Bearing arrangement for a camshaft of an internal combustion engine and crankcase with same

Abstract

A bearing arrangement for a camshaft of an internal combustion engine, the internal combustion engine including a crankcase and a camshaft including a camshaft gear wheel and a side including a shaft end allocated to the camshaft gear wheel, includes: an axial bearing configured for supporting the camshaft on the side of the shaft end, the axial bearing including a plain bearing body, which includes a mounting surface, is crescent-shaped, and is configured for axially supporting the camshaft and for being attached to the crankcase by way of the mounting interface.

What is claimed is: 
     
         1 . A bearing arrangement for a camshaft of an internal combustion engine, the internal combustion engine including a crankcase and a camshaft including a camshaft gear wheel and a side including a shaft end allocated to the camshaft gear wheel, the bearing arrangement comprising:
 an axial bearing configured for supporting the camshaft on the side of the shaft end, the axial bearing including a plain bearing body, which includes a mounting surface, is crescent-shaped, and is configured for axially supporting the camshaft and for being attached to the crankcase by way of the mounting interface.   
     
     
         2 . The bearing arrangement according to  claim 1 , wherein the camshaft includes a bearing groove that is circumferentially incorporated into a circumference of the camshaft, the plain bearing body (a) is configured for being inserted into the bearing groove for an axial support of the camshaft in order to support the camshaft axially in an inserted state of the plain body bearing, and (b) is configured for being attached in the inserted state to the crankcase by way of the mounting interface. 
     
     
         3 . The bearing arrangement according to  claim 1 , wherein the plain bearing body includes a bearing groove and is configured for being slid onto a corresponding shoulder of the camshaft for an axial support of the camshaft, for axially supporting the camshaft in a slid-on state, and for being attached to the crankcase in the slid-on state by way of the mounting interface. 
     
     
         4 . The bearing arrangement according to  claim 1 , wherein the mounting interface includes a contact surface corresponding to a contact surface of the crankcase. 
     
     
         5 . The bearing arrangement according to  claim 4 , wherein the plain bearing body is configured for being axially screwed to the crankcase. 
     
     
         6 . The bearing arrangement according to  claim 5 , wherein the plain bearing body includes an axial direction and a region of the mounting interface, wherein the plain bearing body includes an increased material thickness in the axial direction in the region of mounting interface. 
     
     
         7 . The bearing arrangement according to  claim 6 , wherein the plain bearing body includes a first side, the increased material thickness being formed as a protrusion on the first side. 
     
     
         8 . The bearing arrangement according to  claim 1 , wherein the plain bearing body includes a first bearing surface and a second bearing surface opposite first bearing surface, wherein the camshaft includes a bearing groove that is circumferentially incorporated into a circumference of the camshaft, the bearing groove including two groove edges opposite one another, and wherein the first bearing surface and the second bearing surface in an inserted state each facing respectively one of the two groove edges. 
     
     
         9 . The bearing arrangement according to  claim 8 , wherein an axial distance between opposite ones of the two groove edges is greater than an axial distance between opposite ones of the first bearing surface and the second bearing surface, such that, in the inserted state, the bearing arrangement is configured such that an axial bearing gap forms between the first bearing surface and the second bearing surface and the two groove edges respectively. 
     
     
         10 . The bearing arrangement according to  claim 9 , wherein the plain bearing body includes a fluid channel that can be connected in a fluid-conducting manner to a lubricant supply, wherein the fluid channel includes a first outlet and a second outlet respectively for the first bearing surface and the second bearing surface, the first outlet and the second outlet opening respectively into the first bearing surface and the second bearing surface. 
     
     
         11 . The bearing arrangement according to  claim 10 , wherein the plain bearing body includes an inlet side and an outlet side in a circumferential direction of the plain bearing body relative to a direction of rotation of the camshaft. 
     
     
         12 . The bearing arrangement according to  claim 11 , wherein the first outlet and the second outlet are positioned closer to the inlet side than to the outlet side. 
     
     
         13 . The bearing arrangement according to  claim 12 , wherein the first outlet and the second outlet are aligned coaxially relative to one another. 
     
     
         14 . The bearing arrangement according to  claim 8 , wherein the first bearing surface and the second bearing surface have an inlet end and an end face in a circumferential direction of the plain bearing body at the inlet end, where a chamfer is formed respectively, such that the plain bearing body is tapered in a wedge shape at the inlet end. 
     
     
         15 . The bearing arrangement according to  claim 1 , wherein the bearing arrangement further includes a radial bearing on the side of the shaft end, which supports the camshaft radially at the crankcase, wherein the radial bearing is arranged in a bearing seat of the crankcase, and wherein the axial bearing is arranged between the radial bearing and the camshaft gear wheel. 
     
     
         16 . An internal combustion engine, comprising:
 a crankcase;   a camshaft;   a camshaft gear wheel, which is attached to the camshaft and is configured for driving the camshaft, the camshaft including a side including a shaft end allocated to the camshaft gear wheel; and   a bearing arrangement for the camshaft, the bearing arrangement including an axial bearing configured for supporting the camshaft on the side of the shaft end, the axial bearing including a plain bearing body, which includes a mounting surface, is crescent-shaped, and is configured for axially supporting the camshaft and for being attached to the crankcase by way of the mounting interface.