Banca de DEFESA: MARCELO SUMAN SILVA ASSIS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MARCELO SUMAN SILVA ASSIS
DATE: 07/04/2022
TIME: 09:00
LOCAL: SALA 100 - CAMPUS NOVA GAMELEIRA - CEFET-MG
TITLE:

1D NUMERICAL SIMULATION OF THE PERFORMANCE OF A SINGLE CYLINDER ENGINE WITH VARIABLE COMPRESSION VOLUMETRIC RATIO OPERATING WITH E100

KEY WORDS:

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

PAGES: 125
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 intensifying the effect, behind only the space heating sector. 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 increasing the 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 a single cylinder experimental research engine from AVL model 5496. From experimental data this model was calibrated and validated for all tested operating conditions, where the volumetric compression ratio is varied at 11.5:1, 13:1, and 15:1, operating with E100 hydrated ethanol. A good agreement between numerical and experimental results was observed. Numerical errors in performance parameters were below 5%, consistent with the experimental data, the lowest specific fuel consumption was obtained for the rc of 15.0:1.

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