DieselShip's Online Content Library

Q1. A. Describe clearly how you would deal with a fire in the scavenge space of a marine diesel engine; Explain the cause of such fires and state the measures which can be taken to limit their occurrence?

Q2. A. State with reasons the main causes of normal cylinder liner wear; B. State TWO forms of abnormal liner wear, explaining how EACH may be caused; C. Explain how cylinder liner wear may be kept within acceptable limit

Q4. Give reasoned opinion as to the validity of the following - Hydraulic operation of fuel injectors are to be referred to mechanical operation; Combustion conditions within the cylinder are a good indication of injector condition; Inadequate fuel filtration is the principle cause of injector malfunction.

Q1. Sketch and describe a turbocharger bearing lubrication system. State the type of bearing employed and explain the advantages and disadvantages of the lubricating system described.

Q2. As a second engineer of a vessel, you are instructed to submit to the superintendent engineer a complete indicator cards together with relevant data. Give full account of your work in taking the cards and preparing them for submission. Tabulate the data you forward, both that extracted from the cards and otherwise obtained, giving typical figures taken from a motor ship.

Q3. Recent experience has shown persistence damage occurring on seating faces of main engine exhaust valve, which is not confined to any particular unit.

(a) State with reason the possible causes. (6)

(b) State the short-term action to be taken in order to minimize engine operational problem. (5)

(c) State with reason how future incident of this nature could be minimized. (5)

Q4. A. Briefly describe the causes and effects of bacterial attack of lubricating oil.

B. Bacterial activity has been detected in the lubricating oil of the main engine fitted in the ship aboard which you are serving as 2ndeng. Write a letter to the owner/operator of the ship indicating the action you intent to take and offer suggestion to the avoidance of future incidents.

Q4. Misalignment of the main shafting between engine and propeller causes bearing overloads and shaft stress;

A. State the difficulties associated with checking shaft alignment and the reasons why results are unreliable due to external factors;

B. Explain with a simple sketch how a bearing load is assessed.

C. Explain how uneven loading could be rectified

Q2. Sketch a Main Engine air starting distributor and describe how it operates.

List the safety devices and interlocks incorporated in main engine air starting system and state the purpose of each.