CN102678908A - Self-adaption matching method for automatic transmission idling breakaway torque - Google Patents
Self-adaption matching method for automatic transmission idling breakaway torque Download PDFInfo
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- CN102678908A CN102678908A CN2012101597805A CN201210159780A CN102678908A CN 102678908 A CN102678908 A CN 102678908A CN 2012101597805 A CN2012101597805 A CN 2012101597805A CN 201210159780 A CN201210159780 A CN 201210159780A CN 102678908 A CN102678908 A CN 102678908A
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Abstract
The invention discloses a self-adaption matching method for an automatic transmission idling breakaway torque. An output torque of a hydraulic torque converter is reduced by controlling a driving disc and a driven disc of a clutch so as to control an idling output torque of an engine. When the self-adaption matching method is used for calculating current of a solenoid valve for controlling clutch pressure, the influence of junction friction is considered, and a fuzzy control algorithm is introduced by referring to dynamic characteristics of different wet type clutches to control sliding friction of the clutch. The sliding friction speed is regulated by simulation and tests so as to realize optimal control.
Description
Technical field
The present invention relates to the control algorithm of vehicle control technique, be specially a kind of automatic transmission idling breakaway torque adaptive matching method of controlling the automatic transmission breakaway torque.
Background technique
The vehicle that carries automatic transmission is different from the vehicle of manual transmission; It has cancelled clutch pedal; Whole drive system is also different; The sketch that connects of motor and automatic transmission, as shown in Figure 1, the combination of wet clutch is that pressure by the controller of automatic transmission is regulated clutch through the electric current of control electromagnetic valve is realized with sliding rubbing; Fluid torque converter plays to slow down and increases the effect of turning round, and makes the output torque greater than input torque, and output torque and the change of input torque are turned round than being that load torque by the fluid torque converter output terminal is controlled; The idling output torque of motor is to be realized through load torque control fuel injection quantity by the controller of motor.
Automatic transmission is when the D shelves, because amplification is turned round in the change of fluid torque converter, can amplify the idling of motor output torque.If engine idle output torque is excessive, can make vehicle when braking or idling when going, driving force is excessive, thus the travelling comfort that influence is driven.
For motor, if load torque is excessive, motor will certainly increase fuel injection quantity in order to keep idling speed, improves the output torque.Therefore, if the change of torque converter is turned round than excessive, can make the motor oil spout strengthen, vehicle starting speed is excessive, and influences the fuel economy of vehicle, reduces the starting performance of vehicle.
Can improve these situation though design fluid torque converter again; But the cycle of developing fluid torque converter again grows up to this greatly, and the characteristic of different motors is different, and the fluid torque converter that matches is also inequality; Thereby development cost is increased, and the construction cycle increases.Given this; The invention provides a kind of autocontrol method of automatic transmission breakaway torque, through the cunning speed of rubbing of control wet clutch, the fluid torque converter of adaptive engine and automatic transmission matees; Thereby the idling output torque of control motor; Reduce the oil consumption of motor, promote the driving comfortability of vehicle, reduce development cost and construction cycle.
Summary of the invention
The technical problem that the present invention solved is to provide a kind of automatic transmission idling breakaway torque adaptive matching method, can effectively improve the vehicular automatic transmission performance, thereby improves the vehicle combination property on the whole, to solve the shortcoming in the above-mentioned background technology.
The technical problem that the present invention solved adopts following technological scheme to realize:
Automatic transmission idling breakaway torque adaptive matching method through the output torque that the cunning of solenoidoperated cluthes principal and subordinate moving plate is rubbed and reduced fluid torque converter, is exported torque thereby control engine idle, and its specific operation step is following:
1, read present engine rotating speed and output torque, the transformer turbine rotating speed and the speed of a motor vehicle, wherein fluid torque converter pump impeller rotating speed equals engine speed, and secondary speed equals the clutch driving disk rotating speed, and the speed of a motor vehicle can be converted into the clutch driven disk rotating speed;
2, calculate the rotating ratio of pump impeller and turbine, the speed discrepancy of clutch driving disk and driven plate, the torque that goes out clutch driving disk according to speed ratio calculation;
3, take all factors into consideration the Economy of vehicle, power character and driving comfortability adapt to different road conditions and operating mode, according to the torque and the speed of a motor vehicle of clutch driving disk, look into the table of clutch driving disk rotating speed of target;
4, look into the table of clutch driving disk rotating speed of target correction value according to the current speed of a motor vehicle and engine speed, the value addition that obtains with the 3rd step obtains the final goal rotating speed;
5, calculate the speed discrepancy of clutch driving disk rotating speed of target and actual speed;
6, according to the torque of clutch driving disk, the speed discrepancy of clutch driving disk and driven plate, and the speed discrepancy of clutch driving disk rotating speed of target and actual speed through fuzzy control, calculate clutch solenoid valve control electric current;
7, the controller output clutch electromagnetic valve electric current of automatic transmission; Make and produce certain pressure in the clutch cavity; Produce certain cunning between rotating plate and the driven plate and rub, thereby make the clutch driving disk actual speed, reduce the output torque of fluid torque converter near rotating speed of target; Reduce the idling output torque of motor, thereby realize target of the present invention.
