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. 17, 2012
Filed:
May. 11, 2009
Markus Pfisterer, Puchheim, DE;
Arman Kara, Eching, DE;
Markus Pfisterer, Puchheim, DE;
Arman Kara, Eching, DE;
Beyerische Motoren Werke Aktiengesellschaft, Munich, DE;
Abstract
The method according to the invention for shift point control in automatic transmissions by means of an electronic control device, which receives a performance requirement value and the vehicle speed as input signals and triggers up-shifts and down-shifts, by means of a functional module. The functional module controls the shift point, by using characteristic shift curves stored in the control device as a function of the performance requirement value and the vehicle speed. When predetermined operating conditions apply, a speed range is defined below a defined vehicle speed, in which range an instantaneous down-shift is performed, which is independent of the currently applicable characteristic shift curve. As soon as the performance requirement value or an operating value proportional to the performance requirement value falls below a threshold, an up-shift subsequent to the down-shift is delayed by a first predetermined time period after the instantaneous down-shift.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile