Vehicle brake system having electronic pressure regulation, and method for controlling a vehicle brake system having electronic pressure regulation

US10286884B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Alfred Strehle · Fellbach, DE
• Marko Flinner · Boxberg, DE
• Matthias Schanzenbach · Weinsberg, DE
• Thomas Schmidt · Hannover, DE

Key dates

• Filing date: May 1, 2017
• Grant date: May 14, 2019
• Expiry date: May 1, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2270/402
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A vehicle brake system having electronic pressure regulation and a related method, in which the system stabilizes a vehicle, supports the actuation of the brake system, and/or enables a fully/partly automated driving operation. The system has a primary actuator system that sets/regulates different brake pressures at the wheel brakes, and an electronically controllable secondary actuator system that secures the vehicle brake system against primary actuator failure. For a primary actuator error, the secondary actuator is controlled so that the secondary system produces a brake pressure that, based on the dynamic axle load displacement, occurring during a braking process, in the direction of a front axle, is greater than the brake pressure that is convertable into a rear axle wheel brake braking power. A device reduces this brake pressure at the rear axle wheel brake to a value at which the vehicle wheel, assigned to this wheel brake, does not lock.