| 摘要 |
An adjustable camshaft, in particular for an internal combustion engine for a motor vehicle, wherein two shafts, namely one inner shaft and one outer shaft ( 2, 1 ), each fixedly connected to the cams, are rotatable in relation to one another, to create this relative movement, a hydraulic adjusting device ( 5 ) is provided at one of its ends, in the adjusting device ( 5 ), oppositely rotatable adjusting elements ( 6, 7 ) are each fixedly connected to one of the two shafts ( 1, 2 ), and the outer shaft ( 1 ) adjacent to the adjusting device ( 5 ) is at least fixedly connected to a bearing ring ( 3 ) that is supporting the shafts ( 1, 2 ) in a stationary abutment ( 4 ), is to be designed with respect to the hydraulic fluid supply devices so as to yield a small design space. To this end, such a camshaft is characterized by the following features: at least one of the adjusting elements ( 6, 7 ) of the adjusting device ( 5 ) fixedly connected to the two shafts ( 1, 2 ) is at least partially in tight contact at the end with a connecting face ( 8 ) which is formed by the bearing ring ( 3 ) of the outer shaft ( 1 ) with respect to the two shafts ( 1, 2 ) including the bearing ring ( 3 ), the connecting face ( 8 ) has passages running axially through it between the hydraulic chambers of the adjusting device ( 5 ) and the hydraulic fluid feed channels ( 9, 10, 11, 12 ), the feed channels ( 9, 10, 11, 12 ) lead through the shafts and/or between the shafts ( 1, 2 ) and/or through ring gaps ( 10 <SUP>IV, </SUP> 11 <SUP>IV</SUP>) formed between the outer shaft ( 1 ) and the bearing ring ( 3 ) from the connecting face ( 8 ) to the filling areas in the circumferential surface of the bearing ring ( 3 ), the filling areas open into peripheral ring channels ( 9'', 10'', 11'', 12'' ), each allocated to the filling areas of a feed channel ( 9, 10, 11, 12 ).
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