Question

Why is oil cleaning is necessary in the engine?

(a) For continuous reliable operation

(b) To cool down the oil

(c) To reduce the viscosity of oil

(d) To increase thickness of oil

The question was asked in an online interview.

This interesting question is from Lubrication System, Intake and Exhaust Systems in portion Diesel Engine Plant of Energy Engineering

Answer 1

Right choice is (a) For continuous reliable operation

To explain: For continuous reliable operation attention should be given to oil cleaning. For this purpose filters with centrifuges or chemical action have been employed. Mechanical filters include cloth bags, wool, felt pads, paper discs and cartridge of porous material.