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:
Jun. 25, 1991
Filed:
Jul. 05, 1990
Heinz Stehle, Weissach, DE;
Thomas Wehr, Ditzingen, DE;
Joseph Petersmann, Wimsheim, DE;
Willi Seidel, Eberdingen-Hochdorf, DE;
Ludwig Hamm, Sindelfingen, DE;
Thomas Foeldi, Stuttgart, DE;
Gerhard Eschrich, Gerlingen, DE;
Ronald Schwamm, Gerlingen, DE;
Wolfgang Runge, Ravensburg, DE;
Wolf-Dieter Gruhle, Tettnang, DE;
Peter Wendel, Kressbronn, DE;
Dr. Ing. h.c.F. Porsche AG, Stuttgart, DE;
Abstract
In order to improve the shifting characteristics of an electrohydraulically controlled, automatically shifting transmission particularly during cornering and braking, the driving speed (v), the lateral acceleration (aq), and the time variation of the throttle valve position are sensed in addition to the throttle valve position (alpha) and the engine rotational speed (nmot). From the time variation of the throttle valve position, a signal can be derived for the prevention of an upshifting operation since a motor vehicle driver's foot moves away faster from the accelerator pedal when approaching a bend in the road than would be the case for the normal deceleration of the motor vehicle.