公开(公告)号：EP2378105A4

公开(公告)日：2012-10-17

申请号：EP10731341

申请日：2010-01-13

申请人： TOYOTA MOTOR CO LTD ,  AISAN IND

发明人： KOJIMA SUSUMU ,  SHIMIZU RIO ,  SUGIMOTO TOMOJIRO ,  MICHIKAWAUCHI RYO ,  KIKUTA HIKARU ,  ISHII KAZUNORI ,  TSUJINO MUTSUMI ,  AOKI TSUNEAKI ,  TAKEDA KEISO

IPC分类号： F02M37/00 ,  F02B43/10 ,  F02D19/02 ,  F02D45/00 ,  F02M21/02 ,  F02M25/08

CPC分类号： F02D41/0025 ,  F01N3/0814 ,  F01N2560/021 ,  F01N2570/18 ,  F02B2201/02 ,  F02D19/025 ,  F02D19/027 ,  F02D19/029 ,  F02D41/221 ,  F02D2041/1468 ,  F02M21/0206 ,  F02M21/0224 ,  F02M21/0278 ,  F02M21/0287 ,  F02M21/0293 ,  F02M25/0224 ,  F02M25/0227 ,  F02M25/028 ,  F02M25/0809 ,  F02M37/0029 ,  F02M37/10 ,  F02M2037/087 ,  F02M2200/18 ,  Y02T10/32 ,  Y02T10/40

公开(公告)号：EP0629771A3

公开(公告)日：1998-07-29

申请号：EP94108972

申请日：1994-06-10

申请人： TOYOTA MOTOR CO LTD

发明人： ITOU TAKAAKI ,  TANAKA HIROSHI ,  TAKEDA KEISO ,  OHNAKA HIDEMI ,  KUNITAKE KAZUHISA ,  TANAHASHI TOSHIO

IPC分类号： B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N3/22 ,  F01N3/24 ,  F01N13/02 ,  F02D41/02 ,  F02D41/04 ,  F02D41/14 ,  F02D43/00 ,  F02P5/15

CPC分类号： F01N3/222 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/20 ,  F01N3/22 ,  F01N13/009 ,  F01N2240/18 ,  F01N2250/12 ,  F01N2330/02 ,  F01N2570/12 ,  F02D41/0275 ,  Y02T10/22

摘要： An exhaust gas purification device comprising a three way catalyst (17), an oxidizing catalyst (20) and a NOx absorbent (23,24) which are arranged in this order in the exhaust passage. A rich air-fuel mixture is burned in the combustion chamber (3), and the exhaust gas discharged from the engine (1) is initially introduced into the three way catalyst (17). Secondary air is fed into the exhaust passage between the three way catalyst (17) and the oxidizing catalyst (20) so that the air-fuel ratio of the exhaust gas flowing into the oxidizing catalyst (20) and the NOx absorbent (23,24) becomes lean.