Exam Question
An air cooler of a large two stroke marine diesel engine is showing poor performance. Suggest some measures you would initiate to rectify the problem and improve the performance. (16)
Class 4 (4th Engineer)
MEP
📅 Apr 2025
Reference Answer
Addressing poor performance in an air cooler of a large two-stroke marine diesel engine is critical for maintaining optimal engine efficiency, preventing component damage, and ensuring compliance with emission regulations. A 'Surveyor-Grade' approach requires systematic investigation, targeted rectification, and meticulous verification.
### I. Symptoms of Poor Air Cooler Performance
Before initiating rectification, it is crucial to identify the key indicators of poor performance:
* **Elevated Scavenge Air Temperature (SAT)**: Higher than specified at engine load, often the primary indicator.
### I. Symptoms of Poor Air Cooler Performance
Before initiating rectification, it is crucial to identify the key indicators of poor performance:
* **Elevated Scavenge Air Temperature (SAT)**: Higher than specified at engine load, often the primary indicator.
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