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Electric and electric control combined hydraulic power steering system

A hydraulic power steering and hydraulic power assist technology, which is applied in the direction of electric steering mechanism, power steering mechanism, steering mechanism, etc., can solve the problems of increasing fatigue and reducing steering comfort, and achieve the effect of improving energy saving effect

Active Publication Date: 2018-10-09
ZHENGZHOU YUTONG BUS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an electric and electronically controlled two-in-one hydraulic power steering system, which is used to solve the problem of increased fatigue and reduced steering comfort when the electronic control device fails in the existing electronically controlled hydraulic power steering system The problem

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  • Electric and electric control combined hydraulic power steering system
  • Electric and electric control combined hydraulic power steering system
  • Electric and electric control combined hydraulic power steering system

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Embodiment Construction

[0029] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0030] Generally speaking, in the traditional hydraulic power steering system, the present invention is equipped with a steering angle speed sensor on the steering column, and the steering control unit ECU adjusts the strength of the steering assist according to the speed of the vehicle. According to the magnitude of the applied steering force, the driver obtains natural Steering "road feeling" and good steering comfort; at the same time, the steering oil pump driven by the engine is replaced with the steering oil pump driven by the steering motor, and the control function of the steering control unit ECU is expanded to form a new electric and electronically controlled hydraulic power steering system.

[0031] The electric and electroni...

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Abstract

The invention provides an electric and electric control combined hydraulic power steering system. The electric and electric control combined hydraulic power steering system comprises a steering control unit, a hydraulic power pipeline and a steering oil pump which is arranged on the hydraulic power pipeline; an electromagnetic valve is also arranged on the hydraulic power pipeline; a steering motor drives the steering oil pump; the steering control unit is connected with the electromagnetic valve and the steering motor; and the steering control unit is used for controlling the steering motor to drive the steering oil pump when the electromagnetic valve is invalid. Under normal circumstances, the electric and electric control combined hydraulic power steering system works in an electric control mode; and if the electric control mode is invalid, the electric control mode is switched into an electric mode. According to the electric and electric control combined hydraulic power steering system, the problems that the fatigue level during rapid steering is increased and the steering comfort is reduced under a situation that the existing electric control hydraulic power steering system isswitched into a common hydraulic power steering system when an electric control device is invalid are effectively solved; and meanwhile, the problem that an electric hydraulic power steering system cannot often work within a rotation speed range corresponding to high efficiency is solved.

Description

Technical field [0001] The invention belongs to the technical field of automobile steering, and specifically relates to an electric and electronic control two-in-one hydraulic power steering system. Background technique [0002] The hydraulic power steering system uses the engine to drive the steering oil pump to provide the power source, converts the mechanical energy of the engine rotation into the hydraulic energy of the steering fluid, and provides steering assistance through the power steering device, reducing the steering force exerted by the car driver on the steering wheel. [0003] The electronically controlled hydraulic power steering system can be divided into three types: reaction control type, flow control type and valve gain control type according to different control methods. [0004] For the counter-force control electronically controlled hydraulic power steering system, on the basis of the existing hydraulic power steering system, an electronically controlled hydraul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B62D5/06
CPCB62D5/046B62D5/0481B62D5/06
Inventor 闫帅林
Owner ZHENGZHOU YUTONG BUS CO LTD
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