1. Effect of Altitude on Engine Performance

Try these first

1. 1.

   What effect does altitude have on engine horsepower?

   Hint

   Think about how air density changes with altitude.

2. 2.

   Name a device that can help engines perform better at high altitudes.

   Hint

   This device compresses incoming air.

3. 3.

   How does altitude affect engine efficiency?

   • Increases efficiency
   • Decreases efficiency
   • No effect

   Hint

   Remember how air density relates to performance.

4. 4.

   True or False: Turbochargers are used to reduce engine horsepower at high altitudes.

   • True
   • False

   Hint

   Consider what turbochargers actually do.

5. 5.

   A construction project is planned at 10,000 feet elevation. The engine has a rating of 250 HP at sea level. Calculate the horsepower loss at this altitude (using an average of 20% loss per 5,000 feet).

   Hint

   Consider the percentage loss formula based on elevation change.

6. 6.

   You are evaluating two machines for a project at a high altitude. Machine A with a turbocharger has a rated horsepower loss of 10% at 5,000 feet. Machine B without a turbocharger loses 20% at the same altitude. If both have 300 HP at sea level, determine the effective horsepower for each at 5,000 feet.

   Hint

   Calculate the adjusted horsepower by determining the percentage deduction for each machine.