What is the function of piston pin?

  1. To prevent blow by
  2. To seal the piston
  3. To connect piston and connecting rod
  4. To oscillate in the cylinder

Answer (Detailed Solution Below)

Option 3 : To connect piston and connecting rod
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Detailed Solution

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The piston pin or gudgeon pin connects the piston with the connecting road. It should be strong enough to transmit power and withstand pressure of combustion. Piston pins are made hollow to reduce inertia load due to the reciprocating motion.

Types of piston pins

  • Fully floating piston pins
  • Semi-floating piston pins
  • Set screw type piston pins
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