Exhaust gas post-processing system

Patent metadata

Field	Value
Publication number	US-9828895-B2
Application number	US-201514957232-A
Country	US
Kind code	B2
Filing date	Dec 2, 2015
Priority date	Sep 30, 2015
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

An exhaust gas post-processing system includes an oxidation catalyst configured to oxidize substances included in the exhaust gas; a diesel particulate filter configured to collect particulate matters included in the exhaust gas and disposed subsequent to the oxidation catalyst; a dosing module configured to inject a reducing agent and disposed subsequent to the diesel particulate filter; and a selective catalytic reduction configured to remove nitrogen oxide using the reducing agent included in the exhaust gas and disposed subsequent to the dosing module. The diesel particulate filter includes a catalytic component represented by La 1-x Ag x MnO 3 (where 0<x<1).

First claim

What is claimed is:

1. An exhaust gas post-processing system, comprising:
an oxidation catalyst configured to oxidize substances included in the exhaust gas;
a diesel particulate filter configured to collect particulate matters included in the exhaust gas and disposed subsequent to the oxidation catalyst;
a dosing module configured to inject a reducing agent and disposed subsequent to the diesel particulate filter; and
a selective catalytic reduction configured to remove nitrogen oxide using the reducing agent included in the exhaust gas and disposed subsequent to the dosing module,
wherein the diesel particulate filter includes a catalytic component represented by La 1-x Ag x MnO 3 (where 0<x<1), and
wherein the selective catalytic reduction includes V 2 O 5 —WO 3 /TiO 2 .

2. The exhaust gas post-processing system of claim 1 , wherein:
the diesel particulate filter includes a catalyst component represented by La 1-x Ag x MnO 3 (where 0.2≦x≦0.8).

3. The exhaust gas post-processing system of claim 1 , wherein:
the oxidation catalyst includes a catalyst component consisting of platinum and palladium.

4. The exhaust gas post-processing system of claim 1 , wherein:
the reducing agent includes urea.

Assignees

• Hyundai Motor Co Ltd

Inventors

• Choung Jin Woo

Classifications

• F01N13/16

  Selection of particular materials · CPC title

• B01D2255/1021

  Platinum · CPC title

• B01D2255/20738

  Iron · CPC title

• B01D2255/20723

  Vanadium · CPC title

• B01D2255/50

  Zeolites · CPC title