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:
Jul. 24, 2007
Filed:
Aug. 18, 2003
Christoph Pelchen, Tettnang, DE;
Detlef Baasch, Friedrichshafen, DE;
Barbara Schmohl, Friedrichshafen, DE;
Ünal Gazyakan, Friedrichshafen, DE;
Christoph Pelchen, Tettnang, DE;
Detlef Baasch, Friedrichshafen, DE;
Barbara Schmohl, Friedrichshafen, DE;
Ünal Gazyakan, Friedrichshafen, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A method for controlling a drivetrain () in a motor vehicle is disclosed, in particular in an off-road vehicle with a drive unit (), a multi-group transmission () and an output. The multi-group transmission () comprises at least an automatic gearbox () and a subsequent range transfer box () which may be switched by means of switching elements (). On changing the ratio in the range transfer box (), a synchronisation of the switching element (or), for switching in the range transfer box (), is carried out by means of a controller of switching elements in the automatic gearbox ().