Fuel systems are essential components in vehicles and machinery that store and deliver fuel to the engine. They typically consist of a fuel tank, fuel pump, fuel filter, and fuel injectors or carburetors. The system ensures that the right amount of fuel reaches the engine for combustion, which powers the vehicle or equipment. In modern vehicles, fuel systems are often designed to be efficient and environmentally friendly. For example, fuel injectors precisely control the amount of fuel injected into the engine, improving performance and reducing emissions. Regular maintenance of the fuel system is important for optimal operation and longevity of the engine.