Hydraulic brake system for a vehicle

US6079796A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Guenther Schmidt · Tauberbischofsheim, DE
• Jurgen Breitenbacher · Bad Sobernheim, DE
• Hans-Jorg Wolff · Schorndorf, DE
• Rainer Heinsohn · Tamm, DE
• Andreas Klug · Leonberg, DE
• Hermann Kaess · Markgröningen, DE
• Peter Zeiner · Raubling, DE

Key dates

• Filing date: Aug 11, 1998
• Grant date: Jun 27, 2000
• Expiry date: Aug 11, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T8/4872
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a hydraulic brake system of a vehicle comprising one wheel brake valve preceding each wheel brake cylinder and one return feed pump connected parallel to each of the wheel brake valves and connected to the suction sides of the wheel brake cylinders. For anti-lock control, the return feed pump is put into operation, and by clocked triggering of a wheel brake valve of a vehicle wheel that is tending to lock, the brake fluid pressure in the wheel brake cylinder of this vehicle wheel is modulated. To realize a traction control device, the invention sets forth a switchover valve in a brake line from the master brake cylinder to the wheel brake cylinder of a driven vehicle wheel. By closing the switchover valves and driving the return feed pump brake fluid can be aspirated from the master brake cylinder by the wheel brake valve of the non-driven vehicle wheel and pumped into the wheel brake cylinder of the driven vehicle wheel, and by this feed pump a brake force can be generated in order to avert spinning of the vehicle wheel.