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:
Jul. 01, 1980
Filed:
Jul. 28, 1978
Applicant:
Inventors:
Yukio Miyamori, Yokohama, JP;
Kenji Masaki, Yokohama, JP;
Assignee:
Nissan Motor Company, Limited, Yokohama, JP;
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
60274 ; 60277 ; 60284 ; 60285 ; 60286 ; 60289 ;
Abstract
The temperature of an exhaust gas purifying device is maintained within an optimum range by enriching an air-fuel mixture for the engine, retarding the ignition timing of the engine, supplying secondary air into engine exhaust gases fed to the purifying device and producing a spark therein when the temperature of the purifying device is below the minimum of the optimum range and by diluting the air-fuel mixture, advancing the engine ignition timing to a normal value, stopping supply of the secondary air and production of the spark when the temperature of the purifying device is higher than the maximum of the optimum range.