System for injecting fuel into a turbomachine
AssigneeHispano Suiza
InventorsPascal Leblanc, Pascal Marly, José Rodrigues, Alain Tiepel
Life of this patent
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Abstract
A system for injecting fuel into a turbomachine comprising N fuel injectors placed in a combustion chamber of the turbomachine and fed from a fuel tank, the injection system further comprising, interposed between the N injectors and the tank, a single pumping means for taking fuel from the tank and delivering N metered flow rates of fuel to the injectors.
Claims19
A system for injecting fuel into a turbomachine having N fuel injectors placed in a combustion chamber of the turbomachine and fed from a fuel tank, the system further comprising, interposed between said N injectors and said tank, a single pumping means for taking fuel from the tank and delivering N metered fuel flows to the injectors,
- wherein said single pumping means comprises an assembly formed by:
- a drive shaft having a longitudinal axis and fitted with N same-diameter drive gears:
- a driven shaft of longitudinal axis parallel to the longitudinal axis of the drive shaft. provided with N same-diameter driven gears meshing with said N drive gears;
- and
- N-l sealing partitions placed transversely between pairs of adjacent gears on the drive and driven shafts so as to define N fuel admission zones and N fuel delivery zones situated on either side of a longitudinal plane containing the longitudinal axes of the drive and driven shafts, said N fuel admission zones communicating with one another via holes pierced through the sealing partitions;
- said assembly being fitted longitudinally in leaktight manner in a cylindrical body having at least one fuel admission orifice connected to the tank and opening out into any one of the admission zones, and N fuel delivery orifices each opening out into a respective one of the N fuel delivery zones to feed each of the N injectors.
A system for injecting fuel into a turbomachine having N fuel injectors fed from a fuel tank, the system comprising, interposed between said N injectors and said fuel tank, a pump configured to pump fuel from the fuel tank and deliver N fuel flows to the fuel injectors,
- wherein said pump comprises an assembly comprising:
- a drive shaft coupled to N drive gears;
- a driven shaft provided with N driven gears meshing with said N drive gears;
- and
- sealing partitions placed between pairs of adjacent gears on the drive and driven shafts so as to define N fuel admission zones and N fuel delivery zones, said N fuel admission zones communicating with one another;
- said assembly being located in a body having at least one fuel admission orifice connected to the fuel tank and opening out into any one of the N fuel admission zones, and N fuel delivery orifices each opening out into a respective one of the N fuel delivery zones to feed each of the N injectors.
Dependencies are inferred from the claim text.