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. 21, 2009
Filed:
Nov. 22, 2006
Atsushi Ayabe, Nagoya, JP;
Toshio Sugimura, Nagoya, JP;
Ayumu Sagawa, Toyota, JP;
Takahiko Tsutsumi, Toyota, JP;
Hisashi Ishihara, Toyoake, JP;
Kazuhiro Iketomi, Nagoya, JP;
Yosuke Takaie, Toyota, JP;
Atsushi Ayabe, Nagoya, JP;
Toshio Sugimura, Nagoya, JP;
Ayumu Sagawa, Toyota, JP;
Takahiko Tsutsumi, Toyota, JP;
Hisashi Ishihara, Toyoake, JP;
Kazuhiro Iketomi, Nagoya, JP;
Yosuke Takaie, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
A shift control device of a vehicular automatic transmission that establishes a plurality of gear steps of different speed change ratios by selectively engaging a plurality of friction engagement devices ends the shift control by making an engagement end determination regarding an engagement-side friction engagement device if it has been determined continuously for a predetermined time that the input shaft rotation speed of the automatic transmission is in the vicinity of the synchronous rotation speed of the post-shift gear step. The predetermined time is set at a first time if the downshift is a power-on downshift due to a shift judgement in a power-on state, and is set at a second time that is shorter than the first time if the downshift is a power-off→on downshift selected in connection with a change to the power-on state during a power-off shift due to the shift judgment in a power-off state.