Engines

Question 1

What make are the engines?

Answer 1

Thielert Aircraft Engines - TAE 125

Question 2

What type of engines are they? x6 characteristics

Answer 2

Four-cylinder
Four-stroke
Diesle cycle
Liquid cooled
Turbo-charged 
Wet sump lubrication

Question 3

Does the FADEC operate the engine?

Answer 3

Yes, the FADEC operates two ECUs on each engine which control the engine.

Question 4

Minimum and Maximum engine temperature?

Answer 4

-30degC and +75degC

Question 5

Does the left hand engine control cabin heating?

Answer 5

No, cabin heating is through the Right Hand Engine. The air ventilation inlet is on the underside of the RH wing, inboard of the engine nacelle. Air distributed via 6 nozzles. The Left hand controls defrost.

Question 6

How does the ECU receive power?

Answer 6

Each engine has its own ECU. Receives electrical power from generator of at least 1 engine running.
Or if both at standstill, power from the battery.

Question 7

What does liquid cooled mean?

Answer 7

Consists of radiator and bypass.

Liquid coolant pumped around passages within the engine by a belt driven integral pump.

Question 8

How does the engine cooling system work?

Answer 8

The bypass system operates when coolant temperatures are low -> heats engine up quickly.
When hot (88degC) the radiator activated by thermostat valve -> directs fluid through heat exchanger.
Coolant to air heat exchanger provides cabin heat.
Expansion tank protects from overpressure due to pressure relief valve. And overflow pipe drains excess coolant.

Question 9

Describe the fire detection system.

Answer 9

Overheat detector found in the hot area of each engine. When temp reaches 250degC the overheat detector closes electric circuit -> warning message.