Procedure for igniting a turbine engine combustion chamber
AssigneeSnecma
InventorsChristophe Pieussergues, Denis Jean Maurice Sandelis
Life of this patent
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Abstract
A procedure for igniting a combustion chamber of a turbine engine, the chamber being fed with fuel by injectors and including an igniter mechanism igniting the fuel injected into the chamber. The procedure includes an initial stage during which fuel is injected into the chamber at a constant rate while simultaneously exciting the igniter mechanism, and in event of non-ignition of the chamber at an end of the initial stage, a second stage during which a rate at which fuel is injected is increased rapidly by 20% to 30%.
Claims14
A method for igniting a combustion chamber of a turbine engine, the method comprising:
- a first initial stage during which fuel is injected into the combustion chamber at a constant rate while simultaneously exciting an igniter which ignites the fuel injected into the combustion chamber;
- a second stage during which a rate at which fuel is injected is increased rapidly by 20% to 30%;
- and
- the second stage being followed by a third stage of progressively increasing the fuel flow rate by an amount that is smaller and slower than in the second stage.
A method for igniting, at a ground level, a combustion chamber of a turbine engine including a compressor, the method comprising:
- a first stage during which running an electric starter connected to a shaft of the compressor causes the shaft to rotate, thereby causing air under pressure to penetrate into the chamber, while injecting fuel into the combustion chamber at a constant non-zero rate and simultaneously exciting an igniter trying to ignite the fuel injected into the combustion chamber;
- then
- further to an event of non-ignition of the fuel in the combustion chamber at an end of said first stage, a second stage during which a rate at which fuel is injected is increased rapidly by 20% to 30% with respect to said constant non-zero rate, while exciting the igniter which ignites the fuel injected into the combustion chamber.
Dependencies are inferred from the claim text.