USCG USCG Motor
Set 10 • Question #50 of 382
Launch Interactive Practice Room Using a cooling water temperature of 225°F (107.2°C), instead of 180 F(82.2 C) in an auxiliary diesel engine will_____________.
A
reduce the probability of scale formation in the jacket cooling passages
B
reduce the opportunity for the formation of sulfuric acid in the cylinder bore exhaust passages
✓ Correct Answer
C
allow for smaller water passages within the engine
D
increase fuel consumption per horsepower hour
USCG NMC Regulatory Explanation
In USCG Motor Plants (Diesel Engineering), regarding 'Using a cooling water temperature of 225°F (107.2°C), instead of 180 F(82.2 C) in an auxiliary diesel engine will', the correct operational principle is: 'reduce the opportunity for the formation of sulfuric acid in the cylinder bore exhaust passages'.
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