A torque distribution method for a vehicle driven by dual power sources

A torque distribution, dual power source technology, applied in the control of drive, vehicle components, electric vehicles, etc., can solve the problem of not considering the impact of the torque distribution of the whole vehicle, to improve the operation stability, assist entry/exit, improve Effect of In/Out Bend Feature

Active Publication Date: 2020-05-22
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Patent 1 and Patent 2 only considered the torque distribution caused by the longitudinal movement of the vehicle, and did not consider the influence of the lateral movement of the vehicle on torque distribution.
Most existing patents on vehicle lateral dynamics such as patent 3 (CN104773169A) and patent 4 (CN105172790A) mainly realize direct yaw moment control by controlling the braking force on the four wheels. There are few patents on torque distribution between front and rear dual power source vehicles to improve vehicle stability

Method used

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  • A torque distribution method for a vehicle driven by dual power sources
  • A torque distribution method for a vehicle driven by dual power sources
  • A torque distribution method for a vehicle driven by dual power sources

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Embodiment 1

[0047] The present invention provides a torque distribution method for a dual power source driving vehicle, which includes the following steps:

[0048] S10. Judge the activation conditions of torque distribution;

[0049] In this embodiment, when the activation conditions for torque distribution are met, the torque distribution function is activated to adjust the output torque of the vehicle's front and rear axle power sources; when the activation conditions for torque distribution are not met, the torque distribution function is not activated and the vehicle always According to the output torque under normal driving conditions. On the other hand, if any activation condition is not met after entering the torque distribution function, the torque distribution function will exit immediately. At this time, the output torque of the front and rear axle power sources will gradually transition from the torque at the moment of exit to the initial value under normal driving conditions. Out...

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Abstract

The invention discloses a double power source drive vehicle torque distribution method. An output torque of front and rear power sources can be adjusted in real time according to the steering characteristics of a vehicle, under the condition of not changing an original power system structure and not increasing the cost, by optimizing inter-axle drive torque distribution coefficients, the steeringcharacteristics of the vehicle are improved, and the operating stability of the vehicle is improved; under the condition of without increasing extra sensors, maximal accelerated speed information of the vehicle is automatically learned, and thus, a road adhesion coefficient is obtained; and the accelerating in / out bending working condition of a driver further can be automatically identified, by adjusting the output torque of the drive sources of the front and rear axles, the in / out bending characteristics of the vehicle is improved, and in / out bending of the driver is assisted.

Description

Technical field [0001] The invention relates to the technical field of automobile electronic control, in particular to a torque distribution method for a dual-power source driving vehicle. Background technique [0002] In the context of increasingly severe global energy and environmental issues, dual-power source-driven vehicles are developing faster and faster. Compared with traditional cars, in the current mass-produced dual-power source-driven vehicles, most of the torque distribution between the vehicle axles only considers the longitudinal characteristics of the vehicle, that is, the torque distribution between the axles is based on the efficiency and driving performance of the vehicle, and the axles of the vehicle are not considered. The influence of torque distribution on lateral stability. Patent 1 (CN107097686A) and Patent 2 (CN106379197A) are mainly based on the motor efficiency and longitudinal drive performance to distribute the required torque of the front and rear ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/02B60W30/045B60W30/18B60W40/10B60W40/105B60L15/38
Inventor 吴爱彬李超赵永强
Owner CHINA FIRST AUTOMOBILE
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