Class 4 (4th Engineer) MEKG 📅 Apr 2023

Exam Question

Some of the common problems found in Auxiliary diesel generator engines can be due to,

(i) Power Imbalance, (4)

(ii) Degradation of Lubricating Oil, (4)

(iii) Exhaust gas high temperature (4)

(iv) Unusual Knocking Sound. (4)

State how to identify these problems during engine operations, and the action steps that you shall take as a watchkeeper.

Reference Answer

### (i) Power Imbalance
#### Identification During Engine Operations:
As a watchkeeper, power imbalance in an auxiliary diesel generator is identified through the following observations:
* **Instrumentation Monitoring:** Unstable readings on the main switchboard ammeter and kW meter for the specific generator. The governor may be observed hunting, causing fluctuations in engine RPM and frequency.

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