Piston 2 - Week 4A
What is one of the advantages of a fuel injection system over carburetion? #2
Improved engine speed capabilities
Improved acceleration
Less danger of fuel contamination
More reliable engine idling
What is one of the advantages of a fuel injection system over carburetion? #1
Lower combustion temperatures
Less danger of fuel contamination
Less danger of induction system icing
Faster fuel combustion
What is one of the advantages of a fuel injection system over carburetion? #3
More reliable engine idling
Improved engine speed capabilities
Reduced cylinder overheating due to more even air distribution
Reduced cylinder overheating due to more even fuel distribution
What is one of the advantages of a fuel injection system over carburetion? #4
More reliable engine idling
Reduced cylinder overheating due to more even air distribution
Better fuel economy
More engine power
What is added to the fuel to improve vaporization in the RSA fuel injection system?
Tetraethyl lead
Air
Alcohol
Engine oil
Where is the fuel sprayed in an RSA fuel injection system?
Into the intake valve chamber, just in front of the valve
Into the intake valve chamber, just behind the valve
Into the combustion chamber, just between the spark plugs
Into the exhaust valve chamber, just behind the valve
Why does fuel vaporization take place in the intake valve chamber in the RSA fuel injecton system?
Because the intake valve chamber is cold, so there is no possibility of fuel vaporization
Because the intake valve chamber is hot, so there is no possibility of ice forming
Because the intake valve chamber is hot, so there is no possibility of fuel boiling
Because the intake valve chamber is cold, so there is no possibility of ice forming
What kind of fuel injection system is the RSA system?
A continuous flow high pressure system the provides fuel to the nozzles installed just outside the intake valve
An on demand high pressure system that provides fuel to the nozzles installed in the cylinder head spraying directly into the cylinder
An on demand low pressure system that provides fuel to the nozzles installed just outside the intake valve
A continuous flow low pressure system that provides fuel to the nozzles installed just outside the intake valve
Where does fuel vaporization take place in the RSA fuel injection system?
In the hot intake valve chamber
In the venturi housing
In the fuel metering unit
In the cold intake valve chamber
Which of the following is a part of the RSA fuel injection system? #2
The accelerator pump
The float bowl
The needle valve
Venturi housing and fuel metering unit
Which of the following is a part of the RSA fuel injection system? #5
The fuel nozzle
The economizer pump
The needle valve
The accelerator pump
Which of the following is a part of the RSA fuel injection system? #1
The main discharge nozzle
The idle nozzles
The float assembly
The engine driven pump
Which of the following is a part of the RSA fuel injection system? #3
The economizer valve
The servo regulator
The needle valve seat
The accelerator pump
Which of the following is a part of the RSA fuel injection system? #4
The accelerator pump
Flow divider
The needle valve
The economizer pump
In the RSA system, what is used to provide differential pressures to determine fuel flow?
A double venturi and 4 impact tubes
A single venturi and 4 impact tubes
A single venturi and 2 impact tubes
Metered and unmetered fuel pressures
In the RSA system, what is the venturi housing made from?
Composites
Mangnesium
Aluminum
Steel
In the RSA system, how many venturis are there normally?
One
None
Three
Two
In the RSA system venturi housing, where is the throttle valve located?
Before the venturi
Perpendicular to the venturi
After the venturi
Parallel to the venturi
In the RSA system, what will happen as the idle valve closes?
Less fuel will be delivered to the engine
More fuel will be delivered to the engine
More air bleed will occur, reducing fuel flow to the engine
Less air bleed will occur, increasing fuel flow to the engine
What colour is the throttle control knob?
Black
Red
Blue
White
In the RSA system, what will happen as the idle valve opens?
Less fuel will be delivered to the engine
More air bleed will occur, reducing fuel flow to the engine
More fuel will be delivered to the engine
Less air bleed will occur, increasing fuel flow to the engine
In the RSA fuel injection system, how will the pilot select idle cut off mixture?
The pilot will not, it is done automgically by the automatic mixture control
By pushing the mixture control full forward
By pulling the mixture control full aft
By pushing the throttle control full forward
In the RSA system as the throttle proceeds to full power what will happen?
An accelerator pump will open to increase the mixture ratio and provide for "fuel cooling" of the engine
An enrichment jet will close to increase the mixture ratio and provide for "fuel cooling" of the engine
An enrichment jet will open to increase the mixture ratio and provide for "fuel cooling" of the engine
An enrichment jet will close to increase the mixture ratio and provide for "enhanced air cooling" of the engine
In the RSA fuel injection system, how will the pilot select full rich mixture?
The pilot will not, it is done automgically by the automatic mixture control
By pushing the mixture control full forward
By pulling the mixture control full aft
By pushing the throttle control full forward
In the RSA fuel injection system what will control the mixture valve?
The automatic mixture control in the carburetor
The mixture control in the cockpit
The prop lever
The throttle lever
What colour is the mixture control knob?
Red
Black
Blue
White
In the RSA fuel injection system, how will the pilot select a leaner mixture?
The pilot will not, it is done automgically by the automatic mixture control
By pushing the mixture control full forward
By pulling the mixture control aft as much as needed
By pulling the mixture control full aft
In the RSA fuel injection system what will control the idle valve?
