It may look old, rusty and worn but the moment this engine fires up, you can see more than a century of engineering principles come alive. In a typical four-stroke gasoline engine, the piston and valves work through a precisely timed cycle: intake, compression, power and exhaust. The air-fuel mixture enters the cylinder, gets compressed, and is ignited by the spark plug. The rapidly expanding gases then force the piston downward, converting combustion energy into mechanical motion through the crankshaft. The cutaway view makes the process especially fascinating because you can actually see components such as the spark plug, valves, valve springs and piston working together. Modern engines may be far more sophisticated, but the fundamental idea behind the four-stroke cycle remains remarkably recognizable. Could you watch an exposed engine like this running all day? #Engine #OldEngine #Engineering #MechanicalEngineering #FourStrokeEngine #InternalCombustionEngine #Piston #SparkPlug #Automotive #Mechanics #Machinery #HowItWorks #EngineeringFacts #Technology #DidYouKnow #alchetron #viral Read more : https://alchetron.com/Four-stroke-engine