing the ISG motor when driving engine applies power generation torque, the rotating speed of driving engine is high more, and the power generation torque that is applied is big more.
Described first desired speed is 400 rev/mins~500 rev/mins, when engine speed surpasses 500 rev/mins, its emission behavior can decline to a great extent, therefore must be controlled, and when engine speed is lower than 400 rev/mins, its work is unstable as yet, also needs to utilize the ISG motor to drive.
Specifically, described first predetermined interval is at least 100 milliseconds, and the too short meeting of this pitch time causes the work of driving engine stable inadequately, causes the engine speed steep variation, influences the NVH performance of car load, even can make engine off.
Further, when above-mentioned hybrid vehicle starts in the control method of engine speed, after the described ISG motor rate of withdraw pattern, the ISG motor at first enters zero torque mode, if engine speed is higher than second desired speed in second predetermined interval, then enter the power generation torque pattern, otherwise keep zero torque mode to finish up to start-up course, described first desired speed is less than second desired speed.Under zero torque mode state, if the rotating speed at driving engine is only slightly high than first desired speed, control ISG motor enters the power generation torque pattern under the still acceptable situation of its emission behavior, might cause the rotating speed of driving engine to be lower than the needed rotating speed of stable operation quickly, cause problems such as engine off, therefore certain buffering preferably is set observes the stage, only the rotating speed of driving engine surpasses second desired speed under zero torque mode state, the rotating speed that driving engine just is described is too high, enter the power generation torque pattern this moment again, it controls better effects if, has also avoided the problem of engine off.
Specifically, described second predetermined interval is 120~150 milliseconds, and is accurate with the rotating speed sampled data that guarantees driving engine, and guarantees that driving engine can not keep the long time under the situation of excessive speeds, thereby reduces the discharging of pollutants.
When hybrid vehicle of the present invention starts the control method of engine speed by the control driving engine point of ignition and the ISG motor the unloading phase operational mode change, reduced the startup peak speed of driving engine, and then improved the fuel economy of car load, reduce the discharging of pollutants and the environmental pollution that causes, improved the NVH performance of car load simultaneously.
Description of drawings
Fig. 1 is the diagram of circuit of the hybrid vehicle of embodiment 1 control method of engine speed when starting.
Fig. 2 is the diagram of circuit of the hybrid vehicle of embodiment 2 control method of engine speed when starting.
Fig. 3 is the diagram of circuit of the hybrid vehicle of embodiment 3 control method of engine speed when starting.
The specific embodiment
Describe the present invention in detail below in conjunction with specific embodiments and the drawings.
Embodiment 1:
As shown in Figure 1, when the hybrid vehicle of present embodiment starts in the control method of engine speed, the ISG motor is in parallel with driving engine, after receiving Engine Start Signal, ISG motor admission velocity pattern utilizes the ISG motor to drive turn of engine, and after the ISG motor is brought up to the rotating speed of driving engine above 500 rev/mins of first desired speeds, the control driving engine carries out the oil spout igniting, simultaneously ISG motor rate of withdraw pattern.
Embodiment 2:
As shown in Figure 2, as different from Example 1, when the hybrid vehicle of present embodiment starts in the control method of engine speed, after ISG motor rate of withdraw pattern, at first enter zero torque mode, and after 100 milliseconds of first predetermined intervals, enter the power generation torque pattern again and apply power generation torque to driving engine and finish up to start-up course.
When utilizing the ISG motor when driving engine applies power generation torque, the rotating speed of driving engine is high more, and the power generation torque that is applied is big more.
Embodiment 3:
As shown in Figure 3, different with embodiment 1,2 is, when the hybrid vehicle of present embodiment starts in the control method of engine speed, after the ISG motor rate of withdraw pattern, the ISG motor at first enters zero torque mode, if engine speed is higher than 600 rev/mins of second desired speeds in second predetermined interval (150 milliseconds), then enters the power generation torque pattern, otherwise keep zero torque mode to finish up to start-up course.

