Method for operating an automatic gearbox on a motor vehicle

US7029421B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Markus Henneken · Kreßbronn, DE
• Friedemann Jauch · Meckenbeuren, DE
• Franz Schuler · Kreßbronn, DE
• Thomas Mauz · Kreßbronn, DE
• Michael Kiefer · Rochester, US

Key dates

• Filing date: May 18, 2002
• Grant date: Apr 18, 2006
• Expiry date: Jun 15, 2022

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2059/0239
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A method is described for operating an automatic transmission in which a command for changing a current ratio of the automatic transmission is generated when achieving preset operating states of the vehicle automatically or by manual input in a manual shifting mode, the activated manual shifting mode being preferred to an automatic shifting mode. The manual shifting mode is quit when a current vehicle speed is less than a threshold value, or when a longitudinal acceleration of the vehicle is within a defined range, a lateral acceleration is less than a threshold value and a driver type evaluation counter is less than a limiting value.