Browse Publications Technical Papers 2006-01-0235
2006-04-03

Performances and Emissions Optimization of a CR Diesel Engine Fuelled with Biodiesel 2006-01-0235

The modern common rail Diesel engines are normally optimised for being fuelled with the commercial Diesel fuel. Consequently, the ECU calibrations are defined to realize the best compromise between performances and emissions. If the engine is fuelled with an alternative biofuel with different characteristics (net heating value, stoichiometric A/F ratio, density, viscosity, etc.) it is clear that the calibration must be modified. Interest in fuels from renewable sources and their use in transportation has grown over the last decade. This is because of their biodegradability, potential improvements in exhaust emissions and benefits on the virtuous CO2 cycle of the earth.
This paper demonstrates that it is possible to optimise emissions and performances of a light duty C.R. Diesel engine fuelled with a vegetable derived fuel (Rapeseed Methyl-Ester) pure or blended with commercial Diesel fuel. Particularly in this paper the experimental results and ECU control solutions referring to different fuel compositions are shown.

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