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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
ANALYSIS OF VEHICLE POWERED BY SUPERCHARGED VERSUS ASPIRATED OTTO CYCLE INTERNAL COMBUSTION ENGINE
Submission Author:
Samuel Benedet Hoffmann , RS
Co-Authors:
Samuel Benedet Hoffmann, Carlos Roberto Altafini
Presenter: Samuel Benedet Hoffmann
doi://10.26678/ABCM.ENCIT2020.CIT20-0030
Abstract
This article has experimentally analyzed the influence of the turbocharger on the performance parameters of a spark ignition engine. Initially, a 2-liters naturally aspirated engine operating with podium gasoline was tested. Torque and power measurements were taken directly on the engine flywheel with a bench-top electric dynamometer obtaining the greatest torque of 148 N·m and power of 79.9 kW. After the bench test, measurements were taken directly on the vehicle's wheels using an inertial roller dynamometer being possible to verify a greater transmission loss of 16.9%. In order to supercharge the engine, a turbocharger set and its components were dimensioned to achieve a greater fuel flow (pump and injectors). As fuels, podium gasoline, ethanol and blends of gasoline with ethanol were used. The emission tests for the natural aspirated and supercharged vehicle were compared with the CONAMA standard 418/2009, with CO, HC and CO2 levels being measured. The supercharged vehicle operating with ethanol showed the best results: torque of 218.6 N·m and power of 114.5 kW.
Keywords
Internal combustion engine, turbocharger, electronic fuel injection, electronic ignition, emissions
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