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The propeller pitch control system is integrated into the engine. The pitch is controlled automatically by the ECU.
Depending on the power setting the propeller pitch is adjusted so that the required RPM will be obtained as shown in the following diagram.
2300 2175 2000
1750
RPM
0
0 20 75 100
% LOAD
Doc. No. 6.01.05-E Revision 3 26-May-2003 Page 7 - 26
CAUTION
Operation on the ground at high RPM should be avoided as far as possible, as the blades could suffer stone damage. For this reason a suitable site for engine runs should be selected, where there are no loose stones or similar items.
WARNING
Never move the propeller by hand.
Doc. No. 6.01.05-E Revision 3 26-May-2003 Page 7 - 27
7.9.4 ENGINE INSTRUMENTS
Compact Engine Display (CED 125)
125.
Indications on the Engine Instrument CED 125 Auxiliary Engine Display (AED 125)
Designation Indication Unit
RPM Propeller RPM 1/min
OP Oil pressure bar
OT Engine oil temperature °C
CT Coolant temperature °C
GT Gearbox temperature °C
LOAD Available power %
Doc. No. 6.01.05-E Revision 3 26-May-2003 Page 7 - 28
Fuel quantity: 2 digits = appr. 1 US gal Indications on the Auxiliary Engine Instrument AED 125
Designation Indication Unit
FUEL QUANTITY MAIN Fuel quantity MAIN tank gal
FUEL QUANTITY AUX Fuel quantity AUX tank gal
WATER LEVEL Coolant level --
FUEL TEMP. LEFT Fuel temperature left tank °C
FUEL TEMP. RIGHT Fuel temperature right tank °C
GENERATOR Ampères A
VOLT Volts V
FUEL FLOW Fuel flow US gal/h
Doc. No. 6.01.05-E Revision 3 26-May-2003 Page 7 - 29
7.9.5 FUEL SYSTEM
Doc. No. 6.01.05-E Revision 3 26-May-2003 Page 7 - 30
Fuel is injected with high pressure directly into the cylinders. The injection nozzles (one per cylinder) are supplied with fuel by the common rail. Pressure inside the rail is generated by a high pressure pump which receives fuel from a low pressure pump. Both pumps are powered mechanically by the engine.
Normally fuel is taken only from the MAIN tank (left wing). Fuel that is not injected is lead through the AUX tank (right wing) back into the MAIN tank (left wing). This way hot fuel from the rail is cooled and cold fuel in both tanks is heated. With the help of an electrical transfer pump fuel can be transferred from the AUX tank (right wing) to the MAIN tank (left wing) manually.
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