The starter is manually controlled by the pilot. The EECU will detect a running engine at 600rpm
(Propeller) and further activation is not necessary.
The Generator is a 28V/70A power supply which consists of an alternator mounted to the engine and
an external regulator. This power supply is used to supply the EECS and the airframe.
The Glow Plug Control Unit is only used to enhance the cold starting behavior of the engine on
ground. It controls the power which is dissipated by glow plugs. These quick start glow plugs help to
ignite the compressed fuel/air mixture because of their hot surface temperature.
The EECU is a 28V supplied device which consists of two similar parts, called ECU A and ECU B. Each
ECU is able to control the engine itself. At each self test both ECU channels will be tested.
Depending on the operating hours count the active ECU will be selected. The other ECU channel is in
hot standby that means active, evaluating sensor values but not operating actuators.
In case of a detected failure on one ECU an internal voter can switch over to the alternate channel.
If different kinds of failures are active at the same time, the switch over decision is based on failure
priorities.
This switch over decision can be overruled by the pilot by manually forcing one channel.
The interface to the engine indications in the A/C is realized via a serial Bus (CAN-Bus).
The pilot interface is realized over Power Lever Sensors. Each ECU has it´s own sensor. Each sensor
has two outputs which are used to perform plausibility checks of the sensor.
To Next Page
Loading...
Need help?
General
