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:
Mar. 13, 2007
Filed:
Jun. 23, 2004
Applicant:
Kenichi Machida, Atsugi, JP;
Inventor:
Kenichi Machida, Atsugi, JP;
Assignee:
Hitachi Unisia Automotive, Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
When any one of a plurality of variable valve characteristic mechanisms which vary different operating characteristics of an intake valve is failed, a limit which is capable of satisfying predetermined conditions for a change in opening timing of the intake valve at the time when the other operating characteristic is varied by the normally operating variable valve characteristic mechanism, is set and the operating characteristics of the intake valve are controlled while limiting the intake valve opening timing by the limit, by the normally operating variable valve characteristic mechanism.