Powerplant - Fuel Metering Flashcards
Where are the spray nozzles located in a turbine engine?
Externally or internally on the combustion chamber in a way that the fuel can be sprayed in the combustion area
What are the two most commonly used carburetors in small reciprocating engines?
Float type and pressure type
What type of fuel control unit is used in a turbine engine?
Hydromechanical and electronic fuel control units
What is the purpose of a mixture control in a float type carburetor?
To control fuel air mixture as density changes in altitude
What will be the result of using excessively rich idle mixtures?
Spark plug fouling
Where does a pressure injection carburetor obtain fuel pressure?
From the boost pump for starting and from the engine driven pump for normal operations
In what position do you place the mixture control of a pressure injection carburetor to stop the engine?
Idle cutoff position
What are three types of carburetor icing?
Fuel evaporator, impact and throttle evaporator icing
What engine variables are sensed by a hydro mechanical fuel control?
The power lever position, RPM, compressor inlet temperature, burner pressure, or compressor discharge pressure, and EGT or TIT
