Piston 2 4B
In the RSA system what kind of nozzles are used in turbocharged applications?
Shielded
Sealed
Certified
Shrouded
The RSA system, what is done to the air before use in the fuel nozzle?
It mixed with the fuel
It is warmed
It is cooled
It is filtered
Why are shielded nozzles required in turbocharged RSA system? #1
Because manifold pressure is higher than fuel pressure, causing the mixture to go lean
Because manifold pressure is higher than fuel pressure, causing the mixture to go rich
Because manifold pressure is lower than fuel pressure, causing the mixture to go lean
Because manifold pressure is higher than fuel pressure, causing fuel to leak out the bleed holes if they are unshielded
Why are shielded nozzles required in turbocharged RSA system? #2
Because fuel pressure is lower than manifold pressure, causing fuel to leak out the bleed holes if they are unshielded
Because manifold pressure is higher than fuel pressure, causing the mixture to go lean
Because manifold pressure is higher than fuel pressure, causing the mixture to go rich
Because manifold pressure is lower than fuel pressure, causing the mixture to go lean
In the RSA system, what kind of fuel nozzles are used?
Fuel Bleed type
High pressure type
On demand type
Air bleed type
Why is upper deck pressure provided to the shielded fuel nozzles in a turbocharged RSA system?
To force the emulsification of the fuel in the intake valve chamber
To force the emulsification of the fuel in the nozzle
To force the emulsification of the fuel in the exhaust valve chamber
To force the emulsification of the fuel in the combustion chamber
In normally aspirated RSA systems why is air drawn into the fuel injection nozzle?
To begin atomization and conversion of fuel to a mist in the intake valve chamber
To begin freezing and conversion of fuel to a mist in the emulsion chamber
To begin atomization and conversion of fuel to a mist in the emulsion chamber
To begin atomization and conversion of fuel to crystals in the emulsion chamber
What kind of air is provided to shielded fuel nozzles in a turbocharged RSA system? #1
Manifold Pressure
AMBIENT PRESSURE
Upper deck pressure
Ram air pressure
What kind of air is provided to shielded fuel nozzles in a turbocharged RSA system? #2
Ram air pressure
Ambient pressure
Compressor discharge pressure
Manifold pressure
In the RSA system what kind of nozzles are used in non-turbocharged applications?
Shielded
Sealed
Certified
Shrouded
In the RSA system what state will the fuel be in after leaving the fuel nozzle? #1
Liquid
Vapour
Solid
Crystalline
In the RSA system what state will the fuel be in after leaving the fuel nozzle? #2
Liquid
Large droplets
Small droplets
Atomized
In a non-turbocharged RSA system what will make the fuel pump move?
The #1 cylinder exhaust valve cam
A gear drive
A shaft drive
A dedicated cam
In a diaphragm fuel pump what will control the flow of fuel in and out of the pump?
Two check valves
Cam driven poppet valves
The direction of vane rotation
A sleeve valve
In a diaphragm driven fuel pump what will draw the fuel into the pump?
The shaft drive spinning the diaphragm
The gear drive spinning the diaphragm
The lever arm moving the diaphragm
The cam moving the diaphragm
In a turbocharged RSA system what will make the fuel pump move?
A gear drive
A dedicated cam
A shaft drive
The #1 cylinder exhaust valve cam
What kind of pumps are used in RSA fuel injection systems?
Continuous displacement variable pu
Variable displacement pumps
Constant displacement pumps
Occasional displacement pumps
What kind of fuel pump is used in a turbocharged RSA system?
An engine driven vane pump
An engine driven gerotor pump
An engine driven diaphragm pump
An electrically driven diaphragm pump
In a diaphragm driven fuel pump what will push the fuel out of the pump?
The gear drive spinning the diaphragm
The spring moving the diaphragm
The cam moving the diaphragm
The shaft drive spinning the diaphragm
In a vane fuel pump what will control the flow of fuel in and out of the pump?
A sleeve valve
Cam driven poppet valves
Two check valve
The direction of vane rotation
What does the pressure relief valve do in a vane type fuel pump?
It eliminates the need for a servo regulator
It eliminates the need for a flow divider
It sets the minimum fuel pressure
It sets the maximum fuel pressure
What kind of fuel pump is used in a non-turbocharged RSA system?
An engine driven gerotor pump
An engine driven vane pump
An electrically driven diaphragm pump
An engine driven diaphragm pump
When cleaning RSA fuel injection nozzles what must you take care to do?
Reinstall them with all the even numbers swapped for odd I.e. 1 for 2, 3 for 4, 5 for 6
Reinstall them with all the odd numbers and even numbers swapped I.e. 1 for 3, 2 for 4
Make sure that the nozzles are rotated like you would for spark plugs
Make sure that they go back into the same cylinder they were removed from
How are fuel nozzles installed in an engine with an RSA fuel injection system?
