Axle module, pneumatic brake-by-wire system and control method
A technology of air pressure and controller, applied in the direction of brakes, brake transmission devices, vehicle components, etc., can solve the problems of high cost and complex structure, and achieve the effect of low cost, simple overall structure and good pressure control effect.
Active Publication Date: 2020-10-02
TSINGHUA UNIV
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Problems solved by technology
[0003] The purpose of the embodiments of the present application is to provide a bridge module, a pneumatic brake-by-wire system and a control method, so as to improve the problems of complex structure and high cost of the existing bridge module
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[0025] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
[0026] The applicant found that: the existing pneumatic brake-by-wire system uses different axle modules on different axles, and the overall configuration of the axle modules is not universal for the front and rear axles, and the installation is complicated; The module and two ABS valves jointly adjust the pressure, the number of valve bodies is large, and the pressure control effect is poor; the rear axle adopts a double-way bridge module, and the double-way bridge module has two relay valves and six switch valves inside, which has a complex structure and high cost.
[0027] In view of the above problems, the applicant proposes the following embodiments to solve the above problems after research and exploration.
[0028] Please refer to figure 1 , the embodiment of the present application provides...
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The invention provides an axle module, an air pressure line control system and an air pressure line control method. The axle module comprises a switch valve, a double-path verifying valve, a relay valve, an air inlet valve and an exhaust valve. The air outlet of the switch valve is connected to the first air inlet of the double-path verifying valve; the air outlet of the double-path verifying valve is connected to the first air inlet of the relay valve; and the air outlet of the air inlet valve is connected to the air inlet of the exhaust valve. The axle module is internally composed of the switch valve, the double-path verifying valve, the relay valve, the air inlet valve and the exhaust valve. The air inlet valve and the exhaust valve are switch valves and the costs of the switch valvesand the relay valve are far lower than that of the relay valve. Compared with a combination of a rear axle using two relay valves and six switch valves, the relay valve is replaced by the switch valveand the double-path verifying valve, so that the cost is relatively low and the integral structure is also relatively simple. Compared with a front axle which uses a single-path axle module and two ABS valve to adjust the pressure jointly, the pressure control effect is better.
Description
technical field [0001] The present application relates to the field of automobiles, in particular, to an axle module, a pneumatic brake-by-wire system and a control method. Background technique [0002] Pneumatic braking by wire system (Pneumatic braking by wire system) is the core technology of commercial vehicle electronically controlled braking execution, and is the hardware basis for the application of advanced driver assistance technology (ADAS) and automatic driving technology in commercial vehicles. The existing pneumatic brake-by-wire system uses different axle modules on different axles. The overall configuration of the axle modules is not universal for the front and rear axles, and the installation is complicated; in the prior art, the front axle uses a single-way axle module with two ABS (antilock brakesystem, anti-lock brake system) valves jointly adjust the pressure, the number of valve bodies is large, and the pressure control effect is poor; the rear axle adop...
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IPC IPC(8): B60T8/32B60T8/38B60T13/26
CPCB60T8/327B60T8/38B60T13/26
Inventor 魏凌涛王翔宇李亮
Owner TSINGHUA UNIV