The lower cylindrical portion of the piston which improves piston cooling performance is called?

LohaHridoy
  1. Piston crown
  2. Connecting rod
  3. Piston pin boss
  4. Piston skirt

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AhmedNazir

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Answer: Option 4

The piston skirt is the cylindrical walls of a piston. During manufacture, the surface of the piston skirt is left slightly rough which helps retain lubrication. The piston skirt acts as a guide as the piston goes up and down in the cylinder.

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