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:
Sep. 21, 1999
Filed:
Aug. 19, 1998
Chi-Thuan Cao, Korntal-Munchingen, DE;
Klemens Kronenberg, Oberriexingen, DE;
Marko Poljansek, Reutlingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention is directed to a system for determining the gear ratio changes in an automatic transmission in a vehicle having an accelerator pedal actuated by a driver of the vehicle. The system includes a first sensor for detecting the position (DK) of said accelerator pedal as a first variable and a second sensor for detecting at least one of the following as a second variable: the vehicle straight-line speed (V.sub.x), transmission output rpm and the motor rpm. An adaptation variable (BZ) is determined in an evaluation mode in dependence upon a comparison of a time-dependent change of the first variable to at least one threshold value (SW, SW1, SW2). A characteristic field receives the first and second variables as input variables. The characteristic field and the adaptation variable (BZ) are used to form a gear ratio change (SG) for the automatic transmission.