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D3821
PART C
Answer any four full questions, each carries 10 marks

What is the advantage of V-TECH valve system?
Sketch and explain the valve timing diagram of a petrol engine.

Explain the different methods used to drive the camshafts in ௧௩௦170,

Describe a sodium cooled valve.

Compare engine designs OHV and 0.

Explain the function of Exhaust manifold and exhaust pipe.
What are the different types of Mufflers?

Explain any two methods used for waste heat recovery

State the applications of a Spark arrester.

Explain the working of pressurized cooling system.
Describe air cooling system.State itsapplications.

Explain wet sump lubrication system with the help of a neat sketch.
Explain the thermosyphon cooling system.

Define “lubrication”. What are the objectives of lubrication?

Briefly explain the methods for lubricating an engine?
‏بد اد‎ ೫ ‏اد‎

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