公开(公告)号：EP2172627A4

公开(公告)日：2013-06-19

申请号：EP08776804

申请日：2008-07-04

申请人： HINO MOTORS LTD ,  TOYOTA MOTOR CO LTD

发明人： YABE MASAHIKO ,  YOKOTA HARUYUKI ,  SHIMIZU TAKAHARU ,  NINOMIYA HIROYUKI ,  SATO SHINYA ,  HAYASHI TAKAHIKO ,  TOSHIOKA SHUNSUKE ,  WATANABE SATOSHI ,  ODA TOMIHISA ,  TANAI YUTAKA

IPC分类号： F01N3/08 ,  B01D53/94 ,  F01N3/02 ,  F01N3/10 ,  F01N3/24 ,  F01N3/28 ,  F01N9/00

CPC分类号： F01N3/2066 ,  B01D53/9418 ,  B01D53/9431 ,  B01D53/944 ,  B01D2251/2067 ,  B01D2251/208 ,  B01D2258/012 ,  F01N3/0814 ,  F01N3/103 ,  F01N9/00 ,  F01N13/009 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/03 ,  F01N2900/1404 ,  F01N2900/1602 ,  Y02A50/2344 ,  Y02T10/24 ,  Y02T10/47

摘要： The invention has an object of exerting favorable NO x reducing effects even at an exhaust temperature lower than in the prior art without trouble, e.g., at startup after long-term engine rest and is directed to an exhaust emission control device wherein a selective reduction catalyst 5 capable of selectively reacting NO x with ammonia even in the presence of oxygen is incorporated in an exhaust pipe 4, urea water 6 as reducing agent being added in the pipe 4 upstream of the reduction catalyst 5 to depurate NO x through reduction. It has an oxidation catalyst 9 arranged in the pipe 4 upstream of an added position of the urea water 6, the oxidation catalyst 9 having a feature of physically adsorbing NO x in the exhaust gas at a temperature lower than a lower active limit temperature of the reduction catalyst 5 and discharging the adsorbed NO x at a temperature higher than a lower active limit temperature of the oxidation catalyst 9, and means (a fuel injection device 14) for adding fuel into the exhaust gas 3 upstream of the oxidation catalyst, start of the fuel addition by the fuel addition means being refrained until exhaust temperature on an inlet side of the reduction catalyst 5 is increased to a preset temperature comparable with the lower active limit temperature of the oxidation catalyst 9.

公开(公告)号：EP2787185A4

公开(公告)日：2015-10-14

申请号：EP12853074

申请日：2012-11-28

申请人： HINO MOTORS LTD

发明人： YOKOTA HARUYUKI ,  SHIMIZU TAKAHARU ,  SHIRATORI TOMOAKI

IPC分类号： F01N3/08 ,  B01D53/94 ,  F01N3/18

CPC分类号： F01N3/208 ,  F01N11/00 ,  F01N2550/05 ,  F01N2610/02 ,  F01N2610/144 ,  F01N2610/146 ,  F01N2900/1808 ,  Y02T10/24 ,  Y02T10/47