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. 30, 2010
Filed:
Mar. 29, 2007
Yoshinori Maki, Anjo, JP;
Hitoshi Asano, Anjo, JP;
Masatake Ichikawa, Anjo, JP;
Hiroshi Tsutsui, Nishio, JP;
Yoshinori Maki, Anjo, JP;
Hitoshi Asano, Anjo, JP;
Masatake Ichikawa, Anjo, JP;
Hiroshi Tsutsui, Nishio, JP;
Aisin AW Co., Ltd., Aichi-Ken, JP;
Abstract
In clutch-to-clutch upshifting, the occurrence of inertia shock is suppressed while racing of the engine is prevented. Corresponding to a first sweep control in which an engaging-side pressure sweeps up toward a target hydraulic pressure P, a releasing-side hydraulic pressure Psweeps down as an initial control. When the releasing-side hydraulic pressure Pbecomes a minute torque capacity [fP(0)+P+P], a hold control, which has a very low gradient δP, is started so that the pressure is substantially held, and, after a rotation change is started, the pressure sweeps down with a low gradient δPuntil release.