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. 12, 2016
Filed:
Oct. 11, 2013
Mazda Motor Corporation, Hiroshima, JP;
Shuhei Tsujita, Hiroshima, JP;
Einosuke Suekuni, Higashihiroshima, JP;
Junji Umemura, Aki-gun, JP;
Yuki Nabetani, Hatsukaichi, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
Disclosed is an exhaust gas recirculation system for an engine (), wherein at least a downstream sub-region of a region of an exhaust passage () upstream of a turbine wheel () is divided into two sub-passages (R, R) by a partition wall () extending along an exhaust gas flow direction. A high-speed sub-passage (R) in the two sub-passages (R, R) is equipped with an openable-closable exhaust variable valve (). The exhaust variable valve () is configured to be controlled to open the high-speed sub-passage (R) when an engine speed is equal to or greater than a reference speed, and close the high-speed sub-passage (R) when the engine speed is less than the reference speed. An inlet () of an EGR passage () on the side of the exhaust passage () is opened to the high-speed sub-passage (R) at a position downstream of the exhaust variable valve ().