As engine RPM is increased from idle speed...

Question 1 / 205eccefa1bacbc34ba4d4737a

Question 1 of 205eccefa1bacbc34ba4d4737a

As engine RPM is increased from idle speed to full load speed, which of the conditions listed will decrease?

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5eccefa1bacbc34ba4d4737a

As engine RPM is increased from idle speed to full load speed, which of the conditions listed will decrease?

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🔍 Key Concepts

• Behavior of lube oil pressure as engine speed and load increase • Difference between design characteristics (like compression ratio) and operating conditions (like pressures and mixtures) • How fuel and air demand change from idle to full load

💭 Think About

• Which of these options is fixed by engine design and does NOT normally change just because you advance the throttle? • Think about what your lubrication system pump does as RPM goes up—would that make pressure go up, down, or stay the same (within normal limits)? • As you add more fuel for higher power, what typically happens to the proportion of air to fuel and to peak pressures in the cylinder?

✅ Before You Answer

• Identify which items are mechanically fixed (do not vary with RPM under normal operation). • Recall the general trend of lube oil pressure vs. RPM on a healthy diesel engine. • Consider whether cylinder peak pressure at full load is normally higher or lower than at idle.

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Question 1 of 20

As engine RPM is increased from idle speed to full load speed, which of the conditions listed will decrease?

Compression ratio

Air/Fuel rati

Compression pressure

Lube oil pressure

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Question 1 / 205eccefa1bacbc34ba4d4737a

Question 1 of 205eccefa1bacbc34ba4d4737a

As engine RPM is increased from idle speed to full load speed, which of the conditions listed will decrease?

Back

Question 1 of 20

5eccefa1bacbc34ba4d4737a

As engine RPM is increased from idle speed to full load speed, which of the conditions listed will decrease?

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