Camshaft arrangement

Abstract

A camshaft arrangement includes an adjustable camshaft and an adjuster for adjusting the camshaft. The adjustable camshaft includes an outer shaft and an inner shaft arranged rotatably in the outer shaft. The adjuster includes a stator connected with the outer shaft in a rotationally fixed manner, and a rotor connected in a rotationally fixed inner with the inner shaft via an axially inserted coupling. A bush is connected with the rotor in a rotationally fixed manner and has at least one channel for supplying a lubricant. The bush has on a face side that axially faces the inner shaft a form that together with a counter-form on the inner shaft provides the axially inserted coupling.

1 - 11 . (canceled) 
     
     
         12 . A camshaft arrangement, comprising:
 an adjustable camshaft and an adjuster for adjusting the camshaft,   the camshaft having an outer shaft and an inner shaft arranged rotatably in the outer shaft, the outer shaft and the inner shaft respectively connected with at least one associated cam in a rotationally fixed manner,   the adjuster including a stator connected with the outer shaft in a rotationally fixed manner, and a rotor,   the rotor connected in a rotationally fixed manner with the inner shaft via an axially inserted coupling, such that a rotation of the rotor relative to the stator leads to a relative rotation of the inner shaft to the outer shaft,   a bush connected with the rotor in a rotationally fixed manner and has at least one channel for supplying a lubricant, the at least one channel in operation for supplying with lubricant is fluidicially connected with a connection provided on an outer casing, and   wherein the bush has on a face side that axially faces the inner shaft a form that together with a counter-form on the inner shaft provides the axially inserted coupling.   
     
     
         13 . The camshaft arrangement according to  claim 12 , wherein the coupling is configured as an Oldham coupling. 
     
     
         14 . The camshaft arrangement according to  claim 12 , wherein:
 the outer shaft projects axially over the inner shaft with a receiving section on the side facing the bush, and   the bush is rotatably arranged in the receiving section.   
     
     
         15 . The camshaft arrangement according to  claim 14 , further comprising at least one elastic seal arranged radially between an outer shaft inner side of the receiving section and a bush outer side of the bush. 
     
     
         16 . The camshaft arrangement according to  claim 15 , further comprising a slide ring arranged radially between the outer shaft inner side or the bush outer side and the at least one elastic seal. 
     
     
         17 . The camshaft arrangement according to  claim 12 , wherein the bush is arranged radially freely in the outer shaft. 
     
     
         18 . The camshaft arrangement according to  claim 12 , wherein the rotor is rotatably mounted via a radially exterior outer shaft outer side of the outer shaft. 
     
     
         19 . The camshaft arrangement according to  claim 18 , wherein:
 the outer shaft has a projection, protruding axially and penetrating into the adjuster, and   the rotor is rotatably mounted on the outer shaft outer side of the projection.   
     
     
         20 . The camshaft arrangement according to  claim 12 , further comprising:
 a pin that penetrates axially into the bush and connects the bush with the rotor in a rotationally fixed manner, and   wherein the pin has a pin cavity that is fluidically connected with the interior of the bush.   
     
     
         21 . The camshaft arrangement according to  claim 12 , further comprising a drive wheel for driving the camshaft, wherein the drive wheel is formed in one part with the stator. 
     
     
         22 . The camshaft arrangement according to  claim 15 , wherein:
 the bush has a bush cavity that is closed on the side facing the form,   the bush has at least two channels, spaced axially with respect to one another, and are respectively connected fluidically with the bush cavity, and   the at least two channels are arranged axially between two seals.   
     
     
         23 . An internal combustion engine system, comprising: an internal combustion engine having at least two valves, and a camshaft arrangement for actuating the at least two valves, the camshaft arrangement including:
 an adjustable camshaft and an adjuster for adjusting the camshaft,   the camshaft having an outer shaft and an inner shaft arranged rotatably in the outer shaft, the outer shaft and the inner shaft respectively connected with at least one associated cam in a rotationally fixed manner,   the adjuster including a stator connected with the outer shaft in a rotationally fixed manner, and a rotor,   the rotor connected in a rotationally fixed manner with the inner shaft via an axially inserted coupling, such that a rotation of the rotor relative to the stator leads to a relative rotation of the inner shaft to the outer shaft,   a bush connected with the rotor in a rotationally fixed manner and having at least one channel for supplying a lubricant, the at least one channel in operation for supplying with lubricant is fluidicially connected with a connection provided on an outer casing,   wherein the bush has on a face side that axially faces the inner shaft a form that together with a counter-form on the inner shaft provides the axially inserted coupling.   
     
     
         24 . The internal combustion engine system according to  claim 23 , wherein the axially inserted coupling is configured as an Oldham coupling. 
     
     
         25 . The internal combustion engine system according to  claim 23 , wherein the outer shaft projects axially over the inner shaft with a receiving section on the side facing the bush, and the bush is rotatably arranged in the receiving section. 
     
     
         26 . The internal combustion engine system according to  claim 25 , wherein the camshaft arrangement further includes at least one elastic seal arranged radially between an outer shaft inner side of the receiving section and a bush outer side of the bush. 
     
     
         27 . The internal combustion engine system according to  claim 25 , wherein the bush is arranged radially freely in the outer shaft. 
     
     
         28 . The internal combustion engine system according to  claim 23 , wherein the rotor is rotatably mounted via a radially exterior outer shaft side of the outer shaft. 
     
     
         29 . The internal combustion engine system according to  claim 28 , wherein the outer shaft has a projection protruding axially and penetrating into the adjuster, and wherein the rotor is rotatably mounted on the outer shaft outer side of the projection. 
     
     
         30 . The internal combustion engine system according to  claim 23 , further comprising a pin that penetrates axially into the bush and connects the bush with the rotor in a rotationally fixed manner, wherein the pin has a pin cavity that is fluidically connected with an interior of the bush. 
     
     
         31 . The internal combustion engine system according to  claim 23 , further comprising a drive wheel for driving the camshaft, wherein the drive wheel is formed in one part with the stator.