Near-zero NOx control for diesel aftertreatment

J. E. Parks; G. J. Wagner; W. S. Epling; M. W. Sanders; L. E. Campbell

doi:10.4271/1999-01-2890

Near-zero NOx control for diesel aftertreatment

J. E. Parks, G. J. Wagner, W. S. Epling, M. W. Sanders, L. E. Campbell

Research output: Contribution to journal › Conference article › peer-review

11 Scopus citations

Abstract

A two-chamber catalyst system for the aftertreatment of No. 2 Diesel exhaust is demonstrated. NOx conversion efficiencies greater than 95% were obtained over a broad range of operating temperatures and NOx levels. The system incorporates a NOx catalyst (SCONOx™) for the removal of CO, hydrocarbons, and NOx from the exhaust stream and a SO₂ catalyst (SCOSOx™) for the protection of the NOx catalyst from sulfur poisoning. Both catalysts are of sorbate or "trap" type. Hydrogen is used as the reductant and can be supplied by on-board fuel reformers. Tests of the catalysts were performed with various loads, temperatures, and NOx levels. A light-duty diesel engine with no particulate control was used for the tests. All tests were conducted using No. 2 Diesel fuel.

Original language	English
Journal	SAE Technical Papers
DOIs	https://doi.org/10.4271/1999-01-2890
State	Published - 1999
Externally published	Yes
Event	Future Transportation Technology Conference and Exposition - Costa Mesa, CA, United States Duration: Aug 17 1999 → Aug 19 1999

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10.4271/1999-01-2890

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@article{9f97110f00e441549f1614e9c48cd618,

title = "Near-zero NOx control for diesel aftertreatment",

abstract = "A two-chamber catalyst system for the aftertreatment of No. 2 Diesel exhaust is demonstrated. NOx conversion efficiencies greater than 95% were obtained over a broad range of operating temperatures and NOx levels. The system incorporates a NOx catalyst (SCONOx{\texttrademark}) for the removal of CO, hydrocarbons, and NOx from the exhaust stream and a SO2 catalyst (SCOSOx{\texttrademark}) for the protection of the NOx catalyst from sulfur poisoning. Both catalysts are of sorbate or {"}trap{"} type. Hydrogen is used as the reductant and can be supplied by on-board fuel reformers. Tests of the catalysts were performed with various loads, temperatures, and NOx levels. A light-duty diesel engine with no particulate control was used for the tests. All tests were conducted using No. 2 Diesel fuel.",

author = "Parks, {J. E.} and Wagner, {G. J.} and Epling, {W. S.} and Sanders, {M. W.} and Campbell, {L. E.}",

year = "1999",

doi = "10.4271/1999-01-2890",

language = "English",

journal = "SAE Technical Papers",

issn = "0148-7191",

publisher = "SAE International",

note = "Future Transportation Technology Conference and Exposition ; Conference date: 17-08-1999 Through 19-08-1999",

}

TY - JOUR

T1 - Near-zero NOx control for diesel aftertreatment

AU - Parks, J. E.

AU - Wagner, G. J.

AU - Epling, W. S.

AU - Sanders, M. W.

AU - Campbell, L. E.

PY - 1999

Y1 - 1999

N2 - A two-chamber catalyst system for the aftertreatment of No. 2 Diesel exhaust is demonstrated. NOx conversion efficiencies greater than 95% were obtained over a broad range of operating temperatures and NOx levels. The system incorporates a NOx catalyst (SCONOx™) for the removal of CO, hydrocarbons, and NOx from the exhaust stream and a SO2 catalyst (SCOSOx™) for the protection of the NOx catalyst from sulfur poisoning. Both catalysts are of sorbate or "trap" type. Hydrogen is used as the reductant and can be supplied by on-board fuel reformers. Tests of the catalysts were performed with various loads, temperatures, and NOx levels. A light-duty diesel engine with no particulate control was used for the tests. All tests were conducted using No. 2 Diesel fuel.

AB - A two-chamber catalyst system for the aftertreatment of No. 2 Diesel exhaust is demonstrated. NOx conversion efficiencies greater than 95% were obtained over a broad range of operating temperatures and NOx levels. The system incorporates a NOx catalyst (SCONOx™) for the removal of CO, hydrocarbons, and NOx from the exhaust stream and a SO2 catalyst (SCOSOx™) for the protection of the NOx catalyst from sulfur poisoning. Both catalysts are of sorbate or "trap" type. Hydrogen is used as the reductant and can be supplied by on-board fuel reformers. Tests of the catalysts were performed with various loads, temperatures, and NOx levels. A light-duty diesel engine with no particulate control was used for the tests. All tests were conducted using No. 2 Diesel fuel.

UR - http://www.scopus.com/inward/record.url?scp=85072467027&partnerID=8YFLogxK

U2 - 10.4271/1999-01-2890

DO - 10.4271/1999-01-2890

M3 - Conference article

AN - SCOPUS:85072467027

SN - 0148-7191

JO - SAE Technical Papers

JF - SAE Technical Papers

T2 - Future Transportation Technology Conference and Exposition

Y2 - 17 August 1999 through 19 August 1999

ER -

Near-zero NOx control for diesel aftertreatment

Abstract

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