The mixture control in the cockpit
The automatic mixture control in the carburetor
The throttle lever
The prop lever
In the RSA system, what does the metering unit consist of?
The float assembly, float bowl, mixture valve, main metering jet and discharge nozzle
The float assembly, float bowl, main metering jet and discharge nozzle
The fuel strainer, mixture and idle valves, main and enrichment metering jet
The float assembly, float bowl, mixture and idle valves, main and enrichment metering jet
What kind of valve is used for the idle valve in the RSA fuel injection system?
A step cut rotary valve
A sleeve valve
A plate type valve
A needle valve & seat
In the RSA system with the throttle at idle where is the idle valve set?
It is set tor the minimum fuel flow position to obtain the desired idle speed mixture ratio
It is set to the maximum fuel flow position to obtain the desired full speed mixture ratio
It is set to the maximum fuel flow position to obtain the desired idle speed mixture ratio
It is set to the minimum fuel flow position to obtain the desired full speed mixture ratio
What kind of valve is used for mixture control in the RSA fuel injection system?
A plate type valve
A needle valve & seat
A step cut rotary valve
A sleeve valve
In the RSA system what controls the amount of fuel going to the engine?
The difference between impact and venturi pressures acting against the sum of metered and unmetered fuel pressures
The difference between impact and venturi pressures acting against the difference between metered and unmetered fuel pressures
The sum of impact and venturi pressures acting against the sum of metered and unmetered fuel pressures
The sum of impact and venturi pressures acting against the difference between metered and unmetered fuel pressures
In the RSA system what is the fuel regulator made up of?
4 chambers with 4 diaphragms and a ball valve assembly
2 chambers with 2 diaphragms and a ball valve assembly
4 chambers with 2 diaphragms and a ball valve assembly
2 chambers with 4 diaphragms and a ball valve assembly
In the RSA system, how is automatic mixture control performed?
Using a helium filled bellows to vary the difference in metered fuel pressure
Using a helium filled bellows to increase the impact and venturi air pressures
Using a helium filled bellows to vary the difference in un-metered fuel pressure
Using a helium filled bellows to vary the difference in impact and venturi air pressures
In the RSA system, what controls the amount of fuel delivered to the engine?
The pressure amplification across the main metering jet & the mixture control orifice which are in series
The pressure rise across the main metering jet & the mixture control orifice which are in series
The pressure drop across the main metering jet & the mixture control orifice which are in series
The pressure drop across the main metering jet & the mixture control orifice which are in parallel
In the RSA system, what will make sure that enough fuel will flow to the engine at idle?
The pressure valve in the flow divider
The constant head pressure idle spring
Venturi and impact air pressures
Engine driven pump pressure
What are the power sources controlling the RSA fuel servo regulator?
One air source and two fuel pressure sources acting on the ball valve
Two air sources and one fuel pressure sources acting on the ball valve
Two air sources and two fuel pressure sources acting on the ball valve
Two fuel pressure sources acting on the ball valve
In the RSA system what is the servo regulator made of?
A air diaphragm and a fuel diaphragm on a shaft with a ball type servo valve in the unmetered fuel passage to the flow divider
A air diaphragm and a fuel diaphragm on a shaft with a ball type servo valve in the metered fuel passage to the flow divider
Two fuel diaphragms on a shaft with a ball type servo valve in the metered fuel passage to the flow divider
A air diaphragm and a fuel diaphragm on a shaft with a poppet type valve in the unmetered fuel passage to the flow divider
In the RSA system, why does the diaphragm valve in the flow divider shut off the fuel? #1
To prevent engine run-on
To lean the mixture
To prevent oil pressure loss
To richen the mixture
Which of the following is a purpose of the flow divider in the RSA system? #1
Empties the fuel system when the engine is shut down
Aids in consistent idling
Controls the flow of fuel to the metering unit
Distributes air evenly to all cylinders
Where is the flow divider mounted in the RSA system?
On the top center of the crankcase
On the bottom center of the crankcase
On the back of the engine
On the throttle body
What is the purpose of the diaphragm inside the flow divider in the RSA system?
To shut off the fuel when the mixture is moved to idle cut off, to trap fuel in the lines to the nozzles
To shut off the fuel when the mixture is moved to idle cut off, to trap fuel in the lines to the regulator
To shut off the fuel when the mixture is moved to idle cut off, to empty the fuel in the lines to the regulator
To hold the fuel on when the mixture is moved to idle cut off, to empty the fuel in the lines to the regulator
In the RSA system, why does the diaphragm valve in the flow divider shut off the fuel? #2
To lean the mixture
To prevent fuel line drainage that could lead to vapour lock
To prevent oil line drainage that could lead to increased bearing wear
To richen the mixture
Which of the following is a purpose of the flow divider in the RSA system? #2
Empties the fuel system when the engine is shut down
Distributes air evenly to all cylinders
Controls the flow of fuel to the metering unit
Distributes fuel evenly to all cylinders
Which of the following is a purpose of the flow divider in the RSA system? #3
Distributes air evenly to all cylinders
Shuts off fuel when the engine is shut down
Empties the fuel system when the engine is shut down
Controls the flow of fuel to the metering unit
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