Roll No.
Total No. of Questions: 09]
B. Tech.
(Sem.-4th)
AUTOMOTIVE FUELS
AND EMISSIONS
Subject Code:
BTAE-405
Paper ID: [A1165]
Time: 3 Hrs.
INSTRUCTIONS TO CANDIDATE:
1. Section-A is compulsory.
2. Section-B Attempt any four
questions.
3. Section-C Attempt any two
questions.
SECTION-A
Q. 1.
(a) What is the effect of rich
mixture of air fuel ratio in C.I Engine.
(b) What are the disadvantages of
CNG fuel?
(c) Draw with
neat sketch Pressure-time diagram of combustion for C.I Engine.
(d) What is Sonex system for
emission control.
(e) Write any
one reason for Low CO and Hydrocarbon emission in CI Engine.
(f) How auto-igniton is responsible
for knocking in S.I Engines.
(g) What is meant by igniton delay.
(h) Draw with neat sketch NDIR
analyzer.
(i) What is chromatography?
(j) What is catalytic converter?
Section-B
Q. 2. Discus
in detail the two types of crankcase ventilation systems used in automobiles.
Q. 3. Explain
clearly how the atmospheric pollution from the carburetor and the fuel tank is
Prevented.
Q. 4. What is the problem experienced while using vegetable
oil in diesel engine.
Q. 5. Brief about bio-fuel and its characteristics.
Q. 6. Explain the performance characteristics and
limitations of the bio diesel fuel.
Section-C
Q. 7.
Describe the phenomenon of detonation or knocking in S.I Engines. How can it be
controlled?
Q. 8. Write the short notes on following:
(i) CNG fuel
(ii) SMOKE meter
Q. 9. Explain
the performance and emission characteristics of engine running on LPG.
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