Method for determining a starting gear step

US6412361B1 · kind B1 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Andreas Wolf · Munich, DE
• Matthias Winkel · Weingarten, DE
• Christoph Rüchardt · Bodolz, DE
• Bertram Wengert · Markdorf, DE
• Jürgen Müller · Bayreuth, DE

Key dates

• Filing date: Mar 1, 2001
• Grant date: Jul 2, 2002
• Expiry date: Mar 1, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/1926
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a method for determining a starting gear step for a vehicle with a multi-speed stepped variable transmission, wherein the starting gear step is determined by an electronic control device which is dependent on the vehicle mass; and a second variable which depends on the vehicle state is determined from the vehicle mass, the current traction and the current vehicle acceleration resulting therefrom.