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Start control method and device and automobile

A control method and technology for a control device, which are applied to control devices, electric vehicles, control drives, etc., can solve problems such as improper control of motor output torque, poor ride comfort, and start jitter, and achieve the effect of ensuring comfort.

Active Publication Date: 2018-09-07
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a start control method, device and vehicle to solve the problems of improper control of motor output torque, start jitter, and poor ride comfort when a pure electric vehicle starts

Method used

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  • Start control method and device and automobile
  • Start control method and device and automobile
  • Start control method and device and automobile

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Embodiment Construction

[0041] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] The invention aims at the problems of improper control of motor output torque, starting vibration and poor riding comfort when a pure electric vehicle starts, and provides a starting control method, device and vehicle.

[0043] Such as figure 1 As shown, the embodiment of the present invention provides a starting control method, including:

[0044] Step 11, judging whether the vehicle is in the starting control state;

[0045] Specifically, the specific implementation of step 11 is: judging whether the brake pedal is depressed and acquiring the vehicle speed; if the brake pedal is depressed and the vehicle speed is less than or equal to the first preset value, then judging that the vehicle is in launch control state; otherwise, the vehicle ...

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Abstract

The invention provides a start control method and device and an automobile and relates to the technical field of complete vehicle control. The start control method comprises the steps of judging whether the automobile is in a start control state or not; if the vehicle is in the start control state, obtaining braking force state information; obtaining start control torque according to the braking force state information; and controlling the start of the automobile according to the start control torque. According to the scheme, by using the braking force state information to obtain the start control torque and using the start control torque to control the start of the vehicle when the automobile is in the start control state, the defect of engaging clearance between gears in the automobile start stage can be overcome, and the problem of automobile start shaking caused by improper output torque of the automobile can be avoided; and therefore, the automobile start comfort is guaranteed.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a start control method, device and vehicle. Background technique [0002] With the development of science and technology, automobiles have become an indispensable means of transportation in people's daily life; as fuel is a non-renewable resource, in order to reduce the consumption of fuel, more and more automobile manufacturers are gradually devoting themselves to the research of pure electric vehicles and Production. [0003] When a pure electric vehicle starts, the torque output by the motor first needs to overcome the meshing distance between the gears, including: the spline meshing between the motor output shaft and the reducer input shaft, the gear meshing between the reducer and the vehicle half shaft, etc.; When starting, the output torque of the motor cannot be well controlled, resulting in vehicle starting vibration and poor ride comfort. Contents of the inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/423Y02T10/72
Inventor 王艳静易迪华谢明维
Owner BEIJING ELECTRIC VEHICLE
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