Where is the fuel burned in an internal combustion engine?

In an internal combustion engine, fuel is burned within the combustion chamber, which is typically located in the cylinders of the engine. During the combustion process, a mixture of air and fuel is compressed and ignited by a spark (in gasoline engines) or by the heat of compression (in diesel engines), producing high-pressure gases that drive the pistons. This movement ultimately converts chemical energy from the fuel into mechanical energy, powering the vehicle.