Method of operating a vehicle transmission

US6785599B2 · 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
• Marc Hauptmann · Turnhout, BE
• Klaus Henneberger · Laufenburg (Baden), DE
• Klaus Kupper · Bühl, DE

Key dates

• Filing date: Feb 3, 2003
• Grant date: Aug 31, 2004
• Expiry date: Feb 3, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/20104
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Specific shift positions of an electrically actuated vehicle transmission, such as first to fifth, neutral and reverse gears, are detected by monitoring one or more characteristic electrical variables, e.g., actuator currents, during a shift movement of the transmission and by correlating increased or decreased levels of current with the arrival at or passage through the specific shift positions.