Question

Bearing friction is viscous in nature and does not depends upon the oil viscosity, the speed, size and geometry of the journal.

(a) True

(b) False

I had been asked this question in final exam.

I need to ask this question from Engine Friction in section Engine Friction and Lubrication of IC Engine

Answer 1

The correct answer is:

(b) False

Bearing friction is indeed viscous in nature, but it does depend on factors such as oil viscosity, speed, size, and geometry of the journal. These factors influence the formation of the oil film between the bearing and journal, thereby affecting the amount of friction and the engine's efficiency.