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Module 6 fuel injection Flashcards

Fuel injection systems (48 cards)

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1
Q

The RSA fuel injection system uses pressure from __________________for priming ?

A

Auxiliary airframe fuel pump

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2
Q

The Bendix fuel injection system use ___________to provide impact and venturi air to the fuel regulator

A

Venturi housing

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3
Q

Movement of the throttle valve in the RSA system causes a change in engine air consumption during the run, this results in?

A

Venturi and impact air to change, causing a change in the air metering force allowing for an increase in fuel flow

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4
Q

The 4 chambers in the Bendix fuel regulator are:

A

Impact air
Venturi air
Inlet fuel
metering fuel

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5
Q

The function of the ball valve in the RSA fuel regulator is to?

A

Create a pressure differential across the metering jet

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6
Q

What are the two valve in the Bendix fuel metering unit?

A

Idle valve and mixture valve

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7
Q

What are the two jets in the Bendix metering unit?

A

Main metering jet and Enrichment jet

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8
Q

What valve is use to increase the fuel flow without throttle input?

A

Idle valve

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9
Q

To reduce the pilot work load when leaning for altitude, some Bendix (RSA) systems have ?

A

AMC Automatic Mixture Control

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10
Q

The AMC control brass bellows are connected to a ____________and are filled with ______________

A

Reverse tapered needle

Helium

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11
Q

How does the AMC work?

A

The reverse tapered needle bleeds impact air to the venturi air partially closing the ball valve

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12
Q

At altitude if the AMC bellows ruptured the mixture would ?

A

Become rich

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13
Q

What is the purpose of the constant head idle spring ?

A

Provide for idle fuel flow

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14
Q

What is the purpose of the constant effort spring?

A

Provide a smooth transition between idle and cruise power

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15
Q

The fuel pressure gauge is used with a RSA fuel injection system is connected at the ___________and measures the ________ _______cause by the fuel flow through the nozzles

A

Flow divider

Pressure drop

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16
Q

What s the purpose of the RSA flow divider?

A

Evenly distribute the fuel to the cylinders

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17
Q

The RSA flow divider uses a _____ ______ and for positive fuel cutoff to the nozzles?

A

Poppet valve

springs

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18
Q

The RSA injector nozzles are installed in the _______ port of the cylinder?

A

Intake

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19
Q

The RSA fuel injection system is a continuous flow or direct injection system?

A

Continuous flow

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20
Q

The Specific fuel flow rate, within two percent is indicated on the fuel nozzles by ?

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A

The letter on the fuel nozzles

21
Q

A fuel nozzle that has a plugged air bleed would result in?

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A

A rich mixture

22
Q

The fuel pressure indication for a plugged air bleed will be

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A

low fuel pressure

23
Q

A clogged fuel nozzle will cause

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A

A lean mixture for that cylinder and rich mixture for the remaining cylinder

24
Q

The two field adjustments that can be made on the RSA system are

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A

Idle speed and idle mixture

25
During Idle; you can tell if you have the correct mixture by?
Pulling the manual mixture control to the idle cutoff and watch for a 25 to 50 RPM rise
26
The fuel regulator houses_________and _______diaphragms?
Fuel | Air
27
The continental fuel injection systems is a:
continuous flow injection system
28
On a Continental system ,the fuel is injected:
Into the port of the cylinder
29
What are the advantage of a fuel injection system over the normal carburetor system?
- Less danger of induction system icing - Improved fuel distribution for each cylinder - The need of a separated priming system is eliminated - Better acceleration
30
The Teledyne Continental Engine driven fuel pump (EDFP) is a:
Vane-type positive (constant) displacement pump
31
The relief valve of the EDFP returns the fuel to:
To the inlet side of the pump
32
What is the purpose of the bypass valve in the continental EDFP?
Allow fuel for purging priming, emergency
33
How does the electric auxiliary airframe pump deliver fuel to the engine for starting:
The check valve in the EDFP opens during starting for priming purposes
34
The purpose of the Vapour ejector is to?
Separate the fuel vapour, and return the vapour to the airframe fuel tank
35
The variable orifice fuel pump used on a turbocharged engine senses?
Upper deck pressure by the aneroid bellows
36
What is the purpose of the variable orifice fuel pump
Prevent an overly-rich mixture upon rapid acceleration
37
The mixture valve and the fuel metering valve(throttle valve) are housed in the ?
Fuel control unit
38
What is the purpose of the Fuel manifold valve(flow divider) in the Teledyne Continental fuel injection system?
Even distribute fuel for all the cylinders
39
The fuel manifold valve uses a _____ _____ and _____for positive fuel shutoff at idle cut off?
Poppet Valve | Spring
40
Where are the two screens in the Teledyne Continental fuel injection system?
In the fuel control unit and the fuel manifold
41
Continuous flow TMC fuel systems have the injector nozzle located:
Intake port of the cylinder
42
What does the letter on the fuel nozzle indicated?
The fuel flow
43
Can the nozzles of A,B or C be arbitrarily interchange?
No
44
How is fuel vaporization accomplished in the fuel injector nozzle?
Air bleed on the nozzles
45
If the fuel injector air bleed is plugged?
That injector will run rich
46
What is the indication that the injector nozzle discharge port is plugged?
Fuel stains are found on the cylinder head
47
The fuel pressure gauge on the TCM fuel injection systems takes its reading off the _______ _________ and is _________ _____ pressure
Manifold assembly | Metered fuel
48
What are the two field adjustment that can be made on the TCM fuel injection system?
Idle speed and Idle mixture

Reciprocating Engine (10 decks)

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