Q3. (a) Answer the following:
(i) State why the simultaneous injection of fuel oil and starting air into a main engine cylinder is undesirable. (2)
(ii) Explain how simultaneous injection of fuel oil and starting air is prevented. (4)
(b) Answer the following:
(i) Explain how a leaking air start valve is detected while the engine is running. (4)
(ii) Describe the actions to be taken upon discovery of a leaking air start valve. (6)
Q4. With reference to main diesel engine starting air lines:
(a) Describe the main cause of a starting air line explosion. (8)
(b) Explain how a leaking start air valve can be identified while the engine is running. (4)
(c) State four different safety devices which can be incorporated into the starting air line to limit the damage caused by an explosion. (4)
Q1. Describe the procedure for preparing a main engine, from cold, for sea service (16)
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