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Double power source drive vehicle torque distribution method

A technology of torque distribution and dual power sources, which is applied in the direction of electric vehicles, control drives, vehicle components, etc., can solve problems such as not considering the influence of vehicle torque distribution, to improve operational stability, assist in/out of corners, improve Effect of Steering Characteristics

Active Publication Date: 2019-05-14
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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  • Double power source drive vehicle torque distribution method

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Embodiment 1

[0047] The present invention provides a dual power source driven vehicle torque distribution method, comprising the following steps:

[0048] S10, judging the activation condition of the torque distribution;

[0049]In this embodiment, when the activation condition of torque distribution is satisfied, the torque distribution function is activated, and then the output torque of the power source of the front and rear axles of the vehicle is adjusted; when the activation condition of torque distribution is not satisfied, the torque distribution function is not activated, and the vehicle is always According to the output torque under normal driving conditions. On the other hand, if any activation condition is not satisfied after entering the torque distribution function, the torque distribution function will exit immediately, and the output torque of the power source of the front and rear axles will gradually transition from the initial value at the moment of exit to that under no...

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PUM

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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 vehicle driven by dual power sources. Background technique [0002] Against the backdrop 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 drive vehicles, most of the inter-axle torque distribution of the vehicle only considers the longitudinal characteristics of the vehicle, that is, the inter-axle torque is distributed based on the vehicle efficiency and driving performance, without considering the vehicle axle. The effect of the torque distribution between the two on the lateral stability. Patent 1 (CN107097686A) and Patent 2 (CN106379197A) are mainly based on motor efficiency and longitudinal drive performance to allocate the required torque of the front and rea...

Claims

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Application Information

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Patent Type & Authority Applications(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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