Question

Which of the following helps the engine bearing by supporting the operating loads with minimum friction?

(a) Good fuel-air ratio for combustion

(b) Vibration dampers

(c) Clutch

(d) Lubricant

I got this question by my college director while I was bunking the class.

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

Answer 1

The correct answer is (d) Lubricant

For explanation: The engine bearing has main requirements like the engine bearing should support the operating loads with minimum friction using lubricant. Whereas the fuel-air ratio, vibration-dampers, and clutch do not affect the engine bearings.