Automobile hydraulic power-driven assisted steering system

An electric power steering and hydraulic technology, which is applied in the direction of the fluid steering mechanism, can solve the problems of large changes and inconvenient use, and achieve the effects of good low-speed return ability, reduced noise, and light steering
CN102424068AActive Publication Date: 2012-04-25ZHENGZHOU YUTONG BUS CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
ZHENGZHOU YUTONG BUS CO LTD
Publication Date
2012-04-25

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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.
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Description

technical field

[0001] The invention relates to an automobile hydraulic electric power steering system. Background technique

[0002] Traditional automotive hydraulic power steering systems generally consist of hydraulic pumps, low / high pressure oil pipes, pressure flow control valve bodies, transmission belts, oil storage tanks, and power steering cylinders. Its power assist characteristics are related to the front axle load and steering angle of the vehicle. Its 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 relief process, the hydraulic pump continues to work , so that the oil pressure of the entire high-pressure oil circuit is maintained at a certain preset value; (4) the engine stops working, and the system steering assist disappears.

[0003] Through the analysis, it can be seen...

Claims

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