Q6. with reference to a slow speed diesel engine fitted with a single turbocharger. describe, with reasons, the possible action which could be taken to enable the main engine to be operated, If whilst on oceanic passage, a small portion of one of the impeller vanes breaks off and impacted with the charge air cooler.
Q4. A. Explain the possible reasons T/C vibration while operating at a steady speed.
B. State how the incidence of turbo charger vibration might be minimized.
C. Explain the action to be taken in order to maintain 2 stroke engine operation in the event of turbo charger having to be taken out of service.
D. Indicate the effect this action will have on engine operation.
{How is the engine operation affected when operated with a by-passed T/C}
Q8. Explain why the use of residual fuels for the operation of large slow speed or of medium speed engines, may be responsible for the following problems with turbocharger nozzles, shrouds and blades and how in each, the problem may be minimized:
A. Build-up of deposits.
B. Hot corrosion.
C. Erosion (16)
Q9. Explain the modern methods of turbo charging available such as A. Pulse converter system; B. Sequential turbo charging; C. Two stage turbo charging; D. Variable geometry turbochargers.
Q1. A) Explain with a simple sketch the principle of a hybrid turbo charger, what are the advantages? What are the challenges? (8)
b) Discuss the statement in detail, “Hybrid turbo charger will improve overall plant efficiency”(8)
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