Question

Why is the fumigation technique used?

(a) To control HC

(b) To control NOx

(c) To control CO

(d) To control smoke

I got this question in semester exam.

This interesting question is from Engine Emissions topic in division Emission Control Methods, Electric & Conventional Vehicles of Automobile Engineering

Answer 1

Correct choice is (d) To control smoke

For explanation I would say: The fumigation technique is used to control smoke. Fumigation is injecting gaseous or liquid fuel into the intake of air steam of CI engines. There are two types of smoke: hot smoke and cold smoke.