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Abstract(s)
A busca por maior eficiência e desempenho em motores de combustão interna tem
impulsionado a investigação de diversas técnicas de sobrealimentação. Nesse contexto,
esta dissertação aborda a sobrealimentação de um motor a 4 tempos monocilíndrico,
Honda GX50 por meio da construção e acoplamento de um compressor centrífugo de
pequenas dimensões. O objetivo principal é avaliar os efeitos desta modificação no
desempenho do motor, incluindo ganhos de potência e binário, bem como seu impacto
no consumo de combustível e na pressão de admissão.
A dissertação começa com uma revisão abrangente da literatura, explorando os
fundamentos da sobrealimentação, os diferentes tipos de compressores e suas
aplicações. Em seguida, são apresentados os detalhes da metodologia experimental,
incluindo a construção e adaptação do compressor centrífugo para o motor Honda GX50.
O processo de acoplamento e as modificações necessárias no sistema de admissão são
discutidos em profundidade. Os ensaios foram realizados num ambiente controlado com
todas as medidas de segurança necessárias. Os resultados obtidos foram comparados
com os dados de desempenho do motor no estado original, destacando os ganhos
significativos de potência e binário alcançados por meio da sobrealimentação.
Em conclusão, a dissertação demonstra que a construção e acoplamento de um
compressor centrífugo podem efetivamente melhorar o desempenho do motor a 4
tempos Honda GX50. No entanto, também destaca a complexidade envolvida na
adaptação e otimização deste sistema. Esta pesquisa contribui para o conhecimento
sobre sobrealimentação de motores de pequenas dimensões e oferece perspetivas
valiosas para futuros desenvolvimentos nesta área.
The search for greater efficiency and performance in internal combustion engines has driven the investigation of various supercharging techniques. In this context, this dissertation addresses the supercharging of a single-cylinder 4-stroke engine, the Honda GX50, through the construction and coupling of a small-sized centrifugal compressor. The primary objective is to evaluate how this modification affects the engine's performance, including power and torque improvements, as well as its impact on fuel consumption and intake pressure. The dissertation begins with a comprehensive literature review, exploring the fundamentals of supercharging, several types of compressors, and their applications. Next, the details of the experimental methodology are presented, including the selection and adaptation of the centrifugal compressor for the Honda GX50 engine. The coupling process and the necessary modifications to the intake system are discussed in detail. The tests were conducted in a controlled environment with all necessary safety measures in place. The obtained results were compared with the original engine performance data, highlighting the significant power and torque gains achieved through supercharging. In conclusion, the dissertation demonstrates that the construction and coupling of a centrifugal compressor can effectively enhance the performance of the Honda GX50 4- stroke engine. However, it also emphasizes the complexity involved in adapting and optimizing this system. This research contributes to the knowledge of supercharging small-sized engines and provides valuable insights for future developments in this field.
The search for greater efficiency and performance in internal combustion engines has driven the investigation of various supercharging techniques. In this context, this dissertation addresses the supercharging of a single-cylinder 4-stroke engine, the Honda GX50, through the construction and coupling of a small-sized centrifugal compressor. The primary objective is to evaluate how this modification affects the engine's performance, including power and torque improvements, as well as its impact on fuel consumption and intake pressure. The dissertation begins with a comprehensive literature review, exploring the fundamentals of supercharging, several types of compressors, and their applications. Next, the details of the experimental methodology are presented, including the selection and adaptation of the centrifugal compressor for the Honda GX50 engine. The coupling process and the necessary modifications to the intake system are discussed in detail. The tests were conducted in a controlled environment with all necessary safety measures in place. The obtained results were compared with the original engine performance data, highlighting the significant power and torque gains achieved through supercharging. In conclusion, the dissertation demonstrates that the construction and coupling of a centrifugal compressor can effectively enhance the performance of the Honda GX50 4- stroke engine. However, it also emphasizes the complexity involved in adapting and optimizing this system. This research contributes to the knowledge of supercharging small-sized engines and provides valuable insights for future developments in this field.
Description
Keywords
Binário Compressor Consumo Específico Difusor Motor a 4 Tempos Potência Pressão
Manométrica Razão de Compressão Rotor Sobrealimentaç1ão Voluta