Which of the indicator diagrams illustrated...

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Question 1 of 205eccefa1bacbc34ba4d473fa

Which of the indicator diagrams illustrated depicts the condition that should be corrected by the fitting of fewer or thinner shims to the connecting rod? See illustration MO-0029.

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5eccefa1bacbc34ba4d473fa

Which of the indicator diagrams illustrated depicts the condition that should be corrected by the fitting of fewer or thinner shims to the connecting rod? See illustration MO-0029.

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🔍 Key Concepts

• Indicator diagrams for diesel engines – solid line vs. dashed line (actual vs. ideal/average card) • Effect of connecting rod length (shims) on piston position at TDC and how that changes compression pressure and maximum firing pressure • Relationship between early/late combustion peak position relative to true TDC (blue dashed line) and whether clearance is too large or too small

💭 Think About

• Compare where the peak pressure of the solid line occurs in each diagram relative to the blue TDC line. In which case does the peak look like it is happening after the ideal position because the piston is slightly lower at TDC? • Think about what happens to clearance volume when you remove shims from the connecting rod. Does that move the piston closer to or farther from the cylinder head at TDC, and what does that do to compression? • Look at how the solid and dashed curves line up in height and timing. Which picture suggests that compression (before TDC) and firing pressure are both too low, indicating too much clearance that must be reduced by using fewer/thinner shims?

✅ Before You Answer

• Identify which curve is actual and which is ideal/reference in each option, and how they differ just before and after TDC. • Verify in which option the actual card indicates excessive clearance volume (low compression and firing pressure shifted later) that would be corrected by moving the piston closer to the head. • Confirm that removing shims from the connecting rod would reduce clearance and raise compression, so select the diagram that best shows the need for that correction.

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Question 1 of 205eccefa1bacbc34ba4d473fa

Which of the indicator diagrams illustrated depicts the condition that should be corrected by the fitting of fewer or thinner shims to the connecting rod? See illustration MO-0029.

Back

Question 1 of 20

5eccefa1bacbc34ba4d473fa

Which of the indicator diagrams illustrated depicts the condition that should be corrected by the fitting of fewer or thinner shims to the connecting rod? See illustration MO-0029.

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?

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