OPTIMUM ADMIXTURE OF BERAID 3540 AND SETTING OF ALPHA-ANGLE IN ETHANOL ENGINES

OPTIMAL INBLANDNING AV BERAID 3540 SAMT INSTAELLNING AV ALFA-VINKELN I ETANOLMOTORER

An ignition improver, Beraid 3540, was tested in an 11 litre ethanol engine without catalytic converter but with turbo and intercooler. In order to find optimum Beraid content, its concentration and the setting of the alpha angle were varied in accordance with an experimental design. Tests were performed as a two level factorial experiment with two variables (alpha angle and volumetricper centage of Beraid 3540) and four response factors. The responses evaluated were the regulated emissions carbon oxide (CO), hydro carbon (HC) and nitrogen oxides (NOx), with values from the 13-mode cycle (ECE R-49) and also an "energy index" during the 13-mode test. The models (one for each response) showed that the optimum conditions for the studied engine are 9 per cent Beraid and an alpha angle of 8 degrees. The 13-mode values for these conditions were 0.66 g/kWh HC, 2.08 g/kWh CO and 2.85 g/kWh NOx. Tests on 3 replicates showed that emissions at 2000 rpm were 130-220 g/h ethanol, 15-30 g/h formaldehyde and 25-70 g/h acetaldehyde.

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  • Corporate Authors:

    KOMMUNIKATIONSFORSKNINGSBEREDNINGEN

    BOX 5706
    STOCKHOLM,   Sweden  S-114 97
  • Authors:
    • HAUPT, D
    • NORDSTROEM, F
    • HELLBERG, S
    • UVEMO, U-B
  • Publication Date: 1997

Language

  • Swedish

Media Info

  • Pagination: 12 p.
  • Serial:
    • KFB-MEDDELANDE
    • Issue Number: 1997:39
    • Publisher: KOMMUNIKATIONSFORSKNINGSBEREDNINGEN
    • ISSN: 1401-1271

Subject/Index Terms

Filing Info

  • Accession Number: 00793545
  • Record Type: Publication
  • Source Agency: Swedish National Road and Transport Research Institute (VTI)
  • Files: ITRD
  • Created Date: Jun 15 2000 12:00AM