US Patent 9341098 Automotive catalytic aftertreatment system

Patent 9341098 was granted and assigned to Johnson Matthey PLC on May, 2016 by the United States Patent and Trademark Office.

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US Patent 11873994 Electrically heated catalytic combustor

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Patent abstract

A catalytic aftertreatment system for a diesel engine exhaust gas is described. The system comprises a diesel oxidation catalyst (DOC) and an aftertreatment device located downstream of the diesel oxidation catalyst (DOC), which aftertreatment device requires periodic heat treatment, and means to generate a temperature increase within the aftertreatment device, said diesel oxidation catalyst (DOC) comprising an upstream zone of length from 0.5 to 2 inches (12.7-50.81 mm) of higher oxidation activity for hydrocarbons (HC) than the remainder of the diesel oxidation catalyst (DOC).

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Patent Inventor Names

Colin Newman0

Gudmund Smedler0

Isabel Tingay0

Kieran Cole0