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. 08, 2016
Filed:
Jun. 21, 2012
Toru Uenishi, Susono, JP;
Kohei Yoshida, Gotenba, JP;
Mikio Inoue, Susono, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
In an engine, an exhaust purification catalyst () and a hydrocarbon feed valve () are arranged in an engine exhaust passage, and, a low pressure exhaust gas recirculation system (LPL) which makes exhaust gas downstream of the exhaust purification catalyst () recirculate is provided. If hydrocarbons are injected from the hydrocarbon feed valve (), a carbon dioxide which is generated at the exhaust purification catalyst () is recirculated, and the air-fuel ratio of the exhaust gas which flows into the exhaust purification catalyst () temporarily drops. Hydrocarbons are injected from the hydrocarbon feed valve () in synchronization with this temporary drop in the air-fuel ratio.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile