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:
Dec. 21, 1982
Filed:
Dec. 10, 1980
Applicant:
Inventors:
Saburo Tsutsumi, Yokohama, JP;
Yasuhiko Nakagawa, Kamakura, JP;
Assignee:
Nissan Motor Company, Limited, Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
1231 / ; 123 901 ;
Abstract
An internal combustion engine is disclosed which includes a first cylinder unit always active and a second cylinder unit inactive when the engine load is below a given value. Means is provided for operating the intake and exhaust valve means associated with the first cylinder unit with relatively small valve overlap and operating the intake and exhaust valve means associated with the second cylinder unit with relatively large valve overlap.