Method and device for controlling a motor vehicle drive train

US7285074B2 · kind B2 · utility

Assignee

• VOLKSWAGEN AKTIENGESELLSCHAFT · DE

Inventors

• Volker Gärtner · Wurmberg, DE
• Armin Tonn · Roth, DE
• Alwin Becher · Zirndorf, DE
• Klaus Leipnitz · Eckental, DE
• Edgar Bothe · Peine, DE

Key dates

• Filing date: Aug 27, 2005
• Grant date: Oct 23, 2007
• Expiry date: Oct 4, 2025

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S477/907
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method and a device for controlling a motor vehicle drive train determine the direction of rotation of the drive train by evaluating sensor signals of a first sensor unit on the output side of the drive train. The first sensor unit includes a sensor wheel fastened to a rotatable component on the output side of the drive train and two rotational speed sensors which are fixed with respect to a housing and are placed circumferentially next to one another. In order to speed up the determination of the direction of rotation, the sensor signal of a second sensor unit on the input side of the drive train is evaluated. The second sensor unit includes a sensor wheel that is fastened to a rotatable component on the input side of the drive train and a rotational speed sensor that is fixed with respect to the housing.