Automobile vacuum power-assisted braking system

• Main Authors: LYU LINGZHI, HE CHENYU, LI HAIXIA
• Format: Patent
• Language: Chinese; English
• Published: 03.11.2020
• Subjects: ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; PERFORMING OPERATIONS; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OFVEHICLES; TRANSPORTING; VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES; VEHICLES IN GENERAL

An automobile vacuum booster braking system comprises a mechanical vacuum pump, a vacuum pipeline, a vacuum booster, an ESC assembly and a vacuum degree sensor. A one-way valve is not arranged on a vacuum pipeline for connecting the mechanical vacuum pump to the vacuum booster to carry out medium-and-long-term pressure maintaining on the vacuum booster, an ESC assembly replaces the medium-and-long-term pressure maintaining function of the one-way valve through safety logic, and when a vehicle is powered on or started, a vacuum degree sensor detects the vacuum degree of the vacuum booster and transmits a vacuum degree signal to an ESC; when a driver steps on the brake, the ESC judges a vacuum signal from the vacuum degree sensor: if the vacuum degree is less than a designed threshold value,it is judged that the vacuum degree is insufficient, the ESC assembly actively pressurizes brake fluid, and therefore power-assisted braking is conducted. A one-way valve is canceled on a pipeline hardware structure, and saf