Sliding working condition torque control method

A technology of torque control and working conditions, applied in transmission control, components with teeth, belts/chains/gears, etc., can solve the problems of vehicle shock, stumbling, torque sudden change, etc., and achieve the effect of avoiding shock or stumbling

Active Publication Date: 2019-02-12
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

If the torque at the flywheel end of the engine in the coasting state is quite different from the expected torque after the driving intention is changed, the torque mutation is obvious, which will cause the entire vehicle to shock or stumble

Method used

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  • Sliding working condition torque control method

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Embodiment Construction

[0034] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0035] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0036] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0037] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses a sliding working condition torque control method. The sliding working condition torque control method comprises the following steps of judging whether a whole vehicle is in asliding working condition or not; if the whole vehicle is in a sliding condition, TCU sends a torque raising request signal and a preset torque request value to ECU; after receiving the torque raisingrequest signal and the preset torque request value from the TCU, the ECU controls the torque of the flywheel end of an engine to be raised to the preset torque request value; judging whether a driving intention is changed or not; if the driving intention is changed, the TCU sends a torque raising request signal and a desired torque request value to the ECU according to a torque desired by a driver; and the ECU controls the torque of the flywheel end of the engine to the desired torque request value according to the desired torque request value. By means of the sliding working condition torquecontrol method, because the torque of the engine in the sliding working condition is adjusted to the preset torque request value, when the driving intention is changed, the torque of the flywheel endof the engine is not changed greatly or rapidly, and impacts or setback can be effectively avoided.

Description

technical field [0001] The invention relates to the field of torque control of dual-clutch automatic transmission vehicles, and more particularly relates to a torque control method in slipping conditions. Background technique [0002] A typical dual clutch automatic transmission is mainly composed of an oil pump, a wet dual clutch, an electronic control system, a hydraulic system, and gears. The dual-clutch automatic transmission establishes the pressure of the main oil circuit through the rotation of the oil pump, and then the electronic control system judges the current working status of the vehicle and the transmission, thereby controlling the solenoid valves related to gear control and clutch control in the hydraulic system to realize Gear selection and clutch separation and combination of gearbox. In this process, the electronic control unit (TCU) of the dual-clutch automatic transmission and the electronic control unit (ECU) of the engine are coordinated and controlle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/04
CPCF16H61/04
Inventor 王烨张友皇徐瑞雪陈加超朱成马培义王祺明
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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