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:
Nov. 26, 2002
Filed:
Jun. 25, 2001
Applicant:
Inventors:
Hirokazu Shimizu, Atsugi, JP;
Isamu Iizuka, Atsugi, JP;
Assignee:
Unisia Jecs Corporation, Kanagawa_Ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F10L 1/34 ;
U.S. Cl.
CPC ...
F10L 1/34 ;
Abstract
The reference valve timing of an intake valve and an exhaust valve is set based on an engine load detected and an engine rotation speed detected. An engine start and an engine idling condition are detected. The valve timing of the intake valve and the exhaust valve is controlled, while maintaining valve overlap amounts to be substantially the same, so that a valve overlap center becomes at an advance side from an exhaust top dead center, with respect to the reference valve timing, at the engine start and in the idling condition during a predetermined period of time after the engine start.