COMPUTER PREDICTED COMPRESSION RATIO EFFECTS ON NOX EMISSIONS FROM A METHANOL FUELED SI ENGINE

A combustion kinetics computer model was used to study the compression ratio effects on performance and emissions of a methanol fueled SI engine. The computer model predicted a continual increase in volumetric NOx emissions for increasing compression ratio at MBT spark timing. With only a 3 degree retard from MBT, the computer predicted volumetric NOx emissions at 14:1 compression ratio was reduced to that at 8.44:1 compression ratio and MBT spark timing. With this spark retard setting, there was a net increase in power and thermal efficiency of 13.7% relative to the MBT values at 8.44:1 compression ratio.

Media Info

  • Features: References;
  • Pagination: p. 37-43
  • Serial:
    • Volume: 1

Subject/Index Terms

Filing Info

  • Accession Number: 00178080
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: Paper 779006 Proceeding
  • Files: TRIS
  • Created Date: Oct 12 1978 12:00AM