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. 19, 2013
Filed:
Sep. 26, 2008
Tooru Matsubara, Toyota, JP;
Kenta Kumazaki, Toyota, JP;
Atsushi Tabata, Okazaki, JP;
Masakazu Kaifuku, Okazaki, JP;
Tooru Matsubara, Toyota, JP;
Kenta Kumazaki, Toyota, JP;
Atsushi Tabata, Okazaki, JP;
Masakazu Kaifuku, Okazaki, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A vehicle power transmission system has a first electric motor, a differential section, a power interruption element forming part of a power transmission path, a second electric motor connected to a power transmission path, and a control device that maintains the output rotational speed of the differential section at a predetermined constant value or at a value within a predetermined range until the engagement of the power interruption element is completed, so as to control a rotational speed of a primary power source by the first electric motor during the period when the state of the vehicle power transmission system is being switched front a non-drive mode to a drive mode.