Advanced IC engines important questions for AU Apr May 2020 Exams

ANNA UNIVERSITY APR MAY 2020 THEORY EXAMS

POSSIBLE QUESTIONS SET

ME 6016– ADVANCED IC ENGINES

(REG 2013)

UNIT I

1. Explain with a neat sketch of various types of fuel injection system in S.I. Engines.

2. Discuss the air fuel ratio requirements of a SI engine.

3. Explain the various factors that affecting knock in a SI engine.

4. Explain in detail about normal and abnormal combustion in SI engines.

5. Briefly explain the stages of combustion in SI engines with a P- ϴ diagram.

UNIT II

6. Explain the phenomenon of spray as penetration and spray structure in CI engine.

7. Explain the various factors that affect knock in a CI engine and explain their influence in detail.

8. Explain any two types of turbocharger used in multi-cylinder CI engine.

9. Explain with figures various types of combustion chambers used in CI engines.

10. Discuss the significance of air motion in CI engine. Also explain the significance of swirl, tumble and squish.

UNIT III

11. Explain the accepted methods of measuring the invisible emissions.

12. Explain the functioning of a three way catalytic convertor with sketch and mention the limitation of catalytic convertor.

13. With a simple sketch, explain briefly the working principle of various particulate trap methods.

14. Explain briefly selective catalytic reduction with neat sketch.

UNIT IV

15. Give a brief account of LPG being used as an alternate fuel in SI engine. Compare important properties of LPG with petrol.

16. Explain the combustion and emission characteristics of CI engine using Bio-diesel as a fuel.

17. Explain the combustion and emission characteristics of using hydrogen in a C.I engine. What are the advantages and disadvantages of hydrogen as an engine fuel?

18. Explain the combustion and emission characteristics of using alcohal in a C.I engine.

19. Explain the engine modifications needed when unconventional fuels or their blends are used in CI engine.

UNIT V

20. Discuss about HCCI engine.

21. Explain the working features of CRDI.

22. Explain hybrid electric vehicle and its types.

23. Discuss the following: (i) VGT (ii) OBD.

These are the questions expected for University exam. These may or may not be asked in exams.