CN101987571A - Method for controlling gear shift without power interruption of hybrid car - Google Patents
Method for controlling gear shift without power interruption of hybrid car Download PDFInfo
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- CN101987571A CN101987571A CN2009100673903A CN200910067390A CN101987571A CN 101987571 A CN101987571 A CN 101987571A CN 2009100673903 A CN2009100673903 A CN 2009100673903A CN 200910067390 A CN200910067390 A CN 200910067390A CN 101987571 A CN101987571 A CN 101987571A
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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Abstract
The invention relates to a method for controlling gear shift without power interruption of a hybrid car, which is characterized by comprising the following concrete control steps of a gear shift process, a transition process from pure motor driving to engine driving, a transition process from the engine driving to the pure motor driving; and an BSG motor is connected with a crank pulley of a motor, and a driven main motor is connected with an output shaft of a transmission. By means of a fast response characteristic of a motor system, output torque of the whole power transmission system is adjusted and compensated during the gear shift so as to realize the gear shift process without power interruption. In the method of the invention, the defect of power interruption during the gear shift of the traditional AMT system can be made up preferably, dynamic property of the whole car is improved, and smoothness of the whole car is enhanced.
Description
Technical field:
The present invention relates to a kind of hybrid power car power failure-free gear shift control method, belong to the electric automobile during traveling control technology, be mainly used in hybrid vehicle control field.
Background technology:
The hybrid power technology is to solve environment and the most practicable cleaning vehicle technology of energy problem present stage, becomes the research focus of current each big car company, domesticly also this technology has been carried out broad research.Because the automobile industry of China basis and the industrial structure are limit, the change-speed box of present domestic hybrid vehicle is how in the majority with hand-operated transmission and AMT.Though AMT also is a kind of of automatic transmission with hydraulic torque converter, its gear shift ride comfort problem and gear shift power interruption problem are still its fatal shortcoming.
Summary of the invention:
The object of the present invention is to provide a kind of hybrid power car power failure-free gear shift control method, it is a constructional feature of utilizing double-motor parallel-serial formula hybrid power car, main motor links to each other with transmission output shaft, like this in gearshift procedure, main motor still can be for car load provides propulsive effort, thereby avoids the power interruption of AMT gearshift procedure; Solve the problem of AMT gear shift ride comfort difference and gear shift power interruption, improve shift quality, improve the car load ride comfort.
Technical scheme of the present invention is achieved in that hybrid power car power failure-free gear shift control method, it is characterized in that: comprise gearshift procedure, pure electronic to engine drive transition, engine drive to pure electronic transition; Its concrete controlled step is:
(1) gearshift procedure: the BSG motor links to each other with engine crankshaft belt pulley by belt, and generating, start the engine are used; Main motor PM links to each other with the output shaft of AMT change-speed box, drives car load and uses; The AMT gearshift procedure is divided into: oil-break, cut-off clutch, select gear shift, engaging clutch, 5 stages of recovery fuel feeding;
(A) the oil-break stage: engine torque reduces gradually, and the BSG power generation torque also reduces thereupon, and main Motor torque increases gradually to car load provides power;
(B) the cut-off clutch stage: the BSG power generation torque at first is decreased to 0, and engine torque is decreased to 0 gradually subsequently, and this moment, cut-off clutch provided propulsive effort by main motor fully;
(C) select the gear shift stage: this moment, the AMT system selected the gear shift action, and the time probably is about 300ms, and provide propulsive effort by main motor this moment fully;
(D) the engaging clutch stage: this moment, engine torque was 0, and the BSG power generation torque also is 0, and provide propulsive effort by main motor this moment fully;
(E) recover the fuel feeding stage: engine torque increases gradually, and main Motor torque reduces gradually, and when engine torque increased to certain value, the BSG power generation torque recovered gradually;
Therefore, main motor is always car load in the whole AMT gearshift procedure provides propulsive effort, to guarantee power failure-free gear shift.
(2) engine drive is to pure electronic transient process, to the concrete controlled step of each dynamic assembly; Whole-control system order AMT system cut-off clutch, this moment, engine torque Te reduced, and main Motor torque Tpm increases, less to 0 the time as engine torque Te, the AMT cut-off clutch is when engine speed Ne＜1000rpm, the driving engine oil-break is realized pure motor driving;
(3) pure electronic to engine drive transition control, to the concrete controlled step of each dynamic assembly: whole-control system order BSG electric motor starting driving engine, when engine speed Ne＞1000rpm, order AMT system engages power-transfer clutch; Afterwards, recover engine torque Te, main Motor torque Tpm is decreased to 0 gradually, realizes that pure motor driving is to the engine drive transition.
Described whole control process is based on torque control, mainly is co-operative control engine torque, BSG Motor torque and main Motor torque.
The fast response characteristic of described electric system is finished the compensation that engine torque is responded by motor.
Technique effect of the present invention: (1) has solved AMT system gear shift power interruption problem, has improved AMT gear shift ride comfort, has improved shift quality; (2) speed of response of motor and response accuracy have remedied the deficiency of engine torque response, have improved the AMT shift quality.
