Raymond T Conway

US Patent:

20180171850, Jun 21, 2018

Filed:

Dec 19, 2017

Appl. No.:

15/846253

Inventors:

- London, GB
Sougato Chatterjee - Audubon PA, US
Raymond Conway - Audubon PA, US
Mojghan Naseri - Audubon PA, US

International Classification:

F01N 3/20
F01N 13/00

Abstract:

Exhaust purification system and methods for the reduction of emissions from an exhaust stream, including an upstream catalyst coupled with a passive NOadsorber catalyst; means to contact the exhaust stream with ozone, to react NO in the exhaust stream with the ozone to produce NO; and an SCR catalyst.

US Patent:

20170298796, Oct 19, 2017

Filed:

Apr 13, 2016

Appl. No.:

15/097611

Inventors:

- London, GB
Ceren AYDIN - Audubon PA, US
Shadab MULLA - Audubon PA, US
Raymond CONWAY - Audubon PA, US

International Classification:

F01N 3/20
F01N 3/10
F01N 13/00
F01N 13/16
F01N 3/035

Abstract:

An exhaust system for treating an exhaust gas produced by a diesel engine comprises: (a) an emissions control device (ECD) for oxidising carbon monoxide (CO) and/or hydrocarbons (HCs), wherein the emissions control device comprises a platinum group metal (PGM) and a substrate, wherein the PGM is platinum, palladium or a combination thereof; (b) an injector for introducing an ammonia precursor into the exhaust gas, which is downstream of the ECD; (c) a first selective catalytic reduction (SCR) catalyst downstream of the injector, wherein the first SCR catalyst comprises a substrate and a first SCR composition, wherein the substrate is either a flow-through substrate or a filtering substrate; (d) a second SCR catalyst downstream of the first SCR catalyst, wherein the second SCR catalyst comprises a flow-through substrate and a second SCR composition; and wherein at least one of the ECD and the first SCR reduction catalyst has a filtering substrate.