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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
NUMERICAL SIMULATION OF A SPARK IGNITION INTERNAL COMBUSTION ENGINE USING ETHANOL-GASOLINE BLENDS
Submission Author:
Laura Tatiana Meneses Barrera , SC , Brazil
Co-Authors:
Laura Tatiana Meneses Barrera, Meimer Peñaranda Carrillo, Leonel R Cancino
Presenter: Laura Tatiana Meneses Barrera
doi://10.26678/ABCM.ENCIT2020.CIT20-0103
Abstract
In this work, a spark-ignition internal combustion engine (SI-ICE) was numerically analyzed using 0D and 1D models in AVL-BOOST™ , using five ethanol-gasoline blends (E0, E20, E40, E60, E85) as fuels. The analysis included varying the compression ratio of each blend (11, 12.5, 13, 14) by analyzing engine performance and exhaust gas composition parameters, efficiencies, in-cylinder temperatures and pressure. A brief economic feasibility analysis for blends that showed similar power data was also performed. The combustion model used was the Wiebe model, taking the function parameters from the literature. There was a 17% decrease in torque and power for the E84 blend compared to the gasoline at compression ratio of 11. Blends such as E20 with a compression ratio of 13 and E40 with a compression ratio of 14 obtained torque and power values similar to gasoline. The lower heating value of ethanol implies a higher fuel specific consumption; there was a 9.7% decrease in consumption of E84 at compression ratio of 14 compared to E84 at compression ratio of 11.
Keywords
Ethanol / gasoline blends, AVL Boost, Spark-ignition internal combustion engines
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