An air cooling system relies on air circulation over hot engine parts to dissipate heat, simplifying the engine design. Fins are added to increase heat transfer from the engine surface. Air cooling is used for small engines in motorcycles, planes, and agriculture due to its maintenance-free and lightweight properties. However, it provides non-uniform cooling and limits compression ratios due to high cylinder temperatures, with less cooling capacity than liquid cooling systems.

1. An Overview Of Air Cooling System
A reciprocating engine system works on
converting one form of energy into another. While
doing such 60-70% if the energy gets waste as
heat and if this heat is not rapidly removed then
the cylinder might get over heated and lead to
whole engine failure.

2. Air cooling is the method of dissipating heat. Air-
cooled engines rely on air circulation directly over the
hot parts of an engine to cool them. In an air cooling
system, the outer surface of the reciprocating engine is
cooled by flowing air over it. The metallic fins are cast
in order to increase the heat transfer.

3. Applications:
1) It is used in small engined automobiles like that of
motorcycles, scooters; airplanes and fighter tanks
which are high speed vehicles and gives a good
velocity to the air to cool the engine.
2) It also finds its use in small immobile engines used
for agriculture and industries.

4. Advantages:
Air cooling system simplifies the engine design.
Since no requirement of cooling pipe radiator or fan or
liquid cooling jacket, the engine weighs less.
Since the cylinder wall temperature is very high, the
power output from engine is more.
No danger of leaked coolant or freezing of coolant.
The engine can be quickly and simply installed,
assembled and dismantled.
And the engine is perhaps maintenance free.

5. Disadvantages:
Non uniform cooling of engine.
Owing to high wall temperature, the compression ratio
of the engine is limited.
Compared to water cooled engine, the volumetric
efficiency is lesser.
Creates aerodynamic sound or noise.
Since it has small capacity of heat dissipation it can be
used only in small size engines.

6. Some advantages and benefits of a LCS over air
cooling system include more efficient cooling and less
noise when the system is on run. The disadvantage is
that liquid cooling can be quite complex, costly, and it
requires more maintenance.
Our CAD CAM training institute is a big name for you
to consider for pursuing your profession in this field.

7. Thank You