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. 12, 1978
Filed:
Aug. 11, 1977
Applicant:
Inventor:
Junichiro Matsumoto, Yokosuka, JP;
Assignee:
Nissan Motor Company, Limited, Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ; F02D / ;
U.S. Cl.
CPC ...
1231 / ; 123 / ; 123 / ; 123 / ;
Abstract
In a variable displacement internal combustion engine, a pair of cylinder groups are alternately switched into deactivation for fuel economy when reduced power output can operate the vehicle adequately at an appropriate timing detected when engine output power is at maximum or minimum so that harmful effect on engine performance is minimized during switching periods.