Question

Which of the mentioned below is the formula for calculating the thickness of the piston barrel at the top end?

(a) t4=(0.03D+b+4.9)

(b) t4=0.03D+b+6.9)

(c) t3=(0.03D+b+4.9)

(d) t3=0.03D+t4+4.9)

The question was posed to me by my college director while I was bunking the class.

Origin of the question is IC Engine topic in portion Design of IC Engine Components of Automotive Engine Design

Answer 1

Correct option is (c) t3=(0.03D+b+4.9)

To elaborate: The thickness of the piston barrel at the top end is given by t3=(0.03D+b+4.9) where D is the piston diameter and b is the radial width of the ring.