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. 22, 2011
Filed:
Sep. 24, 2008
Tomomasa Ikeda, Sagamihara, JP;
Hiroki Kawakami, Fuji, JP;
Tomomasa Ikeda, Sagamihara, JP;
Hiroki Kawakami, Fuji, JP;
Jatco Ltd, Fuji-shi, JP;
Abstract
An automatic transmission calculates a current thermal load state of the frictional element, predicts (S), prior to the start of the shift, a heat generation amount of the frictional element during the shift, predicts (S, S) a thermal load state of the frictional element upon shift completion on the basis of the current thermal load state and the predicted heat generation amount, and when the predicted thermal load state upon shift completion is inside a predetermined region, either performs (S, S) the shift after modifying a shift mode such that the heat generation amount of the frictional element is smaller than that of a case in which the predicted thermal load state upon shift completion is outside the predetermined region, or prohibits (S) the shift, wherein the predetermined region is set at a different region depending on whether the shift is an upshift or a downshift.