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:
Apr. 15, 2014
Filed:
Mar. 03, 2008
Hiroyuki Shibata, Susono, JP;
Tooru Matsubara, Toyota, JP;
Atsushi Tabata, Okazaki, JP;
Masakazu Kaifuku, Okazaki, JP;
Hidenori Kato, Nishio, JP;
Hiroyuki Shibata, Susono, JP;
Tooru Matsubara, Toyota, JP;
Atsushi Tabata, Okazaki, JP;
Masakazu Kaifuku, Okazaki, JP;
Hidenori Kato, Nishio, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A control device for a vehicular drive system having (i) an engine, (ii) an electrically controlled differential portion operative to control an operating state of an electric motor connected to a rotary element of a differential mechanism for power-transmissive state for thereby controlling a differential state between a rotation speed of an input shaft connected to the engine, and a rotation speed of an output shaft, and (iii) a shifting portion forming a part of a power-transmitting mechanism between the electrically controlled differential portion and drive wheels, the control device including high-speed rotation preventing means for preventing high-speed rotations of each rotary elements of both the differential mechanism and the shifting portion, when a drop occurs or drop occurrence is predicted, in a supplied hydraulic pressure applied to a hydraulically operated frictional engaging device of the shifting portion, to a level less than a given value, wherein the high-speed rotation preventing means reduces torque or rotation speed of an input shaft of the shifting portion by controlling the engine or the electric motor.