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:
Jul. 21, 2015
Filed:
May. 15, 2014
Honda Motor Co., Ltd., Tokyo, JP;
Yutaka Tamagawa, Saitama, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
A hybrid vehicle which runs on power from at least one of an electric motor and an engine includes a transmission ratio changing unit for changing a ratio of electrical transmission to mechanical transmission of an output of the engine, an engaging/disengaging control unit for releasing a clutch when the hybrid vehicle is shifted from a drive mode in which at least the engine works as a drive source to a series drive mode, and a required output calculation unit for calculating a required output based on an accelerator pedal opening and a running speed. When the required output exceeds a sum of an output of the electric motor which is driven by electric power supplied from the battery and the output of the engine while the hybrid vehicle is running on the drive mode in which at least the engine works as a drive source with the clutch engaged, the transmission ratio changing unit increases the ratio of electrical transmission to mechanical transmission of the output of the engine, and the engaging/disengaging control unit releases the clutch at a time point when the mechanically-transmitted output of the engine becomes 0, with the clutch engaged. Consequently, when the hybrid vehicle is shifted from the drive mode in which at least the engine works as a drive source to the series drive mode in which the electric motor works as a drive source, the power transmission engaging/disengaging unit can be released while satisfying the required output.