公开(公告)号：US20230203976A1

公开(公告)日：2023-06-29

申请号：US17562463

申请日：2021-12-27

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Rahul MITAL ,  Jianwen LI ,  Eric Darvin Thomas

IPC分类号： F01N3/20 ,  F01N3/021

CPC分类号： F01N3/2066 ,  F01N3/021 ,  F01N2570/14 ,  F01N2570/18

摘要： An exhaust system includes a selective catalytic reduction (SCR) catalyst, a diesel oxidation catalyst, and an ammonia slip catalyst. The SCR catalyst is configured to reduce nitrogen oxide in exhaust gas produced by a diesel engine. The diesel oxidation catalyst is configured to reduce particulate matter, hydrocarbon, and carbon monoxide in the exhaust gas. The diesel oxidation catalyst is disposed downstream of the first SCR catalyst. The ammonia slip catalyst is configured to reduce ammonia in the exhaust gas. The ammonia slip catalyst is disposed downstream of the first SCR catalyst and upstream of the first diesel oxidation catalyst.

公开(公告)号：US20240066468A1

公开(公告)日：2024-02-29

申请号：US18239850

申请日：2023-08-30

申请人： Johnson Matthey Public Limited Company ,  GM Global Technology Operations LLC

发明人： Ceren AYDIN ,  Patrick BANNON ,  Penelope MARKATOU ,  Dennis MURRAY ,  Rahul MITAL ,  Eric Darvin THOMAS

IPC分类号： B01D53/94 ,  F01N3/20

CPC分类号： B01D53/9418 ,  B01D53/9495 ,  F01N3/208 ,  B01D2255/1023 ,  B01D2255/50

摘要： Methods and systems related to an exhaust gas treatment system including, in order:



(i) a first means for injecting a nitrogenous reductant;
(ii) a first selective catalytic reduction (SCR) catalyst;
(iii) an ammonia slip catalyst (ASC); and
(iv) a second selective catalytic reduction (SCR) catalyst,

wherein the ASC comprises an SCR catalyst and a supported palladium (Pd) component.

公开(公告)号：US20180078912A1

公开(公告)日：2018-03-22

申请号：US15267287

申请日：2016-09-16

申请人： GM Global Technology Operations LLC

发明人： Anil YADAV ,  Jianwen LI ,  Calvin K. KOCH ,  Rahul MITAL

IPC分类号： B01F7/00 ,  B01F3/04 ,  F01N3/28

CPC分类号： B01F7/00425 ,  B01D53/90 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/944 ,  B01D53/9477 ,  B01D2251/2067 ,  B01D2251/208 ,  B01F3/04021 ,  B01F3/04028 ,  B01F5/0451 ,  B01F5/0617 ,  B01F7/00633 ,  B01F2005/0636 ,  B01F2005/0637 ,  F01N3/021 ,  F01N3/035 ,  F01N3/0842 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/2892 ,  F01N13/009 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/03 ,  Y02A50/2325 ,  Y02T10/24

摘要： An assembly for mixing liquid within a gas flow includes a hollow conduit that is configured for containing a flow of gas and liquid droplets. The assembly includes a hollow conduit having an inner wall and configured for containing a flow of gas and liquid droplets. A first plurality of spaced blades is disposed in the conduit in a first plane. A second plurality of spaced blades are disposed in the conduit in a second plane disposed downstream of the first plane, the second plurality of spaced blades being circumferentially offset from the first plurality of spaced blades. A third plurality of spaced blades are disposed in the conduit in a third plane disposed downstream of the second plane, the third plurality of spaced blades being circumferentially offset from the second plurality of spaced blades.

公开(公告)号：US20160158714A1

公开(公告)日：2016-06-09

申请号：US14560466

申请日：2014-12-04

申请人： GM Global Technology Operations LLC

发明人： Jianwen LI ,  Chijou WANG ,  Rahul MITAL ,  Luciano Nunziato DI PERNA ,  James B. RODGERS

IPC分类号： B01F5/06 ,  F01N13/00 ,  B01F3/04 ,  F01N3/20

CPC分类号： B01F5/0602 ,  B01F3/04007 ,  B01F3/04049 ,  B01F5/0268 ,  B01F5/0473 ,  B01F5/0647 ,  F01N3/103 ,  F01N3/206 ,  F01N3/2066 ,  F01N3/2892 ,  F01N13/009 ,  F01N13/0097 ,  F01N2240/20 ,  F01N2610/02 ,  F01N2610/1453 ,  Y02T10/24

摘要： An exhaust system is provided for a diesel engine, including an exhaust passage adapted to be attached to the diesel engine. A diesel oxidation catalyst is provided in the exhaust passage along with a selective catalyst reduction device disposed downstream from the diesel oxidation catalyst. A diesel exhaust fluid mixing system includes a diesel exhaust fluid injection nozzle and a mixing device defining a single inlet opening and a single outlet opening connected to one another by a partial spiral flow passage. The diesel exhaust fluid injection nozzle injects diesel exhaust fluid directly into the inlet opening of the partial spiral flow passage.

摘要翻译： 为柴油发动机提供排气系统，其包括适于附接到柴油发动机的排气通道。 柴油氧化催化剂与设置在柴油机氧化催化剂下游的选择性催化剂还原装置一起设置在排气通道中。 柴油机排气流体混合系统包括柴油机排气流体注入喷嘴和混合装置，该混合装置限定通过部分螺旋流动通道彼此连接的单个入口和单个出口。 柴油机废气喷射喷嘴将柴油机废气直接喷入部分螺旋流路的入口。