A main propulsion diesel engine crankshaft...

Question 1 / 2066636eef28f7522a1c51fe91

Question 1 of 2066636eef28f7522a1c51fe91

A main propulsion diesel engine crankshaft bearing lacking sufficient 'crush', will __________.

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Question 1 of 20

66636eef28f7522a1c51fe91

A main propulsion diesel engine crankshaft bearing lacking sufficient 'crush', will __________.

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🔍 Key Concepts

• Bearing crush and why insert bearings are made slightly oversized • What happens to heat transfer, fit, and movement if a bearing shell is loose in its housing • Relationship between bearing fit and the tendency to move, pound, or change lubrication characteristics

💭 Think About

• Think about what ‘crush’ means in a bearing: is the shell slightly bigger or smaller than the housing, and why is that important? • If the bearing does NOT have enough crush, what physically stops it from moving when the crankshaft turns and loads change? • Would lack of crush make the bearing surface carry load more smoothly, or cause instability and movement under load?

✅ Before You Answer

• Be clear on the definition: crush = interference fit of the bearing shell in the housing cap and saddle • Ask: without enough crush, can the bearing still stay absolutely fixed in the housing under all operating loads? • Consider whether lubrication generally improves or worsens when the bearing fit is loose and can move relative to the housing.

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Question 1 of 20

A main propulsion diesel engine crankshaft bearing lacking sufficient 'crush', will __________.

tend to rotate with the journal

be lubricated more easily than with sufficient crush

pound under load

have a thicker layer of babbitt

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Question 1 / 2066636eef28f7522a1c51fe91

Question 1 of 2066636eef28f7522a1c51fe91

A main propulsion diesel engine crankshaft bearing lacking sufficient 'crush', will __________.

Back

Question 1 of 20

66636eef28f7522a1c51fe91

A main propulsion diesel engine crankshaft bearing lacking sufficient 'crush', will __________.

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