CN101602362A - A kind of method for distributing auxiliary driving torques of hybrid vehicle - Google Patents
A kind of method for distributing auxiliary driving torques of hybrid vehicle Download PDFInfo
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- CN101602362A CN101602362A CNA200910117030XA CN200910117030A CN101602362A CN 101602362 A CN101602362 A CN 101602362A CN A200910117030X A CNA200910117030X A CN A200910117030XA CN 200910117030 A CN200910117030 A CN 200910117030A CN 101602362 A CN101602362 A CN 101602362A
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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
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Abstract
The present invention relates to a kind of method for distributing auxiliary driving torques of hybrid vehicle, when hybrid vehicle sends the assistive drive request, the hybrid power control unit can be according to state such as the size of driving engine requested torque, the size of the speed of a motor vehicle and the SOC of electrokinetic cell of current vehicle, the control motor enters different mode of operations, makes engine operation in the economic zone to guarantee vehicle under the prerequisite that good dynamics, starting ride comfort are arranged.
Description
Technical field
The invention belongs to hybrid vehicle control field, relate to the allocation manager of hybrid power control unit, be specifically related to a kind of method for distributing auxiliary driving torques of hybrid vehicle motor assistive drive moment of torsion.
Background technology
Energy shock and ecological deterioration have become the key factor of restriction global evolution, and the automobile of research energy-saving and environmental protection is one of effective means of alleviating energy pressure, reduction environmental pollution.Hybrid vehicle has been taken into account the advantage of internal-combustion engines vehicle and pure electric automobile, has advantages such as low oil consumption, anti-emission carburetor, long travelled distance, is current practicable a kind of scheme.
Because parallel type hybrid dynamic has two propulsions source, driving engine and motor, hybrid controller (HCU) need be according to current motoring condition, carrying out mode of operation judges, send power and mode request to driving engine and motor respectively then, driving engine and motor control unit are controlled its propulsion source respectively to satisfy the demand of car load according to the order of HCU.And mostly general hybrid vehicle power control system is directly to judge power demand according to whole vehicle state in the prior art, and the direct controlling and driving motor is to satisfy the power request of car load, how to judge the torque request of car load fast and accurately, and whether the torque request value rationally is to influence hybrid vehicle performance key factor.Be to have following technical matters in the prior art: can't accurately judge the torque request of car load, and judge further whether value request is reasonable, thus the reasonable output torque of control motor.
Summary of the invention
The object of the present invention is to provide a kind of method, according to different chaufeur request operating modes, system makes rational arbitration, and the control machine operation is helping the pattern of vehicle needs, guarantees that vehicle has good starting, driving and economic performance.
When hybrid vehicle sends the assistive drive request, the hybrid power control unit can be according to state such as the size of driving engine requested torque, the size of the speed of a motor vehicle and the SOC of electrokinetic cell of current vehicle, the control motor enters different mode of operations, makes engine operation in the economic zone to guarantee vehicle under the prerequisite that good dynamics, starting ride comfort are arranged.
At first judge the type of drive of motor, obtain driving torque according to different type of drive by different methods of calculating then, be fit to the driving torque of travel condition of vehicle instantly to reach to obtain according to the running state of vehicle.
Concrete technical scheme is as follows:
A kind of method for distributing auxiliary driving torques of hybrid vehicle, adopt following steps:
(1) judges the mode of operation of motor according to travel condition of vehicle;
(2) obtain driving torque according to different mode of operations by different methods of calculating;
(3) output is fit to the driving torque of travel condition of vehicle instantly.
Travel condition of vehicle in the step (1) comprises: the total external characteristics of chaufeur requested torque Driver Dem and/or driving engine.
Travel condition of vehicle in the step (1) also comprises: the size of driving engine requested torque, and/or the size of the speed of a motor vehicle, and/or the SOC of electrokinetic cell.
Mode of operation in the step (2) comprises performance auxiliary mode MP_normal, assistive drive pattern MP_launch, efficient auxiliary mode ME.
Different moment of torsion outputs by under the different mode guarantee to make the work area of engine operation in economy under the dynamic property prerequisite of vehicle.
When chaufeur requested torque Driver Dem exceeds the maximum engine torque scope, then machine operation provides driving engine that the requested torque of part can't be provided under the MP_normal pattern.
When the state-of-charge SOC of electrokinetic cell higher, and/or, engine working point more than driving engine optimum efficiency curve e_line and the speed of a motor vehicle greater than V kph, then machine operation is adjusted to the operation point of driving engine near the e_line under the auxiliary ME pattern of efficient.
When the starting of vehicle low speed, then machine operation is under assistive drive pattern MP_launch.
