Class 2 (2nd Engineer) MEKM 📅 Oct 2024

Exam Question

An auxiliary engine exhibits a tendency to hunt to such an extent that the engine speed variation prohibits the connection of the machine to the switchboard.

(a) Discuss the possible causes of hunting. (8)

(b) Explain how the problem of hunting can be rectified. (8)

Reference Answer

(a) Possible Causes of Hunting in an Auxiliary Engine:
Hunting refers to the instability in engine speed, where the engine oscillates between high and low speeds rather than maintaining a steady speed. The possible causes can be categorised into three main areas: fuel system issues, mechanical governor problems or electronic governor faults.
(i) Faults Related to the Fuel System:
Fluctuation of fuel pressure due to faulty fuel pump

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