Exhaust system

Disclosed is an exhaust system for an internal combustion engine comprises a lean NOx trap 4and a NOx storage and reduction zone on a wall flow monolithic substrate having a pre-coated porosity of 50% or greater. The NOx storage and reduction zone comprises a platinum group metal loaded on a first s...

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Hauptverfasser:	Jonathan David Radcliffe, Gavin Michael Brown, Andrew Francis Chiffey
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS
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creator	Jonathan David Radcliffe Gavin Michael Brown Andrew Francis Chiffey
description	Disclosed is an exhaust system for an internal combustion engine comprises a lean NOx trap 4and a NOx storage and reduction zone on a wall flow monolithic substrate having a pre-coated porosity of 50% or greater. The NOx storage and reduction zone comprises a platinum group metal loaded on a first support, the first support comprising one or more alkaline earth metal compound. Also provided is a selective catalytic reduction, SCR, zone on a monolithic substrate, the selective catalytic reduction zone comprising copper or iron loaded on a second support, the second support comprising a molecular sieve. The NOx storage and reduction zone and the SCR may be mounted on a common second monolith 6.
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The NOx storage and reduction zone comprises a platinum group metal loaded on a first support, the first support comprising one or more alkaline earth metal compound. Also provided is a selective catalytic reduction, SCR, zone on a monolithic substrate, the selective catalytic reduction zone comprising copper or iron loaded on a second support, the second support comprising a molecular sieve. 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subjects	BLASTING ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS
title	Exhaust system
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