Patent ID: 7467934
Filing Date: 2008-12-23
Classification: F04C

Abstract:
1. Axial piston engine with a filling pump ( 1 ) integrated in a receiving bore ( 16 ) of the axial piston engine, which filling pump comprises a gerotor set ( 2 ) with an externally toothed inner ring ( 3 ) and an internally toothed outer ring ( 4 ) and also an inner thrust plate ( 5 ) and an outer thrust plate ( 6 ) which enclose the gerotor set ( 2 ) between them and, on their surfaces facing away from the gerotor set ( 2 ), are in each case supported via a plurality of pressure field seals ( 7 , 13 ), which in each case surround at least one pressure field region formed in the thrust plates ( 5 , 6 ), in such a way on the housing walls ( 10 , 11 ) axially enclosing the filling pump ( 1 ) that lateral play in the form of axial mobility of the filling pump ( 1 ) is guaranteed; wherein the inner thrust plate and the outer thrust plate each have grooves ( 17 ) disposed therein for receiving the pressure field seals; wherein the pressure field seals engage an end housing of the axial piston engine ( 15 ) and the housing walls ( 10 , 11 ); wherein a first pressure field seal ( 7 ) is essentially kidney-shaped and surrounds a pressure opening ( 8 ) in the thrust plates ( 5 , 6 ) sealing a first pressure field; and wherein a second pressure field seal ( 13 ) is essentially semi-circular and surrounds a second pressure field; wherein the second pressure field seal ( 13 ) supplements the first pressure field seal ( 7 ) to form a seal running around the periphery of the thrust plate.