Engine parts are the essential components that work together to power vehicles and machinery. Key parts include the cylinder, where fuel and air mix and ignite, and the piston, which moves up and down to create energy. Other important parts are the crankshaft, which converts the piston's motion into rotational energy, and the camshaft, which controls the opening and closing of the engine's valves. Each part plays a crucial role in the engine's performance. The spark plug ignites the fuel-air mixture, while the fuel injector delivers the right amount of fuel. Together, these parts ensure that the engine runs smoothly and efficiently, providing the power needed for movement.