What are the cylinder-like parts that pump up and down within the engine?

Pistons are the cylinder-like parts that move up and down within the engine. These components play a crucial role in the engine's operation by creating a high-pressure environment that compresses the air-fuel mixture for combustion. As the fuel ignites, the piston moves downwards, transferring the energy generated to the crankshaft through a connecting rod. This motion drives the engine and ultimately produces the necessary power for vehicle propulsion. Due to their essential function, pistons are carefully designed and manufactured to withstand high temperatures, pressure, and repetitive movements.