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Automobile hydraulic power-driven assisted steering system

An electric power steering and hydraulic technology, applied in the direction of the fluid steering mechanism, etc., can solve the problems of inconvenient use and large changes, and achieve the effects of noise reduction, good low-speed return ability, and stable steering.

Active Publication Date: 2014-05-14
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an automobile hydraulic electric power steering system to solve the problems of the existing automobile hydraulic electric power steering system that the existing steering system has been greatly modified and inconvenient to use

Method used

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  • Automobile hydraulic power-driven assisted steering system
  • Automobile hydraulic power-driven assisted steering system

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Embodiment Construction

[0016] Such as figure 1 Shown is a schematic structural diagram of an embodiment of an automotive hydraulic electric power steering system of the present invention. It can be seen from the figure that the system includes a hydraulic pump and a motor driving the hydraulic pump. The oil inlet of the hydraulic pump is connected to the oil storage tank, and the hydraulic pump The oil outlet is connected to the accumulator through a one-way valve, the accumulator is connected to the power steering cylinder, and the power steering cylinder is connected to the oil storage tank.

[0017] The electric motor is connected to the hydraulic pump. The hydraulic pump takes the low-pressure oil from the oil storage tank and connects to the accumulator through the high-pressure oil circuit. The accumulator stores the high-pressure oil from the hydraulic pump and outputs it to the power steering cylinder during steering operation. Middle; The power steering cylinder is connected to the oil storage ...

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Abstract

The invention relates to an automobile hydraulic power-driven assisted steering system, comprising a hydraulic pump and a motor which drives the hydraulic pump, wherein the oil inlet of the hydraulic pump is connected with an oil storage tank, the oil outlet of the hydraulic pump is connected with an energy storing device by virtue of a check valve, the energy storing device is connected with a steering assisted cylinder, and the steering assisted cylinder is connected with the oil storage tank. The automobile hydraulic power-driven assisted steering system provided by the invention remains a steering actuating mechanism on the traditional automobile, only a hydraulic system is changed, low-speed righting capability of an automobile is good, and reasonable control is adopted, thus the entire system has the characteristics of light steering at low speed and stable steering at high speed, a one-way hydraulic valve is closed after a motor stops working, the hydraulic pump can be effectively protected, and service lives of key parts of the system can be prolonged. A power source of the motor adopts a vehicle-mounted low-voltage system for providing energy, thus the automobile hydraulic power-driven assisted steering system provided by the invention is applicable to all the vehicles.

Description

Technical field [0001] The invention relates to an automobile hydraulic electric power steering system. Background technique [0002] Traditional automotive hydraulic power steering systems are generally composed of hydraulic pumps, low / high pressure tubing, pressure and flow control valve bodies, transmission belts, oil storage tanks, and power steering cylinders. The power assist characteristics are related to the front axle load and steering angle of the vehicle. The working process is as follows: (1) The engine drives the hydraulic oil pump to output pressure oil to the system; (2) After the system oil pressure reaches a certain threshold, the hydraulic pump releases pressure; (3) During the pressure release process, the hydraulic pump continues to work , To maintain the oil pressure of the entire high-pressure oil circuit at a certain preset value; (4) When the engine stops working, the system steering assist disappears. [0003] Through analysis, it can be seen that the abo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D5/065
Inventor 苏常军
Owner ZHENGZHOU YUTONG BUS CO LTD
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