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MEK Exit Exam • Set 2 Question 11 of 30

What condition causes high exhaust gas temperature across all cylinders of a diesel engine?

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Direct Answer

Option B: Engine overload, fouled turbocharger compressor/turbine, or restricted air intake filter

Global exhaust temperature spikes across all cylinders indicate restricted airflow or excessive thermal loading. Fouled turbocharger compressor wheels, clogged air filters, or high engine power outputs impair scavenging and combustion efficiency, resulting in elevated exhaust energy.

All Options

A
High cooling water temperature
B
Engine overload, fouled turbocharger compressor/turbine, or restricted air intake filter (Correct Answer)
C
Excessive lube oil level
D
Low fuel temperature

Detailed Explanation & Context

Global exhaust temperature spikes across all cylinders indicate restricted airflow or excessive thermal loading. Fouled turbocharger compressor wheels, clogged air filters, or high engine power outputs impair scavenging and combustion efficiency, resulting in elevated exhaust energy.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Marine Engineering Knowledge (MEK).

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