The system that meters fuel to the engine is known as ______.

The system that meters fuel to the engine is known as ______.

• A. FADEC
• B. ECU
• C. EEC
• D. PCM

Answer: (A)

Fuel metering in modern aircraft engines is handled by the FADEC system—the Full Authority Digital Engine Control. This digital controller uses signals from the throttle, sensors measuring engine speed, temperature, pressures, and other conditions to calculate the exact amount of fuel the engine needs and then schedules that fuel flow through the fuel metering system. It is designed to manage fuel delivery precisely to meet the commanded thrust while protecting the engine from abnormal conditions, making it the definitive system for metering fuel. Other terms like Engine Control Unit or Electronic Engine Control exist, but in contemporary aviation the term FADEC specifically denotes the system that actively meters fuel and governs engine operation. The PCM is a car-oriented module, not used for aircraft engines, and the EEC is an older term that has largely been superseded by FADEC in modern aircraft.

Fuel metering in modern aircraft engines is handled by the FADEC system—the Full Authority Digital Engine Control. This digital controller uses signals from the throttle, sensors measuring engine speed, temperature, pressures, and other conditions to calculate the exact amount of fuel the engine needs and then schedules that fuel flow through the fuel metering system. It is designed to manage fuel delivery precisely to meet the commanded thrust while protecting the engine from abnormal conditions, making it the definitive system for metering fuel.

Other terms like Engine Control Unit or Electronic Engine Control exist, but in contemporary aviation the term FADEC specifically denotes the system that actively meters fuel and governs engine operation. The PCM is a car-oriented module, not used for aircraft engines, and the EEC is an older term that has largely been superseded by FADEC in modern aircraft.