Axial piston machine

Abstract

The invention relates to an axial piston machine ( 1 ), in particular an axial piston pump or axial piston motor, comprising a displacement piston ( 24, 26 ) that delimits a displacement chamber ( 22 ) and that is displacably mounted in a cylinder bore ( 20 ). Said invention is characterised in that two displacement pistons ( 24, 26 ) that delimit the displacement chamber ( 22 ) and that are associated with each other can be displaced in a common cylinder bore ( 20 ) in opposite directions in relation to each other.

1 . An axial piston machine ( 1 ), in particular an axial piston pump or an axial piston motor, with a displacement piston ( 24 ,  26 ) which delimits a displacement chamber ( 22 ) and which is mounted so as to be moveable in the cylinder bore ( 20 ), characterized in that two displacement pistons ( 24 ,  26 ), which delimit the displacement chamber ( 22 ) and which are assigned to one another, can be moved in opposite directions to one another in a common cylinder bore ( 20 ). 
     
     
         2 . The axial piston machine ( 1 ) according to  claim 1 , characterized in that the two displacement pistons ( 24 ,  26 ) assigned to one another are mounted opposite one another in the common cylinder bore ( 20 ). 
     
     
         3 . The axial piston machine ( 1 ) according to  claim 1 , characterized in that there is an inlet opening ( 42 ) and/or an outlet opening ( 44 ) of the cylinder bore ( 20 ) between the two displacement pistons ( 24 ,  26 ). 
     
     
         4 . The axial piston machine ( 1 ) according to  claim 1 , characterized in that an inlet opening ( 42 ) and/or an outlet opening ( 44 ) of the cylinder bore ( 20 ) runs, at least in sections, specifically on its section adjoining the cylinder bore ( 20 ), obliquely, and, specifically, transversely to the longitudinal axis of the cylinder bore ( 20 ), and preferably with the longitudinal axis of the cylinder bore ( 20 ) encloses an angle between 10 and 90°, specifically an angle between 45 and 75°. 
     
     
         5 . The axial piston machine ( 1 ) according to  claim 1 , characterized in that an inlet opening ( 42 ) and/or an outlet opening ( 44 ) is located on a jacket surface of the cylinder bore ( 20 ). 
     
     
         6 . The axial piston machine ( 1 ) according to  claim 1 , characterized in that between the two displacement pistons ( 24 ,  26 ) which are assigned to one another, there is an energy storage mechanism ( 163 ) which presses the two displacement pistons ( 24 ,  26 ) apart. 
     
     
         7 . The axial piston machine ( 1 ) according to  claim 1 , characterized in that the axial piston machine ( 1 ) has two swash plates ( 40 ,  45 ), by whose plate surfaces with a drive axle ( 12 ) of the axial piston machine ( 1 ) an angle of less than 90° at a time can be included. 
     
     
         8 . The axial piston machine ( 1 ) according to  claim 7 , characterized in that the displacement pistons ( 24 ,  26 ) which are located in a common cylinder bore ( 20 ) are held in contact with one swash plate ( 40 ,  45 ) at a time respectively. 
     
     
         9 . The axial piston machine ( 1 ) according to  claim 1 , characterized in that a low pressure port and a high pressure port of the axial piston machine ( 1 ) are located on opposite sides of the housing. 
     
     
         10 . The axial piston machine ( 1 ) according to  claim 1 , characterized in that an electrical motor/generator unit is integrated in the axial piston machine ( 101 ), and that the electric motor/generator means is a brushless direct current machine, in particular, that the electrical motor/generator means can be connected to an electrical direct current line and the electrical currents in the stator windings ( 198 ) of the electrical motor/generator means can be electronically commutatable.