Piston machine, especially fluid piston machine

Abstract

A piston machine, in particular a fluid piston machine, is described as having a plurality of piston units, which have differently sized output volumes for reasons of geometry, and are able to be deactivated individually for the discrete adjustment of a total output volume of the piston machine. In this context, the larger output volume of one of the piston units is twice as high as the next smaller output volume of one of the other piston units.

1 - 8 . (canceled) 
     
     
         9 . A piston machine, which is a fluid piston machine, comprising:
 a plurality of piston units, which have differently sized output volumes for reasons of geometry, and which deactivatable individually for the discrete adjustment of a total output volume of the piston machine;   wherein a greater output volume of one of the piston units is twice as high as a next smaller output volume of one of the other piston units.   
     
     
         10 . The piston machine of  claim 9 , wherein each of the piston units is assigned a switchable drain valve for deactivation. 
     
     
         11 . The piston machine of  claim 9 , wherein the piston units have a bypass channel assigned to the corresponding drain valve. 
     
     
         12 . The piston machine of  claim 9 , wherein there are at least three piston units. 
     
     
         13 . The piston machine of  claim 9 , wherein the position machine is at least one of a radial piston machine, an in-line piston machine, and an in-line piston pump. 
     
     
         14 . The piston machine of  claim 9 , wherein each of the piston units has at least one piston which is axially displaceable inside a cylinder. 
     
     
         15 . The piston machine of  claim 9 , wherein the differently sized output volumes are defined by differently sized cross-sectional areas of the cylinders and the pistons. 
     
     
         16 . The piston machine of  claim 9 , wherein the differently sized output volumes are defined by piston strokes of different sizes.