In internal combustion engines, intake valve is used to introduce fresh charge to the cylinder and exhaust valve is used to expel burnt gases from cylinder.
Generally,intake valve is bigger than exhaust valve.The reason is explained below :
1.)The intake valve is bigger in size so that sufficient amount of charge can enter into cylinder as pressure outside is low.
2.)As the pressure after power stroke is high enough to push exhaust gases outside.So in the case of exhaust valve small opening is given.
3.)Being smaller also assists exhaust valves with keeping them cool which is important as exhaust valves often give rise to thermal problems.
Generally,intake valve is bigger than exhaust valve.The reason is explained below :
1.)The intake valve is bigger in size so that sufficient amount of charge can enter into cylinder as pressure outside is low.
2.)As the pressure after power stroke is high enough to push exhaust gases outside.So in the case of exhaust valve small opening is given.
3.)Being smaller also assists exhaust valves with keeping them cool which is important as exhaust valves often give rise to thermal problems.
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