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:
Feb. 05, 2013
Filed:
Feb. 28, 2011
Junichi Inoue, Toyota, JP;
Hitoshi Matsunaga, Anjo, JP;
Yoshio Hasegawa, Chiryu, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A control device of a vehicle drive-train system including an engine, an electronic throttle valve, an automatic transmission having a manual shift mode, a torque converter provided between the automatic transmission and the engine, and a lock-up clutch operable to directly connect an input member and an output member of the torque converter with each other includes a blipping control device that performs blipping control for temporarily increasing the output rotational speed of the engine by of the electronic throttle valve, when a power-off downshift is performed while the automatic transmission is in the manual shift mode; and a lock-up control device that engages or partially engages the lock-up clutch, based on a difference between a rotational speed of the output member of the torque converter and a rotational speed of the input member thereof, which the difference is reduced after the blipping control is started.