On a medium-speed main propulsion diesel...

Question 1 / 205eccefa2bacbc34ba4d4793e

Question 1 of 205eccefa2bacbc34ba4d4793e

On a medium-speed main propulsion diesel engine, the crankpin or crank journal bearings receive lubricating oil from __________.

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Question 1 of 20

5eccefa2bacbc34ba4d4793e

On a medium-speed main propulsion diesel engine, the crankpin or crank journal bearings receive lubricating oil from __________.

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🔍 Key Concepts

• Medium-speed main propulsion diesel engines and how their crankshafts are constructed • How lubricating oil is delivered specifically to crankpin/crank journal bearings in larger engines versus small/simple engines • The difference between splash, jet, and pressure-fed (drilled passage) lubrication systems

💭 Think About

• Think about the size and power of a medium-speed main propulsion engine. Would a simple splash system be reliable enough for its crankpin bearings? • Which of the listed systems allows oil to be delivered under pressure directly to the highly loaded crankpin and journal bearings? • On a large or medium-speed marine diesel, how is oil usually routed from the main bearings to the crankpins?

✅ Before You Answer

• Identify which option is normally used on small/simple engines versus large/medium-speed marine diesels • Consider which method ensures continuous, positive (pressure) lubrication to the crankpins regardless of engine speed or load • Ask yourself which method is most compatible with an engine-driven lube oil pump feeding through the crankshaft structure

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Question 1 of 20

On a medium-speed main propulsion diesel engine, the crankpin or crank journal bearings receive lubricating oil from __________.

a spindle lubricator

an oil jet

internal splashing

drilled passages in the crankshaft

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Question 1 / 205eccefa2bacbc34ba4d4793e

Question 1 of 205eccefa2bacbc34ba4d4793e

On a medium-speed main propulsion diesel engine, the crankpin or crank journal bearings receive lubricating oil from __________.

Back

Question 1 of 20

5eccefa2bacbc34ba4d4793e

On a medium-speed main propulsion diesel engine, the crankpin or crank journal bearings receive lubricating oil from __________.

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