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:
Jun. 22, 2010
Filed:
Nov. 21, 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
A shift control device of a vehicular automatic transmission, if during a first shift in a power-off state, a second shift judgment for a second shift that is a power-on downshift is made, performs a second shift control of lowering an input shaft rotation speed to a synchronous rotation speed of a post-second shift gear step through an engagement control of the friction engagement devices, and when the second shift is performed, performs a control of reducing a throttle valve opening degree of the engine to a predetermined degree that causes the engine to output a torque that is able to bring the input shaft rotation speed to a rotation speed that is higher than the synchronous rotation speed of the post-second shift gear step. The control device also executes a retardation control of retarding an ignition timing of the engine when the input shaft rotation speed is dropped through the second shift control.