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How Piston Works In Engine?






 A piston is one of the main component of reciprocating engines. And also Piston are employed in  reciprocating pumps, gas compressors and pneumatic cylinders, among other similar mechanisms.Pistons are commonly made of a cast aluminum alloy and various nickel-based alloys, ensuring hardness and the strength to fulfill their mission for excellent and lightweight thermal conductivity . Depending on the application, engineers will put them to the test in a pressure chamber. Most pistons are made from die- or gravity-cast aluminum alloy. Cast aluminum alloy is lightweight and has good structural integrity and low manufacturing costs.




The main Parts of Piston are as Follows:




1.Piston head

2.Piston pin bore

3.Piston pin

4.Skirt, ring grooves

5.Ring lands and

6.Piston rings.









How Piston Works?



First, it sucks the air-fuel mixture by producing vacuum pressure into the cylinder through its downward motion   then, the piston  helps to  compresses said mixture and, finally, it needs to withstand the sudden rise in temperature caused by the ignition with the help Spark Plug then a flame wave spreads through the combustion chamber at extreme speeds.While in these situation the intake and exhaust values are closed.

Of course, when all this is done, the piston has to expel the exhaust gases with help of outlet value. 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 a pump, the function is reversed and force is transferred from the crankshaft to the piston for the purpose of compressing or ejecting the fluid in the cylinder. In some engines, the piston also acts as a valve by covering and uncovering ports in the cylinder wall.


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