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Automobile power-assisted steering system

A power steering and automobile technology, applied in the field of automobile power steering system and hydraulic system, can solve the problems of wasting engine energy and increasing engine fuel consumption, and achieve the effect of smooth steering action and reduced loss.

Active Publication Date: 2012-02-15
ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned combined dynamic load sensing full hydraulic steering system can realize the function of steering assist, but its disadvantage is that the hydraulic pump operates under the drive of the engine during straight-line driving, which wastes the energy of the engine and reduces the fuel consumption of the engine. volume increase

Method used

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  • Automobile power-assisted steering system
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Embodiment Construction

[0025] The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0026] Such as figure 1 As shown, the automobile power steering system includes a fuel tank 7, a variable pump 1, steering cylinders (5, 6), two overflow valves 9 and a hydraulic steering mechanism 2 with a reversing valve 3. In this embodiment, the reversing valve 3 is a three-position, seven-way reversing valve. The quantity of steering oil cylinder is two, is respectively steering oil cylinder one 5 and steering oil cylinder two 6. The oil inlet port of the variable variable pump 1 is connected with the oil tank 7, the oil outlet port of the variable variable pump 1 is connected to the oil inlet port of the reversing valve 3 through the oil inlet pipe 12, and the feedback oil port of the variable variable pump 1 is con...

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Abstract

The invention provides an automobile power-assisted steering system, belonging to the technical field of automobiles. The invention solves problem that the existing automobile power-assisted steering system consumes the engine power during the linear running of an automobile. The automobile power-assisted steering system comprises a steering oil cylinder, an oil tank, an oil return pipeline, a variable pump which can be connected with an engine, and a hydraulic steering mechanism which is provided with a steering valve, wherein the steering valve can be connected with a steering wheel and is provided with a feedback oil port, an oil inlet, an oil return port and at least two bidirectional oil ports; an oil outlet of the variable pump is communicated with the oil inlet of the steering valve; a feedback oil port of the variable pump is communicated with the feedback oil port of the steering valve; the steering oil cylinder is communicated with two bidirectional oil ports of the steeringvalve; and the two ends of the oil return pipeline are communicated with the oil return port of the steering valve and the oil tank respectively, and the oil return port of the oil return pipeline islocated below the oil surface. The automobile power-assisted steering system supplies oil to the steering oil cylinder through the variable pump; and during the linear running of the automobile, low displacement of the variable pump is kept, and the loss of engine power is reduced.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and relates to a hydraulic system, in particular to an automobile steering assist system. Background technique [0002] A car steering system is a driving control system that controls the movement of the wheels through the steering wheel to change the direction of the car. Automobile steering system usually adopts mechanical structure to realize automobile steering, but in the case of heavy vehicle, slow speed or sharp turn, mechanical steering system requires the driver to exert a large force on the steering wheel. [0003] In the prior art, the power steering system is set to assist the driver in adjusting the direction of the car, so as to reduce the driver's effort to turn the steering wheel. The power steering system can be roughly divided into three categories: mechanical hydraulic power steering system, electronic hydraulic power steering system, and electric power steering system. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/06
Inventor 李小红赵福全丁勇杨安志金吉刚翟洪军王建伟宋婷婷
Owner ZHEJIANG GEELY AUTOMOBILE RES INST CO LTD
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