Question

Calculate the bending moment when load is 176700N, length of bearing is 265mm, thickness is 90mm and length of crank pin is 120mm?

(a) 8.738×10^6N-mm

(b) 89.3×10^6N-m

(c) 55.21×106N-mm

(d) 45.89×10^6N-m

This question was posed to me in an online quiz.

I'm obligated to ask this question of IC Engine topic in chapter Design of IC Engine Components of Automotive Engine Design

Answer 1

Right option is (c) 55.21×106N-mm

The explanation: Mb=Pp[0.75lc+t+0.5l1]

                            =176700[0.75×120+90+0.5×265]

                            =55.21×10^6N-mm