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Which of the is caused due to excess of end gap?

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in Automotive Engine Design by (137k points)
Which of the is caused due to excess of end gap?

(a) Blow by and rapid wear

(b) Scuffing and rapid wear

(c) only rapid wear

(d) Both blow bye and scuffing

I had been asked this question in final exam.

My question is from Engine Components in section Basic Engine Components of Automotive Engine Design

1 Answer

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Right answer is (d) Both blow bye and scuffing

Best explanation: The amount of end gap has to be determined cautiously. Excessive end gap would result in blow-by and scuffing of the ring. On the other hand,the lesser the clearance would cause the ring ends to butt at high temperature resulting in non-uniform pressure.

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