4. Payload Measurement and Estimation

Try these first

1. 1.

   What happens to atmospheric pressure as altitude increases?

   Hint

   Think about how thin the air gets at higher altitudes.

2. 2.

   What is the purpose of a turbocharger?

   Hint

   It forces more air into the combustion process.

3. 3.

   What effect does increasing altitude have on engine power?

   • Increases power
   • Decreases power
   • No effect

   Hint

   Consider how much oxygen is available for combustion.

4. 4.

   True or False: Struck capacity is the same as heaped capacity.

   • True
   • False

   Hint

   Think about what happens when you load a truck.

5. 5.

   A construction project is to take place at an altitude of 5,000 feet. If the manufacturer's standard horsepower rating is based on sea level conditions, calculate how much the engine's efficiency might drop and what compensatory measures can you suggest.

   Hint

   Research the typical efficiency drop at specified altitudes.

6. 6.

   You have a truck with a gravimetric capacity of 10 tons. If you decide to add sideboards to increase volumetric capacity, how may this decision impact the truck's overall performance and lifespan?

   Hint

   Consider the mechanics of weight distribution and strain on the truck's structure.