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What is the l/d ratio for the crank pin?(a) 1 to 2.5(b) 1.5 to 1.9(c) 1.25 to 1.5(d) 1.67 to 1.9This question was addressed to me in an online interview.Origin of the question is IC Engine in division Design of IC Engine Components of Automotive Engine Design

Answer»

Right option is (c) 1.25 to 1.5

To ELABORATE: The allowable bearing pressure for the crankpin bush is usually taken from 5 to 10MPa, for this VALUE the l/d RATIO of crankpin is from 1.25 to 1.5.



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