公开(公告)号：US20140311123A1

公开(公告)日：2014-10-23

申请号：US13866429

申请日：2013-04-19

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Eugene V. Gonze ,  Charles Gough

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

CPC classification number: F01N3/2013 ,  F01N3/035 ,  F01N3/103 ,  F01N3/36 ,  F01N9/00 ,  F01N11/002 ,  F01N2240/16 ,  F01N2510/06 ,  F01N2610/02 ,  F01N2610/03 ,  Y02T10/24

Abstract: An exhaust gas treatment system for an internal combustion engine is provided. The system includes an exhaust gas conduit extending from the engine configured to receive an exhaust gas stream from the engine, a first injector in fluid communication with the exhaust gas conduit configured to selectively inject fuel containing unburned hydrocarbon (HC) into the exhaust gas conduit and an oxidation catalyst disposed in the exhaust gas conduit downstream from the first injector. The system further includes a hydrocarbon selective catalyst reduction (HCSCR) catalyst applied on the oxidation catalyst, a heating device positioned at an upstream side of the oxidation catalyst configured to heat the oxidation catalyst and HCSCR catalyst, a selective catalyst reduction (SCR) device disposed within the exhaust gas conduit downstream from the oxidation catalyst, and a particulate filter positioned downstream from the selective catalyst reduction device.

Abstract translation: 提供了一种用于内燃机的废气处理系统。 该系统包括从发动机延伸的废气导管，其构造成接收来自发动机的排气流;与排气导管流体连通的第一喷射器，其构造成将含有未燃烧的烃（HC）的燃料选择性地喷射到废气导管中， 设置在第一喷射器下游的废气导管中的氧化催化剂。 所述系统还包括施加在所述氧化催化剂上的烃选择性催化剂还原（HCSCR）催化剂，位于所述氧化催化剂的上游侧的加热装置，所述加热装置被配置成加热所述氧化催化剂和HCSCR催化剂，设置选择性催化剂还原（SCR）装置 在氧化催化剂下游的废气导管内，以及位于选择性催化剂还原装置下游的颗粒过滤器。