FORMATION OF HYDROCARBONS AND OXIDES OF NITROGEN IN AUTOMOBILE ENGINES

THE BASIC MECHANISMS RESPONSIBLE FOR THE PRODUCTION OF NITROGEN OXIDE AND HYDROCARBON EMISSIONS FROM AUTOMOTIVE SPARK-IGNITION ENGINES ARE REVIEWED. IT IS SHOWN HOW THE FORMATION OF NITRIC OXIDE IS RATE CONTROLLED IN THE HIGHTEMPERATURE BURNED GASES INSIDE THE ENGINE CYLINDER. A MATHEMATICAL MODEL WHICH PROEDICTS NITRIC OXIDE EMISSIONS FO GIVEN ENGINE DESIGN AND OPERATING VARIABLES IS THEN DESCRIBED. IN CONTRAST, THE HYDROCARBONS ARE FORMED WHEN THE FLAME QUENCHES AT THE CYLINDER HEAD AND PISTON WALLS. THE MAGNITUDE OF THESE QUENCH LAYERS AND CREVICES AND THE BOUNDARY LAYER AERODYNAMICS BY WHICH THE HYDRO-CARBON-RICH GLASES EXIT THE CYLINDER ARE DISCUSSED. /AUTHOR/

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  • Corporate Authors:

    American Chemical Society

    1155 16th Street, NW
    Washington, DC  United States  20036
  • Authors:
    • Heywood, J B
    • Keck, J C
  • Publication Date: 1973-3

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Filing Info

  • Accession Number: 00224629
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: Jul 31 1974 12:00AM