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. 31, 1979
Filed:
Dec. 22, 1977
Applicant:
Inventors:
Tetsuomi Tamura, Toyota, JP;
Koichi Mizutani, Seto, JP;
Assignee:
Toyota Jidosha Kogyo Kabushiki Kaisha, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ; F02M / ;
U.S. Cl.
CPC ...
60278 ; 60293 ; 60305 ;
Abstract
An exhaust gas purifier for a four-stroke internal combustion engine has a plurality of cylinders consisting of cylinder groups, each of which has at least two cylinders, and the opening durations of the exhaust valves in any one group do not overlap. The exhaust passages of the cylinders of one of the cylinder groups are connected to the atmosphere via a common reed valve.