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. 25, 2017
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 with positioning cylinders () controlled by shift valves or venting valves (). At least one cut-off valve () is positioned in front of the shift or venting valves and a control device controls the valves while pressure pipes, which follow the cut-off valve (), are connected with one another following the cut-off valve (). Due to the fact that the cut-off valve (), for reasons of design simplicity and cost, is generally designed as a simple 2/2 way valve which only allows pressure increase but not pressure reduction, the method provides control of the shift valves or ventilation or venting valves (), of a non activated positioning cylinder (), so that the pressure pipe system is connected with an outflow pipe () for a pressure reduction in the pressure pipe system ().