🔍 Key Concepts

• Turbocharger surging involves unstable airflow with rapid pressure and flow reversals • Think about what a watchkeeper can detect quickly and directly without instruments • Consider which sign would be the earliest and most obvious indicator of a cyclic surge event

💭 Think About

• When a turbocharger surges, what happens to the airflow and compressor operation, and how would that MOST noticeably present itself to someone standing nearby? • Out of sound, sump oil level, charge air temperature, and exhaust temperature, which one would realistically change rapidly and cyclically in step with each surge cycle? • Which option describes something you could detect almost immediately, without waiting for a gauge or level to respond?

✅ Before You Answer

• Which parameter can show fast, cyclic fluctuation in real time during each surge pulse? • Which of these could you reliably monitor by human senses alone while standing next to the turbocharger? • Which options describe changes that would be too slow or too damped to show obvious rapid cycling from individual surges?