PTU Punjab Technical University B-Tech May 2019 Question Papers 4th Semester Automobile Engineering
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Roll No.
Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(AE) (2011 Onwards) (Sem.?4)
AUTOMOTIVE FUELS AND EMISSIONS
Subject Code : BTAE-405
M.code : 54126
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
1.
SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks
each.
2.
SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3.
SECTION-C contains T HREE questions carrying T EN marks each and students
have to attempt any T WO questions.
SECTION-A
1.
Answer briefly :
(a) Can one use solid fuels for automotive? If so how.
(b) What are the disadvantages of Bio-fuel?
(c) What is wood gas?
(d) What is NO formation?
(e) What is the function of EGR?
(f) What is catalyt www.FirstRanker.com
ic converter?
(g) What air fuel ratio gives best fuel economy?
(h) What is Tyre Pyrolysis oil?
(i) Write any two properties of blends.
(j) Is CO2 a pollutant? Why?
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SECTION-B
2.
Discuss the mechanism in catalytic converter.
3.
Brief about resent scenario of conventional auto fuels. Explain in detail about the effect
of combustion time and spark timing on Nitric oxide formation in spark ignition engine.
4.
How the temperature of cylinder gases and flame speed are affected by A/F ratio in C.I
engine?
5.
Explain the use of ammonia in stationary engine application.
6.
How does fuel injection help to reduce automobile pollution? Discuss.
SECTION-C
7.
Describe how proper design of combustion chamber helps to reduce exhaust emission.
8.
Write the short notes on following :
a) Methanol fuel
b) Bio diesel fuel
9.
How does an automobile contribute towards pollution of the atmosphere? Discuss various
methods to reduce the emission of pollutants in exhaust gases.
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NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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This post was last modified on 04 November 2019