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Method for distributing auxiliary driving torques of hybrid vehicle

A hybrid vehicle and auxiliary drive technology, applied in hybrid vehicles, motor vehicles, transportation and packaging, etc., can solve the problem of inability to accurately judge the torque request of the whole vehicle

Inactive Publication Date: 2009-12-16
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, there are the following technical problems in the prior art: it is impossible to accurately judge the torque request of the whole vehicle, and further judge whether the request value is reasonable, so as to control the reasonable output torque of the motor

Method used

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  • Method for distributing auxiliary driving torques of hybrid vehicle
  • Method for distributing auxiliary driving torques of hybrid vehicle
  • Method for distributing auxiliary driving torques of hybrid vehicle

Examples

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Embodiment Construction

[0030] The present invention will be described in detail below according to the accompanying drawings, which is a preferred embodiment among various implementations of the present invention.

[0031] refer to Figure 1-3 , this embodiment is an ISG (integrated starter generator) type hybrid vehicle auxiliary drive torque distribution method, the distribution method is by adjusting the torque sent by the motor, according to the driver request torque (Driver Dem) and the external characteristics of the engine , when the Driver Dem exceeds the maximum torque range of the engine, the hybrid control unit sends a request to the motor control unit to make the motor work in MP_normal mode, and provide the car with the part of the requested torque that the engine cannot provide, thereby improving the power of the car. When the SOC (state of charge) of the power battery is high, the engine operating point is above the e_line (engine optimal efficiency curve) and the vehicle speed is gre...

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Abstract

The invention relates to a method for distributing auxiliary driving torques of a hybrid vehicle, wherein when the hybrid vehicle sends an auxiliary drive request, a hybrid control unit controls a motor to enter different working modes according to the current vehicle states such as the engine request torque, the vehicle speed and the SOC of a power battery so as to ensure that an engine works in an economic area on the premise that the vehicle has good dynamic property and starting smoothness.

Description

technical field [0001] The invention belongs to the field of hybrid electric vehicle control, and relates to the distribution and management of the auxiliary drive torque of a motor by a hybrid electric control unit, in particular to a method for allocating the auxiliary drive torque of a hybrid electric vehicle. Background technique [0002] Energy crisis and environmental deterioration have become important factors restricting global development. Research on energy-saving and environmentally friendly vehicles is one of the effective means to alleviate energy pressure and reduce environmental pollution. Hybrid electric vehicles take into account the advantages of both internal combustion engine vehicles and pure electric vehicles, and have the advantages of low fuel consumption, low emissions, and long mileage, and are currently a feasible solution. [0003] Since the parallel hybrid has two power sources, the engine and the motor, the hybrid controller (HCU) needs to deter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W10/06B60W10/08B60W10/26B60W10/02B60W20/00B60W20/10
CPCY02T10/6286Y02T10/62
Inventor 马玉岩
Owner CHERY AUTOMOBILE CO LTD
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