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:
Feb. 10, 2004
Filed:
Feb. 01, 2002
Applicant:
Inventors:
Shinichi Takemura, Yokohama, JP;
Shunichi Aoyama, Kanagawa, JP;
Tsuneyasu Nohara, Kanagawa, JP;
Takanobu Sugiyama, Yokohama, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05D 1/00 ; F02D 3/302 ; F02D 1/302 ; F02D 4/118 ;
U.S. Cl.
CPC ...
G05D 1/00 ; F02D 3/302 ; F02D 1/302 ; F02D 4/118 ;
Abstract
In an engine capable of continuously controlling an intake air quantity by varying an intake valve operating characteristic, an intake valve lift is sensed as well as an engine speed. Then, an intake air quantity is calculated in accordance with the engine speed and intake valve lift when an engine operating point is in a very low lift state.