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:
Oct. 09, 1979
Filed:
Sep. 06, 1977
Hironori Bessho, Susono, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Aichi, JP;
Abstract
Disclosed is an internal combustion engine provided with an exhaust gas recirculation system for recirculating exhaust gas from at least one but not all of the combustion chambers into an intake manifold. This internal combustion engine is also provided with an air injection system for introducing an appropriate amount of secondary air necessary for maintaining an effective exhaust gas recirculation operation. Means are provided for introducing an excessive amount of secondary air into the exhaust system at positions located near the combustion chambers including the chamber from which exhaust gas is recirculated, when the engine is operating under a warming-up condition. Accordingly, a catalytic converter located downstream of the exhaust manifold is rapidly activated just after the starting of the cold engine for oxidizing CO and HC components in the exhaust manifold.