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Answer the following problems in detail.

problem 1) What are two basic types of internal combustion engines? prepare down the fundamental differences between the two?

problem 2) Draw Ericsson cycle on P-V and T-S diagram.

problem 3) What do you understand by delay period? Describe in detail.

problem 4) Which has a higher sped, a SI engine of a CI engine? Why?

problem 5) How SI engines fuels are rated?

problem 6) Why very rich mixture is required for Idling?

problem 7) Describe the requirements of an Ideal injection.

problem 8) Why supercharging of CI engines is done?

problem 9) What are the different methods for measurement of brake power?

problem 10) SI engines are made of smaller size, describe why in detail?

problem 11) Describe in detail (a) Indicated thermal efficiency. (b) Mechanical efficiency and Brake thermal efficiency. What is the relation between the three?

problem 12) In an Otto cycle at 15° and 1.05 bar is compressed adiabatically until the pressure is 13 bar. Heat is added at constant volume until the pressure rises to 35 bar. Compute air standard efficiency, the compression ratio and mean effective pressure for the cycle. Take CV= 0.718, R= 0.287.

problem 13) What is the significance of delay period? Should the delay period be zero? Describe variable effecting the delay period.

problem 14) Describe the working of single jet carburetor with appropriate sketch. prepare down its limitations? Describe in detail.

problem 15) Sketch value timing diagram of two stroke and four engines and compare them with the actual.

Mechanical Engineering, Engineering

  • Category:- Mechanical Engineering
  • Reference No.:- M98903

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