AM.III.H.K6
KnowledgeDigital engine control module (e.g., FADEC).
From the FAA library
- Chapter 7: Aircraft Systems › Full Authority Digital Engine Control (FADEC)
Full Authority Digital Engine Control (FADEC) FADEC is a system consisting of a digital computer and ancillary components that control an aircraft’s engine and propeller. First used in turbine-powered aircraft, and referred to as full authority digital electronic ... control, these sophisticated control systems are increasingly being used in piston powered aircraft. In a spark-ignition reciprocating engine, the FADEC uses speed, temperature, and pressure sensors to monitor the status of each cylinder. A digital computer calculates the ideal…
- Chapter 4: Engine Ignition & Electrical Systems › FADEC System Description › Engine Indicating & Crew Alerting System (EICAS)
control channel within each ECU commands one of the two coil packs to control the ignition spark for the engine cylinders. [Figure 4-28] The high-voltage harness carries energy from the ECU spark towers to the spark plugs ... engine. For both spark plugs in a given cylinder to fire on the compression stroke, both control channels must fire their coil packs. Each coil pack has a spark plug from each of the two cylinders controlled by that…
- Chapter 2: Engine Fuel & Fuel Metering Systems › Basic Fuel System
During starting, the boost pump forces fuel through a bypass in the engine-driven pump to the metering device. Once the engine-driven pump is rotating at sufficient speed, it takes over and delivers fuel to the metering device ... specified pressure. The airframe fuel system begins with the fuel tank and ends at the engine fuel system. The engine fuel system usually includes the engine-driven pumps and the fuel metering systems. In aircraft powered with a reciprocating engine…