Send request by the hybrid power control unit to motor control unit, make machine operation under each pattern.
Described motor is the ISG motor, and its condition that participates in assistive drive is: normal working of engine, and battery connects normal, and accelerator open degree is greater than a certain limit value, and power-transfer clutch does not disconnect and change-speed box is in forward gear.
When chaufeur requested torque Driver Dem greater than maximum engine torque and the complete combination of power-transfer clutch, trigger performance auxiliary mode MP_normal.
As chaufeur requested torque Driver Dem less than driving engine requested torque and the speed of a motor vehicle less than V kph, trigger assistive drive pattern MP_launch.
When chaufeur requested torque Driver Dem less than maximum engine torque, and the complete combination of power-transfer clutch, and battery SOC triggers efficient auxiliary mode ME greater than A% finishes when battery charge state SOC triggers efficient auxiliary mode ME during less than B%, wherein A＞B.
Compare with present prior art, the present invention has formulated the mode of operation of several motors according to different operating modes, under the dynamic property prerequisite that guarantees vehicle, makes the work area of engine operation in economy; Proposed a kind of rational moment of torsion arbitration mode, when engine speed is low, under the prerequisite that does not change engine speed, allowed motor that a part of moment of torsion is provided, the assurance vehicle is started to walk smoothly.
Description of drawings
Fig. 1 is mixed power system structure figure
Fig. 2: assistive drive torque distribution algorithm block diagram
Fig. 3: assistive drive moment of torsion algorithm block diagram
Among the figure:
1. driving engine, 2.ISG, 3. power-transfer clutch, 4. change-speed box, 5. wheel, 6. control unit of engine, 7. motor control unit, 8.CAN bus, 9. hybrid power control unit
The specific embodiment
Describe the present invention with reference to the accompanying drawings below, it is a kind of preferred embodiment in the numerous embodiments of the present invention.
With reference to Fig. 1-3, present embodiment is the assistive drive torque distribution mode of a kind of ISG (integrated starter generator) type hybrid vehicle, this allocation scheme is regulated by the moment of torsion that motor is sent, total external characteristics according to chaufeur requested torque (Driver Dem) and driving engine, when Driver Dem exceeds the maximum engine torque scope, the hybrid power control unit sends request to motor control unit, make machine operation under the MP_normal pattern, that a part of requested torque that provides driving engine not provide for automobile, thus the dynamic property of automobile improved.When the SOC of electrokinetic cell (state-of-charge) higher, engine working point is more than e_line (driving engine optimum efficiency curve) and the speed of a motor vehicle during greater than V kph, the hybrid power control unit sends request to motor control unit, make machine operation under ME (efficient is auxiliary) pattern, the operation point of driving engine is adjusted near the e_line, reduce oil consumption with this, emission abatement, the fuel economy of raising driving engine.
In addition, after the hybrid electric vehicle engine discharge capacity reduces, when not having the motor assistive drive driving engine the moment of torsion that can provide limited.During vehicle start, the ride comfort of starting, driving will be a greater impact, even driving engine has and suppresses dead possibility.The present invention has also comprised the assistive drive function of vehicle low speed starting, and promptly MP_launch guarantees that vehicle has good starting performance.
1) satisfy the precondition of ISG motor assistive drive:
Normal working of engine
Battery connects normal
Accelerator open degree is greater than a certain limit value
Power-transfer clutch does not disconnect
Change-speed box is in forward gear
2) performance is auxiliary
When Driver Dem greater than maximum engine torque and power-transfer clutch fully in conjunction with the time, trigger the MP_normal module.
When Driver Dem during less than V kph, triggers the MP_launch module less than driving engine requested torque and the speed of a motor vehicle.
3) the auxiliary ME of efficient
The ME radical function is the operation point of regulating driving engine, makes engine operation in more cost effective work area, improves efficiency of engine.When Driver Dem just can trigger the ME supplementary module in conjunction with, battery SOC during greater than A% fully less than maximum engine torque, power-transfer clutch, when battery SOC during less than B% the auxiliary ME of efficient finish (A＞B).
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as the various improvement of having adopted method design of the present invention and technical scheme to carry out; or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (13)
1, a kind of method for distributing auxiliary driving torques of hybrid vehicle is characterized in that, adopts following steps:
(1) judges the mode of operation of motor according to travel condition of vehicle;
(2) obtain driving torque according to different mode of operations by different methods of calculating;
(3) output is fit to the driving torque of travel condition of vehicle instantly.
2, the method for distributing auxiliary driving torques of hybrid vehicle as claimed in claim 1 is characterized in that, the travel condition of vehicle in the step (1) comprises: the total external characteristics of chaufeur requested torque Driver Dem and/or driving engine.
