Farm Power & Machinery

Cooling System

• Fuel is burnt inside the cylinder of an internal combustion engine to produce power and hence large amount of heat is produced inside the engine cylinder. This raises the temperature of the cylinder, piston and valves. The temperature may reach 1600 oC, which is above the melting point of the engine parts in contact. The material strength is reduced even at 150 oC. Because of heat the lubricating oil is also gets oxidized.
• So the cooling system is necessary for the engine to remove the excess heat from the engine block and to maintain the temperature of the components within the limit. The cooling system keeps the engine running efficiently. It is estimated that about 40% of the total heat produced in the engine cylinder is passed to the atmosphere by the exhaust gases, 30% is removed by cooling system and only about 30% is used to produce useful power.