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:
Oct. 24, 2006
Atsushi Ayabe, Nagoya, JP;
Toshio Sugimura, Nagoya, 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;
Takahiko Tsutsumi, Toyota, JP;
Hisashi Ishihara, Toyoake, JP;
Kazuhiro Iketomi, Nagoya, JP;
Yosuke Takaie, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
In a shift control device and a shift control method of an automatic transmission that establishes a plurality of gear steps of different speed change ratios by selectively engaging a plurality of friction engagement devices, one of a shift start time point and an inertia phase start time point is used as a reference time. In a power-off shift, the shift action is compulsorily ended when the elapsed time from the reference time exceeds a first time. In a power-on shift, the shift action is compulsorily ended when the elapsed time from the reference time exceeds a second time that is set shorter than the first time. If a switch from the power-off shift to the power-on shift occurs halfway through the power-off shift, the shift action is compulsorily ended when the elapsed time from the time point of the switch exceeds a predetermined time.