The Analysis of the Motor Characteristics Of D–RME–E Fuel Blend During On-Field Tests

This article reports on a study that included a detailed analysis of the characteristics of D–RME–E (diesel-rapeseed methyl ester-ethanol), used to fuel an 18 kW capacity tractor unit equipped with a four-stroke D21A1 diesel engine (combustion chamber consists of a dished piston). Field tests were conducted while the tractor was loosening stubble (soil moisture at 17%). The results of field tests showed a positive effect on the dynamic and ecological characteristics of the tractor unit while fueling the engine with a biodiesel blend 70% D plus 30% RME (hereinafter called B30), also admixed with dehydrated ethanol additive (5% (v/v)). This compound enabled no decrease in the diesel engine power, and in the range of experimental error, showed a tendency of approximately 2% fuel economy compared to pure B30. Improvements in specific fuel consumption (SFC) rates were small but consistent for B30 plus 5% ethanol; these improvements were assumed to be the result of improving the efficiency of the thermal cycle. A dramatic decrease in particulate matter emissions (40%), hydrocarbons (25%) and carbon dioxide (6%) emissions comparing to fossil diesel was observed when operating the tractor unit at maximum traction power which is a characteristic operating mode for heavy duty transport used in agriculture. Nitrogen oxide (NOx) emission of the proposed D–RME–E blend showed a tendency to decrease to 4% compared to B30. The authors conclude that the proposed blend with the 5% ethanol additive is most appropriate in areas especially sensitive to environmental pollution.

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  • Authors:
    • Raslavicius, Laurencas
    • Bazaras, Zilvinas
  • Publication Date: 2009


  • English

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  • Accession Number: 01148172
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 29 2009 10:05AM