Method of operating a torque transfer system

US6510931B2 · kind B2 · utility

Assignee

• LuK Lamellen und Kupplungsbau Beteiligungs KG · DE

Inventors

• Reinhard Berger · Bühl, DE
• Martin Vornehm · Neu-Anspach, DE
• Stefan Winkelmann · Bühl, DE

Key dates

• Filing date: Dec 7, 2001
• Grant date: Jan 28, 2003
• Expiry date: Dec 7, 2021

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2061/283
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A torque transfer system, particularly an automated shift transmission of a motor vehicle, has a movable shifter element that is subject to a position-dependent force. The gear positions of the transmission correspond to minima of potential energy of the position-dependent force, so that the movable element will have a tendency to fall into the nearest one of the shift positions. To perform a gear shift, the movable shifter element is moved into the vicinity of the targeted gear position by means of a control device directing a shift actuator. When the movable shifter element has stopped moving within a given tolerance band of the targeted position, the control device generates a stall-releasing signal, e.g., a series of pulses of alternating polarity to overcome a holding force or holding torque of the movable element, so that the latter will seek a position of minimum potential energy and thus move towards the targeted gear-shift position.