A car engine piston is a cylindrical component that moves up and down inside the engine's cylinder. Its primary function is to compress the air-fuel mixture and convert the explosive energy from combustion into mechanical motion, which eventually spins the wheels to propel the vehicle.The Four-Stroke CycleThe piston facilitates the internal combustion process by performing four distinct movements:Intake Stroke: The piston moves down, creating a vacuum to draw air and fuel into the cylinder.Compression Stroke: The piston moves up, compressing the air-fuel mixture to make it highly volatile.Power Stroke: The spark plug ignites the mixture. The resulting explosion forces the piston down with immense pressure, converting chemical energy into mechanical energy.Exhaust Stroke: The piston moves up again, pushing the leftover exhaust g