Class 4 (4th Engineer) MEP 📅 Dec 2023

Exam Question

The exhaust temperatures of an auxiliary diesel engine are found to be excessive and uneven at normal load, with dark exhaust at the funnel.

Describe EACH of the following:

(a) An investigation into the situation (5)

(b) The procedure to remedy the immediate problems (6)

Reference Answer

### (a) Investigation of the Situation
A systematic investigation is crucial to accurately diagnose the root cause of excessive, uneven exhaust temperatures and dark exhaust smoke. The approach should be logical, starting with non-intrusive checks before proceeding to actions requiring engine stoppage.
**Initial On-Load Observations & Data Collection:**
1. **Record Parameters:** Immediately record all relevant engine parameters at the current load. This includes:

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