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Title: Systems and methods for increasing nitrogen dioxide fraction in exhaust gas at low temperature

An aftertreatment system includes a first oxidation catalyst, a second oxidation catalyst, and a turbocharger. The first oxidation catalyst is upstream of the turbocharger and includes a first oxidation catalyst formulation. The second oxidation catalyst is downstream of the turbocharger and includes a second oxidation catalyst formulation different than the first oxidation catalyst formulation. The second oxidation catalyst formulation is configured to promote conversion of nitric oxide (NO) to nitrogen dioxide (NO2).
Inventors:
; ;
Issue Date:
OSTI Identifier:
1467418
Assignee:
Cummins Inc. (Columbus, IN) NETL
Patent Number(s):
10,022,667
Application Number:
15/663,457
Contract Number:
EE0006795
Resource Relation:
Patent File Date: 2017 Jul 28
Research Org:
Cummins Inc., Columbus, IN (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English

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