Actuation device for a friction clutch

US6575283B2 · kind B2 · utility

Assignee

• Mannesmann Sachs AG · DE

Inventors

• Hans-Jurgen Drexl · Schonungen, DE
• Thomas Otto · Würzburg, DE
• Hans Fliege · Haßfurt, DE
• Jürgen Schmitt · Fürth, DE

Key dates

• Filing date: Apr 16, 2001
• Grant date: Jun 10, 2003
• Expiry date: Apr 16, 2021

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2500/7041
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In an actuation device for a friction clutch which is arranged in the drivetrain of a motor vehicle between a drive unit and a transmission, comprising a pressure medium force cylinder arrangement by means of which the friction clutch can be actuated via a release member, a measuring arrangement which detects an actual release, a control/regulating valve arrangement which is connected with a pressure medium source, with a pressure compensation opening or a pressure compensation reservoir and with the pressure medium force cylinder arrangement and which is controllable electrically, by means of which valve arrangement the pressure medium force cylinder arrangement can be actuated depending on the actual release and on a reference release which can be predetermined, the control/regulating valve arrangement can be actuated via control/regulating electronics depending on the actual release, on an electrically presettable command variable and on a characteristic line converting the command variable into the reference release, wherein several different characteristic lines are provided which can be selectively activated depending on a desired driving behavior and/or depending on driving …