Patent ID: 7637237
Filing Date: 2009-12-29
Classification: F01L,Y10T

Abstract:
1. A switchable double tappet for a valve train of an internal combustion engine, comprising a cylindrical housing, having an outer casing that can be arranged for oscillation in a guide of the internal combustion engine, the housing has a borehole on the camshaft side, in which an inner element can move axially relative to the borehole, a cam contact surface is provided a lower head of the inner element and projects past an edge of the borehole or extends to a region of the edge, on the other side, at least one coupling slide is located in an interior of the inner element in a decoupled state, and the coupling slide is displaceable for a coupled state in or under a respective catch surface of the housing, between an upper head of the inner element facing away from the lower head and a lower side of a crossbar of the housing, at least one lost-motion spring is tensioned, and in a borehole of the housing facing away from the camshaft above the crossbar, there are two supports located next to one another, on each of which one end of a tappet push rod can be supported.