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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
ANALYSIS IN DYNAMOMETER OF THE PERFORMANCE AND EMISSIONS OF A SMALL DIESEL CYCLE ENGINE OPERATING WITH ETHANOL - CASTOR OIL BLENDS
Submission Author:
Maicon Douglas Bernardi , RS
Co-Authors:
Maicon Douglas Bernardi, Carlos Roberto Altafini, Giovani Dambros Telli
Presenter: Maicon Douglas Bernardi
doi://10.26678/ABCM.ENCIT2020.CIT20-0056
Abstract
The purpose of this article is to investigate the operation of a compression ignition engine operating with hydrous ethanol (HET) and castor oil (OM) blends, in two volume concentrations: 60% HET and 40% OM and 70% HET and 30% OM. The experiments were conducted with a single cylinder engine coupled to a dynamometer at full load, varying its speed, the compression ratio (20:1 and 21.5:1) and start of injection (10° and 17°, before top dead center - BTDC). In general, the results indicated that the torque and, consequently, the power, developed by the engine with diesel fuel (DO) was higher than HET-OM blends, with lower specific fuel consumption. Fuel conversion efficiencies of blends was higher than that of DO. The results indicated a significant reduction in the exhaust gas temperature in operation with HET-OM blends. The emissions of CO, CO2 and NOx obtained with the blends decreased compared to those obtained with the DO operation. Moreover, the smoke index significantly reduced in the operation with HET-OM blends. The HC emission for blends were higher than that of DO. In general, the results obtained were satisfactory, demonstrating that HET-OM blends can be used in diesel cycle engines, under certain conditions, resulting in emission reductions and higher fuel conversion efficiency.
Keywords
compression ignition engine, ethanol-castor oil blends, Dynamometer, performance and emissions parameters
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