Fuel injection systems are essential components in modern internal combustion engines. They deliver the precise amount of fuel into the engine's combustion chamber, ensuring optimal performance and efficiency. By using sensors and electronic controls, these systems can adjust the fuel-air mixture based on various factors, such as engine temperature and load, which helps improve fuel economy and reduce emissions. There are different types of fuel injection systems, including port fuel injection and direct fuel injection. Port fuel injection sprays fuel into the intake manifold, while direct fuel injection injects fuel directly into the combustion chamber. Both systems aim to enhance engine performance and meet environmental regulations.