Hydraulic braking system for a vehicle having at least two axles

US11814019B2 · 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: May 24, 2019
• Grant date: Nov 14, 2023
• Expiry date: Jul 3, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T2270/413
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A hydraulic braking system for a vehicle has two sub-braking systems hydraulically separated from one another. A first sub-braking system of a first axle has a first circuit, a main system with a first power supply and a first ECU, and a secondary system with a second power supply and a second ECU. The first circuit includes first and second pressure generators assigned, respectively, to the main system and the secondary system, in parallel between a fluid container and wheel brakes. A modulation unit connects the pressure generators to the wheel brakes. A second sub-braking system of a second axle includes a second circuit and an auxiliary system with a third power supply and a third ECU. The second circuit includes a pressure generator assigned to the auxiliary system arranged between a fluid container and wheel brakes, and a modulation unit connecting the pressure generators to the wheel brakes.