| 摘要 |
The invention relates to a valve train of an internal combustion engine having hydraulic actuator for controlling a valve control device a function of engine speed and having a pump driven by the engine for supplying the actuator with working fluid. The pump is configured as a suction-controlled ring-gear pump having a sealing web ending over a plurality of pockets and featuring a delivery characteristic as a function of speed which is adapted to the working fluid requirement of said actuator. In addition, an internal gear pump is provided, particularly useful for such a valve train.
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