The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 23, 2007
Filed:
Aug. 27, 2005
Volker Gärtner, Wurmberg, DE;
Armin Tonn, Roth, DE;
Alwin Becher, Zirndorf, DE;
Klaus Leipnitz, Eckental, DE;
Edgar Bothe, Peine, DE;
Volker Gärtner, Wurmberg, DE;
Armin Tonn, Roth, DE;
Alwin Becher, Zirndorf, DE;
Klaus Leipnitz, Eckental, DE;
Edgar Bothe, Peine, DE;
Volkswagen Aktiengesellschaft, Wolfsburg, DE;
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.