Question

Inadequate lubrication of the engine, due to oil not being warm enough to flow freely, results in greater frictional losses.

(a) True

(b) False

The question was asked in examination.

This question is from Heat Rejection in chapter Heat Rejection and Cooling of IC Engine

Answer 1

The correct answer is:

(a) True

Inadequate lubrication, due to the oil not being warm enough to flow freely, can indeed result in greater frictional losses. When engine oil is cold, it is more viscous and does not flow as easily, leading to increased friction between the moving parts. As the oil warms up to its operating temperature, its viscosity decreases, allowing it to flow more freely and reduce friction, which helps improve engine efficiency and performance.