AIR COOLING SYSTEM

Air cooled engines are those engines in which heat is conducted from the working components of the engine to the atmosphere directly.

Principle of air cooling- The cylinder of an air cooled engine has fins to increase the area of contact of air for speedy cooling. The cylinder is normally enclosed in a sheet metal casing called cowling. The fly wheel has blades projecting from its face, so that it acts like a fan drawing air through a hole in the cowling and directed it around the finned cylinder. For maintenance of air cooled system, passage of air is kept clean by removing grasses etc. by a stiff brush of compressed air.

Advantages of Air Cooled Engine:

1. It is simple in design and construction

2. Water jackets, radiators, water pump, thermostat, pipes, hoses are not required.

3. It is more compact

4. Lighter in weight

Disadvantages:

1. There is uneven cooling of engine parts

2. Engine temperature is generally high during working period Air cooled engine