| 摘要 |
A tappet (1) for a valve drive of an internal combustion engine is so designed as to be switchable for different valve lifts and includes an outer circular ring shaped section (5) which encloses a circular section (6). Both sections (5, 6) are acted upon by cams of different lifts, and selectively interconnectable together by coupling elements (9). According to the invention, a juncture (12) for hydraulic fluid is positioned in the skirt (2) and extending from a feed bore (13) in the cylinder head (4) at a lowest point of the tappet (1), when viewed in direction of gravity, in order to install the tappet (1) in an extreme slanted disposition. In opposition thereto, a port (21) of the channel (27), following the juncture (12), is arranged at a highest section of the tappet (1), when viewed in the direction of gravity. Thus, after shut-down of the internal combustion engine, a reservoir (17) can empty only to the level of the port (21), so that the tappet (1) is sufficiently filled with hydraulic fluid when restarting the internal combustion engine.
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