Description of drawings:
Fig. 1 is a double-motor AMT series parallel hybrid power vehicle structural sketch of the present invention;
Fig. 2 is an AMT gear shift control flow sketch of the present invention;
Fig. 3 is that engine drive of the present invention is to pure electronic excessive control flow sketch;
Fig. 4 is of the present invention pure electronic to the excessive control flow sketch of engine drive;
Fig. 5 is each assembly state of a control of power failure-free gear shift of the present invention.
The specific embodiment:
Below in conjunction with accompanying drawing the present invention is described in further detail, the BSG motor links to each other with engine crankshaft belt pulley by belt as shown in Figure 1, and generating, start the engine are used; Main motor (PM) links to each other with the output shaft of AMT change-speed box, drives car load and uses.
(1) AMT gear shift control as shown in Figure 2
Te is an engine torque, and Tbsg is the BSG Motor torque, and Tpm is main Motor torque, and Tact is actual car load demand torque, and p is a constant coefficient.
Te-Tbsgp=Tact before the oil-break;
Te is decreased to Tact during oil-break, and Tbsg is decreased to 0 simultaneously, and this moment, Te continued to be decreased to 0, and Tpm increases to Tact gradually;
Select Tpm=Tact during the gear shift,, finish power failure-free gear shift for car load provides propulsive effort;
When engaging clutch recovered fuel feeding, Te increased gradually, and Tpm is decreased to 0 gradually, and when Te＞Tact, Tbsg recovers power generation torque gradually, and whole control process finishes.
(2) engine drive to pure electronic excessive control as shown in Figure 3
Whole-control system order AMT system cut-off clutch, this moment, Te reduced, Tpm increases, when Te less to 0 the time, the AMT cut-off clutch, when engine speed Ne＜1000rpm, the driving engine oil-break is realized pure motor driving.
It is (3) pure that electronic excessively control is as shown in Figure 4 to engine drive
Whole-control system order BSG electric motor starting driving engine, when engine speed Ne＞1000rpm, order AMT system engages power-transfer clutch; Afterwards, recover engine torque Te, Tpm is decreased to 0 gradually, realizes that pure motor driving is excessive to engine drive.
More than in each control process, reduce or engine torque is 0 o'clock at engine torque, main motor continues as car load propulsive effort is provided, and reaches power failure-free gear shift.
Claims (3)
1. hybrid power car power failure-free gear shift control method is characterized in that: comprise gearshift procedure, pure electronic to engine drive transition, engine drive to pure electronic transition; Its concrete controlled step is:
(1) gearshift procedure: the BSG motor links to each other with engine crankshaft belt pulley by belt, and generating, start the engine are used; Main motor PM links to each other with the output shaft of AMT change-speed box, drives car load and uses; The AMT gearshift procedure is divided into: oil-break, cut-off clutch, select gear shift, engaging clutch, 5 stages of recovery fuel feeding;
(A) the oil-break stage: engine torque reduces gradually, and the BSG power generation torque also reduces thereupon, and main Motor torque increases gradually to car load provides power;
(B) the cut-off clutch stage: the BSG power generation torque at first is decreased to 0, and engine torque is decreased to 0 gradually subsequently, and this moment, cut-off clutch provided propulsive effort by main motor fully;
(C) select the gear shift stage: this moment, the AMT system selected the gear shift action, and the time probably is about 300ms, and provide propulsive effort by main motor this moment fully;
(D) the engaging clutch stage: this moment, engine torque was 0, and the BSG power generation torque also is 0, and provide propulsive effort by main motor this moment fully;
(E) recover the fuel feeding stage: engine torque increases gradually, and main Motor torque reduces gradually, and when engine torque increased to certain value, the BSG power generation torque recovered gradually;
Therefore, main motor is always car load in the whole AMT gearshift procedure provides propulsive effort, to guarantee power failure-free gear shift.
(2) engine drive is to pure electronic transient process, to the concrete controlled step of each dynamic assembly; Whole-control system order AMT system cut-off clutch, this moment, engine torque Te reduced, and main Motor torque Tpm increases, less to 0 the time as engine torque Te, the AMT cut-off clutch is when engine speed Ne＜1000rpm, the driving engine oil-break is realized pure motor driving;
(3) pure electronic to engine drive transition control, to the concrete controlled step of each dynamic assembly: whole-control system order BSG electric motor starting driving engine, when engine speed Ne＞1000rpm, order AMT system engages power-transfer clutch; Afterwards, recover engine torque Te, main Motor torque Tpm is decreased to 0 gradually, realizes that pure motor driving is to the engine drive transition.
2. double-motor parallel-serial formula hybrid power car power failure-free gear shift control method according to claim 1, it is characterized in that described whole control process is based on torque control, mainly is co-operative control engine torque, BSG Motor torque and main Motor torque.
