公开(公告)号：US20180156093A1

公开(公告)日：2018-06-07

申请号：US15366136

申请日：2016-12-01

Applicant: Caterpillar Inc.

Inventor： Guru Gireesh ,  Arvind Jujare ,  Tim T. Trubnikov

IPC: F01N3/28 ,  F01N3/20 ,  F01N3/035

CPC classification number: F01N3/2892 ,  F01N3/021 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/103 ,  F01N3/105 ,  F01N3/206 ,  F01N3/2066 ,  F01N2240/20 ,  F01N2250/02 ,  F01N2470/02 ,  F01N2470/04 ,  F01N2470/18 ,  F02M26/15 ,  F02M26/19 ,  Y02T10/24

Abstract: An exhaust aftertreatment system includes a housing including first and second axial ends. An exhaust inlet is disposed adjacent the first axial end. An exhaust outlet is disposed adjacent the second axial end. A catalytic converter is disposed between the first and second axial ends. A diffuser is disposed inside the housing between the first axial end and the catalytic converter. The diffuser includes a shell in communication with the exhaust inlet. The shell includes proximal and distal portions and a front side facing the catalytic converter. The proximal and distal portions are substantially equal in frontal area. The proximal portion is adjacent the exhaust inlet and includes a first plurality of front side openings totaling a first open area and the distal portion includes a second plurality of front side openings totaling a second open area. The first open area is about 1.8-2.2 times the second.

公开(公告)号：US10227908B2

公开(公告)日：2019-03-12

申请号：US15366136

申请日：2016-12-01

Applicant: Caterpillar Inc.

Inventor： Guru Gireesh ,  Arvind Jujare ,  Tim T. Trubnikov

IPC: F01N3/00 ,  F01N3/28 ,  F01N3/035 ,  F01N3/20 ,  F01N3/08 ,  F01N3/10 ,  F01N3/021 ,  F02M26/15 ,  F02M26/19

Abstract: An exhaust aftertreatment system includes a housing including first and second axial ends. An exhaust inlet is disposed adjacent the first axial end. An exhaust outlet is disposed adjacent the second axial end. A catalytic converter is disposed between the first and second axial ends. A diffuser is disposed inside the housing between the first axial end and the catalytic converter. The diffuser includes a shell in communication with the exhaust inlet. The shell includes proximal and distal portions and a front side facing the catalytic converter. The proximal and distal portions are substantially equal in frontal area. The proximal portion is adjacent the exhaust inlet and includes a first plurality of front side openings totaling a first open area and the distal portion includes a second plurality of front side openings totaling a second open area. The first open area is about 1.8-2.2 times the second.