Reg. No. :

P 1336

B. E./B. Tech. DE GREE EXAMINATION, NOVEMBER/DE CEMBER 200 7.

Eighth Semester

Mechanical Engineering

ME 437 - AUTOMOBILE ENGINEERING

Time : Three hours Maximum : 100 marks

Answer ALL questions.

PARTA- (10x2=20marks )

1. What is a square engine? What is the special characteristic of square enginewhen compared with conventional engine?

2. Name the prominent material for the manufacture of Valves and Valve seatinserts.

3. List out the main functions of a battery.

4. What are the requirements of a spark plug?

5. List out the functions of a propeller shaft.

6. Why epicyclic gears are used in overdrive units?

7 . What are the effects of unbalancing in wheels?

8. Draw at least any two types of stub axles.

9. What is the general composition of Natural gas?

10. Enumerate the Disadvantages of Electric car.

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P A R T B - ( 5 x 1 6 = 8 0 m a r k s )

11. (a) (i) Define power balance and explain about Mechanical balancingaspect of engine balancing. (8)

(ii) List out the functions of frame in an automobile and explain anyone type of semi integral frame. (8)

(b)

Or

(i) with the aid of neat sketch, explain the use of Gas Turbine forautomobile use. (8)

(ii) Explain how the emission from automobiie engines can becontrolled. (8)

(i) Explain the construction and working of Solex carburetor. (10)(ii) compare the saiient features of contact breaker ignition with

electronic ignition. (6)

Or

(i) Explain the role of cut out reiay in generator control mechanism. (8)

(ii) Schematically explain the electronic fuel injection system. (8)

(i) List out the requirements of a Clutch. @)(ii) Explain the working of Wilson epicyclic gear box. Q2)

Or

(i) Explain the construction and operation of a Differential. (8)

(ii) With the aid of neat sketch, explain the Hotchkiss drive. (8)

(i) List out the advantages of front independent suspension system. (6)(ii) Explain the construction and working of recirculating ball steering

12. (a)

13. (a)

74. (a)

(b)

(b)

(b)

gearbox.

Or

(i) Explain the construction and working of vacuumsystem.

(ii) List out desirable properties of tyre.

(10)

selvo braking(10)(6)

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15. (a) (i) Discuss the usage of Hz as alternate fuel in automobile industry.(10)

(ii) Enumerate the advantages and disadvantages of fuel cells. (6)

(b) (i) Schematicallyhybrid system.

Or

explain the series and parailel configuration of

(ii) Write short notes on constraints in CNG.

(12)(4)

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