Apparatus for actuating an aggregate in the power train of a motor vehicle

US5954178A · kind A · utility

Assignee

• LuK Getriebe-Systeme GmbH · DE

Inventors

• Robert Fischer · Bogen, DE
• Norbert Esly · Schömberg, DE
• Reinhard Berger · Bühl, DE
• Karl-Ludwig Kimmig · Borgo San Lazzaro, DE

Key dates

• Filing date: Jan 31, 1997
• Grant date: Sep 21, 1999
• Expiry date: Jan 31, 2017

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D2500/31466
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A control unit for a friction clutch or another torque transmitting system and/or for a transmission system in a motor vehicle employs an actor having an electric motor arranged to drive a single-stage or multi-stage transmission which, in turn, transmits motion to one or more mobile parts of the torque transmitting and/or transmission system by way of one or more output elements of the actor. The motor receives signals from one or more sensors and/or from the electronic circuitry in the vehicle and/or from a memory. At least one coil spring and/or another energy storing element is or can be provided to guarantee that the torque transmitting system assumes a predetermined (e.g., disengaged) condition and/or that the transmission system is in a predetermined gear ratio when the actor is not in use to change the magnitude of torque being (or to be) transmitted by the torque transmitting system and/or the ratio of the transmission system.