Banca de QUALIFICAÇÃO: MARCELO SUMAN SILVA ASSIS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : MARCELO SUMAN SILVA ASSIS
DATE: 10/01/2022
TIME: 14:00
LOCAL: PRESENCIAL - SALA 100 CAMPUS NOVA GAMELEIRA
TITLE:

1D NUMERICAL SIMULATION OF THE PERFORMANCE OF A SINGLE CYLINDRICAL ENGINE WITH VARIABLE COMPRESSION VOLUMETRIC RATIO OPERATING WITH E94

KEY WORDS:

Biofuel, Ethanol, Internal Combustion Engine, GT-Power, Volumetric Compression Ratio

PAGES: 103
BIG AREA: Engenharias
AREA: Engenharia Mecânica
SUBÁREA: Engenharia Térmica
SUMMARY:

According to the International Energy Agency (IEA) the transport sector is the second largest generator of greenhouse gases. For these reasons, the search for environmentally sustainable solutions for the transport sector is necessary. The electrification of the fleet pointed out by many as the solution to this environmental challenge is not as promising as it seems, since 65% of the electricity generated in the world comes from fossil sources. Statistical projections indicate that at least 73% of the light vehicle fleet in 2050 in the world will be equipped with internal combustion engines. In this context, the development of engines with high fuel conversion efficiency powered by biofuels is of paramount importance. Brazil's enormous capacity to produce ethanol, associated with its physicochemical properties that make this fuel an excellent option for powering SI engines and the availability of a distribution network for this fuel throughout the national territory make it the most interesting alternative for the Brazil. This work aims to evaluate the potential for reducing specific fuel consumption by determining the best volumetric compression ratio (rc) for an engine powered exclusively by ethanol. For this purpose a 1D numerical model using the GT-Power code was developed, for an AVL model 5496 single-cylinder experimental research engine. From experimental data this model was calibrated and validated for 3000 and 4500 RPM in the WOT condition, volumetric compression ratio of 11.5:1 operating with hydrated ethanol E94. A good agreement between the numerical and experimental results for the curve of gas pressure in the cylinder, power, and specific fuel consumption was obtained with maximum error of 7.26%, 5.75% and 6.11% respectively. For the next phase of work, other operating conditions and volumetric compression ratios will be simulated and the best rc determined.

BANKING MEMBERS:
Presidente - FERNANDO ANTONIO RODRIGUES FILHO
Externo à Instituição - JOSE GUILHERME COELHO BAETA - UFMG
Externo ao Programa - MARCIO EXPEDITO GUZZO
Interno - THIAGO AUGUSTO ARAUJO MOREIRA