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:
May. 26, 2015
Filed:
Mar. 02, 2012
Mario Steinborn, Friedrichshafen, DE;
Jochen Breuer, Tettnang, DE;
Christoph Ruechardt, Bodolz, DE;
Thomas Jaeger, Meckenbeuren, DE;
Roland Mair, Tettnang, DE;
Melchor Moro-oliveros, Riva del Garda, IT;
Mario Steinborn, Friedrichshafen, DE;
Jochen Breuer, Tettnang, DE;
Christoph Ruechardt, Bodolz, DE;
Thomas Jaeger, Meckenbeuren, DE;
Roland Mair, Tettnang, DE;
Melchor Moro-Oliveros, Riva del Garda, IT;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A method of controlling an automated transmission for motor vehicles with one or several pressure activated positioning cylinders (), via the assigned shift valves (), at least one main cut-off valve () which is positioned prior to the shift valves, and a control device for controlling the shift and main cut-off valves. The pressure requests, for the shifting, are determined and the respective main cut-off valves are triggered depending on the determined pressure requests. To enable a variable match of the supply pressure during transmission shifts, respective optimized pressures or pressure patterns are determined for certain shift scenarios which, for instance, consider a mass to be synchronized, the existence of a tooth-on-tooth position, or the like. Through this method, for instance, the load on shift elements, the shift timing, and the shift noise can be positively influenced.