Friction clutch for a motor vehicle and an operation device for the operation, especially pneumatic operation, of a friction clutch

US6116399A · kind A · utility

Assignee

• Fichtel & Sachs · DE

Inventors

• Hans-Jurgen Drexl · Schonungen, DE
• Wolfgang Grosspietsch · Schweinfurt, DE
• Manfred Wehner · Geisenheim, DE
• Herbert Voit · Schweinfurt, DE
• Joachim Lindner · Schweinfurt, DE
• Thomas Otto · Würzburg, DE
• Jorg Willert · Schweinfurt, DE

Key dates

• Filing date: Jun 11, 1997
• Grant date: Sep 12, 2000
• Expiry date: Jun 11, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S192/01
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An operation device for a friction clutch arranged in the drive train of a motor vehicle. The operation device includes a positioning servo arrangement with a pneumatic power cylinder arrangement. The pneumatic power cylinder arrangement acts on a clutch release sleeve arrangement. The positioning servo arrangement can be operated with a control valve that is connected to a pneumatic source depending on a command variable representing a desired position and an actual variable representing the axial position of the clutch release sleeve arrangement. The pneumatic power cylinder arrangement is arranged inside of the bell-shaped housing and the control valve is arranged outside of the bell-shaped housing or the bell-shaped housing is arranged at least partially inside of the bell-shaped housing, but is accessible from the outside and/or can be removed when the bell-shaped housing is attached to the combustion engine.