Finger tight, with the nozzles lubricated with engine oil
Tight, with the nozzles not lubricated
To specified torque, with the nozzles not lubricated
To specified torque, with the nozzles lubricated with engine oil
How is the idle speed of an RSA fuel injection system adjusted?
By adjusting the idle mixture ratio
By changing the height of the fuel in the fuel bowl
By changing the stopping position of the throttle lever
By increasing compressor discharge pressure
What maintenance will be done to the RSA fuel injection system? #2
Inspection of the fuel lines for bend radius, nicks, kinks every 100hrs
Inspection of the fuel lines for bend radius, nicks, kinks and clamping every 1000hrs
Inspection of the fuel lines for bend radius, nicks, kinks and clamping every 100hrs
Inspection of the fuel lines for bend radius, nicks, kinks and clamping every 50hrs
With the RSA system, how is the idle mixture checked?
With the engine cold, pull the mixture to ICO and check the RPM
With the engine hot, push the mixture to rich and check the RPM rise
With the engine hot, pull the mixture 1/2 way back and check the RPM rise
With the engine hot, pull the mixture to ICO and check the RPM rise
How are RSA fuel injection components cleaned?
They do not need cleaning
They are mechanically cleaned using brushes and lock wire
They are laser cleane
They are ultrasonically cleaned
What maintenance will be done to the RSA fuel injection system? #1
Cleaning of the fuel injector and flow divider every 100hrs
Cleaning of the nozzles and inlet screen every 100hrs
Cleaning of the fuel injector and flow divider every 50hrs
Cleaning of the nozzles and inlet screen every 50hrs
If the max fuel pump pressure on a vane type fuel pump in an RSA system is too high what should you do?
Replace or overhaul it
Change the shim washers as required
Adjust it higher by turning the adjustment clockwise
Adjust it higher by turning the adjustment clockwise
On an engine with an RSA system, which way will the idle adjustment be turned if the engine idle speed is too low?
Counterclockwise (out)
Counterclockwise (in)
Clockwise (in)
Clockwise (out
On an engine with an RSA system, which way will the idle adjustment be turned if the engine idle speed is too high?
Clockwise (in)
Clockwise (out
Counterclockwise (in)
Counterclockwise (out)
How is the idle speed of an RSA fuel injection system adjusted?
By changing the stopping position of the idle lever
By changing the height of the fuel in the fuel bowl
By increasing compressor discharge pressure
By adjusting the idle mixture ratio
When will you check the idle speed on a RSA fuel injected engine?
At idle, engine cold
At 1000rpm, engine cold
At 500rom, engine hot
At idle, engine hot
If the max fuel pump pressure on a vane type fuel pump in an RSA system is too low what should you do?
Adjust it higher by turning the adjustment clockwise
Adjust it higher by turning the adjustment clockwise
Replace or overhaul it
Change the shim washers as required
What is the correct mixture rise for an engine using the RSA fuel injection system?
75-100 rpm
0-25 rpm
25-50 rpm
50-75 rpm
With the RSA system, how will you change the idle mixture ?
By adjusting the idle mixture needle valve
By adjusting the mixture lever
By adjusting the idle stop
By adjusting the length of link to the idle lever
What is this part? #3
Flow divider
Venturi housing
Servo regulator
Fuel pump - non-turbocharged
Fuel pump - turbocharge
Fuel nozzle - turbocharged
Fuel metering unit
Fuel injector
Fuel nozzle - non-turbocharged
What is pointed to by A in this picture?
Fuel metering unit
Throttle valve
Venturi assembly
Fuel servo
What is this part? #5
Fuel injector
Flow divider
Fuel pump - non-turbocharged
Fuel pump - turbocharged
Venturi housing
Fuel metering unit
Fuel nozzle - non-turbocharged
Servo regulator
Fuel nozzle - turbocharged
What is pointed to by C in this picture?
Throttle valve
Venturi assembly
Fuel servo
Fuel metering unit
What is this part? #4
Fuel metering unit
Fuel pump - non-turbocharged
Fuel pump - turbocharged
Venturi housing
Flow divider
Fuel injector
Servo regulator
Fuel nozzle - non-turbocharged
Fuel nozzle - turbocharged
What is pointed to by B in this picture?
Venturi assembly
Fuel servo
Throttle valve
Fuel metering uni
What is this part? #2
Fuel pump - non-turbocharged
Servo regulator
Venturi housing
Fuel injector
Fuel nozzle - non-turbocharged
Flow divider
Fuel nozzle - turbocharged
Fuel pump - turbocharged
Fuel metering unit
What is this part? #6
Fuel nozzle - non-turbocharged
Fuel pump - turbocharged
Servo regulator
Fuel nozzle - turbocharged
Venturi housing
Fuel pump - non-turbocharged
Fuel metering unit
Flow divider
Fuel injector
What is this part? #1
Fuel nozzle - non-turbocharged
Flow divider
Fuel nozzle - turbocharged
Fuel injector
Servo regulator
Fuel pump - turbocharged
Fuel pump - non-turbocharged
Fuel metering unit
Venturi housing
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