Induction Systems Flashcards

(28 cards)

1
Q

How does induction icing affect engine performance

A

Reduced power and possible erratic operation

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2
Q

How is induction icing categorized

A

Impact, fuel evaporation , and throttle ice

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3
Q

What causes fuel evaporation ice

A

A decrease in air temperature

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4
Q

What is the common method used to prevent induction system ice in reciprocating engine

A

Raise the temperature of induction air

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5
Q

What may be the indication of leaking intake pipes

A

Engine runs rough at low r.p.m

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6
Q

What happens if carburetor heat is applied at high engine power settings

A

Detonation.

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7
Q

Is carburetor throttle ice more likely to occur at a higher or lower power setting? Why?

A

At a lower power setting because the throttle is partly closed, offering a larger surface area for ice accumulation

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8
Q

What could happen if the induction system becomes obstructed

A

Engine may not produce it’s rated power or it may not run at all. This may also mean that there is a dirty air inlet filter

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9
Q

What are two types of supercharged induction systems

A

Internally driven and externally driven

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10
Q

What is used to power a turbocharger

A

Engine exhaust gas directed onto the turbocharger turbine

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11
Q

What function does a turbocharger wast gate perform

A

Controls the amount of exhaust gas into or around the turbocharger

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12
Q

What could cause a turbocharged engine to surge

A

Wast gate or controller malfunction

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13
Q

Where are bellmouth inlet ducts typically found

A

On helicopter engines

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14
Q

What are the most common methods used for anti icing of turbine engine inlet ducts

A

Engine bleed air and electric heated elements

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15
Q

In a pressurized reciprocating aircraft what component in the turbocharger system is used to limit the amount of turbocharger airflow used for cabin pressurization

A

Sonic Venturi

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16
Q

What are the most common ways to control a waste gate

A

Mechanically with linkages to the throttle or a separate control, or by a actuator that is driven by oil pressure

17
Q

What method is used to remove or prevent induction ice in a reciprocating engine

18
Q

How is some ice removed from aircraft induction systems if the carburetor heat is too low to clear the ice

A

Alcohol or Mersol, is sprayed into the induction system ahead of the carburetor.

19
Q

What engine indication can be the result of a dirty air filter

20
Q

What are two general classifications of superchargers used in reciprocating engine induction systems

A

internally driven or externally driven

21
Q

What unit regulates the amount of exhaust gases to the turbine of a turbocharger

22
Q

What type of power is used to control the position of the turbocharger waste gate on some engines

A

Oil pressure to an actuating piston

23
Q

What can cause a waste gate to stick

A

carbon build up

24
Q

What happens to the engine RPM when carburetor heat is applied

25
Why should the use of carburetor heat be limited when operating an engine with the aircraft on the ground
Air that flows into engine is not filtered air
26
What would be the effect on engine operation of an air leak in the intake pipe for one cylinder
Cylinder would run lean and detonation could occur
27
Why is it very important that the induction air filter be kept clean and replaced as often as manufacturer recommends
Clogged air filters can restrict the air entering the engine
28
Name three components on the induction system of a reciprocating engine
Air scoop, fuel delivery system and intake manifold