| 摘要 |
A hydraulic tappet for internal combustion engines with overhead camshaft has hollow cylindrical housing that is sealed at one end by a tappet floor that is mechanically linked to a cam of a camshaft. Longitudinally borne in the housing is a hydraulic play compensation unit, the pressure chamber of which, for exchanging fluid, can be connected to a fluid reservoir that is sealed to the outside. For compensating volume from the fluid reservoir, a largely circular compensation element that limits the fluid reservoir is provided and that is provided with at least one undulation and/or fold. The compensation element is arranged such that the center region is freely movable and the undulation and/or fold opens or closes depending on the required volume compensation.
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