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9 Cards in this Set
- Front
- Back
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Why does ice form in the throat of a float carburetor? |
As the liquid fuel evaporates it absorbs enough heat from the air to cause moisture to condense out and freeze. |
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Does the application of carburetor heat cause the fuel-air mixture to become richer or leaner? |
Becomes richer as less dense air or heated air changes the fuel,/air mixture as less dense air mixes with the same amount of fuel from the carburetor. |
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What happens to engine RPM when the carburetor heat is applied? |
RPM drops. |
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Why should the use of carburetor heat be limited when operating an engine with the aircraft on the ground? |
The air that flows into the engine when the carburetor heat is applied is not filtered. |
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Why is a fuel-injected reciprocating engine not as prone to icing as an engine equipped with a float carburetor? |
The liquid fuel evaporates in the intake valve chamber of the hot cylinder head of a fuel-injected engine. |
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How is ice prevented from forming on nose cowl, nose dome and inlet guide vanes of a turbine engine? |
Hot compressed bleed air flows through the passages in this components to keep them too warm for ice to form. |
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What does a fuel-injected engine have that prevents the loss of induction air if the air inlet filter should become covered with ice? |
An alternate air valve allows warm air from inside the engine cowling to flow into the fuel metering system. |
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What would be the effect on an engine operation of an air leak in the intake pipe for one cylinder? |
The Cylinder would run lean and detonation could occur. |
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Why is it very important that the induction air filter be kept clean and replaced as often as the manufacturer recommends? |
Clogged air filters can restrict the air entering the engine. |
