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:
Aug. 01, 1978
Filed:
Oct. 31, 1975
Applicant:
Inventor:
Koyo Nakamura, Yokosuka, JP;
Assignee:
Nissan Motor Company, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ; F02H / ; F02M / ;
U.S. Cl.
CPC ...
1231 / ; 1231 / ; 1231 / ; 1231 / ;
Abstract
Addition air is admitted into a fuel passage of a carburetor through an open electromagnetic valve which is electronically controlled between the open and closed position in accordance with an oxygen sensor signal indicating the oxygen concentration in the engine exhaust gases. The amount of the additional air being supplied to the fuel passage is reduced at the rate proportional to the vacuum created by operation of the engine in a venturi section, choke section and/or intake manifold.