Question 319Motor Plants - Assistant Engineer70% to pass
A large, low-speed, main propulsion diesel engine uses sea water to directly cool the_______________.
AI Explanation
The correct answer is C) scavenging air.
In a large, low-speed, main propulsion diesel engine, the scavenging air is cooled by seawater. The scavenging air is the air that is used to purge the exhaust gases from the engine cylinders after combustion. Cooling this air helps to improve the engine's efficiency and performance.
The other answer choices are incorrect because the cylinder heads, exhaust valves, and injectors are typically cooled by a separate freshwater cooling system, not directly by seawater. The seawater is primarily used to cool the scavenging air in this type of diesel engine configuration.
Related Questions
#317 From the graph shown in the illustration, determine the size of the regulating ring required for the proper operation of the fuel oil centrifuge if the fuel oil specific gravity is 0.9 kg/dm3 at 68°F, and the separating temperature is 158°F. Illustration MO-0113 #318 Cooling the intake air supplied to a diesel engine will_______________. #320 An increase in the air inlet manifold pressure of a diesel engine will result in a/an_______________.#321 In a naturally aspirated diesel engine, the volume of air intake is directly associated with engine _______________.#322 What is the function of the aftercoolers installed in the diesel engine air intake system?