Engineering · Diesel — Air Systems
Surging of a turbocharger is best described as:
- ASteady high-pitched whine at full load
- BUnstable airflow causing pulsation, noise and possible damage✓ Correct
- CNormal run-down after engine stop
- DOil mist from the air filter
Explanation
Surging is unstable, oscillating airflow through the compressor (often from fouling, sudden load change, or back-pressure). It causes pulsing noise and can damage the rotor.
Authority: Diesel Engines (USCG engineering topic)
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