With regards to a diesel engine crankcase...

Question 1 / 270705eccefa1bacbc34ba4d47474

Question 1 of 270705eccefa1bacbc34ba4d47474

With regards to a diesel engine crankcase explosion, the most violent is the __________. primary explosion secondary explosion

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Question 1 of 27070

With regards to a diesel engine crankcase explosion, the most violent is the __________. primary explosion secondary explosion

🔍 Key Concepts

• Diesel engine crankcase explosions and how they develop in stages • Difference between a primary and secondary explosion inside an enclosed space • Role of flammable oil mist and crankcase relief valves in limiting damage

💭 Think About

• Think about what physically happens first when oil mist ignites in the crankcase: is pressure already built up, or is it just starting? • Consider which event would occur after hot spots have continued and pressure has had time to rise inside the crankcase. • Ask yourself: in which stage is there more accumulated gas and pressure available to be released suddenly?

✅ Before You Answer

• Clarify in your mind which event happens first in time and which happens after pressure has built up. • Recall which explosion type engine designers try to prevent from becoming violent by using crankcase relief doors/valves. • Before choosing, be sure you can explain in your own words why one stage would be more destructive than the other.

Question 1 of 27070

With regards to a diesel engine crankcase explosion, the most violent is the __________. primary explosion secondary explosion

I only

II only

both I and II

neither I or II