Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Olivier Sonntag0
Ruth Savage0
Colin Newman0
Gudmund Smedler0
Isabel Tingay0
Kieran Cole0
Date of Patent
May 17, 2016
Patent Application Number
13713349
Date Filed
December 13, 2012
Patent Citations Received
Patent Primary Examiner
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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