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Which type of piston rings are preferred in an engine?

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in Automotive Engine Design by (137k points)
Which type of piston rings are preferred in an engine?

(a) Oversized rings

(b) Undersized rings

(c) Thin rings

(d) Thick rings

This question was posed to me in an online interview.

Enquiry is from IC Engine in portion Design of IC Engine Components of Automotive Engine Design

1 Answer

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Best answer
Correct answer is (c) Thin rings

For explanation: Thin rings reduce the frictional losses and wear of the surface. Several thin rings have better sealing action than a few thick rings.

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