| 摘要 |
The invention relates to a device for the variable actuation of gas exchange valves for internal combustion engines, wherein at least one cam ( 2 ) pertaining to a camshaft ( 1 ) mounted in a housing rotates according to the engine speed. The cam ( 2 ) first drives an intermediate member ( 4 ) which performs a clear oscillating, rotary movement and has a rotatioral axis ( 7 ) that can be displaced in the housing parallel to itself along a curve of displacement ( 8 ), said intermediate member comprising a control cam ( 5 ) having a lifting region ( 5 b) and actuating an output member ( 11 ) that, in turn, actuates at least one valve ( 13 ). The aim of the invention is to enable one such device to be reliably controlled To this end, the control cam ( 5 ) has a catch region ( 5 a), and the intermediate member ( 4 ) is mounted on a bearing having an axis which corresponds to the rotational axis ( 7 ), said bearing being arranged in such a way that it is guided in a forced manner and can be displaced parallel to the curve of displacement ( 8, 28, 35 ), by means of an articulation ( 16, 24, 26 ) connected to the cylinder head or the housing or by a slide ( 34 ) that is guided in the housing in a positively locking manner. The invention also relates to a method for operating an internal combustion engine comprising a plurality of cylinders using at least one of the inventive devices.
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