In a two-stroke/cycle, opposed piston,...

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Question 1 of 205eccefa1bacbc34ba4d4739b

In a two-stroke/cycle, opposed piston, diesel engine, one crankshaft operates several crank angles in advance of the other crankshaft to __________.

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Question 1 of 20

5eccefa1bacbc34ba4d4739b

In a two-stroke/cycle, opposed piston, diesel engine, one crankshaft operates several crank angles in advance of the other crankshaft to __________.

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🔍 Key Concepts

• Opposed-piston two-stroke diesel timing – how two crankshafts are phased relative to each other • The sequence of scavenge (inlet) port and exhaust port opening and closing in a uniflow-scavenged engine • Why exhaust gases must leave the cylinder efficiently before fresh air is fully admitted

💭 Think About

• In an opposed-piston two-stroke, which ports do you generally want to open first: exhaust or scavenge/inlet, and why? • Think about the gas flow: how do you best clear (scavenge) the cylinder of burnt gases using the fresh air coming in? • If one crankshaft leads the other, what does that do to the timing of the pistons reaching their port-opening positions?

✅ Before You Answer

• Identify which ports are controlled by the leading crankshaft’s pistons (timed earlier). • Check which sequence gives effective scavenging: exhaust opening, then scavenge air admission, then exhaust closing, then scavenge closing. • Eliminate any option that would make exhaust and scavenge ports open and close exactly together, as that reduces control over gas flow.

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Question 1 of 205eccefa1bacbc34ba4d4739b

In a two-stroke/cycle, opposed piston, diesel engine, one crankshaft operates several crank angles in advance of the other crankshaft to __________.

Back

Question 1 of 20

5eccefa1bacbc34ba4d4739b

In a two-stroke/cycle, opposed piston, diesel engine, one crankshaft operates several crank angles in advance of the other crankshaft to __________.

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