When the control of carrying out engine idle output torque is clutch slipping control; The most key sliding relatively speed of rubbing of wanting solenoidoperated cluthes principal and subordinate moving plate optimum exactly; Be that optimum speed between clutch driving disk and the driven plate is poor, improving systematic function and reducing seeking balance point between the energy loss.
When calculating the rotating speed of target of clutch driving disk, taken all factors into consideration the operating mode and the road conditions of motor and vehicle, in conjunction with the Economy of car load, power character and travelling comfort make the cunning relatively of the clutch principal and subordinate moving plate speed optimum that rubs.When the electric current of the solenoid valve of compute control clutch pressure, consider to engage the sliding influence that rubs; With reference to the dynamic characteristic of different wet clutches, introduce FUZZY ALGORITHMS FOR CONTROL and come the solenoidoperated cluthes cunning to rub, and through emulation and test; Regulate sliding speed of rubbing, thereby realize optimal control.
Beneficial effect: the present invention is on the basis that does not change the automatic transmission original structure; Revised control strategy; Idling oil consumption in the time of can reducing vehicle start largely improves the travelling comfort of vehicle, and has significantly improved the Economy of vehicle; Simultaneously, the adaptivity and the robustness of system have effectively been strengthened.
Description of drawings
Fig. 1 is that motor of the present invention connects sketch with automatic transmission.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
Preferred embodiment referring to Fig. 1, automatic transmission idling breakaway torque adaptive matching method; In the present embodiment; Engine idle output torque is mainly determined by current fluid torque converter load torque; When resistance one timing of vehicle, then the output torque on the clutch driven disk has also just been confirmed.Do not rub if clutch is sliding, then the output torque of fluid torque converter just equals the output torque of clutch driven disk, is exactly the resistance of vehicle, turns round ratio according to the change of fluid torque converter, and the torque of pump impeller can be confirmed, and the torque of pump impeller equals the output torque of motor; If clutch slipping, then the output torque of fluid torque converter is not equal to the output torque of clutch driven disk, does not more slide when rubbing state little; Turn round ratio according to the change of fluid torque converter; Can confirm the torque of pump impeller, this torque is also less, because the idling of motor output torque equals the torque of pump impeller; Therefore, the idling of motor output torque is also less.
Before the design control strategy, need wet clutch is carried out cunning that theoretical calculation and lot of test the draw optimum velocity diagram that rubs.Idling according to current vehicle speed and motor during actual travel is exported torque; Table look-up and obtain the rotating speed of target of clutch driving disk; As the reference quantity in the strategy, then through the engine speed correction, through calculating the sliding relatively speed of rubbing of optimum clutch; Calculate the optimal current of control electromagnetic valve at last, and then the sliding speed of rubbing of control.
