Actuating apparatus for automated constituents of power trains in motor vehicles

US6003395A · kind A · utility

Assignee

• LuK Getriebe-Systeme GmbH · DE

Inventors

• Andreas Rogg · Hamburg, DE
• Andreas Deimel · Ingolstadt, DE

Key dates

• Filing date: Aug 6, 1997
• Grant date: Dec 21, 1999
• Expiry date: Aug 6, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/2003
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A power train for use in a motor vehicle has a prime mover (such as a combustion engine), an automated gearbox which transmits torque to the wheels of the vehicle, a friction clutch between the prime mover and the gearbox, a computerized control unit which receives signals from several sensors, and one or more actuators which operate the clutch and/or the gearbox in response to signals from the control unit. The actuator for selecting the gear ratio of the gearbox and for shifting the gearbox into and from selected gears employs two transmissions each of which has a worm gearing receiving torque from a discrete electric motor of the actuator and a spur gearing which transmits motion from the respective worm gearing to a mobile component of the gearbox. The connection between the worm and spur gearings in at least one of the transmissions can comprise a damper cooperating with one or more sensors serving to transmit signals to the control unit.