Pedal decoupling type and integrated type brake master cylinder assembly for measuring integrated pedal displacement

Abstract

The invention relates to a pedal decoupling type and integrated type brake master cylinder assembly for measuring integrated pedal displacement, which is composed of an integrated type brake master cylinder and a high pressure oil source, wherein the integrated brake master cylinder is composed of a brake pedal, a pressure sensor, a pedal sensation simulator and a cut-out magnetic valve, a brake boosting piston, brake master cylinder pistons and reset springs; the high pressure oil outlet of the high pressure oil source is connected with the integrated brake master cylinder, so that stable and continuous brake energy is provided in the brake process. The brake master cylinder assembly has a compact structure, is high in integrated level, improves brake pedal sensation of a vehicle, has the active hydraulic boosting function in the situation of normal brake, has the passive hydraulic boosting function in the failure situation, efficiently ensures the brake safety of the vehicle, can be used for a brake-by-wire system of a conventional vehicle, and can be widely used for a brake system of a battery electric vehicle, a brake system of a hybrid powered vehicle and a fuel cell vehicle electro-hydraulic compound brake system.

Description

technical field [0001] The invention relates to an automobile brake system, in particular to a pedal decoupling integrated brake master cylinder assembly with integrated pedal displacement measurement. Background technique [0002] During the working process of the braking system of the car, the displacement of the brake pedal reflects the driver's braking manipulation intention. Therefore, it is necessary to install a brake pedal displacement sensor during the electrification modification of transmission vehicles or the development of electric vehicles. The pedal force-travel pedal characteristic composed of brake pedal force and brake pedal travel is an important index for evaluating the braking feeling of the braking system. [0003] One of the outstanding advantages of electric vehicles such as pure electric vehicles, hybrid electric vehicles and fuel cell electric vehicles is that they can realize regenerative braking energy recovery, that is, when braking, part of the ...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned solutions, the traditional brake pedal displacement sensor is used to identify the driver's operation intention, which is not convenient for the modification of the traditional braking system, and some of the improved structures are more complicated, and the manufacturing process is extremely demanding; some systems require control logic. Complicated and expensive to implement; some still retain the vacuum booster, but need to add an additional vacuum pump

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