Question

An engine has a bore diameter of 150mm, what is the minimum number of studs in the engine?

(a) 6

(b) 7

(c) 8

(d) 9

The question was posed to me in examination.

The origin of the question is IC Engine in section Design of IC Engine Components of Automotive Engine Design

Answer 1

Correct choice is (a) 6

Explanation: Maximum number of studs = 0.01D+4

                                                                         = 0.01×150+4

                                                                         = 5.5

5.5 studs can’t be taken so it is approximated to 6.