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. 07, 2012
Filed:
Apr. 17, 2008
Masayoshi Hattori, Toyota, JP;
Tsukasa Abe, Gotenba, JP;
Masayoshi Hattori, Toyota, JP;
Tsukasa Abe, Gotenba, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A stop-time target phase setting unit sets a target phase CAr for an intake valve to a target phase, which is used when an engine is stopped, in response to issuance of an engine stop command. An engine stop control unit generates a series of control commands for an engine stop process in response to issuance of the engine stop command. A motoring command unit generates a first MG control command for rotating the engine using a motor for a predetermined period Tm that is counted by a timer in response to issuance of the engine stop command. Thus, the engine idles even after fuel combustion stops. In this way, the period in which the valve phase can be changed by a VVT mechanism is increased. As a result, a valve phase when the engine stops is reliably brought to the target phase that is suitable for next engine starting.