Electronic power-assisted brake device

Abstract

The invention provides an implementation mode of an electronic power-assisted brake device. The electronic power-assisted brake device comprises a main shell, an oil can, a driving piston, a master cylinder piston, a power-assisted piston, a master cylinder input push rod, a power-assisted provider and a pedal feeling simulator. Wherein the oil pot is installed on the main shell, and a normal pressure cavity, a simulation cavity, a boosting cavity and a main cylinder cavity which are relatively independent are formed in the main shell. According to the electronic power-assisted brake device, an oil can, a driving piston, a main cylinder piston, a power-assisted piston, a main cylinder input push rod, a power-assisted provider and a pedal feeling simulator are integrally installed on a main shell, and a normal pressure cavity, a simulation cavity, a power-assisted cavity and a main cylinder cavity which are formed in the main shell are located on the same axis; the driving piston, the main cylinder input push rod, the boosting piston and the main cylinder piston are also located on the same axis, and after the boosting provider loses efficacy, a driver can conveniently and directly act force of a pedal on the main cylinder piston in a straight-stroke mode to achieve braking.

Description

technical field [0001] The invention relates to the technical field of vehicle braking, in particular to an electronic power-assisted braking device. Background technique [0002] With the development of vehicle electrification and intelligence, the demand for intelligent chassis, especially electronic braking, continues to increase. The electrification of vehicles has replaced the vacuum source solution required by traditional vacuum boosters, making electronic power assistance a trend. The energy recovery function of electric vehicles puts forward special requirements for the braking system, that is, the driver's braking request is coordinated and distributed by friction braking (hydraulic braking) and motor regenerative braking. This requirement makes the driver's brake pedal input and the actual hydraulic braking force no longer have a fixed correspondence. For the traditional vacuum booster or the known ibooster electronic booster product launched by BOSCH, the actual...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide an electronic power-assisted braking device to solve the technical problems in the prior art that the electronic power-assisted braking device has a poor simulated foot feel and has a complex structure and a large volume.

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