Claims (7)

1. the control method of engine speed when a hybrid vehicle starts, utilize the ISG motor to drive turn of engine, it is characterized in that the rotating speed of driving engine being brought up to above after first desired speed when the ISG motor, the control driving engine carries out the oil spout igniting, simultaneously ISG motor rate of withdraw pattern.
2. the control method of engine speed when hybrid vehicle according to claim 1 starts, it is characterized in that after engine ignition, ISG motor rate of withdraw pattern and enter zero torque mode, and after first predetermined interval, enter the power generation torque pattern again, apply power generation torque to driving engine and finish up to start-up course.
3. the control method of engine speed is characterized in that utilizing the ISG motor when driving engine applies power generation torque when hybrid vehicle according to claim 2 started, and the rotating speed of driving engine is high more, and the power generation torque that is applied is big more.
4. the control method of engine speed is characterized in that described first desired speed is 400 rev/mins~500 rev/mins when hybrid vehicle according to claim 3 started.
5. the control method of engine speed is characterized in that described first predetermined interval is at least 100 milliseconds when hybrid vehicle according to claim 3 started.
6. the control method of engine speed when hybrid vehicle according to claim 2 starts, after it is characterized in that described ISG motor rate of withdraw pattern, the ISG motor at first enters zero torque mode, if engine speed is higher than second desired speed in second predetermined interval, then enter the power generation torque pattern, otherwise keep zero torque mode to finish up to start-up course, described first desired speed is less than second desired speed.
7. the control method of engine speed is characterized in that described second predetermined interval is 120~150 milliseconds when hybrid vehicle according to claim 6 started.
CN2011100958430A 2011-04-18 2011-04-18 Method for controlling engine revolution speed during starting of hybrid power vehicle Pending CN102180167A (en)

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102874256A (en) * 2012-06-19 2013-01-16 浙江吉利汽车研究院有限公司杭州分公司 Method for starting hybrid sedan
CN103807038A (en) * 2012-11-07 2014-05-21 上海汽车集团股份有限公司 Device and method for controlling rotating speed of engine of ISG type hybrid electric vehicle
CN104052194A (en) * 2013-03-12 2014-09-17 罗伯特·博世有限公司 Electric Machine In A Motor Vehicle Having A Rotational Speed Signal Input
CN104554240A (en) * 2014-12-31 2015-04-29 郑州宇通客车股份有限公司 Serial-to-parallel control method of electrical-electric connecting type hybrid power system
CN104773159A (en) * 2015-05-04 2015-07-15 重庆长安汽车股份有限公司 Method and system for controlling start of engine of hybrid electric vehicle
CN104842994A (en) * 2014-08-29 2015-08-19 北汽福田汽车股份有限公司 Engine starting control method and system
CN104859635A (en) * 2015-05-15 2015-08-26 北汽福田汽车股份有限公司 Engine control method of hybrid vehicle, engine control system of hybrid vehicle and hybrid vehicle
CN104981386A (en) * 2013-02-12 2015-10-14 三菱自动车工业株式会社 Hybrid vehicle
CN108422991A (en) * 2018-03-29 2018-08-21 吉利汽车研究院(宁波)有限公司 The control method of flexible four-cylinder, apparatus and system
CN110654371A (en) * 2018-06-29 2020-01-07 比亚迪股份有限公司 Control method and device of vehicle power system and vehicle
CN111762149A (en) * 2020-06-29 2020-10-13 广西玉柴机器股份有限公司 Starting control method of extended-range hybrid power gas vehicle
CN112572406A (en) * 2019-09-27 2021-03-30 比亚迪股份有限公司 Method and device for controlling vehicle, storage medium and vehicle
CN114347971A (en) * 2020-09-30 2022-04-15 丰田自动车株式会社 Vehicle control device
CN114645787A (en) * 2017-05-02 2022-06-21 图拉技术公司 Deceleration cylinder cutoff in hybrid vehicle
CN115214603A (en) * 2022-02-18 2022-10-21 广州汽车集团股份有限公司 Hybrid vehicle starting method, hybrid vehicle starting device, electronic apparatus, and storage medium

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CN101947915A (en) * 2010-09-03 2011-01-19 中国汽车技术研究中心 Engine start-stop controlling method in switching process of strong hybrid power operating modes of automobile

