Question

Which is the bearing material which is being used in the modern engine?

(a) Brass

(b) Cast iron

(c) Aluminum

(d) Chromium

The question was asked in class test.

This question is from Valve Timing Technologies topic in portion Valve Timing Technologies of Automotive Engine Design

Answer 1

Right answer is (c) Aluminum

To elaborate: The bearing material used in modern engines is aluminum with small quantities of tin and copper, aluminum bearings are used for high load and speed conditions. However, it is more expensive due to which they are sometimes used with cheaper materials.