公开(公告)号：US20150047326A1

公开(公告)日：2015-02-19

申请号：US14512609

申请日：2014-10-13

Applicant: Tenneco Automotive Operating Company Inc.

Inventor： Timothy P. Gardner ,  Padmanabha Reddy Ettireddy ,  Adam J. Kotrba ,  Michael Golin

IPC: F01N3/20 ,  F01N11/00 ,  F01N9/00

CPC classification number: F01N3/208 ,  F01N2610/02 ,  F01N2610/085 ,  F01N2610/1406 ,  F01N2610/1426 ,  F01N2610/1433 ,  F01N2610/144 ,  F01N2610/1453 ,  F01N2610/146 ,  F01N2610/1473 ,  F01N2610/1493 ,  F01N2900/1812 ,  F01N2900/1818 ,  Y02T10/24

Abstract: An exhaust aftertreatment system may include a reductant supply and diluent supply conduits, an injector and a control module. The reductant supply conduit includes a first valve controlling a flow of reductant through the reductant supply conduit. The diluent supply conduit includes a second valve controlling a flow of diluent through the diluent supply conduit. The injector is in fluid communication with the reductant supply conduit and the diluent supply conduit and is configured to provide fluid to an exhaust stream. The control module may control the first valve to provide a targeted amount of reductant through the injector. The control module may control the second valve to maintain a fluid flow rate through the injector that is at or above a minimum flow rate threshold of the injector based on a difference between a flow rate through the reductant supply conduit and the minimum flow rate threshold.

Abstract translation: 排气后处理系统可以包括还原剂供应和稀释剂供应管道，注射器和控制模块。 还原剂供应管道包括控制通过还原剂供应管道的还原剂流动的第一阀。 稀释剂供应管道包括控制稀释剂流经稀释剂供应管道的第二阀。 注射器与还原剂供应管道和稀释剂供应管道流体连通，并且被配置为向排气流提供流体。 控制模块可以控制第一阀以通过喷射器提供目标量的还原剂。 控制模块可以基于通过还原剂供应管道的流量与最小流速阈值之间的差异来控制第二阀，以保持通过喷射器的流体流速等于或高于喷射器的最小流量阈值。

公开(公告)号：US20140238504A1

公开(公告)日：2014-08-28

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

IPC: F01N3/08

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。