Camshaft adjuster

Abstract

A camshaft adjustment device for an internal combustion engine, having a stator ( 1 ) that can be driven by a crankshaft of the internal combustion engine, having a rotor ( 3 ) that can be connected rotationally conjointly to the camshaft, having working chambers which are arranged between the stator ( 1 ) and the rotor ( 3 ) and which are divided into first and second pressure chambers (A, B) by vanes ( 18 ) assigned to the rotor ( 3 ), wherein, in the rotor ( 3 ) there are provided first pressure medium ducts ( 5 ) which issue into the first pressure chambers (A) and second pressure medium ducts ( 6 ) which issue into the second pressure chambers (B), wherein the rotor ( 3 ) has an inner ring ( 15 ) and an outer ring ( 14 ) which are connected to one another by means of a disk-shaped web ( 9 ), and the first pressure medium ducts ( 5 ) are arranged on one side of the web ( 9 ) and the second pressure medium ducts ( 6 ) are arranged on the other side of the web ( 9 ), and the first and second pressure medium ducts ( 5,6 ) are formed by pressure medium guiding sleeves.

1 - 8 . (canceled) 
     
     
         9 . A camshaft adjuster comprising:
 a stator drivable by a crankshaft;   a rotor rotatably fixedly connectable to the camshaft;   working chambers situated between the stator and the rotor, the working chambers divided into first and second pressure chambers by vanes assigned to the rotor;   first pressure medium channels being provided in the rotor, the first pressure medium channels emptying into the first pressure chambers, and second pressure medium channels emptying into the second pressure chambers;   the rotor including an inner ring and an outer ring connected to each other by a disk-shaped web; and   the first pressure medium channels being situated on one side of the web, and the second pressure medium channels being situated on an other side of the web.   
     
     
         10 . The camshaft adjuster as recited in  claim 9  wherein the first and second pressure medium channels are formed by pressure medium guiding sleeves. 
     
     
         11 . The camshaft adjuster as recited in  claim 9  wherein the inner ring and the outer ring are situated concentrically with respect to each other. 
     
     
         12 . The camshaft adjuster as recited in  claim 10  wherein first pressure medium guiding sleeves of the pressure medium guiding sleeves are situated in a first plane, and second pressure medium guiding sleeves of the pressure medium guiding sleeves are situated in a second plane. 
     
     
         13 . The camshaft adjuster as recited in  claim 12  wherein the first plane is situated in parallel to the second plane. 
     
     
         14 . The camshaft adjuster as recited in  claim 12  wherein the first and second pressure medium guiding sleeves are situated equidistantly from each other in the first and second planes in the circumferential direction. 
     
     
         15 . The camshaft adjuster as recited in  claim 10  wherein the pressure medium guiding sleeves are formed by straight tube sections. 
     
     
         16 . The camshaft adjuster as recited in  claim 10  wherein the first and second pressure medium guiding sleeves have identical masses.