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Type of publication: Straipsnis kitose duomenų bazėse / Article in other databases (S4)
Field of Science: Mechanikos inžinerija / Mechanical Engineering (T009)
Author(s): Labeckas, Gvidonas;Slavinskas, Stasys;Pauliukas, Arvydas
Title: The effect of rapeseed oil blending with ethanol on engine performance and exhaust emissions
Is part of: Journal of KONES. Powertrain and Transport / Permanent Commitee of Kones, Institute of Aeronautics, Automotive Industry Institute, Polish Academy of Science. Warsaw : European Science Society of Powertrain and Transport Publication, 2007, Vol. 14, No. 3
Extent: p. 331-338
Date: 2007
Keywords: Diesel engine;Rapeseed oil;Ethanol;Effective parameters;Emissions;Smoke opacity
Abstract: The article presents the bench testing results of a four stroke, four cylinder, direct injection, unmodified, naturally aspirated diesel engine operating on neat rapeseed oil (RO) and its 2.5 vol% (ERO2.5) and 7.5 vol% (ERO7.5) blends with ethanol. The purpose of the research was to investigate the effect of ethanol inclusion in the RO and preheating temperature on bio-fuel viscosity, engine brake power, specific fuel consumption, break thermal efficiency and emission composition changes, especially NO, NO2, NOx, CO, CO2, HC and smoke opacity of the exhausts. Inclusion in the RO 2.5 and 7.5 vol % of ethanol the blend viscosity at ambient temperature of 20 oC diminishes by 9.2 and 28.3%. During operation under constant air-to-fuel equivalence ratio λ= 1.6, blends ERO2.5 and ERO7.5 ensure the brake mean effective pressure (bmep) lower at the maximum torque 1800 min-1 by 0.5 and 2.3% (bmep=0.770 MPa) and at rated 2200 min-1 speed by 2.4 and 9.1% (bmep=0.740 MPa), correspondingly, than that of neat RO case. The bsfc at maximum torque (248.7 g/kWh) and rated power (247.5 g/kWh) for blends ERO2.5 and ERO7.5 is higher by 1.3-4.4% and 4.2-10.7% and the brake thermal efficiency lower by 0.5-1.5% and 3.3-7.6%, respectively. The tests revealed that during operation of the fully loaded engine at rated 2200 min-1 speed, ethanol inclusion in the RO up to 7.5vol% diminishes NO, NOx, HC, CO2 emissions, smoke opacity and temperature of the exhausts however it may increase simultaneously NO2, NO2/NOx and CO emissions
Affiliation(s): Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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