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2024-2025 College Catalog

AVM 234 - Engine Fuel Metering and Operation

2 Credits, 4 Contact Hours
1 lecture periods 3 lab periods
Fundamentals of aircraft engine fuel systems. Includes fuel metering theory and requirements, aviation fuels, and float carburetor maintenance and installation. Also includes fuel injection systems, Bendix fuel injection and maintenance, and Teledyne Continental Motors (TCM) fuel injection and maintenance. Also includes fuel metering system components and maintenance, turbine engine fuel systems components and maintenance, jet fuel controls; and reciprocating, turbine, and turbo propeller engine operations.

Button linking to AZ Transfer course equivalency guide    button image Prior Learning and link to PLA webpage

Course Learning Outcomes
  1. Recall proficient knowledge of engine fuel metering systems
  2. Recall proficient knowledge of aircraft carburetors
  3. Demonstrate common processes/procedures associated with engine fuel system operation
Outline:
  1. Fuel System Requirements
    1. Vapor Lock
  2. Basic Fuel System
  3. Fuel Metering Devices for Reciprocating Engines
    1. Fuel/Air Mixtures
  4. Carburetion Principles
    1. Venturi Principles
    2. Application of Venturi Principle to Carburetor
    3. Metering and Discharge of Fuel
  5. Carburetor Systems
  6. Carburetor Types
  7. Carburetor Icing
  8. Float-Type Carburetors
    1. Float Chamber Mechanism System
    2. Main Metering System
    3. Idling System
    4. Mixture Control System
    5. Accelerating System
    6. Economizer System
  9. Pressure Injection Carburetors
    1. Typical Injection Carburetor
    2. Throttle Body
    3. Regulator Unit
    4. Fuel Control Unit
  10. Automatic Mixture Control (AMC)
  11. Stromberg PS Carburetor
    1. Accelerating Pump
    2. Manual Mixture Control
  12. Fuel-Injection Systems
    1. Bendix/Precision Fuel-Injection System
    2. Fuel Injector
    3. Airflow Section
    4. Regulator Section
    5. Fuel Metering Section
    6. Flow Divider
    7. Fuel Discharge Nozzles
    8. Continental/TCM Fuel-Injection System
    9. Fuel-Injection Pump
    10. Fuel/Air Control Unit
    11. Fuel Control Assembly
    12. Fuel Manifold Valve
    13. Fuel Discharge Nozzle
  13. Carburetor Maintenance
    1. Carburetor Removal
    2. Installation of Carburetor
    3. Rigging Carburetor Controls
    4. Adjusting Idle Mixtures
    5. Idle Speed Adjustment
  14. Fuel System Inspection and Maintenance
    1. Complete System
    2. Fuel Tanks
    3. Lines and Fittings
    4. Selector Valves
    5. Pumps
    6. Main Line Strainers
    7. Fuel Quantity Gauges
    8. Fuel Pressure Gauge
    9. Pressure Warning Signal
    10. Water Injection Systems for Reciprocating Engines
  15. Turbine Engine Fuel System—General Requirements
    1. Turbine Fuel Controls
    2. Hydromechanical Fuel Control
    3. Hydromechanical/Electronic Fuel Control
    4. FADEC Fuel Control Systems
    5. FADEC for an Auxiliary Power Unit
    6. FADEC Fuel Control Propulsion Engine
    7. Fuel System Operation
  16. Water Injection System
  17. Fuel Control Maintenance
  18. Engine Fuel System Components
    1. Main Fuel Pumps (Engine Driven)
    2. Fuel Heater
    3. Fuel Filters
    4. Fuel Spray Nozzles and Fuel Manifolds
    5. Simplex Fuel Nozzle
    6. Duplex Fuel Nozzle
    7. Airblast Nozzles
    8. Flow Divider
    9. Fuel Pressurizing and Dump Valves
    10. Combustion Drain Valves
  19. Fuel Quantity Indicating Units

Effective Term:
Fall 2024