Nox reduction system utilizing pulsed hydrocarbon injection

Patent · Mon Jan 01 04:00:00 EST 2001

OSTI ID:873610

Brusasco, Raymond M ^[1]; Penetrante, Bernardino M ^[2]; Vogtlin, George E ^[3]; Merritt, Bernard T ^[1]

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1. Livermore, CA
2. San Ramon, CA
3. Fremont, CA

Hydrocarbon co-reductants, such as diesel fuel, are added by pulsed injection to internal combustion engine exhaust to reduce exhaust NO.sub.x to N.sub.2 in the presence of a catalyst. Exhaust NO.sub.x reduction of at least 50% in the emissions is achieved with the addition of less than 5% fuel as a source of the hydrocarbon co-reductants. By means of pulsing the hydrocarbon flow, the amount of pulsed hydrocarbon vapor (itself a pollutant) can be minimized relative to the amount of NO.sub.x species removed.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 6202407
• OSTI ID: 873610
• Country of Publication: United States
• Language: English

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emissions
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