Multi-Piston Pump

Abstract

The present invention relates to a multi-piston pump comprising a housing, a first pump unit having a plurality of piston pumps for the pressure supply of a first pressure circuit, a second pump unit having a plurality of piston pumps for the pressure supply of a second pressure circuit, a drive and an eccentric unit having a first eccentric and a second eccentric, wherein the first and the second eccentrics drive the plurality of piston pumps, and wherein the first and second pump units comprise in each case at least one piston pump which can be driven by the first eccentric and one piston pump which can be driven by the second eccentric. In that in each case, one piston pump which is driven by the first eccentric is arranged parallel to a piston pump which is driven by the second eccentric.

1 - 7 . (canceled) 
   
   
       8 . In a multi-piston pump, including a housing, a first pump unit having a plurality of piston pumps for supplying pressure to a first pressure circuit, a second pump unit having a plurality of piston pumps for supplying pressure to a second pressure circuit, a drive mechanism and an eccentric unit having a first eccentric and a second eccentric, in which the first and second eccentrics each drive the plurality of piston pumps, and the first and second pump units each include at least one piston pump which is drivable by the first eccentric and one piston pump which is drivable by the second eccentric, the improvement wherein one piston pump each, driven by the first eccentric, is disposed parallel to a respective piston pump driven by the second eccentric. 
   
   
       9 . The multi-piston pump as defined by  claim 8 , wherein the first and second pump units each comprise three piston pumps. 
   
   
       10 . The multi-piston pump as defined by  claim 9 , wherein the three piston pumps associated with the first eccentric and the three piston pumps associated with the second eccentric are each disposed adjacent one another by an angle of 120°. 
   
   
       11 . The multi-piston pump as defined by  claim 8 , wherein the eccentrics are disposed at an angle to one another. 
   
   
       12 . The multi-piston pump as defined by  claim 9 , wherein the eccentrics are disposed at an angle to one another. 
   
   
       13 . The multi-piston pump as defined by  claim 10 , wherein the eccentrics are disposed at an angle to one another. 
   
   
       14 . The multi-piston pump as defined by  claim 11 , wherein the angle at which the eccentrics are disposed relative to one another is approximately 150°. 
   
   
       15 . The multi-piston pump as defined by  claim 12 , wherein the angle at which the eccentrics are disposed relative to one another is approximately 150°. 
   
   
       16 . The multi-piston pump as defined by  claim 13 , wherein the angle at which the eccentrics are disposed relative to one another is approximately 150°. 
   
   
       17 . The multi-piston pump as defined by  claim 8 , wherein the piston pumps of the first pump unit are disposed in a first half of the multi-piston pump, and the piston pumps of the second pump unit are disposed in a second half of the multi-piston pump. 
   
   
       18 . The multi-piston pump as defined by  claim 9 , wherein the piston pumps of the first pump unit are disposed in a first half of the multi-piston pump, and the piston pumps of the second pump unit are disposed in a second half of the multi-piston pump. 
   
   
       19 . The multi-piston pump as defined by  claim 10 , wherein the piston pumps of the first pump unit are disposed in a first half of the multi-piston pump, and the piston pumps of the second pump unit are disposed in a second half of the multi-piston pump. 
   
   
       20 . The multi-piston pump as defined by  claim 11 , wherein the piston pumps of the first pump unit are disposed in a first half of the multi-piston pump, and the piston pumps of the second pump unit are disposed in a second half of the multi-piston pump. 
   
   
       21 . The multi-piston pump as defined by  claim 14 , wherein the piston pumps of the first pump unit are disposed in a first half of the multi-piston pump, and the piston pumps of the second pump unit are disposed in a second half of the multi-piston pump. 
   
   
       22 . The multi-piston pump as defined by  claim 15 , wherein the piston pumps of the first pump unit are disposed in a first half of the multi-piston pump, and the piston pumps of the second pump unit are disposed in a second half of the multi-piston pump. 
   
   
       23 . The multi-piston pump as defined by  claim 17 , wherein the piston pumps of one pump unit are disposed in an angular range of approximately 120° in the first half and/or the second half. 
   
   
       24 . The multi-piston pump as defined by  claim 18 , wherein the piston pumps of one pump unit are disposed in an angular range of approximately 120° in the first half and/or the second half. 
   
   
       25 . The multi-piston pump as defined by  claim 19 , wherein the piston pumps of one pump unit are disposed in an angular range of approximately 120° in the first half and/or the second half. 
   
   
       26 . The multi-piston pump as defined by  claim 20 , wherein the piston pumps of one pump unit are disposed in an angular range of approximately 120° in the first half and/or the second half. 
   
   
       27 . The multi-piston pump as defined by  claim 21 , wherein the piston pumps of one pump unit are disposed in an angular range of approximately 120° in the first half and/or the second half.