Q7. a) Describe what is nozzle burning of fuel Injectors and causes of nozzle burning on Marine Diesel engine. (6)
b) What investigations are required to find causes for nozzle burning? (6)
c) What actions are required to reduce the risk of Nozzle Burning? (4)
Q9. a) Describe how fuel injector components deteriorate with time? (6)
b) What are effects of deterioration of fuel injector components? (6)
c) What are the signs of a bad injector? (4)
Q5.a) In Jerk type Fuel Pump, describe with diagrammatic sketch how metered quantity of fuel oil is delivered to cylinder unit? (8)
b) How is fuel injection timing changed in Jerk type Fuel pump? (4)
c) Describe effect of fuel injection time alteration on the performance of unit. (4)
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