公开(公告)号：EP3992448A1

公开(公告)日：2022-05-04

申请号：EP21204164.4

申请日：2021-10-22

申请人： MAZDA MOTOR CORPORATION

发明人： NISHIDA, Tomonori ,  KOJIMA, Yuji ,  FUJITA, Noriaki ,  YOSHIDA, Ken ,  KARIYA, Takashi ,  TOMINAGA, Takayuki ,  MATSUMOTO, Naoya ,  MATSUMURA, Yusaku ,  KODA, Yuki ,  NISHIHARA, Takuya ,  OHMURA, Hiroyuki ,  IMURA, Arashi ,  TANAKA, Fusatoshi ,  YAMADA, Takuya ,  UMESAKI, Shintaro

IPC分类号： F02M26/15 ,  F02M26/18 ,  F02M26/23 ,  F02M26/30 ,  F02M26/41 ,  F02F1/42

摘要： An exhaust gas recirculation system for a multi-cylinder engine is provided, which includes an exhaust manifold connected to a cylinder head, a catalyst connected to a downstream end of the exhaust manifold in terms of an exhaust gas flow, an EGR gas outlet provided downstream of the catalyst, an in-head EGR passage penetrating the cylinder head, and an EGR pipe extending from the EGR gas outlet and directly connected to an inlet of the in-head EGR passage to lead EGR gas thereto. The catalyst is disposed so that the exhaust gas flows therein from a first side to a second side in an engine cylinder lined-up direction. The EGR gas outlet is located on the second side with respect to the center of the engine in the cylinder lined-up direction, and the inlet of the in-head EGR passage is located in the first side with respect to the engine center.