Final answer:
The main function of the fuel system is to supply fuel to the engine for combustion.
Step-by-step explanation:
The main function of the fuel system in an engine is to supply fuel to the engine for combustion.
The fuel system consists of various components such as the fuel tank, fuel pump, fuel filter, fuel injectors, and fuel lines.
For example, in a gasoline engine, the fuel is stored in the fuel tank and then pumped by the fuel pump to the fuel injectors, where it is atomized and mixed with air before being sprayed into the combustion chambers.