Which among the following zone or part of piston is subjected to highest temperature due to combustion? 

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SSC JE Mechanical 16 Nov 2022 Shift 2 Official Paper
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  1. The center of the crown
  2. Gudgeon pin 
  3. Bottom of the skirt
  4. Piston outer surface 

Answer (Detailed Solution Below)

Option 1 : The center of the crown
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Detailed Solution

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Explanation:

Crown or Head: It is the topmost portion of the piston. It is subjected to high pressure and temperature due to the combustion of the fuel.

Skirt: It is the lowest portion of the piston. It works as a guide to the piston in the bore and enables the piston to move in a straight line. The skirt has the least clearance with the liner.

Piston Rings: It is the outer grooves space made for compression and oil rings.
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