Engine Speed and Power Control
The necessary propeller speed set point is calculated depending on the power lever sensor position.
The current engine speed is used to calculate the deviation of the actual propeller speed from the set
point.
The deviation is converted into an output ratio for the set point actuator. An electric motor (actuator)
in the governor system sets the propeller speed set point. This electric motor substitutes the
conventionally used Bowden Cable.
The governor itself controls the propeller speed via the propeller blade pitch angle adjustment. The
actuator control together with the monitoring make sure the actuation is safe and correct.
If the set point is reached, the actuator is deactivated (hysteresis provided).
The requested engine torque is calculated depending on the power lever position and the engine-
speed.
The resulting injection quantity (fuel mass) is calculated depending on the requested torque.
The required boost pressure (air mass) is calculated depending on the calculated injection quantity.
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