Write merits and demerits of air cooling system?

1.	Write merits and demerits of air cooling system?
Answer» Merits of an air-cooling system: • Air-cooled engines operate extremely well in both hot and cold climates. • Air-cooled engines are lighter than similar sized liquid/ water cooled engines. • Air-cooled engines have no coolant leakage or freezing problems. Demerits of an air-cooling system: • The large quantities of intake air passing into the cooling system can make the engine noisy. • Each cylinder has to be separately cast, whereas a rigid mono block construction is used by liquid/ water-cooled engines. • To increase the air-cooling effect, an oil heat exchanger is required to prevent overheating of the lubricant.

Answer»

Merits of an air-cooling system:

• Air-cooled engines operate extremely well in both hot and cold climates.

• Air-cooled engines are lighter than similar sized liquid/ water cooled engines.

• Air-cooled engines have no coolant leakage or freezing problems.

Demerits of an air-cooling system:

• The large quantities of intake air passing into the cooling system can make the engine noisy.

• Each cylinder has to be separately cast, whereas a rigid mono block construction is used by liquid/ water-cooled engines.

• To increase the air-cooling effect, an oil heat exchanger is required to prevent overheating of the lubricant.

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