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Torque control method and device for vehicle

A technology of torque control and control method, which is applied in the field of vehicles and can solve problems such as jitter

Active Publication Date: 2021-02-05
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose a torque control method for a vehicle to solve the technical problem that the vehicle shakes during the energy recovery process

Method used

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  • Torque control method and device for vehicle
  • Torque control method and device for vehicle
  • Torque control method and device for vehicle

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Embodiment Construction

[0031] It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0032] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0033] figure 1 A schematic flowchart of a torque control method for a vehicle according to an embodiment of the present invention is shown. Such as figure 1 As shown, the embodiment of the present invention provides a torque control method for a vehicle, and the method can be executed by a vehicle controller of a hybrid vehicle or a pure electric vehicle. The torque control method for a vehicle may include steps S110 to S160.

[0034] In step S110, in the process of performing the energy recovery function, it is determined whether a lift torque request is received.

[0035] When a hybrid vehicle or a pure electric vehicle is braking or coasting, in order to increase the cruisi...

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Abstract

The invention relates to the technical field of vehicles, and provides a torque control method and device for a vehicle. The method comprises the steps: judging whether a lifting torque request is received or not in a process of executing an energy recovery function; judging whether the ABS is in an activated state or not under the condition that the lifting torque request is not received; if so,reducing the energy recovery torque according to a first torque change gradient; during the period of reducing the energy recovery torque, judging whether the ABS is changed from the activated state to the non-activated state or not; if so, judging whether the torque required by a first current driver is greater than a first preset value and whether the ABS is in the non-activated state for more than first preset time or not; and if so, recovering the energy recovery torque to the first current driver required torque according to a second torque change gradient. According to the invention, a vehicle frequent moving phenomenon caused by frequent activation of the ABS can be avoided, and the comfort of the vehicle is improved.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a torque control method and device for vehicles. Background technique [0002] At present, for hybrid or pure electric vehicles, for the chassis control system including the ESP (Electronic Stability Program, Electronic Stability Program) system, the processing strategy is that the chassis control system is the main control unit, and the vehicle power system fully responds to the chassis torque request. However, this processing strategy only considers the safety performance of the vehicle, and seldom considers the comfort performance of the vehicle. [0003] Specifically, hybrid or pure electric vehicles will activate the energy recovery function under braking and coasting conditions. During the energy recovery process, the wheels may be locked, and the ABS (antilock brake system, anti-lock braking system) is activated. Especially when driving on low-adhesion roads, the wheels ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W10/08B60W50/00B60L15/20
CPCB60W10/06B60W10/08B60W50/00B60L15/20B60W2050/0043B60W2710/0666B60W2710/083B60L2240/423Y02T10/72B60L7/18B60L7/26B60L15/2009B60W10/184B60W30/18127B60W2710/085B60T8/176B60T2270/602B60W20/14B60W30/02B60W30/18172B60W2540/10B60W2510/083B60W20/40F16H2061/0433
Inventor 王银磊吴迪刘寒刘秀邓伟峰侯文涛王宝刚
Owner GREAT WALL MOTOR CO LTD
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