NEED FOR FLYWHEEL IN ENGINES EXPLAINED !!

The internal combustion engine has four stages in a single combustion cycle. Stage 1 is the suction, stage 2 is compression, stage 3 is combustion, and stage 4 is exhaustion. Out of these four stages, the combustion stage is the only one which really produces the power at all. But that does not mean the engine only works for that cycle, the engine has to constantly and seamlessly deliver power to the parts to keep the bike moving at all times. This is applicable generally to single cylinder engines as in case of multi-cylinder engines, the combustion stages can be timed in a proper fashion to ensure consistent power delivery to the bike.

The need for constant power delivery needs a solution, and here is where a Flywheel comes handy. Every engine comes equipped with a flywheel which is a large and heavy piece of metal which can hold and release energy within itself. The functioning of the flywheel is fairly simple. At the time of combustion when the piston generates energy and the crankshaft moves, the flywheel connected to the crankshaft also receives power and starts moving. Being heavy in nature it does require an extra bit of energy to get it moving, but once in motion is can go on for a substantial amount to ensure the bike is never short of power when in motion.

Once the flywheel gets moving, it assists the bike to maintain speed and provide a consistent flow of energy to the rear wheel of the bike to keep the speed going and maybe even keep accelerating during the subsequent non-power generating phases of the engine. This is the reason why when you are riding you do not experience any power loss in between and are able to ride smoothly and in a linear manner.