Hydraulic brake device having an anti-skid system

US5501514A · kind A · utility

Assignees

• Robert Bosch GmbH · DE
• Mercedes-Benz Group AG · DE

Inventors

• Reinhard Resch · Stuttgart, DE
• Anton Van Zanten · Ditzingen, DE
• Rainer Lauer · Schwieberdingen, DE
• Regina Schroff-Lauer, heir · Rutesheim, DE
• Joscha Lauer, heir · Rutesheim, DE
• Rainer Altmann · Erligheim, DE
• Ju/ rgen Binder · Schwieberdingen, DE
• Michael Meyer · Altdorf, DE

Key dates

• Filing date: Aug 19, 1994
• Grant date: Mar 26, 1996
• Expiry date: Aug 19, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S303/02
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A vehicle hydraulic brake system having an anti-lock protection device and an automatic braking system, particularly when driving around bends. During automatic braking, an auxiliary pressure source supplies a pressure instead of the main brake cylinder and this pressure can be individually set by pressure reduction in the wheel brakes by means of the anti-lock protection device. For this purpose, cylinders with separating pistons are located between the auxiliary pressure source and the anti-lock protection device. The auxiliary pressure source supplies substantially lower auxiliary pressures than known systems by supplying pressure to the inlets of feed-back pumps by arranging valves which permit temporary pressure increases to the extent necessary for automatic braking by means of these feed-back pumps. The system requires less energy and less noise is caused in automatic braking operations.