human
Can you explain how a car engine works?
assistant
An internal combustion engine is the power source for most modern cars. It consists of several components, including the engine block, cylinder head, pistons, valves, and spark plugs. The engine block contains the cylinders, which contain the piston and fuel-air mixture. The air-fuel mixture is ignited by the spark plug, causing the piston to move and creating energy that is used to turn the crankshaft, which in turn powers the car’s wheels.