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Vk.com/English.Odessa
Interview questions for engineers
1. What are duties of watch engineer?
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2. What types of diesel engine do you know? Whattypesofblowing?
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3. What type of engine did you have on your last contract?
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4. What was engines horse power?
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5. What was daily fuel consumption?
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6. What breakdowns did you have during your last contract?
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7. What maintenance works must be done for engine. Whatinterval?
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8. What can be the cause if engine doesnt start?
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9. What must you do if viscosity of oil is too high?
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10. What are your actions if there is water in fuel?
11. What will you do if engine slows down/runs fast?
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12. What tools do you use for your work?
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13. What are reasons of ignition in under piston space? What are your actions in case of ignition? How to minimize possible concequences?
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14. What types of indicator diagrams do you know?
The indicator diagram is very important to know the combustion in the cylinder and also to adjust the engine.
The diagram is taken periodically from the indicator valve equipped on he cylinder head and combustion condition is to be confirmed.
The compression pressure and maximum pressure in the cylinder can be presumed from the indicator diagram.
Engine indicator is the device used to take the indicator diagram, which can be considered as a stethoscope for diesel engines.
Indicator diagrams give efficiency of combustion in the cylinder, condition of the running gear, irregularities in fuel pumping and injection and a lot of things.
Pcom Compression Pressure
Pmax Maximum Pressure
There are 4 types of indicator diagrams that can be taken from the engine cylinder to know the condition and performance of the engine.
1. Power card / Power indicator diagram
2. Compression diagram
3. Draw card / Out of phase diagram
4. Light spring diagram
The area of indicator diagram is calculated by
Planimeter (Usually used on board)
Mid Ordinate Method
Power Card
Power card is taken with the indicator drum rotating in phase with the piston movement
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The area within this diagram represents the work done during one complete cycle to scale
Mean Indicated Pressure (MIP) is obtained from this diagram to calculate power produced in the cylinder
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POWER CARD
Compression Diagram
Compression diagram is taken in similar manner to the power card but the fuel shut off in the cylinder
The height of this curve shows maximum compression pressure
If the compression and expansion line coincide, it indicates that indicator is correctly synchronized with the engine
- Reduction in height of this diagram shows low compression which may be due to worn cylinder liner, faulty piston rings, insufficient scavenge air or leaky exhaust valve
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COMPRESSION DIAGRAM
Draw Card / Out of Phase Diagram
Draw card is taken in a similar manner to power card with fuel pump engaged but with the indicator drum 90 degree out of phase with the piston stroke
This diagram illustrates more clearly the pressure changes during fuel combustion. Fuel timings or injector faults may be detected from its shape
Draw Card /
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DRAW CARD
Light Spring Diagram
Light spring diagram is taken similar to the power card and in phase with the engine and with a light compression spring fitted to the indicator
This diagram shows pressure changes during exhaust and scavenge to an enlarged scale
It can be used to detect faults in these operations
Light Spring
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LIGHT SPRING DIAGRAM
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15. How to calculate power of engine?
16. Describe process of injection of fuel into cylinder?
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17. What preparations must be done before starting the engine?
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18. What types of high pressure pumps do you know?
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19. What types of governors do you know?
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20. What are main characteristics and grades of fuel used for diesel engines?
21. How does property of fuel influence work of engines? How to choose temperature of heating if there is different value of viscosity?
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22. Describe work of fuel oil system.
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23. System of compressed air on the vessel. How many starts and reverses of main engine must system provide?
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24. Describe the procedure of preparation to start engine?
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25. What types of boilers do you know?
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26. What are signs of leakage? Describe the process of preparation and analysis of boiler water? Analysis of boiler water on chlorides, hardness, alkalinity. How to monitor condition of boiler.
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27. What are main types and principles of actions of ships pumps?
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28. What are types and principles of work of stuffing boxes? Describe the construction of mechanical stuffing boxes of pumps.
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29. What types of refrigerator units are you familiar with?
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30. What are main components of hydraulic systems?
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31. What is the principle of work of fuel oil separators?
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32. What types of compressors do you know. Describe the principle of their work. How to start compressors? What are the requirements to lubricating oil for compressors?
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33. What is the principle of work of bilge separator. What are requirements of MARPOL regarding bilge water separator?
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34. What is oil record book? What information must be recorded in it?
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35. What is night order book? How is it used?
Night Order Book, Standing Orders. ?
36. How are lubricating oils classified? What are their main characteristics? How does lubricating oil system work?
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37. What parts does incinerator consist of?
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38. What preparations must be done before starting bunkering operation?
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39. What information must you put in pre-bunkering plan?
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40. What items must you check according to bunkering check list?
bunkeringchecklist?
41. What equipment must be prepared on deck?
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42. Until what amount must we fill tanks. What per cent?
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43. What must you do after bunkering operation is completed?
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