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Two-wheel drive and four-wheel drive switching method of automobile

A conversion method and automotive technology, applied in vehicle components, control devices, transportation and packaging, etc., can solve the problems of complex electronic control process and poor work reliability, and achieve simple and convenient control, high work reliability, and guaranteed reliability. Effect

Inactive Publication Date: 2016-09-21
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, when the two-wheel drive and four-wheel drive switching control is carried out through the transfer case, two methods of mechanical control and electronic control of the joystick are mainly used. Among them, the electronic control process is relatively complicated and the work reliability is poor.

Method used

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  • Two-wheel drive and four-wheel drive switching method of automobile
  • Two-wheel drive and four-wheel drive switching method of automobile

Examples

Experimental program
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Embodiment Construction

[0022] Such as figure 2 As shown, the engine control unit ECU of the present invention controls the on-off of the first relay U1 and the second relay U2 respectively through the output pins J1-10 and J1-12, thereby controlling the drive motor M of the transfer box to work in the forward rotation state or in the reverse rotation state. turn state, and then control the transfer case to switch between two-wheel drive and four-wheel drive. When switching to the four-wheel drive state, the engine control unit ECU controls the first relay U1 to pull in, so that the transfer drive motor M works in the forward rotation state, and the transfer case switches the car to the four-wheel drive state; when switching to the two-wheel drive state, The engine control unit ECU controls the second relay U2 to pull in, so that the drive motor M of the transfer case works in the reverse state, and the transfer case switches the vehicle to the second drive state.

[0023] There is a selector switc...

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PUM

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Abstract

The invention relates to a two-wheel drive and four-wheel drive switching method of an automobile. Two-wheel drive and four-wheel drive are switched through a transfer gear. The two-wheel drive and four-wheel drive switching method of the automobile is characterized in that when the automobile is switched to be in a four-wheel drive state, an engine control unit (ECU) controls the pick-up of a first relay so as to enable the transfer gear to drive a motor to work in a forward rotating state, and the transfer gear switches the automobile to be in the four-wheel drive state; and when the automobile is switched to be in a two-wheel drive state, the ECU controls the pick-up of a second relay so as to enable the transfer gear to drive the motor to work in a reverse rotating state, and the transfer gear switches the automobile to be in the two-wheel drive state.

Description

technical field [0001] The invention relates to a conversion method of two-wheel drive and four-drive vehicle. Background technique [0002] Part-time four-wheel drive (PART-TIME 4WD) is a form of four-wheel drive vehicle drive system, which means that the driver can switch between two-wheel drive and four-wheel drive by turning on or off the transfer box according to the road conditions. Drive mode, which is also the most common drive mode for off-road vehicles or four-wheel drive SUVs. In the prior art, when the two-wheel drive and four-wheel drive switching control is performed through the transfer case, two modes of mechanical control and electronic control of the joystick are mainly used, and the electronic control process is relatively complicated and the work reliability is relatively poor. Contents of the invention [0003] The object of the present invention is to provide a method for switching between two-wheel drive and four-wheel drive, which is more convenien...

Claims

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Application Information

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IPC IPC(8): B60K17/344B60K17/12
CPCB60K17/344B60K17/12
Inventor 项南军李康
Owner CHERY AUTOMOBILE CO LTD