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The top piston ring nearer to the piston crown is known as __________

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The top piston ring nearer to the piston crown is known as __________

(a) compression ring

(b) oil ring

(c) scrapper ring

(d) groove ring

I got this question in an internship interview.

My question is from Terminologies and Defintions in section Two Stroke Engines of IC Engine

1 Answer

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Answer: (a) compression ring

Explanation: The top piston ring, which is located nearer to the piston crown, is known as the compression ring. Its primary function is to seal the combustion chamber and prevent the escape of gases during the compression and power strokes, ensuring efficient combustion and maintaining pressure in the cylinder.

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