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Questions and Answers
What is the purpose of a fuel heater/strainer assembly?
What is the purpose of a fuel heater/strainer assembly?
- To cool fuel while heating lubricating oil
- To heat fuel while cooling lubricating oil (correct)
- To regulate the temperature of compressor air
- To filter fuel before entering the engine
What component positions the modulating valve to control oil flow through the heat exchanger?
What component positions the modulating valve to control oil flow through the heat exchanger?
- Fuel strainer
- Strainer mesh
- Bypass valve
- Fuel temperature sensing thermostat (correct)
How does a typical fuel heater/strainer assembly transfer heat into the fuel?
How does a typical fuel heater/strainer assembly transfer heat into the fuel?
- By circulating oil or air around the tubes carrying fuel (correct)
- By controlling the temperature of compressor air
- By using a bypass valve
- By filtering the fuel before it enters the engine
What is contained within a matrix in a fuel heater/strainer assembly?
What is contained within a matrix in a fuel heater/strainer assembly?
In Figure 4, how does oil pass through the heat exchanger of a fuel heater/strainer assembly?
In Figure 4, how does oil pass through the heat exchanger of a fuel heater/strainer assembly?
What happens if the strainer in a fuel heater/strainer assembly blocks?
What happens if the strainer in a fuel heater/strainer assembly blocks?
Which component of a fuel heater/strainer assembly is responsible for filtering the fuel as it enters the engine?
Which component of a fuel heater/strainer assembly is responsible for filtering the fuel as it enters the engine?
From a function perspective, what role does the modulating valve play in a fuel heater/strainer assembly?
From a function perspective, what role does the modulating valve play in a fuel heater/strainer assembly?
What is one of the more complex aspects of a gas turbine engine?
What is one of the more complex aspects of a gas turbine engine?
Which component is responsible for pressurizing the fuel system in a gas turbine engine?
Which component is responsible for pressurizing the fuel system in a gas turbine engine?
What is used to prevent air bubbles from entering the fuel system of a gas turbine engine?
What is used to prevent air bubbles from entering the fuel system of a gas turbine engine?
Which component in a gas turbine engine controls the amount of fuel being supplied to the engine?
Which component in a gas turbine engine controls the amount of fuel being supplied to the engine?
What is responsible for measuring the speed of the engine in a gas turbine engine?
What is responsible for measuring the speed of the engine in a gas turbine engine?
Which component ensures the correct pressure level is maintained within the fuel system of a gas turbine engine?
Which component ensures the correct pressure level is maintained within the fuel system of a gas turbine engine?
Which system allows for precise control of fuel flow in a gas turbine engine?
Which system allows for precise control of fuel flow in a gas turbine engine?
What component measures the amount of fuel passing through and provides data to the engine control systems?
What component measures the amount of fuel passing through and provides data to the engine control systems?
What is the purpose of the oil bypass valve in the fuel heater/strainer system?
What is the purpose of the oil bypass valve in the fuel heater/strainer system?
Where is a low-pressure fuel filter typically installed in an engine fuel system?
Where is a low-pressure fuel filter typically installed in an engine fuel system?
What role does the fuel-sensing thermostat play in the fuel heater/strainer system?
What role does the fuel-sensing thermostat play in the fuel heater/strainer system?
When does the oil bypass valve open in the fuel heater/strainer system?
When does the oil bypass valve open in the fuel heater/strainer system?
Which component protects a typical engine fuel system from contaminants?
Which component protects a typical engine fuel system from contaminants?
What happens when the modulating valve in the fuel heater/strainer system closes?
What happens when the modulating valve in the fuel heater/strainer system closes?
Where is a high-pressure fuel filter typically located in an engine fuel system?
Where is a high-pressure fuel filter typically located in an engine fuel system?
What function does the modulating valve serve in the fuel heater/strainer system?
What function does the modulating valve serve in the fuel heater/strainer system?
What is the purpose of the spring located in the downstream side of the control piston?
What is the purpose of the spring located in the downstream side of the control piston?
During engine start, why does the pump servo piston spring move the pump cam-plate to full deflection?
During engine start, why does the pump servo piston spring move the pump cam-plate to full deflection?
How does the pressure bellows affect the control piston?
How does the pressure bellows affect the control piston?
What happens to the throttle during engine start?
What happens to the throttle during engine start?
Why does fuel flow from the pump to the FCU during engine start?
Why does fuel flow from the pump to the FCU during engine start?
How does the spring behave when the control piston senses no differential pressure?
How does the spring behave when the control piston senses no differential pressure?
What is the role of the pump cam-plate during engine start?
What is the role of the pump cam-plate during engine start?
Why is it important for fuel to pass through the back pressure valve during engine start?
Why is it important for fuel to pass through the back pressure valve during engine start?
What is the function of the FCU control piston?
What is the function of the FCU control piston?
How does the throttle valve contribute to adjusting the fuel pump stroke?
How does the throttle valve contribute to adjusting the fuel pump stroke?
What is the role of the inlet pressure bellows in the fuel system?
What is the role of the inlet pressure bellows in the fuel system?
How does the servo piston in the fuel pump operate?
How does the servo piston in the fuel pump operate?
Why is the FCU control system equipped with spill valves?
Why is the FCU control system equipped with spill valves?
What does the high-pressure cock control in the fuel system?
What does the high-pressure cock control in the fuel system?
Which component is responsible for varying the amount of fuel delivered to the engine?
Which component is responsible for varying the amount of fuel delivered to the engine?
What is the purpose of connecting the bellows assembly to a spill valve?
What is the purpose of connecting the bellows assembly to a spill valve?
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