Multiple-circuit hydraulically open braking system, in particular for a highly automated or autonomous vehicle

US11505169B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Thomas Friedrich · Bietigheim-Bissingen, DE
• Dirk Drotleff · Oberstenfeld, DE
• Ralf Kleemann · Benningen am Neckar, DE
• Daniel Brenndoerfer · Ludwigsburg, DE
• Bernd Hienz · Ludwigsburg, DE

Key dates

• Filing date: Jan 7, 2019
• Grant date: Nov 22, 2022
• Expiry date: Jan 30, 2039

Classification

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

Abstract

A multiple-circuit hydraulically open braking system, for a highly automated or autonomous vehicle, includes at least two wheel brakes each assigned to a braking circuit having a pressure relief path, two multiple-circuit pressure generators hydraulically connected in series between a fluid container and the at least two wheel brakes, and a hydraulic unit for hydraulically connecting the pressure generator to the at least two wheel brakes and for individual brake pressure modulation in the at least two wheel brakes. A first pressure generator is configured as a plunger system and is assigned to a main system having a first energy supply and a first evaluation and control unit. A second pressure generator is configured as a second plunger system or as a pump system and is assigned to a secondary system having a second energy supply that is independent from the first energy supply and a second evaluation and control unit.