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JP2003322073A (en) * 2002-05-01 2003-11-14 Nissan Motor Co Ltd Starting control device for engine
US6942594B2 (en) * 2003-01-21 2005-09-13 Suzuki Motor Corporation Automatic stop/start controller for an engine
CN1819932A (en) * 2003-08-12 2006-08-16 日产柴油机车工业株式会社 Hybrid vehicle and method for controlling it
US20050229890A1 (en) * 2004-04-20 2005-10-20 Kazuhiro Ichimoto Auto start-stop device for internal combustion engine and motor vehicle equipped with auto start-stop device
CN1986309A (en) * 2006-12-08 2007-06-27 奇瑞汽车有限公司 Engine start control method for mixed power automobile
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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102874256A (en) * 2012-06-19 2013-01-16 浙江吉利汽车研究院有限公司杭州分公司 Method for starting hybrid sedan
CN102874256B (en) * 2012-06-19 2015-03-25 浙江吉利汽车研究院有限公司杭州分公司 Method for starting hybrid sedan
CN103807038A (en) * 2012-11-07 2014-05-21 上海汽车集团股份有限公司 Device and method for controlling rotating speed of engine of ISG type hybrid electric vehicle
CN104981386A (en) * 2013-02-12 2015-10-14 三菱自动车工业株式会社 Hybrid vehicle
CN104052194A (en) * 2013-03-12 2014-09-17 罗伯特·博世有限公司 Electric Machine In A Motor Vehicle Having A Rotational Speed Signal Input
US9885334B2 (en) 2013-03-12 2018-02-06 Robert Bosch Gmbh Electric machine in a motor vehicle having a rotational speed signal input
CN104842994A (en) * 2014-08-29 2015-08-19 北汽福田汽车股份有限公司 Engine starting control method and system
CN104554240A (en) * 2014-12-31 2015-04-29 郑州宇通客车股份有限公司 Serial-to-parallel control method of electrical-electric connecting type hybrid power system
CN104773159A (en) * 2015-05-04 2015-07-15 重庆长安汽车股份有限公司 Method and system for controlling start of engine of hybrid electric vehicle
CN104773159B (en) * 2015-05-04 2017-06-16 重庆长安汽车股份有限公司 Engine start control method for mixed power automobile and system
CN104859635B (en) * 2015-05-15 2017-10-10 北汽福田汽车股份有限公司 Engine control, system and the motor vehicle driven by mixed power of motor vehicle driven by mixed power
CN104859635A (en) * 2015-05-15 2015-08-26 北汽福田汽车股份有限公司 Engine control method of hybrid vehicle, engine control system of hybrid vehicle and hybrid vehicle
CN114645787A (en) * 2017-05-02 2022-06-21 图拉技术公司 Deceleration cylinder cutoff in hybrid vehicle
CN108422991A (en) * 2018-03-29 2018-08-21 吉利汽车研究院(宁波)有限公司 The control method of flexible four-cylinder, apparatus and system
CN110654371A (en) * 2018-06-29 2020-01-07 比亚迪股份有限公司 Control method and device of vehicle power system and vehicle
CN112572406A (en) * 2019-09-27 2021-03-30 比亚迪股份有限公司 Method and device for controlling vehicle, storage medium and vehicle
CN111762149A (en) * 2020-06-29 2020-10-13 广西玉柴机器股份有限公司 Starting control method of extended-range hybrid power gas vehicle
CN114347971A (en) * 2020-09-30 2022-04-15 丰田自动车株式会社 Vehicle control device
CN114347971B (en) * 2020-09-30 2024-01-30 丰田自动车株式会社 Control device for vehicle
CN115214603A (en) * 2022-02-18 2022-10-21 广州汽车集团股份有限公司 Hybrid vehicle starting method, hybrid vehicle starting device, electronic apparatus, and storage medium
CN115214603B (en) * 2022-02-18 2023-09-19 广州汽车集团股份有限公司 Hybrid vehicle starting method and device, electronic equipment and storage medium

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Application publication date: 20110914