B.E./B.Tech. DEGREE EXAMINATION, APRIL/MAY 2011
Sixth Semester
Mechanical Engineering
ME 2354 — AUTOMOBILE ENGINEERING
(Regulation 2008)
Time : Three hours Maximum : 100 marks
Answer ALL questions
PART A — (10 × 2 = 20 marks)
1. Write down the firing order of 4 and 6 cylinder engine.
2. Briefly explain “off road” vehicle with example.
3. Give the requirements of air fuel ratio in SI engines.
4. State the purposes of turbocharger.
5. What is the function of a catalytic converter in SI Engine?
6. Why epicyclic gears are used in overdrive units?
7. Name the types of stub axles.
8. Define “anti – roll bar”.
9. Enumerate the limitations of electric vehicle.
10. Define “transesterification process”.
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PART A
11. (a) List the various types of a frame and explain any two in detail. (16)
Or
(b) Explain engine classification based on valve arrangement with neat
diagram. (16)
12. (a) (i) With the aid of neat sketch, explain the rotary type pump. (8)
(ii) Explain the working principle of the MPFI with neat sketch. (8)
Or
(b) (i) Explain the source of pollutants from SI engine and give short note
of the pollutants. (8)
(ii) Explain the working principle of 3-way catalytic converter with
chemical reaction and diagram. (8)
13. (a) With neat sketch explain the working principle of a constant mesh gear
box. (16)
Or
(b) (i) Write short note on universal joint. (4)
(ii) Explain different type of rear axle with neat sketch. (12)
14. (a) Explain the working principle of power steering system with neat sketch.
(16)
Or
(b) With neat sketch explain the working principle of pneumatic braking
system. (16)
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15. (a) Explain the working principle of Hydrogen fueled automobile with neat
sketch. (16)
Or
(b) With simple sketch explain the construction and working principle of fuel
cell. (16)
