In a main propulsion turbocharged diesel...

Question 1 / 270705eccefa2bacbc34ba4d47af4

Question 1 of 270705eccefa2bacbc34ba4d47af4

In a main propulsion turbocharged diesel engine, the speed of the turbocharger varies according to the __________.

Question 1 of 27070

In a main propulsion turbocharged diesel engine, the speed of the turbocharger varies according to the __________.

🔍 Key Concepts

• Turbocharger function in a diesel engine and what actually drives the turbocharger • Relationship between engine load, exhaust gas energy, and turbocharger speed • Difference between governing components (like droop, speeder spring, fuel rack) and devices driven by exhaust flow

💭 Think About

• Ask yourself: What physically turns the turbocharger and makes it spin faster or slower? • When engine load increases, what happens to fuel burned, exhaust temperature/flow, and how would that affect turbocharger speed? • Which of the options are parts of the governing system versus effects of how hard the engine is working?

✅ Before You Answer

• Identify which choices (A, B, C) are related to the governor and fuel control system, not the turbocharger drive source itself. • Confirm that a turbocharger is driven by exhaust gas energy, not mechanically by the governor springs or fuel rack. • Think about how engine load changes exhaust gas volume and temperature, and how that would influence a turbine wheel connected to a compressor.

Question 1 of 27070

In a main propulsion turbocharged diesel engine, the speed of the turbocharger varies according to the __________.

governor droop

speeder spring tension

fuel rack lag

load on the engine