Roll No.
Total No. of Questions : 09
B.Tech. (AE)
(Sem.–4)
AUTOMOTIVE
POLLUTION AND CONTROL SYSTEMS
Subject Code :
AE-208
Paper ID : [A0712]
Time : 3 Hrs.
INSTRUCTION TO CANDIDATES :
1. SECTION-A is COMPULSORY
consisting of TEN questions carrying
TWO marks each.
2. SECTION-B contains FIVE
questions carrying FIVE marks each and
students has to attempt any FOUR
questions.
3. SECTION-C contains THREE
questions carrying TEN marks each and
students has to attempt any TWO
questions.
SECTION-A
l. Write briefly :
a) Name the main pollutant in engine exhaust.
b) What is the function of PCV valve?
c) What is a catalytic converter?
d) Which catalyst is used for reduction of Nox ?
e) What is the effect of heating the supply air on the
engine emission?
f) What are various ways of controlling exhaust emission?
g) What is the function of NDIR analyzer?
h) What is the necessity of fuel control for emission
control?
i) Why unleaded petrol is used for engine employing
catalytic converter?
j) What are the sources of automobile pollution?
SECTION-B
2. Discuss the formation of HC and CO in a 4-stroke engine.
3. Discuss the effects of operating variables on emission
formation.
4. Explain the effect of particulate emission in diesel
engine towards automotive
pollution.
5. What are emission standards? Discuss.
6. How emission is measured through smoke meters? Discuss.
SECTION-C
7. Discuss in detail the PCV system of emission control.
8. Discuss the air injection system technique of reducing
the pollutants in the
exhaust gas.
9. Write a note on Gas chromatograph.
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