Systems and methods for increasing nitrogen dioxide fraction in exhaust gas at low temperature
Abstract
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:
- Research Org.:
- Cummins Inc., Columbus, IN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1467418
- Patent Number(s):
- 10022667
- Application Number:
- 15/663,457
- Assignee:
- Cummins Inc. (Columbus, IN)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
- DOE Contract Number:
- EE0006795
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2017 Jul 28
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Zha, Yuhui, Heichelbech, John K., and Cunningham, Michael J. Systems and methods for increasing nitrogen dioxide fraction in exhaust gas at low temperature. United States: N. p., 2018.
Web.
Zha, Yuhui, Heichelbech, John K., & Cunningham, Michael J. Systems and methods for increasing nitrogen dioxide fraction in exhaust gas at low temperature. United States.
Zha, Yuhui, Heichelbech, John K., and Cunningham, Michael J. Tue .
"Systems and methods for increasing nitrogen dioxide fraction in exhaust gas at low temperature". United States. https://www.osti.gov/servlets/purl/1467418.
@article{osti_1467418,
title = {Systems and methods for increasing nitrogen dioxide fraction in exhaust gas at low temperature},
author = {Zha, Yuhui and Heichelbech, John K. and Cunningham, Michael J.},
abstractNote = {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).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {7}
}