Valve train of an internal combustion engine comprising a tappet and a tappet pushrod

The invention proposes a valve train of an internal combustion engine comprising a tappet ( 7 ) and a tappet pushrod ( 1 ) that is actuated by said tappet ( 7 ), said tappet pushrod ( 1 ) being at least partly hollow and comprising on one end ( 3 ), a first support ( 4 ) for an at least indirectly contacting pressure piston ( 5 ) of a hydraulic lash adjuster ( 6 ) of said tappet ( 7 ) that follows a periodic driving element, typically a cam. A second support ( 9 ) for a follower member ( 2 ), typically a rocker arm, is arranged on a further end ( 8 ) of the tappet pushrod ( 1 ). The first support ( 4 ) comprises a passage ( 10 ) for hydraulic medium that can be routed out of the pressure piston ( 5 ) during operation of the internal combustion engine into an interior ( 11 ) of the tappet pushrod ( 1 ), wherein a pipette means ( 12 ) is installed in the tappet pushrod ( 1 ) for retaining a hydraulic medium column during a standstill of the internal combustion engine. Through the pipette means ( 12 ) of the invention, an additional volume of hydraulic medium is available for a rapid filling of the reservoir enclosed by the pressure piston ( 5 ) with pressure medium after a re-starting of the internal combustion engine, so that a proper lash adjusting operation is guaranteed from the very beginning.