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:
Aug. 28, 2012
Filed:
May. 19, 2006
Atsushi Tabata, Okazaki, JP;
Yuji Inoue, Nisshin, JP;
Atsushi Kamada, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A control device is provided for a vehicle drive apparatus, which includes a differential mechanism and an electric motor provided in differential mechanism, which can be miniaturized in structure with improved fuel economy or enabling the suppression of occurrence in switching shocks. With a provision of a switching clutch Cor a switching brake B, a shifting mechanismis placed in either a continuously variable shifting state or a step variable shifting state. This enables the vehicle drive apparatus to have combined advantages in a fuel economy improving effect with a transmission, enabled to electrically change a gear ratio, and a high transmitting efficiency with a gear type power transmitting device enabled to mechanically transmit drive power. During a shifting of an automatic shifting portion, engaging control variable control meansalters a method of learning an engaging pressure. This allows a rotation speed Nof a transmitting member to achieve a given variation during the shifting, depending on a continuously variable shifting state and a non-continuously variable shifting state, for thereby providing a balance between an improvement in a feeling and a suppressing of shifting shocks.