In order to reverse the rotation of a...

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Question 1 of 205eccefa3bacbc34ba4d47d1b

In order to reverse the rotation of a two-stroke/cycle loop scavenged, direct reversing, propulsion diesel engine, the cam positions must be changed for the __________.

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Question 1 of 20

5eccefa3bacbc34ba4d47d1b

In order to reverse the rotation of a two-stroke/cycle loop scavenged, direct reversing, propulsion diesel engine, the cam positions must be changed for the __________.

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🔍 Key Concepts

• Direct-reversing two-stroke diesel engines and what actually has to change for ahead vs. astern operation • How camshafts and cams control timing of starting air, fuel injection, and exhaust events • The difference between systems that need different timing ahead/astern vs. systems that run the same direction regardless of engine rotation

💭 Think About

• Think about which functions must occur at different times in the cycle when the engine runs astern instead of ahead • Ask yourself: which of these components are actually timed by the camshaft and which are driven independently or continuously? • Consider a loop-scavenged two-stroke: which events must be precisely sequenced relative to piston position to get proper starting, combustion, and scavenging in both directions?

✅ Before You Answer

• Identify which listed items (starting air, fuel pumps, piston cooling pumps, exhaust valves) are cam-operated timing devices on this type of engine • Decide which systems require different timing for ahead vs. astern and which just need flow, regardless of direction • Verify in your engineering notes that piston cooling pumps and similar auxiliaries usually care about flow/pressure, not ahead/astern timing

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Question 1 of 205eccefa3bacbc34ba4d47d1b

In order to reverse the rotation of a two-stroke/cycle loop scavenged, direct reversing, propulsion diesel engine, the cam positions must be changed for the __________.

Back

Question 1 of 20

5eccefa3bacbc34ba4d47d1b

In order to reverse the rotation of a two-stroke/cycle loop scavenged, direct reversing, propulsion diesel engine, the cam positions must be changed for the __________.

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