| 摘要 |
A variable cam follower ( 1 ) is provided for changeable transmission of a lifting movement of a cam to valve train elements allocated to the cam follower ( 1 ) in an internal combustion engine. The cam follower ( 1 ) includes a hydraulic force transmission device ( 19 ) with a variable length pressure space ( 18 ), which is bounded by a hollow cylindrical recess ( 15 ) of a first cam follower part ( 3 ) and by a rod ( 16 ) guided in the hollow cylindrical recess ( 15 ). The rod is part of a second cam follower part ( 9 ) that can move telescopically relative to the first cam follower part ( 3 ). The pressure space ( 18 ) is closable by a slide ( 21 a, 21 b) arranged within the cam follower ( 1 ) and acted upon by an adjustable control pressure (p), wherein an opening ( 23 ), which extends from the pressure space ( 18 ) and opens into a channel ( 20 a, 20 b), in which the slide ( 21 a, 21 b) runs, is formed in a base ( 13 ) of the hollow cylindrical recess ( 15 ).
|
