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, 2004
Filed:
Nov. 05, 2002
Voith Turbo GmbH & Co. KG, Heidenheim, DE;
Abstract
The invention relates to a method for early recognition of abnormal occurrences in the operation of automatic or automated gearboxes wherein at least one variable A directly or indirectly characterizing the strain on elements which are to be coupled to each other in a non-positive fit is continuously determined after an n-th shift at least until a synchronous rev speed is reached or during a maximum shift period T ; wherein the variable A characterizing the strain on the elements that are to be coupled is mathematically combined with the time, or if several variables A Exist, said variables are mathematically combined with each other and the product of said combination is added up in the form of a variable W ; wherein the product thereof is compared with a first pre-definable or defined threshold value W Which, if exceeded, defines a state from which damage can be deduced and the shift action is aborted.