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:
Nov. 14, 1978
Filed:
Jun. 17, 1976
Applicant:
Inventor:
Yuhiko Kiyota, Nagaokakyo, JP;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ; F02M / ;
U.S. Cl.
CPC ...
1231 / ; 123127 ; 60276 ;
Abstract
A multicylinder engine comprising at least one first cylinder, a corresponding number of second cylinder, and a carburetor to supply a fuel-air mixture leaner than stoichiometric to all the first and second cylinders. When required by the driving range and other driving conditions, a rich mixture is supplied to the second cylinder to lower the air-fuel ratio in it for the purpose of exhaust emission purification, while the first cylinder is being supplied with the lean mixture.