Dear Baba
A piston is a component of reciprocating engines, pumps and gas compressors. It is located in a cylinder and is made gas-tight by piston rings. In an engine, its purpose is to transfer force from expanding gas in the cylinder to the crankshaft via a piston rod and/or connecting rod.In some engines, the piston also acts as a valve by covering and uncovering ports in the cylinder wall.
All the best.
AKASH GOYAL
AskiitiansExpert-IITD
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