Slip-controlled brake system with fast-fill cylinder

US4729609A · kind A · utility

Assignee

• Alfred Teves GmbH · DE

Inventors

• Wolfram Seibert · Darmstadt, DE
• Norbert Ocvirk · Offenbach, DE
• Juergen Schonlau · Eltville am Rhein, DE
• Guenter Trach · Offenbach, DE

Key dates

• Filing date: Jul 24, 1986
• Grant date: Mar 8, 1988
• Expiry date: Jul 24, 2006

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60T13/146
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

For attaining an abrupt change in ratio, in a slip-controlled brake system for automotive vehicles, the chamber (11) of a fast-fill cylinder (4) is connected to a plunger chamber (41) of the braking pressure generator (1) which is acted upon by the booster piston (40), while the pressure line (7) leading from the plunger chamber (41) to the fast-fill cylinder (4) contains a pressure-controlled directional control valve (8) governing a pressure-fluid conduit to the pressure-supply reservoir (31). The annular chamber (50) of the fast-fill cylinder (4) is connected by way of a return line (55) to the pressure-supply reservoir (31) and with the prechamber (18) of the master cylinder (15) by way of a pressure line (56), while a pressure-controlled two-way/two-position directional control valve (9) with a non-return valve connected in parallel thereto is arranged in the return line (55). Upon failure of the auxiliary-energy supply system (2), the stepped piston (12), the valve (8) and the piston (51) of the intermediate member (39) remain in their inactive position so that the pressure build-up in the brake circuits (36, 37) is affected through the pistons (32, 33) exclusively.