F - Mech Eng,Light,Heat,Weapons – 04 – C
Patent
F - Mech Eng,Light,Heat,Weapons
04
C
F04C 2/14 (2006.01) F04C 15/00 (2006.01) F16D 1/06 (2006.01)
Patent
CA 2747074
The invention relates to a fuel pump, especially the prefeed pump for feeding aircraft fuel to the high pressure pump, wherein the form-fit connection between the drive shaft (4) and the driven impeller (2) is produced by a regular, convex, triangular polygonal contour having rounded-off lateral faces and corner faces, the drive shaft and the impeller being provided with said polygonal contour. In this manner, the wear resulting from the poor lubricating power of the kerosene-based aircraft fuel can be reduced and the service life of the fuel pump can be increased.
Sur une pompe à carburant, en particulier la pompe d'alimentation envoyant du carburant pour avion à la pompe à haute pression, la liaison avec complémentarité de forme entre l'arbre d'entraînement (4) et la roue de pompe entraînée (2) est formée par un contour polygonal régulier, convexe et triangulaire réalisé sur ceux-ci, ayant des surfaces latérales et d'angle arrondies. De ce fait, les phénomènes d'usure qui s'expliquent par le faible effet lubrifiant du carburant pour avion à base de kérosène sont réduits et la durée de vie de la pompe à carburant est augmentée.
Cassan Maclean
Thielert Aircraft Engines Gmbh Represented By The Insolvency Adm
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