EFFECTS OF FOSSIL DIESEL AND BIODIESEL BLENDS ON THE PERFORMANCES AND EMISSIONS OF AGRICULTURAL TRACTOR ENGINES

Abstract

Rapid growth in the energy consumption has conditioned the need for iscovering the alternative energy resources which would be adapted to the xisting engine constructions and which would satisfy the additional criteria elated to the renewability, ecology and reliability of use. Introduction of iodiesel has been the focus of attention over the last ten years. The aim of his research is to investigate the influence of biodiesel on the performances nd exhaust gas emissions of medium power agricultural tractor engines 37-66 kW). The reason for the selection of this category is that those types f tractors are most frequently used in agriculture. n this research biodiesel produced from sunflower oil was blended with ossil diesel. Biodiesel, fossil diesel and fossil diesel blends with 15, 25, 50 nd 75%v/v biodiesel were tested for their influence on the engine erformances and emissions. The testing was performed on a four-cylinder iesel engine with 48 kW rated power. The experimental research on the ngine performances was conducted in compliance with OECD test CODE , and the exhaust gas emissions were tested according to the ISO 8178-4, 1. he use of biodiesel and fossil diesel blends reduced the engine power with he increase of biodiesel share in the blend. However, the exception was the lend with 15%v/v biodiesel which induced a slight increase in the engine ower. Depending on the share of biodiesel in the blend all blends fuels howed increased specific fuel consumption compared to the fossil diesel. hermal efficiency increased as a result of more complete combustion of iodiesel and fossil diesel blends. The exhaust gas emissions implied that the ddition of biodiesel reduced the content of CO2 and CO, as well as the emperature of exhaust gases, but it increased the emission of NOx.

Keywords

Dates

  • Submission Date2011-11-22
  • Revision Date2012-03-03
  • Acceptance Date2012-04-16

DOI Reference

10.2298/TSCI111122106T

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Volume 17, Issue 1, Pages263 -278