Method for operating a brake system, and brake system

US11958453B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Bertram Foitzik · Ilsfeld, DE
• Joerg Riethmueller · Heilbronn, DE
• Oliver Fuchs · Offenbach am Main, DE
• Timo Haible · Backnang, DE

Key dates

• Filing date: May 25, 2019
• Grant date: Apr 16, 2024
• Expiry date: Oct 3, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2270/88
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for operating a brake system. A brake request signal characterizing a brake request is generated by actuating a positioner system of an actuating circuit, and a setpoint brake pressure required in an active circuit is ascertained based on the brake request signal. An actual brake pressure is set in the active circuit according to the setpoint brake pressure using a pressure generation device by moving a displacement piston using an electric motor to actuate a wheel brake coupled with the active circuit. Under the condition that the brake request signal is constant over a predefined period of time, a pressure modulation is carried out, which includes setting the actual brake pressure in the active circuit to a value that is greater than the setpoint brake pressure, and lowering the actual brake pressure by moving the displacement piston using the electric motor until the setpoint brake pressure is reached.