公开(公告)号：US20140186220A1

公开(公告)日：2014-07-03

申请号：US14128176

申请日：2011-09-06

申请人： Kenji Sakurai ,  Toru Kidokoro ,  Yasuyuki Irisawa ,  Tuyoshi Obuchi

发明人： Kenji Sakurai ,  Toru Kidokoro ,  Yasuyuki Irisawa ,  Tuyoshi Obuchi

IPC分类号： F01N3/20

CPC分类号： F01N3/2053 ,  F01N3/0814 ,  F01N3/0885 ,  F01N3/101 ,  F01N3/2066 ,  F01N3/2073 ,  F01N11/00 ,  F01N13/009 ,  F01N2430/085 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/03 ,  F01N2900/16 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/47

摘要： In cases where an NOx selective reduction catalyst is provided at a location downstream of an NOx storage reduction catalyst, NOx purification performance in an exhaust gas purification apparatus as a whole is maintained, irrespective of deterioration of the NOx storage reduction catalyst. For this purpose, the reduction of NOx in the NOx storage reduction catalyst is promoted more when the degree of deterioration of the NOx storage reduction catalyst or the NOx selective reduction catalyst is low than when it is high, and the reduction of NOx in the NOx selective reduction catalyst is promoted more when the degree of deterioration of the NOx storage reduction catalyst or the NOx selective reduction catalyst is high than when it is low.

摘要翻译： 在NOx吸留还原催化剂的下游位置设置有NOx选择还原催化剂的情况下，与NOx吸留还原催化剂的劣化无关地维持排气净化装置的NOx净化性能。 为此，当NOx储存还原催化剂或NOx选择还原催化剂的劣化程度低于NOx时，NOx吸收还原催化剂中的NOx的还原更多，并且NOx的还原 当NOx存储还原催化剂或NO x选择还原催化剂的劣化程度高于低于低浓度催化剂时，选择还原催化剂被更多地促进。

公开(公告)号：US09297289B2

公开(公告)日：2016-03-29

申请号：US14128176

申请日：2011-09-06

申请人： Kenji Sakurai ,  Toru Kidokoro ,  Yasuyuki Irisawa ,  Tuyoshi Obuchi

发明人： Kenji Sakurai ,  Toru Kidokoro ,  Yasuyuki Irisawa ,  Tuyoshi Obuchi

IPC分类号： B01D50/00 ,  F01N3/00 ,  F01N3/20 ,  F01N3/08 ,  F01N11/00 ,  F01N3/10 ,  F01N13/00

CPC分类号： F01N3/2053 ,  F01N3/0814 ,  F01N3/0885 ,  F01N3/101 ,  F01N3/2066 ,  F01N3/2073 ,  F01N11/00 ,  F01N13/009 ,  F01N2430/085 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2610/03 ,  F01N2900/16 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/47

摘要： In cases where an NOx selective reduction catalyst is provided at a location downstream of an NOx storage reduction catalyst, NOx purification performance in an exhaust gas purification apparatus as a whole is maintained, irrespective of deterioration of the NOx storage reduction catalyst. For this purpose, the reduction of NOx in the NOx storage reduction catalyst is promoted more when the degree of deterioration of the NOx storage reduction catalyst or the NOx selective reduction catalyst is low than when it is high, and the reduction of NOx in the NOx selective reduction catalyst is promoted more when the degree of deterioration of the NOx storage reduction catalyst or the NOx selective reduction catalyst is high than when it is low.

摘要翻译： 在NOx吸留还原催化剂的下游位置设置有NOx选择还原催化剂的情况下，与NOx吸留还原催化剂的劣化无关地维持排气净化装置的NOx净化性能。 为此，当NOx储存还原催化剂或NOx选择还原催化剂的劣化程度低于NOx时，NOx吸收还原催化剂中的NOx的还原更多，并且NOx的还原 当NOx存储还原催化剂或NO x选择还原催化剂的劣化程度高于低于低浓度催化剂时，选择还原催化剂被更多地促进。