Exhaust Valve: Various Cooling Methods of Exhaust Valve in I. C. Engine

The suction valve and the exhaust valve are used to complete the suction & discharge stroke in Internal Combustion Engine. A suction valve allows the fresh charge of the air-fuel mixture inside the cylinder.
This mixture is compressed and burnt by other parts. Due to the combustion process, large heat is developed and it makes the exhaust valve very hot.
This is due to burnt gases escaping from this valve to the atmosphere. As exhaust valve of an internal combustion engine is subjected to very high temperatures.
Hence it is necessary to cool it down in an engineering way for the better performance of the engine.
internal combustion exhaust valve cooling methods
  • So, Following ways, you can cool the exhaust valve,

01) By providing a suitable number of jets on the channel through which cold water directed from the radiator is pumped.

The water flowing from these jets or nozzles is in contact with the areas adjacent to the exhaust valve and exhaust port, which are thus cooled.

02) An improved cooling can also be achieved if cooling jackets are provided more elaborately near the exhaust valve and exhaust port.

03) By filling a part of the stem of this valve with sodium, you can achieve better cooling.

The solid melts at a high temperature (Near about 750-degree centigrade).

It is thrown up and down due to the motion of the exhaust valve.

The heat from the hot region is thus conveyed to the comparatively cold region.

Sodium is a good conductor of heat and has a high boiling point. (750-degree centigrade)

Hence it is more important to keep all the parts within workable limits for the better efficiency of an engine.

Besides this information, you are suggested to read something more from below engineering books

If you like the post, share it with your friends and also on social sites.

Leave a comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Battery Reconditioning Course