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. 30, 2013
Filed:
Nov. 11, 2010
Takenori Hashimoto, Tokyo, JP;
Atsushi Namba, Tokyo, JP;
Takenori Hashimoto, Tokyo, JP;
Atsushi Namba, Tokyo, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A clutch mechanism is provided between a drive wheel and an electric motor. In a high vehicle speed region, the electric motor is decoupled from the drive wheel to prevent the electric motor from over-speeding. In the high vehicle speed region, in which the clutch mechanism is switched to a disengaged condition, rotation speed control is executed on the electric motor when a state of charge falls below a predetermined lower limit value, and a motor rotation speed is maintained at a target rotation speed on a lower rotation side than an upper limit rotation speed. Further, the clutch mechanism is switched from the disengaged condition to a slip condition. Hence, a limited power generation torque is supplied to the electric motor, and thus the electric motor can be controlled to a regeneration condition while suppressing the motor rotation speed to or below the upper limit rotation speed.