Hydraulic system and a method for degassing same

US6079206A · kind A · utility

Assignees

• GETRAG Getriebe- und Zahnradfabrik Hermann Hagen · DE
• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Gunther Petrzik · St. Georgen, DE
• Hartmut Hohensee · Unterschleißheim, DE
• Martin Seufert · Steinheim, DE

Key dates

• Filing date: Jul 8, 1997
• Grant date: Jun 27, 2000
• Expiry date: Jul 8, 2017

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2061/004
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A hydraulic actuator and a method for degassing hydraulic actuators having t least two chambers are disclosed. For actuating a hydraulic element, for example a piston in a piston-and-cylinder unit the hydraulic actuator may be supplied with pressurized hydraulic fluid from a hydraulic source via gate valves. The chambers may be interconnected via another gate valve such that when the other gate valve is open, a closed flushing circuit may be configured, starting from a hydraulic fluid container via a hydraulic pump, a first gate valve, a first chamber, the additional valve, a second chamber, a second gate valve and back to the hydraulic fluid container.