The engine shown in the illustration is a...

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Question 1 of 205eccefa1bacbc34ba4d473b3

The engine shown in the illustration is a __________. See illustration MO-0020.

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Question 1 of 20

5eccefa1bacbc34ba4d473b3

The engine shown in the illustration is a __________. See illustration MO-0020.

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🔍 Key Concepts

• Difference in valve arrangements between two-stroke and four-stroke engines • Which valve (intake or exhaust) is open during the intake stroke vs the exhaust stroke • Piston and crankshaft position relative to direction of rotation to tell whether the piston is moving up or down

💭 Think About

• Look closely at the valve gear and count how many poppet valves are in the head. Does this layout more commonly match a two-stroke or a four-stroke diesel? • Note which valve is open and which is closed. During which stroke would you expect that specific valve configuration, given the direction of crank rotation shown? • From the crank angle and the rotation arrow, decide whether the piston is traveling toward top dead center or bottom dead center, and then match that to the appropriate stroke.

✅ Before You Answer

• Identify whether this engine has ports in the cylinder wall (typical of many two-strokes) or only valves in the cylinder head (typical of four-strokes) • Confirm which specific valve (intake vs exhaust) is shown open in the illustration • Verify the piston travel direction from the crankshaft rotation arrow before deciding whether the stroke is intake or exhaust

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Question 1 of 205eccefa1bacbc34ba4d473b3

The engine shown in the illustration is a __________. See illustration MO-0020.

Back

Question 1 of 20

5eccefa1bacbc34ba4d473b3

The engine shown in the illustration is a __________. See illustration MO-0020.

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

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