Air-pressure electric-control auxiliary brake device

Abstract

The invention relates to an air pressure electric control auxiliary braking device, which comprises an original vehicle front braking loop, an original vehicle back braking loop, an electric control front braking loop and an electric control back braking loop, wherein the electric control front braking loop is formed by sequentially connecting an air inlet of a shuttle valve, a first high-speed switching valve, a first check valve, a quick release valve and a front braking air chamber by a front air storage cylinder in series; the electric control front braking loop and the original vehicle front braking loop are connected in parallel; the electric control back braking loop is formed by sequentially connecting the other air inlet of the shuttle valve, the first high-speed switching valve, a second check valve, a relay valve and a back braking air chamber by a back air storage cylinder in series; the electric control back braking loop and the original vehicle back braking loop are connected in parallel; a first pressure sensor is arranged between an upper cavity of a double-cavity braking valve in the original vehicle front braking loop and the quick release valve; a second pressure sensor is arranged between the quick release valve and a front braking chamber; a third pressure sensor is arranged between the relay valve and the back braking air chamber; a second high-speed switching valve is arranged between the upper cavity of the double-cavity braking valve in the original vehicle front braking loop and the quick release valve; and a third high-speed switching valve is arranged between a lower cavity of the double-cavity braking valve in the original vehicle back braking loop and the relay valve. The air pressure electric control auxiliary braking device has the advantages of simple structure, low cost, convenient installation and wide application range.

Description

technical field

[0001] The invention relates to the field of traffic safety, in particular to a pneumatic electric control auxiliary braking device. Background technique

[0002] Traffic accidents are serious problems faced by modern society, and about 90% of traffic accidents are related to driver factors (such as fatigue, drunkenness, lack of driving experience, etc.). It is an important issue that Intelligent Transportation System (ITS) is committed to solving. The safety performance of the vehicle depends to a large extent on the performance of the vehicle braking system, so improving the performance of the vehicle braking system is of great significance for improving the safe driving of vehicles and reducing traffic accidents.

[0003] The electronically controlled auxiliary braking device is a safety execution component of a vehicle driving safety assistance system (such as an adaptive cruise control system, an active collision avoidance system, etc.), and it can gene...

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