Pump

Abstract

The invention relates to a pump ( 2 ) which is constructed to convey coolant in an engine and wherein a tensioning element ( 4 ) designed for tensioning a drive member of the engine is integrated. Also integrated in this pump ( 2 ) is a closed pump wheel.

1 . Pump which is designed for conveying coolant in an engine ( 24 ) and in which a tensioning element ( 4 ) is integrated, which is designed to tension a drive member of the engine ( 24 ).  
   
   
       2 . Pump according to  claim 1  which comprises a pump housing ( 3 ), the tensioning element ( 4 ) being inserted in the pump housing ( 3 ).  
   
   
       3 . Pump according to  claim 1 , wherein the tensioning element ( 4 ) is accommodated by a hydroelement.  
   
   
       4 . Pump according to  claim 1  wherein the tensioning element ( 4 ) is in the form of a chain tensioner.  
   
   
       5 . Pump according to  claim 1  which is to be driven by the drive member of a primary control assembly of the engine ( 24 ).  
   
   
       6 . Pump according to  claim 1  which comprises a shaft ( 10 ) mounted on a plain bearing ( 26 ).  
   
   
       7 . Pump according to  claim 6 , wherein a drive wheel ( 8 ) cooperating with the drive member is attached to the shaft ( 10 ).  
   
   
       8 . Pump according to  claim 1  in which a closed pump wheel ( 6 ) is integrated.  
   
   
       9 . Pump which is designed for conveying coolant in an engine ( 24 ) and in which a closed pump wheel ( 6 ) is integrated.  
   
   
       10 . Pump according to  claim 9 , wherein a washer ( 12 ) is arranged on a rear side of the closed pump wheel ( 6 ), a face seal ( 14 ) pressing this washer ( 12 ) against the closed pump wheel ( 6 ).  
   
   
       11 . Pump according to  claim 9  wherein the closed pump wheel ( 6 ) is screwed on a shaft ( 10 ), while a drive wheel ( 8 ) cooperating with the drive member is attached to the shaft ( 10 ).  
   
   
       12 . Pump according to  claim 11 , wherein the shaft ( 10 ) is mounted on a plain bearing ( 26 ).  
   
   
       13 . Pump according to  claim 9  wherein the shaft ( 10 ) is sealed off by a radial seal.  
   
   
       14 . Pump according to  claim 9  in which is integrated a tensioning element ( 4 ) which is designed to tension the drive member of the engine ( 24 ).  
   
   
       15 . Pump according to  claim 1  which has a leakage chamber, this leakage chamber being separated from an oil chamber by a shaft seal ( 11 ).  
   
   
       16 . Pump according to  claim 15 , wherein the leakage chamber is sealed off from the oil chamber and a water chamber ( 34 ) by an O-ring ( 32 ).  
   
   
       17 . Pump according to  claim 15  wherein the leakage chamber is vented through a bore via an annular chamber between the pump housing ( 3 ) and a cylinder crank case ( 25 ) of the engine ( 24 ).  
   
   
       18 . Pump according to  claim 1  and which is in the form of a water pump  
   
   
       19 . Tensioning element which is designed to tension a drive member of an engine ( 24 ) and for integration in a pump ( 2 ) which serves to deliver coolant within this engine ( 24 ).  
   
   
       20 . Tensioning element according to  claim 19 , which is constructed as a chain tensioner.  
   
   
       21 . Engine which comprises a drive member and a pump ( 2 ) according to  claim 1 .  
   
   
       22 . Engine according to  claim 21 , wherein the drive member cooperates with at least one component of the pump ( 2 ).  
   
   
       23 . Engine according to  claim 22 , wherein the drive member cooperates with a tensioning element ( 4 ) integrated in the pump ( 2 ).  
   
   
       24 . Engine according to  claim 23 , wherein the drive member cooperates with a pump wheel ( 6 ) integrated in the pump.