Air pressure integrated electronic parking system for commercial vehicle

Abstract

The invention discloses an air pressure integrated electronic parking system for a commercial vehicle, and belongs to the technical field of vehicle brake control. The air pressure integrated electronic parking system comprises a compressed air tank (10), a two-position two-way pneumatic control valve (2), a relay valve (4), a throttle valve (9), an electric control unit (7), a pressure sensor (8), a spring brake chamber (6), a silencer (5), a manual air inlet / outlet (11), a two-position two-way solenoid valve (1) and a two-position three-way solenoid valve (3). The air pressure integrated electronic parking system has the characteristics of simple structure, good controllability and high safety.

Description

technical field [0001] The invention relates to the technical field of vehicle brake control, in particular to a commercial vehicle air pressure integrated electronic parking system. Background technique [0002] With the development of automatic driving and intelligent braking technology, the shift from traditional manual parking to electronic parking has become an inevitable trend in the development of braking technology. In addition to the traditional handbrake function, the electronic parking system should also have functions such as hill start assistance, dynamic braking, and slope prevention. Therefore, the electronic parking system also puts forward higher requirements for the function and performance of the parking control valve. Compared with the general application on passenger cars, due to the limitation of the function and performance of the parking control valve, the application of electronic parking in the field of commercial vehicles is still in its infancy, e...

AI Technical Summary

Problems solved by technology

[0005] (1) When the industrial double electric control two-position three-way solenoid valve is directly applied to the control of the pneumatic brake system, due to the problem of response time lag, it is difficult to achieve high-speed inflation and deflation, and cannot meet the dynamic parking requirements;

[0006] (2) The plunger valve core is easy to freeze due to condensation in a low temperature environment, resulting in the valve core being stuck, the system failing, and the environmental applicability is poor;

[0007] (3) When driving, when the two-position two-way solenoid valve suddenly loses power, the system is difficult to maintain the current state, and sudden braking may cause accidents;

[0008] (4) When parking, if the solenoid valve leaks, it may cause the pressure to accumulate and the car will slide, thereby reducing the reliability and safety of the system

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