Air Cooling is the simplest method to cool down the engine.
When the combustion of fuel takes place inside the cylinder of an internal combustion engine, a very high temperature is developed.
It is, therefore necessary to extract some of the heat from the cylinder into the atmosphere.
It will avoid damage to the cylinder and piston.
Heat also burns lubrication oil and forms carbon.
There is a possibility of seizure of piston inside the cylinder, which will lead to more breakdown and repair costs.
To avoid this, cooling is necessary for engineering utility where the temperature is generated.
Air Cooling is mostly used in motorcycles and scooters.
Because the forward motion of the machine gives a good velocity of air to cool the engine.
Air Cooling is also provided in small industrial engines.
In the bigger unit, a circulating fan is employed. But the fan absorbs 5% of the power developed by the engine.
Air Cooling is the simplest method.
Because the heat is carried out by the air flowing over and around the engine cylinder.
In this system, a current of air is made to blow past the outside of the cylinder barrel.
Whose outer surface area has been considerably increased by providing radiating fins?
The cooling fins are arranged so that they are perpendicular to the axis of the cylinder.
Air-cooled engines on average have limited size, non-uniform cooling, and higher working temperatures.
They also produce more noise, give a less petrol economy, lower maximum allowable compression ratio, and lower output.
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