Johnson Matthey Public Limited Company

Ronny Allansson

James Patrick Warren

Guy Richard Chandler

Anders Klas Andreasson

Klas Anders Andreasson

Nils Myers

Ari Uusimaki

A canister ( ) contains a catalyst for generating NO and a filter ( ) for trapping PM, e.g. from diesel engines. The filter is thermally isolated from the canister, and preferably is surrounded by an annular monolith comprising the NO oxidation catalyst or a SCR catalyst. The invention facilitates the combustion of PM even at low exhaust gas temperatures, in a compact device.

Device and method for removing sooty particulate from exhaust gases from combustion processes

A heavy duty diesel engine having an exhaust system incorporating a catalyst to convert NO to NO and a particulate trap on which soot particles are continuously oxidized, and a portion of the exhaust gases are recirculated through a cooler and exhaust gas flow valve before being mixed with air and fed to the engine cylinders. The system also incorporates a sensor to detect the amount of NOx in the exhaust to adjust the gas flow valve, thereby adjusting the portion of recirculated exhaust gas fed to the engine cylinders.

Emissions control

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Kungsbacka, Sweden

Ronny Allansson