Solenoid valve for pneumatic brake-by-wire system and using method thereof

Abstract

The invention relates to a solenoid valve for a pneumatic brake-by-wire system and a method for using the solenoid valve, which belongs to the technical field of automobile brake accessories, and includes a valve body 1, which includes a proportional solenoid valve A, a solenoid valve B, and a solenoid valve C. Pressure maintaining valve D, pressure maintaining valve E, control port 600 , input air chamber 101 , pressure maintaining air chamber 201 , air storage chamber 301 , brake air chamber 401 and exhaust air chamber 501 . The invention realizes the integrated integration of multiple electromagnetic valves, and the overall structure is compact; the relay valve is removed, and the electromagnetic valve is used to directly control the process of boosting, pressure maintaining, and pressure releasing, and the response is fast and sensitive, which is beneficial to shortening the braking reaction time and contact time; there is no need for additional detection devices such as pressure sensors, low requirements on the control air circuit, and simple control logic, which is more conducive to the application of most vehicles; Control braking is not affected and still has a braking effect.

Description

technical field [0001] The invention relates to a solenoid valve used in a pneumatic wire brake system and a method for using the same, belonging to the technical field of automobile brake accessories. Background technique [0002] Conventional automotive pneumatic anti-lock braking system is referred to as pneumatic ABS. Its internal air circuit is more complicated, the brake air circuit is long, easy to block the air circuit, and the air supply is insufficient, resulting in slow braking effect and long braking distance. Long, thus affecting the safety and reliability of braking. [0003] The electronic brake system EBS is a new generation of electronic brake system developed on the basis of the brake anti-lock brake system ABS. With its shorter brake response time, better brake stability and ease of maintenance, etc. Advantages, most cars in our country have begun to use EBS to replace the traditional air brake system. [0004] In the EBS system, the core component is th...

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Problems solved by technology

[0004] In the EBS system, the core component is the proportional relay valve. The proportional relay valve integrates the proportional solenoid valve and the relay valve. The opening and closing of the relay valve are indirectly controlled by the proportional solenoid valve, which causes it to There is a response lag in the system, which may easily cause long or inaccurate braking time. For large vehicles, it often cannot meet the demand

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