Practice Cycle Time And Productivity Implications (3.3) - Effect of Altitude on Engine Performance

Practice: Cycle Time and Productivity Implications

Lesson 3.3Effect of Altitude on Engine Performance

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11 questions

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5 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
5 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What happens to air density at higher altitudes?
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Think about how this might affect combustion.
Question 2.
Name a device used to improve engine efficiency at higher altitudes.
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What device compresses air for combustion?
3Question 3.
How does altitude affect engine performance?
- Increases air density
- Decreases air density
- Has no effect
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Consider what happens when you climb mountains.
4Question 4.
True or False: Using turbochargers improves engine performance at high altitudes.
- True
- False
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What do turbochargers do?
Question 5.
Calculate the effective usable power for a construction machine when given the gross power output and the losses incurred from altitude and resistance. The gross power is 200 HP, with losses at 30 HP due to altitude and resistance issues.
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What do we subtract from the total power?
Question 6.
If a performance chart indicates that a machine can achieve 90% efficiency at sea level but only 70% at a high altitude, what are the potential implications for productivity over continuous operation?
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Consider the efficiency implications over time!

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