公开(公告)号：EP1433933A3

公开(公告)日：2004-12-29

申请号：EP04006545.0

申请日：1997-06-09

申请人： Hitachi, Ltd.

发明人： Hanaoka, Hiroshi, c/o Hitachi Ltd. ,  Kuroda, Osamu, c/o Hitachi, Ltd. ,  Doi, Ryouta, Hitachi, Ltd. ,  Iizuka, Hidehiro, Hitachi, Ltd. ,  Ogawa, Toshio, c/o Hitachi, Ltd. ,  Yamashita, Hisao, c/o Hitachi Ltd. ,  Azuhata, Shigeru, c/o Hitachi Ltd. ,  Kitahara, Yuichi, Hitachi, Ltd. ,  Hiratsuka, Toshifumi, Hitachi, Ltd. ,  Okude, Kojiro ,  Shinotsuka, Norihiro, Hitachi, Ltd. ,  Manaka, Toshio, Hitachi, Ltd.

IPC分类号： F01N3/08 ,  F01N3/20 ,  F01N3/28 ,  F02D41/02 ,  B01D53/94

CPC分类号： F01N11/002 ,  B01D53/9422 ,  B01D53/9495 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2022 ,  B01D2255/2027 ,  B01D2255/2047 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/91 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/0878 ,  F01N13/009 ,  F01N2250/12 ,  F01N2430/06 ,  F01N2510/06 ,  F01N2570/04 ,  F01N2610/03 ,  F02D41/027 ,  F02D41/0275 ,  F02D41/1455 ,  F02D41/146 ,  F02D41/1462 ,  F02D41/1463 ,  F02D41/1465 ,  F02D2200/0806 ,  F02D2200/0814 ,  Y02A50/2324 ,  Y02T10/22 ,  Y02T10/47

摘要： An exhaust gas purification apparatus for use in an internal combustion engine (99) is disclosed which comprises an exhaust gas duct connected to said engine (99), through which the exhaust gas flows, and a catalyst (18) disposed in said exhaust gas duct, for adsorbing NOx under lean combustion conditions. A manifold catalyst (19) may be disposed in said exhaust gas duct after the engine (99) upstream of said catalyst (18), which has the functions of a three way catalyst and a combustion catalyst. The manifold catalyst (19) arises its working temperature in a short time after engine starting in order to allow the purification of hydrocarbons (HC) and carbon monoxide (CO) immediately after engine starting. Alternatively a three way catalyst or a combustion catalyst may be disposed in said exhaust gas duct at the upstream of said catalyst (18).

摘要翻译： 本发明涉及一种在排气净化装置用于在内燃机（99）包括连接到所述发动机（99），排气管道，通过将含有氮氧化物的排气气体通过，并在置于所述主催化剂（18） 在与废气接触排气管道，worin所述主催化剂（18）化学吸附并且在所述排气气体的存在下的NOx RETAIN当所述发动机（99）在稀操作模式操作和NOx保留在所述主催化剂（ 18）当所述发动机（99），具有丰富的或化学计量的空气 - 燃料比操作被减到N2在所述废气的存在。