PRIN. OF INTERNAL COMBUSTION ENGINES - OD1619 LESSON 1/TASK 1
FIGURE 9. TIMING GEARS AND FLYWHEEL.
(b) Ignition System. The ignition system ignites the fuel and air mixture in
the combustion chamber at the precise moment needed to make the engine run.
(c) Cooling System. The cooling system removes the excess heat from the
engine, generated by combustion.
(d) Lubrication System. The lubrication system provides a constant supply of
oil to the engine to lubricate and cool the moving parts.
(e) Flywheel (figure 9, view B). As discussed previously, for every two
revolutions the crankshaft makes, it only receives one power stroke which lasts for
only onehalf of one revolution of the crankshaft. This means that the engine must
coast through one and onehalf crankshaft revolutions in every operating cycle.
This would cause the engine to produce very erratic power output. To solve this
problem, a flywheel is added at the end of the crankshaft. The flywheel, which is
very heavy, will absorb the violent thrust of the power stroke. It will then
release the energy back to the crankshaft so that the engine will run smoothly.
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