3, the method for distributing auxiliary driving torques of hybrid vehicle as claimed in claim 2 is characterized in that, the travel condition of vehicle in the step (1) also comprises: the size of driving engine requested torque, and/or the size of the speed of a motor vehicle, and/or the SOC of electrokinetic cell.
As the method for distributing auxiliary driving torques of each described hybrid vehicle among the claim 1-3, it is characterized in that 4, the mode of operation in the step (2) comprises performance auxiliary mode MP_normal, assistive drive pattern MP_launch, efficient auxiliary mode ME.
5, the method for distributing auxiliary driving torques of hybrid vehicle as claimed in claim 4 is characterized in that, the different moment of torsion outputs by under the different mode guarantee to make the work area of engine operation in economy under the dynamic property prerequisite of vehicle.
6, the method for distributing auxiliary driving torques of hybrid vehicle as claimed in claim 4, it is characterized in that, when chaufeur requested torque Driver Dem exceeds the maximum engine torque scope, then machine operation provides driving engine that the requested torque of part can't be provided under the MP_normal pattern.
7, the method for distributing auxiliary driving torques of hybrid vehicle as claimed in claim 4, it is characterized in that, when the state-of-charge SOC of electrokinetic cell higher, and/or, engine working point more than driving engine optimum efficiency curve e_line and the speed of a motor vehicle greater than V kph, then machine operation is under the auxiliary ME pattern of efficient, and the operation point of driving engine is adjusted near the e_line.
8, the method for distributing auxiliary driving torques of hybrid vehicle as claimed in claim 4 is characterized in that, when the starting of vehicle low speed, then machine operation is under assistive drive pattern MP_launch.
9, as the method for distributing auxiliary driving torques of each described hybrid vehicle among the claim 6-8, it is characterized in that, send request by the hybrid power control unit to motor control unit, the control machine operation is under each pattern.
10, as the method for distributing auxiliary driving torques of each described hybrid vehicle among the claim 1-3, it is characterized in that, described motor is the ISG motor, its condition that participates in assistive drive is: normal working of engine, battery connects normal, accelerator open degree is greater than a certain limit value, and power-transfer clutch does not disconnect and change-speed box is in forward gear.
11, the method for distributing auxiliary driving torques of hybrid vehicle as claimed in claim 10 is characterized in that, when chaufeur requested torque Driver Dem greater than maximum engine torque and the complete combination of power-transfer clutch, trigger performance auxiliary mode MP_normal.
12, the method for distributing auxiliary driving torques of hybrid vehicle as claimed in claim 10 is characterized in that, as chaufeur requested torque Driver Dem less than driving engine requested torque and the speed of a motor vehicle less than V kph, trigger assistive drive pattern MP_launch.
13, the method for distributing auxiliary driving torques of hybrid vehicle as claimed in claim 10, it is characterized in that, when chaufeur requested torque Driver Dem less than maximum engine torque, and the complete combination of power-transfer clutch, and battery charge state SOC is greater than A%, trigger efficient auxiliary mode ME, finish when battery charge state SOC triggers efficient auxiliary mode ME during less than B%, wherein A＞B.
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| CNA200910117030XA CN101602362A (en) | 2009-06-08 | 2009-06-08 | A kind of method for distributing auxiliary driving torques of hybrid vehicle |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823444A (en) * | 2010-05-06 | 2010-09-08 | 奇瑞汽车股份有限公司 | Method for controlling starting torque of electric vehicle |
| CN101941432A (en) * | 2010-09-25 | 2011-01-12 | 重庆长安汽车股份有限公司 | Method for controlling torsion of stepless variable-speed moderate hybrid vehicle |
| CN102390377A (en) * | 2011-09-28 | 2012-03-28 | 重庆长安汽车股份有限公司 | Torque coordination control method of hybrid electric vehicle engine and motor |
| CN103129412A (en) * | 2011-11-25 | 2013-06-05 | 福特全球技术公司 | Method and apparatus for controlling power transmission system in electric car |
