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. 05, 2012
Filed:
May. 18, 2007
Ryoji Mizutani, Nishikamo-gun, JP;
Michitaka Tsuchida, Susono, JP;
Yasuaki Tahara, Nagoya, JP;
Tomohiro Fukushima, Kariya, JP;
Masafumi Sakuma, Chiryu, JP;
Ryoji Mizutani, Nishikamo-gun, JP;
Michitaka Tsuchida, Susono, JP;
Yasuaki Tahara, Nagoya, JP;
Tomohiro Fukushima, Kariya, JP;
Masafumi Sakuma, Chiryu, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Aisin Seiki Kabushiki Kaisha, Kariya-Shi, JP;
Abstract
Front left and right wheel units are driven by an engine and a motor generator. Rear left and right wheel units are independently driven by in-wheel motor type motor generators. The motor generator and the motor generator are configured to have different rated outputs, respectively, and be subjected to different speed reduction ratios, respectively, between the motor generators and their respectively associated drive wheel units, and thus have characteristics, respectively, in efficiency with respect to torque and vehicular speed, that exhibit high efficiency in mutually different output ranges, respectively. When a mileage oriented mode is selected as a traveling mode, an ECU determines how a drive torque should be allocated between the motor generators, as based on the motors' required drive torque and vehicular speed and on each motor generator's characteristic in efficiency, to maximize the motor generators' total efficiency.