More than show and described basic principle of the present invention and major character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (1)
1. automatic transmission idling breakaway torque adaptive matching method is characterized in that, through the output torque that the cunning of solenoidoperated cluthes principal and subordinate moving plate is rubbed and reduced fluid torque converter, exports torque thereby control engine idle, and its specific operation step is following:
1. read present engine rotating speed and output torque, the transformer turbine rotating speed and the speed of a motor vehicle, wherein fluid torque converter pump impeller rotating speed equals engine speed, and secondary speed equals the clutch driving disk rotating speed, and the speed of a motor vehicle can be converted into the clutch driven disk rotating speed;
2. calculate the rotating ratio of pump impeller and turbine, the speed discrepancy of clutch driving disk and driven plate, the torque that goes out clutch driving disk according to speed ratio calculation;
3. take all factors into consideration the Economy of vehicle, power character and driving comfortability adapt to different road conditions and operating mode, according to the torque and the speed of a motor vehicle of clutch driving disk, look into the table of clutch driving disk rotating speed of target;
4. look into the table of clutch driving disk rotating speed of target correction value according to the current speed of a motor vehicle and engine speed, the value addition that obtains with the 3rd step obtains the final goal rotating speed;
5. calculate the speed discrepancy of clutch driving disk rotating speed of target and actual speed;
6. according to the torque of clutch driving disk, the speed discrepancy of clutch driving disk and driven plate, and the speed discrepancy of clutch driving disk rotating speed of target and actual speed through fuzzy control, calculate clutch solenoid valve control electric current;
The controller output clutch electromagnetic valve electric current of automatic transmission; Make and produce certain pressure in the clutch cavity; Produce certain cunning between rotating plate and the driven plate and rub, thereby make the clutch driving disk actual speed, reduce the output torque of fluid torque converter near rotating speed of target; Reduce the idling output torque of motor, thereby realize target of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210159780.5A CN102678908B (en) | 2012-05-22 | 2012-05-22 | Self-adaption matching method for automatic transmission idling breakaway torque |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210159780.5A CN102678908B (en) | 2012-05-22 | 2012-05-22 | Self-adaption matching method for automatic transmission idling breakaway torque |
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| CN102678908A true CN102678908A (en) | 2012-09-19 |
| CN102678908B CN102678908B (en) | 2014-12-24 |
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| CN201210159780.5A Expired - Fee Related CN102678908B (en) | 2012-05-22 | 2012-05-22 | Self-adaption matching method for automatic transmission idling breakaway torque |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316316A (en) * | 2014-08-19 | 2015-01-28 | 盛瑞传动股份有限公司 | Testing method and system of speed changer |
| CN107448575A (en) * | 2017-08-07 | 2017-12-08 | 盛瑞传动股份有限公司 | It is a kind of to prevent fluid torque-converter from the method for producing impact when being opened to sliding rub |
| CN108614424A (en) * | 2018-06-01 | 2018-10-02 | 湖南大学 | Contiuously variable transmission slip-based controller method and system based on BP neural network |
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| CN86100250A (en) * | 1985-01-31 | 1986-09-10 | 伊顿公司 | Improved automatic clutch control |
| JPH05141528A (en) * | 1991-11-18 | 1993-06-08 | Toyota Motor Corp | Slip controller of direct coupled clutch for vehicle |
| CN1165099A (en) * | 1996-02-02 | 1997-11-19 | 易通公司 | Method and apparatus for slip mode control of automatic clutch |
| JP2004044814A (en) * | 1989-04-17 | 2004-02-12 | Luk Lamellen & Kupplungsbau Beteiligungs Kg | Automated friction clutch controller |
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| CN101614254A (en) * | 2009-03-06 | 2009-12-30 | 上海汽车集团股份有限公司 | Little cunning in wet clutch locking when engagement controlling method of rubbing |
| CN102235494A (en) * | 2010-04-26 | 2011-11-09 | 加特可株式会社 | Lockup clutch control apparatus |
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2012
- 2012-05-22 CN CN201210159780.5A patent/CN102678908B/en not_active Expired - Fee Related
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| CN86100250A (en) * | 1985-01-31 | 1986-09-10 | 伊顿公司 | Improved automatic clutch control |
| JP2004044814A (en) * | 1989-04-17 | 2004-02-12 | Luk Lamellen & Kupplungsbau Beteiligungs Kg | Automated friction clutch controller |
| JPH05141528A (en) * | 1991-11-18 | 1993-06-08 | Toyota Motor Corp | Slip controller of direct coupled clutch for vehicle |
| CN1165099A (en) * | 1996-02-02 | 1997-11-19 | 易通公司 | Method and apparatus for slip mode control of automatic clutch |
| CN101230918A (en) * | 2007-01-25 | 2008-07-30 | 本田技研工业株式会社 | Control device for automatic transmission |
| CN101614254A (en) * | 2009-03-06 | 2009-12-30 | 上海汽车集团股份有限公司 | Little cunning in wet clutch locking when engagement controlling method of rubbing |
| CN102235494A (en) * | 2010-04-26 | 2011-11-09 | 加特可株式会社 | Lockup clutch control apparatus |
Non-Patent Citations (1)
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| 张飞铁，周云山，薛殿伦: "CVT起步离合器模糊控制算法研究", 《湖南大学学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104316316A (en) * | 2014-08-19 | 2015-01-28 | 盛瑞传动股份有限公司 | Testing method and system of speed changer |
| CN107448575A (en) * | 2017-08-07 | 2017-12-08 | 盛瑞传动股份有限公司 | It is a kind of to prevent fluid torque-converter from the method for producing impact when being opened to sliding rub |
| CN108614424A (en) * | 2018-06-01 | 2018-10-02 | 湖南大学 | Contiuously variable transmission slip-based controller method and system based on BP neural network |
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| CN102678908B (en) | 2014-12-24 |
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