An increase in diesel engine crankcase...

Question 1 / 205eccefa3bacbc34ba4d47dd1

Question 1 of 205eccefa3bacbc34ba4d47dd1

An increase in diesel engine crankcase pressure generally indicates excessive __________.

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Question 1 of 20

5eccefa3bacbc34ba4d47dd1

An increase in diesel engine crankcase pressure generally indicates excessive __________.

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🔍 Key Concepts

• Crankcase pressure – what causes gases to enter the crankcase instead of staying in the cylinder • The normal path of combustion gases past the piston and rings • Difference between compression, lube oil, scavenge air, and blow‑by in a diesel engine

💭 Think About

• Think about which condition would let high‑pressure combustion gases escape from the cylinder into the crankcase space • Which of the listed pressures is actually connected to the crankcase volume, and which are in completely separate systems? • Consider what happens when piston rings or cylinder sealing are no longer doing their job effectively

✅ Before You Answer

• Identify which listed pressures are not normally routed to the crankcase at all • Recall that crankcase pressure rise usually comes from leakage of combustion gases during the power stroke • Verify which option directly describes gases passing the piston rings into the crankcase

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Question 1 of 20

An increase in diesel engine crankcase pressure generally indicates excessive __________.

compression pressure

lube oil header pressure

scavenge air pressure

piston ring blow-by

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Question 1 / 205eccefa3bacbc34ba4d47dd1

Question 1 of 205eccefa3bacbc34ba4d47dd1

An increase in diesel engine crankcase pressure generally indicates excessive __________.

Back

Question 1 of 20

5eccefa3bacbc34ba4d47dd1

An increase in diesel engine crankcase pressure generally indicates excessive __________.

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