Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
INFLUENCE OF GASOLINE AND ETHANOL COMBUSTION PROCESS ON THE BLOCK VIBRATION LEVEL OF OTTO CYCLE ENGINE
Submission Author:
Claudio Santana , MG , Brazil
Co-Authors:
Claudio Santana, Jose Eduardo Mautone Barros, Helder Alves de Almeida Junior
Presenter: Claudio Santana
doi://10.26678/ABCM.COBEM2021.COB2021-0187
Abstract
Ethanol and gasoline are widely used with fuels in Otto cycle engines. These fuels have different heating power, advance ignition and octane number and the engine behaves differently depending on the type of fuel used. The objective of this study is to measure, compare and investigate the factors that affect the block vibration of an internal combustion engine as a function of the fuel used ethanol or gasoline. The experiment consisted of instrumenting the side of the engine block with an accelerometer to measure the level of vibration intensity of the engine running on a dynamometer bench varying engine speed and load conditions. The analysis correlated heating power, advance ignition and octane number of gasoline and ethanol fuels running in Otto cycle engine on a dynamometer bench varying engine speed and load conditions. The results showed that the engine vibration level increases with the increase in engine speed, load, advance ignition and octane number. The highest level of vibration was achieved in the region of maximum torque. The combustion process is mainly responsible for the highest level of vibration achieved with ethanol. In all operating conditions the vibration level of the engine block was higher as ethanol. On average, the vibration in the engine block was 12% higher with ethanol compared to gasoline. This research is important because it correlates the vibration level of the block of an internal combustion engine as an engine combustion process fueled with ethanol and gasoline
Keywords
Advance ignition Otto cycle engine, Internal combustion engine, Cycle Otto combustion process, Gasoline combustion process, Ethanol combustion process
