EKM CH 6.0 | FUEL AND LUBRICATING OIL MANAGEMENT| MEO 4 & 5

 MOTOR ENGINEERING KNOWLEDGE

MEO CLASS 4 & 5 COMBINED

Question Bank by DoS Bangladesh

6.0 FUEL AND LUBRICATING OIL MANAGEMENT

1. (a) State the functions of lubricating oil in a diesel engine. (3) 

 (b) Describe the procedure of LO tests which are conducted on board and reasons for these tests. (7)

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 2. (a) State with reasons, where test samples should be drawn from a main lubricating oil system. (2) 

 (b) Describe the shipboard lubricating oil test to determine: (4 X 2) = (8)

 i) Water content, 

ii) Comparative viscosity 

iii) TBN 

iv) Suspended solids 

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 3. (a) What are the main objectives of cylinder lubrications? (3) 

 (b) What are the effects of incorrect cylinder lubrication? (4) 

 (c) Describe the adverse effect of using lower TBN grade of lube oil in the main engine. (3) 

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 4. Considering the main engine system oil management, describe the reasons and remedy of the followings: (4 X 2.5) = (10) 

 i) Increase in pH level, 

ii) Presence of water, 

iii) Low viscosity, 

iv) Low TBN

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5. If large amount of diesel oil had access to lubricating oil sump of an auxiliary engine: 

 (a) What are the indication and how it can be confirmed? (3) 

 (b) What is the possible source of leakage? (3)

 (c) What would be the result if the engine continued to run at this situation? (4) 

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6. (a) Briefly describe the cause and effects of bacteria attack of lubricating. oil. (6) 

 (b) What the actions to be taken in case of bacteria attack of lubricating oil? (4) 

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 7. (a) What is NOx and SOx? (4) 

 (b) How does NOx and SOx pollute the environment? How it can be prevented? (6) 

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 8. (a) Describe the safe bunkering procedure? (6) 

 (b) What is maximum bunker lift? (2) 

 (c) What are the things to be considered during bunker calculation? (2) 

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 9. (a) Describe in briefly the procedure of colleting fuel oil samples during Bunkering (4) 

 (b) Describe why fuel oil bunkering sample to be sent for lab testing before use. (3) 

 (c) What do you understand fuel oil analysis report ‘Off-specific’? (4) 

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 10. Describe the effects on the engine performance due to excess presence of following in fuel (5 X 2) = (10) i) Water, 

ii) Sulphur, 

iii) Vanadium, 

iv) Silicon v) Sodium 

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 11. (a) State the changeover procedure main engine fuel oil system from heavy fuel oil to diesel oil. (7) 

 (b) Why engine fuel system required to change over from heavy fuel oil to diesel oil? (3)

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12. (a) What is the purpose of oil record book (ORB)? (4) 

 (b) Lists the contents with Code which to be recorded in oil record book for the Fuel oil bunker. (6) 

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