Slip-controlled brake system for automotive vehicles

US4720151A · kind A · utility

Assignee

• Alfred Teves GmbH · DE

Inventors

• Juan Belart · Walldorf, DE
• Wolfram Seibert · Darmstadt, DE
• Norbert Ocvirk · Offenbach, DE

Key dates

• Filing date: Jul 24, 1986
• Grant date: Jan 19, 1988
• Expiry date: Jul 24, 2006

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T17/18
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A slip-controlled brake system for automotive vehicles comprising two static brake circuits (17, 18) into which a pressure medium is introduceable from a dynamic pressure medium circuit (21, 23) during the control operation, and one dynamic brake circuit (14). Directional control valves (7, 8, 9) are interposed in the brake circuits (14, 17, 18). The directional control valves permit a reduction of the pressure in the wheel brakes and a return flow of the pressure medium to the storage reservoir (3). In addition, two pressure-controlled three-way/two-position valves (40, 40') are interposed in the rear wheel brake circuit (14) between the rear axle regulating valves (6, 9) and the wheel cylinders of the rear wheel brakes (HL, HR). The valves are actuated by the pressure in the front wheel brake circuits (17, 18). The three-way/two-position valves (40, 40') have the effect of reducing the pressure in the diagonal rear wheel break circuit in the event of a failure of one of the front wheel brake circuits due to a defect.