| CN103465900A (en) * | 2012-06-05 | 2013-12-25 | 通用汽车环球科技运作有限责任公司 | Hybrid diesel-electric powertrain assembly and method for smoke limit avoidance |
| WO2014090101A1 (en) * | 2012-12-10 | 2014-06-19 | 上海汽车集团股份有限公司 | Torque distribution method for engine and motor of energy-efficient hybrid electric vehicle |
| CN107139916A (en) * | 2017-05-17 | 2017-09-08 | 中国第汽车股份有限公司 | Operator torque demands' analytic method for hybrid vehicle |
| US9776527B2 (en) | 2013-05-14 | 2017-10-03 | Ford Global Technologies, Llc | Powertrain for electric vehicles |
| CN107531234A (en) * | 2015-02-16 | 2018-01-02 | 标致雪铁龙汽车股份有限公司 | Control method and control device of the hybrid power means of transport prime mover as the supplement of internal combustion engine are used according to control from view of profit |
| CN108501936A (en) * | 2018-03-28 | 2018-09-07 | 吉利汽车研究院（宁波）有限公司 | Torque distribution method, device and the electronic equipment of automobile |
| CN110834621A (en) * | 2019-10-15 | 2020-02-25 | 中国第一汽车股份有限公司 | Torque distribution control method for light hybrid vehicle, storage medium and vehicle |
| CN110901627A (en) * | 2019-11-23 | 2020-03-24 | 中国人民解放军陆军装甲兵学院士官学校 | Hybrid power system of heavy equipment and control method |
| 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 |
| WO2021052023A1 (en) * | 2019-09-20 | 2021-03-25 | 长城汽车股份有限公司 | Method for controlling torque of engine and control apparatus |
| WO2021249556A1 (en) * | 2020-06-12 | 2021-12-16 | 长城汽车股份有限公司 | Method and apparatus for controlling interference torque, controller, device, program, and medium |
-
2009
- 2009-06-08 CN CNA200910117030XA patent/CN101602362A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823444A (en) * | 2010-05-06 | 2010-09-08 | 奇瑞汽车股份有限公司 | Method for controlling starting torque of electric vehicle |
| CN101941432A (en) * | 2010-09-25 | 2011-01-12 | 重庆长安汽车股份有限公司 | Method for controlling torsion of stepless variable-speed moderate hybrid vehicle |
| CN102390377A (en) * | 2011-09-28 | 2012-03-28 | 重庆长安汽车股份有限公司 | Torque coordination control method of hybrid electric vehicle engine and motor |
| CN103129412A (en) * | 2011-11-25 | 2013-06-05 | 福特全球技术公司 | Method and apparatus for controlling power transmission system in electric car |
| CN103129412B (en) * | 2011-11-25 | 2016-09-07 | 福特全球技术公司 | For the method and apparatus controlling the power drive system in electric vehicle |
| CN103465900A (en) * | 2012-06-05 | 2013-12-25 | 通用汽车环球科技运作有限责任公司 | Hybrid diesel-electric powertrain assembly and method for smoke limit avoidance |
| WO2014090101A1 (en) * | 2012-12-10 | 2014-06-19 | 上海汽车集团股份有限公司 | Torque distribution method for engine and motor of energy-efficient hybrid electric vehicle |
| US9637110B2 (en) | 2012-12-10 | 2017-05-02 | Saic Motor Corporation, Ltd. | Torque distribution method for engine and motor of energy-efficient hybrid electric vehicle |
| US9776527B2 (en) | 2013-05-14 | 2017-10-03 | Ford Global Technologies, Llc | Powertrain for electric vehicles |
| CN107531234A (en) * | 2015-02-16 | 2018-01-02 | 标致雪铁龙汽车股份有限公司 | Control method and control device of the hybrid power means of transport prime mover as the supplement of internal combustion engine are used according to control from view of profit |
| CN107531234B (en) * | 2015-02-16 | 2020-11-27 | 标致雪铁龙汽车股份有限公司 | Control method and control device for controlling the use of a hybrid vehicle prime mover as a supplement to an internal combustion engine as a function of efficiency |
| CN107139916A (en) * | 2017-05-17 | 2017-09-08 | 中国第汽车股份有限公司 | Operator torque demands' analytic method for hybrid vehicle |
| CN107139916B (en) * | 2017-05-17 | 2019-09-24 | 中国第一汽车股份有限公司 | Operator torque demands' analytic method for hybrid vehicle |
| CN108501936A (en) * | 2018-03-28 | 2018-09-07 | 吉利汽车研究院（宁波）有限公司 | Torque distribution method, device and the electronic equipment of automobile |
| WO2021052023A1 (en) * | 2019-09-20 | 2021-03-25 | 长城汽车股份有限公司 | Method for controlling torque of engine and control apparatus |
| CN110834621A (en) * | 2019-10-15 | 2020-02-25 | 中国第一汽车股份有限公司 | Torque distribution control method for light hybrid vehicle, storage medium and vehicle |
| CN110901627A (en) * | 2019-11-23 | 2020-03-24 | 中国人民解放军陆军装甲兵学院士官学校 | Hybrid power system of heavy equipment and control method |
| 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 |
| WO2021249556A1 (en) * | 2020-06-12 | 2021-12-16 | 长城汽车股份有限公司 | Method and apparatus for controlling interference torque, controller, device, program, and medium |
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Application publication date: 20091216 |