Hybrid vehicle control method and device

A technology for a hybrid vehicle and a control method, which is applied to hybrid vehicles, control devices, motor vehicles, etc., can solve problems such as setbacks, vehicle instability, and impact on driving experience, and achieves the improvement of comfort, vehicle stability, and smooth driving. Effect

Active Publication Date: 2019-11-26
SAIC MOTOR
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing creeping driving process, there are phenomena such as vehicle instability and setbacks, which affect the driving experience

Method used

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  • Hybrid vehicle control method and device
  • Hybrid vehicle control method and device

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Embodiment Construction

[0032] During creeping driving of a vehicle, especially on relatively congested roads, the creeping speed often changes, thus causing the total torque demand of the creeping speed to change accordingly. In the prior art, the method of distributing the total torque demand of the vehicle to the creeping speed to each power source may easily cause the vehicle to be unstable and stumble.

[0033] In the embodiment of the present invention, the total torque demand of the preset creeping vehicle speed is calculated, and the obtained total torque demand of the preset creeping vehicle speed is filtered, and the high-frequency torque demand and the low-frequency torque demand are respectively obtained, and the high-frequency A torque request is assigned to the drive motor, and the low frequency torque request is assigned to the engine. The engine responds to the torque demand by adjusting the oil circuit or steam circuit. It responds slowly to the torque demand, and distributes the low...

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Abstract

Disclosed are a hybrid electric vehicle control method and device. The method comprises the steps of calculating a demanded total torque of a preset creeping speed; filtering the demanded total torqueto obtain a demanded high-frequency torque and a demanded low-frequency torque separately; distributing the demanded high-frequency torque to a driving motor, and distributing the demanded low-frequency torque to an engine. By means of the scheme, the smoothness of creeping running of a vehicle can be improved.

Description

technical field [0001] The present invention relates to the technical field of vehicle control, in particular to a hybrid vehicle control method and device. Background technique [0002] Hybrid Vehicle (Hybrid Vehicle) refers to a vehicle whose drive system is composed of multiple single drive systems that can operate simultaneously. The so-called hybrid vehicle generally refers to a hybrid electric vehicle (Hybrid Electric Vehicle, HEV), that is, a traditional internal combustion engine and an electric motor are used as power sources. [0003] Creeping driving refers to the driving mode of the vehicle at a relatively low speed, which is mainly used in situations where the road is relatively congested or the vehicle is climbing a hill at a slow speed. In the existing creeping driving process, there are phenomena such as vehicle instability and frustration, which affect the driving experience. Contents of the invention [0004] The technical problem solved by the inventio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W10/06B60W10/08B60W20/10B60W40/00B60W30/02B60W40/076
CPCB60W10/06B60W10/08B60W20/10B60W30/025B60W40/00B60W40/076B60W50/0098B60W2050/0043B60W2510/0291B60W2510/244B60W2552/15B60W2710/0666B60W2710/083Y02T10/62
Inventor 孙俊冷宏祥张霏霏刘帅王伦珍
Owner SAIC MOTOR
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