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Flashcards in 190202b Deck (3)
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1
Q

Engines that have a positive pressure forced into the cylinder, by an exhaust driven centrifugal compressor (turbo), are called:

A

Turbocharged engines

2
Q

What the reasons an engine may be turbocharged?

A
  • It offsets the effects of decreased performance when operating at higher altitudes
  • It increases the engines power output without adding much more weight
  • It increases the power output without increasing engine size
    It compensates for varying load demands during operation
  • It decreases emissions due to an increased combustion efficiency and fuel economy
3
Q

When an engine is turbocharged, the intake air temperature increases. What effect does this have on power output?

A

It decreases engine power output as the oxygen molecules are farther apart, therefore decreasing volumetric efficiency.