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:
Nov. 16, 1993
Filed:
Jul. 14, 1992
Applicant:
Inventor:
Norbert Ramm, Braunschweig, DE;
Assignee:
Volkswagen AG, Postfach, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16H / ; B60K / ;
U.S. Cl.
CPC ...
74856 ; 74858 ; 3644241 ;
Abstract
The specification discloses a method for controlling shifting parameters of an automatic transmission having a planetary gear arrangement including a sun gear, planet gears and a ring gear, where the mechanical linkage of any two of these components represents a mechanical gear ratio. To obtain exact control of shifting, the speed variations of the sun gear are measured and these measured values are used for precise determination of the coupling point or of the duration of shifting and/or for engine management.