Question

Which of the mentioned below is used to calculate the thickness of the piston head based on heat dissipation?

(a) th=\(\frac{T}{12.56K(T_c-T_e)}\) × 10^3

(b) H=\(\frac{H}{12.56K(T_c-T_e)}\) × 10^3

(c) th=\(\frac{H}{12.56K(T_c-T_e)}\) × 10^3

(d) th=\(\frac{m}{12.56K(T_c-T_e)}\) × 10^3

I have been asked this question in an internship interview.

Origin of the question is IC Engine in chapter Design of IC Engine Components of Automotive Engine Design

Answer 1

Right choice is (c) th=\(\frac{H}{12.56K(T_c-T_e)}\) × 10^3

Explanation: th is the thickness of the piston head, H is the Heat conducted, K is thermal conductivity factor, Tc-Te is the temperature from the center to edge of the piston. When all these are summed, we get th=\(\frac{H}{12.56K(T_c-T_e)}\times 10^3\).