Question

Cast iron pistons were used in low-speed cars, why?

(a) Due to inertia force

(b) Due to low-speed piston

(c) Due to momentum

(d) Due to centrifugal force

I have been asked this question by my college professor while I was bunking the class.

The question is from IC Engine topic in section Design of IC Engine Components of Automotive Engine Design

Answer 1

Correct answer is (b) Due to low-speed piston

The explanation is: Cast iron pistons were used in low-speed cars because its piston speed is always less than 6 m/s, this speed was due to the density of piston.