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. 12, 2011
Filed:
Sep. 09, 2008
Josef Bader, Friedrichshafen, DE;
Andreas Graf, Stockach-Wahlwies, DE;
Martin Miller, Immenstaad, DE;
Mario Steinborn, Friedrichshafen, DE;
Thomas Hafen, Salem, DE;
Josef Bader, Friedrichshafen, DE;
Andreas Graf, Stockach-Wahlwies, DE;
Martin Miller, Immenstaad, DE;
Mario Steinborn, Friedrichshafen, DE;
Thomas Hafen, Salem, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A method for shifting an automated transmission situated in a drive train of a motor vehicle between an engine and a drive axle and having at least one multi-speed main transmission and a two-speed range change group rear-mounted thereon. The main transmission has at least one counter shaft with a transmission brake. A clutch engages the prime mover and the main transmission and the range change group is shifted via unsynchronized dog clutches which are combined in pairs in a common shift set and have two shift positions and one neutral position such that, during a range change gear shift both in the main transmission and the range change group a change between two ratio stages occurs. A range change up-shift includes synchronizing the input shaft and the target gear utilizing the transmission brake and passively synchronizing the dog shifted transmission parts by the edge beveling of the concerned dog clutches.