Oil analysis for a crosshead type diesel...

Question 1 / 205eccefa3bacbc34ba4d47e0e

Question 1 of 205eccefa3bacbc34ba4d47e0e

Oil analysis for a crosshead type diesel engine indicates the TBN of the crankcase lubricating oil is increasing. This is most likely associated with which of the following?

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Question 1 of 20

5eccefa3bacbc34ba4d47e0e

Oil analysis for a crosshead type diesel engine indicates the TBN of the crankcase lubricating oil is increasing. This is most likely associated with which of the following?

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🔍 Key Concepts

• Total Base Number (TBN) and what an increase vs a decrease means chemically • Difference between system (crankcase) oil and cylinder oil on a crosshead diesel, including their normal TBN levels • How lube oil contamination sources (fuel, water, cylinder oil, wear metals) typically affect TBN

💭 Think About

• Ask yourself: in a crosshead engine, which of these four options could introduce a high‑alkaline oil into the crankcase and therefore raise TBN? • Consider what effect water and high purifier temperature usually have on lube oil condition—do they normally raise or lower TBN? • Think about which component listed in the options actually carries high-detergent, high-TBN additives in normal operation.

✅ Before You Answer

• Verify which oil (crankcase vs cylinder) is normally high TBN and which is closer to neutral/low TBN in a crosshead engine • Check which option involves mixing of two different lubricating oils rather than just degrading one oil • Eliminate any options that would more likely reduce TBN (acid formation, additive depletion, dilution) instead of increasing it

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Question 1 of 20

Oil analysis for a crosshead type diesel engine indicates the TBN of the crankcase lubricating oil is increasing. This is most likely associated with which of the following?

Excessive purification temperatures

Increase in the water content of the crankcase lubricating oil

Leaking stuffing boxes introducing cylinder lubricating oil into the crankcase

Bearing wear

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Question 1 / 205eccefa3bacbc34ba4d47e0e

Question 1 of 205eccefa3bacbc34ba4d47e0e

Oil analysis for a crosshead type diesel engine indicates the TBN of the crankcase lubricating oil is increasing. This is most likely associated with which of the following?

Back

Question 1 of 20

5eccefa3bacbc34ba4d47e0e

Oil analysis for a crosshead type diesel engine indicates the TBN of the crankcase lubricating oil is increasing. This is most likely associated with which of the following?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed