Fuel systems are essential components in vehicles and machinery that store and deliver fuel to the engine. They consist of various parts, including the fuel tank, fuel pump, fuel filter, and fuel injectors. These systems ensure that the right amount of fuel reaches the engine for efficient combustion, which powers the vehicle. In addition to traditional internal combustion engines, modern vehicles may also use fuel cells or electric powertrains. Each type of fuel system is designed to optimize performance, reduce emissions, and improve fuel efficiency, making them crucial for both environmental and economic reasons.