公开(公告)号：US09222388B2

公开(公告)日：2015-12-29

申请号：US13780279

申请日：2013-02-28

Applicant: Tenneco Automotive Operating Company Inc.

Inventor： Dana Kregling ,  Michael Golin ,  Guanyu Zheng ,  Alan Brockman ,  Adam J. Kotrba ,  Timothy P. Gardner ,  Andrey Factor

IPC: F01N3/00 ,  F01N3/20

CPC classification number: F01N3/08 ,  F01N3/2066 ,  F01N13/011 ,  F01N2260/02 ,  F01N2610/02 ,  F01N2610/144 ,  F01N2610/1466 ,  F01N2610/1473 ,  F01N2610/1486 ,  F01N2610/1493 ,  Y02T10/24 ,  Y10T137/2541

Abstract: An exhaust system including a selective catalytic reduction (SCR) component and an oxidation catalyst component. The exhaust system also includes an exhaust treatment fluid injection system for dispersing an exhaust treatment fluid into an exhaust stream at a location adjacent either the SCR component or the oxidation catalyst component, wherein the exhaust treatment fluid injection device includes a common rail that provides the exhaust treatment fluid under pressure to a plurality of injectors that dose the exhaust treatment fluid into the exhaust stream. The exhaust treatment fluid injection device also includes a return rail for returning unused exhaust treatment fluid to the fluid source. Each of the common rail and return rail can be configured to allow drainage of the exhaust treatment fluid as a freeze-protection feature.

Abstract translation: 一种包括选择性催化还原（SCR）组分和氧化催化剂组分的排气系统。 排气系统还包括废气处理流体注入系统，用于将废气处理流体分散到与SCR组件或氧化催化剂组分相邻的位置处的废气流中，其中排气处理流体注入装置包括提供废气的共轨 处理流体到多个喷射器，其将废气处理流体排放到排气流中。 废气处理流体注入装置还包括用于将未使用的废气处理流体返回到流体源的返回轨道。 公共轨道和回路中的每一个可以被配置为允许废气处理流体排出作为防冻特征。