Combination valve device for controlling distributive use of compressed air for vehicle

Abstract

The invention discloses a combination valve device for controlling the distributive use of compressed air for a vehicle. The combination valve device comprises a compressed air inlet, a duty-ratio valve air inlet, a pressure sensor, a switching valve air inlet, a switching valve stop position, a two-way air port communicating with a first air consuming unit and a two-way air port communicating with a second air consuming unit, wherein the output end of the compressed air inlet is connected with the input end of the duty-ratio valve air inlet, the output end of the compressed air inlet and theoutput end of the duty-ratio valve air inlet are connected with the input end of the switching valve air inlet, the input end of the switching valve air inlet is connected with the output end of the pressure sensor, and the output end of the switching valve air inlet is connected with the input end of a first switching valve air release port and the input end of a second switching valve air release port. By means of the combination valve device for controlling the distributive use of the compressed air for the vehicle, the real-time and demand-based control and distribution of the compressed air are achieved through simple and standard three-position five-way switching valve and duty-ratio valve structures according to the characteristic that the two air consuming units of an automobile have compressed air consuming demands in different time periods. The combination valve device is suitable for automobiles.

Description

technical field [0001] The invention relates to the technical field of the automobile industry, in particular to a combined valve device for controlling the distribution of compressed air for vehicles. Background technique [0002] With the continuous improvement of people's living standards, automobiles have gradually become more common means of transportation, and the brake structure of automobiles is one of the most important safety structures. The existing combined valve device used to control the distribution of compressed air for braking is based on two functions Two independent pressure adjustment mechanisms and controllers are used to realize the real-time and on-demand control of pressure and flow for the gas demand of different pressure and flow characteristics of the gas unit; [0003] The existing combination valve device used to control the distribution of compressed air for brakes cannot realize the real-time and on-demand control and distribution of compressed...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a combined valve device for controlling the distribution of compressed air used in vehicles, so as to solve the problem in the above-mentioned background technology that the compressed air demand cannot be realized according to the characteristics that the two gas units of the vehicle do not have compressed air demand at the same time period. The real-time and on-demand control and distribution of air, and the air supply control of each air unit need to be matched with a controller unit, pressure regulation structure and pressure sensor. The hardware and software structure is complicated and the cost is high; control parameters also need to be separated Calibration and verification, cannot be reused, and the problem of long development cycle

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