公开(公告)号：US20130291523A1

公开(公告)日：2013-11-07

申请号：US13462165

申请日：2012-05-02

申请人： Viresh B. Shah ,  Paul Gerald Savich ,  Ronald J. Huber ,  Vivek Sundararaj

发明人： Viresh B. Shah ,  Paul Gerald Savich ,  Ronald J. Huber ,  Vivek Sundararaj

IPC分类号： F01N3/10 ,  H01L23/467

CPC分类号： F01N3/2066 ,  F01N3/023 ,  F01N3/035 ,  F01N3/106 ,  F01N5/04 ,  F01N13/009 ,  F01N2260/022 ,  F01N2260/20 ,  F01N2610/02 ,  F01N2610/11 ,  F01N2610/1453 ,  F01P5/06 ,  Y02T10/24

摘要： A diesel emission fluid (DEF) injection system for a machine is disclosed. The machine includes a fan or a source of flowing air, as well as a first portion of an exhaust system coupled to an exhaust after-treatment device and a second portion of the exhaust system disposed below the exhaust after-treatment device. The DEF injection system includes a DEF line in selective communication with the first portion of the exhaust system as well as electrical components such as an electrically activated valve for injecting the DEF into the first portion of the exhaust system. To maintain the electrical components at acceptably low temperatures, a heat shield is disposed between the electrical components and the second portion of the exhaust system and an air duct is provided that communicates air from the fan or source of flowing air towards the electrical components for forced air cooling.

摘要翻译： 公开了一种用于机器的柴油机排放液（DEF）注射系统。 该机器包括风扇或流动空气源，以及耦合到排气后处理装置的排气系统的第一部分和设置在排气后处理装置下方的排气系统的第二部分。 DEF注射系统包括与排气系统的第一部分选择性连通的DEF线以及诸如用于将DEF注入到排气系统的第一部分中的电激活阀的电气部件。 为了将电气部件保持在可接受的低温度，在电气部件和排气系统的第二部分之间设置隔热罩，并且设置有空气管道，其将来自风扇或流动空气源的空气朝向用于强制的电气部件 空气冷却。