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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
NUMERICAL ANALYSIS OF A SINGLE-CYLINDER COMPRESSION IGNITION ENGINE FUELED WITH DIESEL AND STRAIGHT SOYBEAN OIL-DIESEL BLENDS
Submission Author:
carlos picon , bolivar
Co-Authors:
carlos picon , Emilio Vera, Nury Audrey Nieto Garzón, Amir Antonio Martins Oliveira, Leonel R Cancino
Presenter: carlos picon
doi://10.26678/ABCM.ENCIT2020.CIT20-0206
Abstract
This work reports a numerical approach and validation against experimental data available in the literature of performance parameters and heat release rate of a compression-ignition internal combustion engine fueled with fossil diesel oil and straight soybean oil-diesel blends. Four fuel blends named 100D(25°C), 50S50D(25°C), 50S50D(85°C) and 80S20D(85°C) regarding the soybean and diesel volumetric percentage and fuel temperature were simulated for 1800 rpm, 2100 rpm and 2200 rpm engine speeds and brake mean effective pressure conditions as in tests on dynamometric bench. The AVL-BOOST™ package was the computational tool used in this work. Performance parameters as torque, power, mean effective pressure (MEP), specific fuel consumption (sfc), volumetric efficiency, thermal efficiency and fuel mass injected, as well as the heat release rate, are then presented. The developed AVL-BOOST™ engine model involves all the main engine components in terms of intake and exhaust collectors, including pipe lines, plenums, cylinder, intake and exhaust valves geometrical parameters and operation. The numerical results of this work show good agreement with experimental data, with experimental to numerical errors (average values) of around ±0.4% for Diesel oil, ±1.2% for Soybean oil / Diesel oil - 50% / 50% (25°C), ±2.1% for Soybean oil / Diesel oil - 50% / 50% (85°C) and ±1.7% for Soybean oil / Diesel oil - 80% / 20% (85°C). Absolute errors are then listed for all parameter and conditions.
Keywords
Numerical simulation, Compression ignition internal combustion engines, AVL-BoostTM, straight soybean oil, diesel oil
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