Pneumatic and hydraulic boosted steering system
A power steering and pneumatic hydraulic technology, applied in the direction of fluid steering mechanism, etc., can solve problems such as energy waste, achieve the effect of reducing load and preventing waste of air source
Inactive Publication Date: 2012-05-02
ZHENGZHOU YUTONG BUS CO LTD
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Problems solved by technology
[0005] The purpose of the present invention is to provide a pneumatic hydraulic power steering system to solve the problems of energy waste in the existing hydraulic steering system
Method used
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[0013] Such as figure 1 Shown is a schematic structural diagram of a specific embodiment of the pneumatic hydraulic power steering system of the present invention. It can be seen from the figure that the system includes an air pump 1 and an air storage bag 3 connected to its output end, and also includes a detection device 12 and a control device connected to it 11. The detection device is respectively used to obtain signals from the rotation sensor of the steering wheel angle, the vehicle speed sensor for obtaining the vehicle speed, and the pressure sensor 7 for obtaining the oil pressure in the gas-liquid converter; the output terminal of the air storage bag 3 It is connected to the inlet of a two-position three-way valve 5, and the two outlets of the two-position three-way valve are respectively connected to a gas-liquid converter 6. The two-position three-way valve is a solenoid valve and is connected to the control output end of the control device 11. Control connection;...
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The invention relates to a pneumatic and hydraulic boosted steering system which comprises an inflating pump, a gas storage bag, a detecting device and a control device, wherein the gas storage bag is connected with the output end of the inflating pump; the control device is in control connection with the detecting device; the output end of the gas storage bag is connected with an inlet of a two-position three-way valve; two outlets of the two-position three-way valve are respectively connected with a pneumatic and hydraulic converter; the two-position three-way valve is an electromagnetic valve and is connected with the control output end of the control device; a hydraulic outlet of the pneumatic and hydraulic converter is in control connection with a steering device; a hydraulic inlet of the pneumatic and hydraulic converter is connected with an oil tank; and a one-way valve is arranged between the pneumatic and hydraulic converter and the oil tank. According to the pneumatic and hydraulic boosted steering system disclosed by the invention, by adopting pneumatic and hydraulic mixed boosted steering, air pressure is generated by inflation with the inflating pump for working, thusthe relation between a hydraulic pump and an engine is thoroughly eliminated, a power source of the traditional hydraulic boosted steering is changed, gas source waste is prevented when whole car gasutilization is not needed, the load of an engine starter is reduced and an executing mechanism of the traditional boosted steering is fully utilized.
Description
technical field [0001] The invention relates to a pneumatic hydraulic power steering system. Background technique [0002] Traditional automotive hydraulic power steering systems are generally composed of hydraulic pumps, low / high pressure oil pipes, pressure flow control valve bodies, transmission belts, oil storage tanks, and steering gears. 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 entire The oil pressure of the 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 that the above-mentioned steering system has the following disadvantages: (1) As long as the engine is running, no matter whether the vehic...
Claims
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Inventor 杨卫锋
Owner ZHENGZHOU YUTONG BUS CO LTD