Sistemas de alimentação para motores ciclo otto: um estudo comparativo entre carburador, injeção eletrônica direta e indireta de combustível

Abstract

This study aimed to compare the fuel delivery systems used in Otto cycle engines. The study focuses on the three main fuel delivery systems used in the industry: carburetor, direct electronic injection, and indirect electronic injection. The comparison considered various aspects such as fuel consumption, noise, emissions, power, and cost-effectiveness. The research is important as it can help identify the most efficient fuel delivery system for Otto cycle engines, leading to reduced fuel consumption, improved performance, and lower emissions. To conduct this study, a literature review was carried out from June 2022 to June 2023, and consumption and noise tests were performed to analyze the differences between the systems. It was found that each fuel delivery system has its advantages and disadvantages. Carburetor systems are simple and low-cost but less efficient than injection systems. Electronic injection systems are more complex and expensive but offer better performance and approximately 50% greater fuel efficiency. Direct injection is more advanced and costly but also provides a power gain of about 5% compared to conventional electronic injection. Therefore, it can be concluded that the choice of fuel delivery system will depend on the specific application and engine requirements.