Motor vehicle braking system with and traction control and/or movement dynamics regulating device

US6074018A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Peter Zeiner · Raubling, DE
• Jurgen Breitenbacher · Bad Sobernheim, DE
• Hans-Jorg Wolff · Schorndorf, DE
• Rainer Heinsohn · Tamm, DE
• Andreas Klug · Leonberg, DE
• Hermann Kaess · Markgröningen, DE
• Karl-Heinz Willmann · Glückstadt, DE

Key dates

• Filing date: Aug 14, 1998
• Grant date: Jun 13, 2000
• Expiry date: Aug 14, 2018

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T8/4291
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

The invention is based on a dual-circuit anti-lock vehicle brake system (10) with a tandem master cylinder (12), a switchover valve (14) following the latter, a brake pressure modulation valve assembly (18, 20) that has a brake pressure buildup valve (18) and a brake pressure reduction valve (20) for each wheel brake cylinder (16), and a return pump (24). To enable building up brake pressure rapidly for vehicle dynamics control, the invention proposes one additional pump (28) in each brake circuit (I, II), whose intake side is connected directly to the master cylinder (12) and which feeds in the direction of the wheel brake cylinders (16) connected to to this brake circuit (I, II). As a result, a brake pressure buildup is possible in each wheel brake cylinder (16), even when the master cylinder (12) is not actuated, which buildup can be modulated for individual wheels in a manner known per se.