The EEC comprises how many control channels?

The EEC comprises how many control channels?

• A. Four
• B. One
• C. Two
• D. Three

Answer: (C)

Two independent control channels are used in an Electronic Engine Control to provide redundancy and fault tolerance. Each channel receives the same sensor data and independently computes fuel metering and other commands. The channels continually compare their outputs; when they agree, the EEC forwards that command to the actuators. If a fault or mismatch is detected, the system can remain under control by the healthy channel or enter a degraded safe mode, with a fault indication. This dual-channel setup ensures continued engine control even if one channel fails. A single channel would lack redundancy, while more than two adds unnecessary complexity for this purpose, so the standard arrangement is two.

Two independent control channels are used in an Electronic Engine Control to provide redundancy and fault tolerance. Each channel receives the same sensor data and independently computes fuel metering and other commands. The channels continually compare their outputs; when they agree, the EEC forwards that command to the actuators. If a fault or mismatch is detected, the system can remain under control by the healthy channel or enter a degraded safe mode, with a fault indication. This dual-channel setup ensures continued engine control even if one channel fails. A single channel would lack redundancy, while more than two adds unnecessary complexity for this purpose, so the standard arrangement is two.