Motor vehicle with a gearbox and method for operating a motor vehicle

US6997075B2 · kind B2 · utility

Assignee

• LuK Lamellen und Kupplungsbau Beteiligungs KG · DE

Inventors

• Boris Serebrennikov · Laufenburg (Baden), DE
• Klaus Henneberger · Laufenburg (Baden), DE
• Martin Eckert · Metzingen, DE
• Frank Bast · Bühl, DE
• Reinhard Berger · Bühl, DE
• Martin Vornehm · Neu-Anspach, DE
• Stefan Winkelmann · Bühl, DE

Key dates

• Filing date: Apr 17, 2003
• Grant date: Feb 14, 2006
• Expiry date: Apr 17, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/19284
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In a motor vehicle transmission, gears representing different transmission ratios are engaged by applying a force to an actuator output element that couples a selected gear to a rotary shaft. A synchronizing device blocks the coupling of the gear to the shaft until at least an approximate synchronization of rpm-rates has been achieved. A synchronization threshold position corresponding to the blocked condition of the actuator element is stored in a memory of a controller device. The controller device periodically performs an automatic adaptation of the stored value for the synchronization threshold position.