Question

In which type of air cleaner the filter element is saturated with oil?

(a) thermostatic control of air cleaner

(b) light dusty type air cleaner

(c) heavy-duty type air cleaner

(d) both thermostatic and light dusty type

I got this question during an online exam.

My doubt stems from Petrol Engine Fuel Supply System topic in chapter Petrol Engine Fuel Supply System of Automotive Engine Design

Answer 1

Correct answer is (c) heavy-duty type air cleaner

For explanation: The heavy-duty type air cleaner is also called an oil bath type wherein the filter material is saturated with oil. Impinging on the surface of the oil relieves the air further of the impurities. The final cleaning is done by a filter and clean air is passed to the engine.