Figure 3-20.Synthetic rubber oil seals.
motion. The principal moving parts are the piston
Burning of the air-fuel mixture within the cylinder
assembly, the connecting rods, the crankshaft assembly
exerts a pressure on the piston, thus pushing the cylinder
(including flywheel and vibration dampener), the
down. The action of the connecting rod and crankshaft
camshaft, the valves, and the gear train.
converts this downward motion to a rotary motion.