A kind of service brake system and vehicle

Abstract

The embodiment of the invention discloses a service braking system and a vehicle, wherein the service braking system comprises a gas reservoir, a brake valve, two electromagnetic relay valves and brake gas chambers, and the gas reservoir is connected with a gas inlet of the brake valve and gas inlets of the two electromagnetic relay valves through gas channels correspondingly and is used for supplying an air source. A gas outlet of the brake valve is connected with control ports of the two electromagnetic relay valves through gas channels correspondingly. Gas outlets of the two electromagneticrelay valves are connected with the brake gas chambers on the same sides through gas channels correspondingly and are used for supplying gas for the brake gas chambers. The service braking system provided by the embodiment of the invention can quicken response, the quantity of parts is reduced, cost is lowered substantially, and assembly manufacturability is improved greatly.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of vehicle braking, in particular to a service braking system and a vehicle. Background technique [0002] The brake response time when the vehicle is braked by air pressure means, when the actuation time is 0.2S, from the start of actuation of the control device of the brake system to the most unfavorable pressure of the brake air chamber reaching its steady-state maximum pressure value 75% of the time elapsed. Both "Automobile Brake System Structure, Performance and Test Methods" and "Motor Vehicle Operation Safety Technical Conditions" stipulate that the braking response time of heavy-duty trucks should not exceed 0.6s. Many domestic heavy-duty trucks have harsh driving conditions, and the requirements for brake response time are more stringent. [0003] At present, a technical solution for the braking system of heavy-duty trucks is as follows: the air storage tank can provide ...

AI Technical Summary

Problems solved by technology

However, the defect of this technical solution is that, on the one hand, after the gas source gas passes through a relay valve, it needs to pass through two anti-lock solenoid valves on the left and right, and simultaneously brake to the center right, center left, rear right and rear left. The air supply of the air chamber, because the gas enters too many brake air chambers through a single relay valve, causes the whole system to lag in response time; on the other hand, the anti-lock solenoid valve receives the signal of the anti-lock brake control unit, Adjust the air pressure to achieve the anti-lock function. The characteristics of the anti-lock solenoid valve determine that there is a throttling in the air path aperture, which further leads to a long time for the gas to build up pressure in the brake chamber and slow response.

However, this solution also has the problem of adding key components, which will still cause problems such as increased cost, complicated connecting pipelines and difficult assembly processes

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