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:
Sep. 29, 2015
Filed:
Mar. 18, 2013
Applicant:
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;
Inventor:
Kentaro Mikawa, Isesaki, JP;
Assignee:
HITACHI AUTOMOTIVE SYSTEMS, LTD., Hitachinaka-Shi, Ibaraki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 1/34 (2006.01); F02D 13/00 (2006.01); F02D 41/04 (2006.01); F02D 41/06 (2006.01); F02N 19/00 (2010.01); F02D 35/00 (2006.01); F02D 41/00 (2006.01);
U.S. Cl.
CPC ...
F01L 1/34 (2013.01); F02D 13/00 (2013.01); F02D 41/042 (2013.01); F02D 41/062 (2013.01); F02N 19/004 (2013.01); F01L 2800/01 (2013.01); F01L 2820/032 (2013.01); F02D 35/0007 (2013.01); F02D 2041/001 (2013.01);
Abstract
A control unit for a variable valve timing mechanism for changing a cam phase by an actuator corrects the operation amount of the actuator immediately after an engine is started based on at least an engine rotation angle and a cam phase angle in an engine stop state.