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:
Jan. 27, 2004
Filed:
Apr. 03, 2002
Friedrich Graf, Sinzing, DE;
Tibor Kiss, Regensburg, DE;
Martin Lachmayr, Regensburg, DE;
Bernd Last, Donaustauf, DE;
Stefan Lauer, Pettendorf-Kneiting, DE;
Martin Manz, Regensburg, DE;
Stephan Pindl, Bad Abbach, DE;
Tanja Roy, Holzheim am Forst, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method for controlling an automatic transmission in a drive train of a motor vehicle having a transmission controller selecting and shifting gears of the transmission includes determining a new gear by reference to gear shift characteristic curves and generating a gear shift instruction as soon as a working point of the drive train exceeds a gear shift characteristic curve. The transmission controller determines a new gear that is expected to be engaged shortly. If the new gear differs from the current gear, an initial phase of the gear shift is carried out and the gear shift is completed as soon as the gear shift instruction has been generated. The initial phase is carried out as soon as the working point drops below a predefined distance from the gear shift characteristic curve.