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. 03, 2014
Filed:
Jan. 28, 2011
Masashi Hayashi, Okazaki, JP;
Masashi Hayashi, Okazaki, JP;
Denso Corporation, Kariya, JP;
Abstract
A valve timing adjuster adjusts timing of opening and closing an intake valve or an exhaust valve by changing a phase between a drive shaft and a driven shaft. The valve timing adjuster includes a housing, a vane rotor, an urging member, a regulating member, and a control unit. The control unit controls rotation of an electric motor that rotates the drive shaft. When an internal combustion engine stops in a state, where the regulating member is positioned out of a bore, the control unit restarts the engine by controlling the electric motor in the following manner. Firstly, the motor is controlled to rotate at a first rotational speed, which is a relatively high speed and subsequently, the motor is quickly changed to rotate at a second rotational speed, which is a relatively low speed.