Dual Cooling of Engine
The dual cooling function was developed and aims to reduce the overall time to start both engines on A320neo (PW1100G-JM) as reflected in below graph.
A318/A319/A320/A321 aircraft powered with PW1100G-JM engine type.
To face High Pressure Compressor (HPC) bow rotor phenomenon, EEC Motor to Start logic (MtS) was developed and set-up to protect the engine.
• MtS was put in place to harmonize HPC rotor thermal patterns prior starting to idle. It leads the EEC to cycle Start Air Valve (SAV) to limit N2 up to 12% with a dedicated displayed on DMC “COOLING” during this
sequence.
• This protection logic consequently increases engine start times, with operational impacts for operators.
Credit : Neeru Upadhaya
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A318/A319/A320/A321 aircraft powered with PW1100G-JM engine type.
To face High Pressure Compressor (HPC) bow rotor phenomenon, EEC Motor to Start logic (MtS) was developed and set-up to protect the engine.
• MtS was put in place to harmonize HPC rotor thermal patterns prior starting to idle. It leads the EEC to cycle Start Air Valve (SAV) to limit N2 up to 12% with a dedicated displayed on DMC “COOLING” during this
sequence.
• This protection logic consequently increases engine start times, with operational impacts for operators.
Credit : Neeru Upadhaya
Sharing is Caring
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