Question 181Motor Plants - QMED70% to pass
In a diesel engine lube oil cooler, with sea water cooling the lubricating oil, what statement is true?
AI Explanation
The correct answer is A.
In a diesel engine lube oil cooler with sea water cooling the lubricating oil, the lube oil pressure is always kept higher than the sea water pressure. This is to ensure that in case of a lube oil cooler leak, the lube oil will leak into the sea water system rather than the sea water entering the lube oil system. If the sea water were to enter the lube oil system, it could contaminate the oil and cause damage to the engine. Therefore, if there is a lube oil cooler leak, the lube oil sump level will decrease as the lube oil is lost to the sea water system.
The other options are incorrect because they either have the pressure relationships reversed or the effect on the lube oil sump level incorrect.
Related Questions
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