Limits on the total future potential of biodiesel fuel due to the availability of raw materials mean that ambitious 20% fuel replacement targets will need to be met by the use of both first and next generation biodiesel fuels. The use of higher percentage biodiesel blends requires engine recalibration, as it affects engine performance, combustion patterns and emissions. Previous work has shown that the combustion of 50:50 blends of biodiesel fuels (first generation RME and next generation synthetic fuel) can give diesel fuel-like performance (i.e. in-cylinder pressure, fuel injection and heat release patterns). This means engine recalibration can be avoided, plus a reduction in all the regulated emissions. Using a 30% biodiesel blend (with different first and next generation proportions) mixed with Diesel may be a more realistic future fuel. This work shows that 15% biodiesel, 15% Synthetic Fuel and 70% Diesel can give near diesel performance with improved thermal efficiency whilst reducing particulate matter, nitrogen oxides, carbon monoxide and total hydrocarbon emissions for all engine operating conditions tested.
Diesel Engine Performance and Emissions when First Generation Meets Next Generation Biodiesel
Sae Technical Papers
Powertrains, Fuels and Lubricants Meeting ; 2009
15.06.2009
Aufsatz (Konferenz)
Englisch
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