公开(公告)号：US20140366514A1

公开(公告)日：2014-12-18

申请号：US14474194

申请日：2014-09-01

Applicant: Caterpillar Inc.

Inventor： Steven R. Lewis ,  Yong Yi ,  Arvind Jujare ,  Muheng Zhang

IPC: F01N3/05 ,  F01N1/00

CPC classification number: F01N3/2066 ,  F01N2240/20 ,  F01N2470/20 ,  F01N2610/02 ,  Y02T10/24

Abstract: An exhaust aftertreatment system is disclosed. The exhaust aftertreatment system includes a premixer conduit that defines an exhaust flow path, a baffle disposed in the exhaust flow path, and a reductant injector in fluid communication with the exhaust flow path. The baffle is positioned in the premixer conduit, which includes a premixer inlet, a transition section, and a premixer outlet. The transition section is disposed between the premixer inlet and the premixer outlet. The premixer inlet is in fluid communication with the engine. The reductant injector is positioned downstream of the baffle and upstream of the premixer outlet.

Abstract translation: 公开了排气后处理系统。 排气后处理系统包括限定排气流路的预混合器管道，设置在排气流路中的挡板和与排气流路流体连通的还原剂喷射器。 挡板位于预混合器导管中，其包括预混合器入口，过渡段和预混合器出口。 过渡部分设置在预混合器入口和预混合器出口之间。 预混合器入口与发动机流体连通。 还原剂喷射器位于挡板的下游和预混合器出口的上游。