Automobile brake boosting system and method

Abstract

The invention relates to the technical field of automobiles, and discloses an automobile brake boosting system and an automobile brake boosting method based on the automobile brake boosting system. The automobile brake boosting system comprises a vacuum booster, a turbocharger, a vacuumizing device and a brake pedal; an air chamber diaphragm partition plate is arranged in the vacuum booster so asto limit the interior of the vacuum booster into a positive pressure cavity and a negative pressure cavity, a vacuum valve communicated with the positive pressure cavity and the negative pressure cavity is arranged on the air chamber diaphragm partition plate, and an air valve communicated with the positive pressure cavity and a brake boosting push rod used for outputting power are arranged on thevacuum booster. The air outlet end of the turbocharger is connected with the air valve through an air guide pipe, the vacuumizing device is connected with the negative pressure cavity, and the brakeboosting push rod is connected with the brake pedal. The automobile brake boosting system has the beneficial effects that high-pressure air is provided for the vacuum booster through the turbocharger,the reaction time of the vacuum booster in the braking process is shortened, the pedal feeling is improved, and the braking distance is shortened.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an automobile brake boosting system and method. Background technique [0002] In the automobile braking system, the vacuum booster amplifies the braking force of the brake pedal through the pressure difference between the two internal chambers (positive pressure chamber and negative pressure chamber) during the braking process; During the braking process, the two chambers are not connected, and the positive pressure chamber is connected to the atmosphere and supplied to the atmosphere. However, due to the small size of the valve body of the air valve connected to the atmosphere, the air cannot be fully and timely replenished during the braking process, which will Causes the brake reaction time to increase, the braking force to lag, and affects the feel of the brake pedal. In the case of emergency braking, the braking distance increases, which affects the driving experience an...

AI Technical Summary

Problems solved by technology

[0002] In the automobile braking system, the vacuum booster amplifies the braking force of the brake pedal through the pressure difference between the two internal chambers (positive pressure chamber and negative pressure chamber) during the braking process; During the braking process, the two chambers are not connected, and the positive pressure chamber is connected to the atmosphere and supplied to the atmosphere. However, due to the small size of the valve body of the air valve connected to the atmosphere, the air cannot be fully and timely replenished during the braking process, which will The braking reaction time increases, the braking force lags, and affects the brake pedal feel. In the case of emergency braking, the braking distance increases, which affects driving experience and driving safety performance.

Images