FLYWHEEL
To smooth out the movement of the crankshaft and keep it rotating in between power strokes of a two- or four-cycle engine, a heavy flywheel is attached to one end, as shown earlier in l-l.
The flywheel is an important part of any engine, but it is especially important to the small gas engine. It has a raised hub (of varying designs) in the center, which the starter engages. With manual-start engines, when you pull the starter cord, you are spinning the flywheel. An electric starter, as shown in I-9, may engage the flywheel hub or spin a flywheel by means of a gear arrangement-one gear on the starter, another on the circumference of the flywheel.
Spiting the flywheel turns the crankshaft, which moves the pistons up and down and, in four-stroke engines, also turns the camshaft to operate the valves. Once the engine fires on its own, you release the starter. An on the-engine electric starter automatically disengages, forced away by the flywheel, which begins spinning much faster under power from the pistons.
The flywheel is also the heart of the small gas engine’s ignition system.Built into the flywheel circumference are several permanent magnets,which provide the magnetic force that the ignition system converts into electrical energy.
Post time: Jul-17-2023