CONVERSION OF FUEL NITROGEN TO NO IN AUTOMOTIVE ENGINES

Nitrogen-free and nitrogen-doped fuels were investigated using a single-cylinder, spark-ignition engine, and gasoline and diesel-powered vehicles. The single-cylinder engine experiments showed that only NO (nitric oxide) emissions were affected by nitrogen in the fuel and that the percentage of fuel nitrogen converted to NO (PNCNO) ranged from about 5 to 100. Generally, PNCNO increased when equivalence ratio, concentration of nitrogen in the fuel, engine load, or compression ratio decreased; PNCNO also increased as the level of EGR or engine speed increased, or as spark timing was retarded from MBT. The vehicle experiments showed PNCNO to be substantially higher (about 80-90) in gasoline engines than in a diesel engine (about 35), and that equivalence ratio, fuel-nitrogen concentration and EGR affected PNCNO in a multi-cylinder gasoline engine in the same manner as in the single-cylinder engine. The above experimental results could be rationalized on the basis of a speculative mechanism which incorporated the fuel-nitrogen reactions, the Zeldovich reactions and their interactions.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Reprinted from SP-559 Alternate Fuels for Spark Ignition Engines. Fuels and Lubricants Meeting San Francisco, California, October 31-November 3, 1983.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Sapre, A R
  • Quader, A A
• Publication Date: 1983

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 24 p.
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Combustion; Diesel engines; Exhaust gas recirculation; Gasoline engines; Nitric oxide; Nitrogen; Nitrogen oxides; Spark ignition engines
• Subject Areas: Safety and Human Factors;

Filing Info

• Accession Number: 00387432
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE 831675 Reprint, HS-036 789
• Files: HSL, USDOT
• Created Date: Aug 30 1984 12:00AM