3. double-motor parallel-serial formula hybrid power car power failure-free gear shift control method according to claim 1 is characterized in that the fast response characteristic of described electric system, finishes compensation to the engine torque response by motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100673903A CN101987571A (en) | 2009-08-07 | 2009-08-07 | Method for controlling gear shift without power interruption of hybrid car |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100673903A CN101987571A (en) | 2009-08-07 | 2009-08-07 | Method for controlling gear shift without power interruption of hybrid car |
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| CN101987571A true CN101987571A (en) | 2011-03-23 |
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| CN2009100673903A Pending CN101987571A (en) | 2009-08-07 | 2009-08-07 | Method for controlling gear shift without power interruption of hybrid car |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616239A (en) * | 2012-04-11 | 2012-08-01 | 清华大学 | Dynamic coordinated control method for gear-shifting process of hybrid electrical vehicle |
| CN103342126A (en) * | 2013-07-12 | 2013-10-09 | 东风汽车公司 | Hybrid electric vehicle engine torque fluctuation compensation method |
| CN103381816A (en) * | 2012-05-04 | 2013-11-06 | 福特环球技术公司 | Method and system for improving gear shift of gear box |
| CN103448562A (en) * | 2012-10-07 | 2013-12-18 | 蔡磊 | Hybrid automatic mechanical transmission or manual transmission |
| CN107554276A (en) * | 2017-09-20 | 2018-01-09 | 湖南猎豹汽车股份有限公司 | A kind of plug-in hybrid speed changer and method for changing speed based on AMT |
| CN108357344A (en) * | 2018-02-09 | 2018-08-03 | 舍弗勒技术股份两合公司 | Hybrid power system and hybrid vehicle |
| CN109733407A (en) * | 2018-12-29 | 2019-05-10 | 汉腾汽车有限公司 | A kind of control method of mixed motor-car type AMT smooth gear shifting |
| CN111071238A (en) * | 2019-12-29 | 2020-04-28 | 吉泰车辆技术（苏州）有限公司 | Seamless downshift control method in hybrid system |
| CN111120644A (en) * | 2018-11-01 | 2020-05-08 | 郑州宇通客车股份有限公司 | Power-interruption-free gear shifting control method and system for hybrid vehicle |
| CN111251906A (en) * | 2020-01-22 | 2020-06-09 | 凯博易控车辆科技(苏州)股份有限公司 | Dual-motor driving system, gear shifting torque control method thereof and vehicle |
| CN111976712A (en) * | 2020-08-18 | 2020-11-24 | 东风汽车集团有限公司 | Multi-gear hybrid power system control method for improving power change impact |
-
2009
- 2009-08-07 CN CN2009100673903A patent/CN101987571A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102616239A (en) * | 2012-04-11 | 2012-08-01 | 清华大学 | Dynamic coordinated control method for gear-shifting process of hybrid electrical vehicle |
| CN102616239B (en) * | 2012-04-11 | 2014-03-19 | 清华大学 | Dynamic coordinated control method for gear-shifting process of hybrid electrical vehicle |
| CN103381816A (en) * | 2012-05-04 | 2013-11-06 | 福特环球技术公司 | Method and system for improving gear shift of gear box |
| CN103448562A (en) * | 2012-10-07 | 2013-12-18 | 蔡磊 | Hybrid automatic mechanical transmission or manual transmission |
| CN103342126A (en) * | 2013-07-12 | 2013-10-09 | 东风汽车公司 | Hybrid electric vehicle engine torque fluctuation compensation method |
| CN103342126B (en) * | 2013-07-12 | 2016-04-20 | 东风汽车公司 | The compensation method of hybrid electric vehicle engine torque ripple |
| CN107554276A (en) * | 2017-09-20 | 2018-01-09 | 湖南猎豹汽车股份有限公司 | A kind of plug-in hybrid speed changer and method for changing speed based on AMT |
| CN108357344A (en) * | 2018-02-09 | 2018-08-03 | 舍弗勒技术股份两合公司 | Hybrid power system and hybrid vehicle |
| CN111120644A (en) * | 2018-11-01 | 2020-05-08 | 郑州宇通客车股份有限公司 | Power-interruption-free gear shifting control method and system for hybrid vehicle |
| CN109733407A (en) * | 2018-12-29 | 2019-05-10 | 汉腾汽车有限公司 | A kind of control method of mixed motor-car type AMT smooth gear shifting |
| CN111071238A (en) * | 2019-12-29 | 2020-04-28 | 吉泰车辆技术（苏州）有限公司 | Seamless downshift control method in hybrid system |
| CN111071238B (en) * | 2019-12-29 | 2021-08-03 | 吉泰车辆技术（苏州）有限公司 | Seamless downshift control method in hybrid system |
| CN111251906A (en) * | 2020-01-22 | 2020-06-09 | 凯博易控车辆科技(苏州)股份有限公司 | Dual-motor driving system, gear shifting torque control method thereof and vehicle |
| CN111251906B (en) * | 2020-01-22 | 2021-05-14 | 凯博易控车辆科技(苏州)股份有限公司 | Dual-motor driving system, gear shifting torque control method thereof and vehicle |
| CN111976712A (en) * | 2020-08-18 | 2020-11-24 | 东风汽车集团有限公司 | Multi-gear hybrid power system control method for improving power change impact |
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Application publication date: 20110323 |