Vacuum boosting method of automotive brake with emergency braking assisting function

Abstract

The invention discloses a vacuum boosting method of an automotive brake with an emergency braking assisting function. Vacuum boosting is achieved by an automobile braking vacuum booster with an emergency braking assisting function. When a driver pedals a brake pedal at the speed above 800m / s, a slide valve hook generates deformation and is disconnected with a protrusion on a slide valve, and then the slide valve is free from constraint of the slide valve hook to move right so as to squeeze a rubber valve seat, so that a distance between the rubber valve seat and an air valve seat is increased rapidly, resistance to air of a rear cavity during flowing is reduced, flow of the air of the rear cavity is increased, further braking force is increased rapidly, and quick boosting during emergency braking is achieved. By the method, in the initial stage of emergency braking, braking force can be increased rapidly, and braking distance during emergency braking is shortened. Compared with an existing booster, the vacuum booster has the advantages of rapid response, simple structure, good reliability, high practicality, irrelevance of boosting amplitude and pedal travel and the like.

Description

technical field [0001] The invention relates to a brake boosting method, in particular to a vacuum boosting method for an automobile brake with an emergency braking auxiliary function. Background technique [0002] In order to cope with unexpected accidents and dangerous situations, improve the braking performance of the car, enhance the safety of the car, and reduce the casualties caused by untimely braking, the car brake booster has been generally configured on various types of cars. The car brake vacuum booster has also become one of the most commonly used accessories on the car. [0003] Existing automotive brake vacuum boosters generally rely on the stroke of the brake pedal to control the braking force when applying the braking force: the deeper the pedal is stepped on, the greater the braking force applied. There are still certain problems in the application of such a booster method: when an emergency situation requiring rapid braking occurs, it is often necessary fo...

AI Technical Summary

Problems solved by technology

There are still some problems in the application of this power assist method: when an emergency situation that requires rapid braking occurs, it is often necessary for the braking system to quickly apply a large braking force to achieve rapid deceleration of the vehicle

However, in the existing booster system, when the driver steps on the brake pedal, the braking force gradually increases, and the rapid braking required in an emergency cannot be achieved.

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