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:
Apr. 22, 1980
Filed:
Mar. 17, 1977
Applicant:
Inventors:
Yutaka Hasegawa, Toyota, JP;
Koichi Hirakata, Toyota, JP;
Assignee:
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N / ;
U.S. Cl.
CPC ...
60305 ; 1231 / ; 123D / ;
Abstract
The apparatus according to the present invention includes means for conducting secondary air into the exhaust lines of a multi-cylinder internal combustion engine, which conducts the secondary air into exhaust passages for one or more of the cylinders, and means for conducting a requisite amount of atmospheric air into the intake lines of the all or a part of the cylinders being available for said secondary air conduction, in response to an abrupt change of the negative pressure in the intake pipe through a mixture control valve.