Valve train of an internal combustion engine comprising a...

Details Valve train of an internal combustion engine comprising a... Valve train of an internal combustion engine comprising a...

2007-07-24

2007-07-24

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Rod

C123S090480, C123S090350, C123S090550, C074S569000, C074S587000

Reexamination Certificate

active

11304460

ABSTRACT:
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.

REFERENCES:
patent: 2857895 (1958-10-01), Scheibe
patent: 3054392 (1962-09-01), Thompson
patent: 3144010 (1964-08-01), Van Slooten
patent: 3908615 (1975-09-01), Hayward
patent: 4602597 (1986-07-01), Rhoads
patent: 7077090 (2006-07-01), Sailer et al.
patent: 7174870 (2007-02-01), Rutsey
patent: 19 83 334 (1968-04-01), None
patent: 19 92 038 (1968-08-01), None
patent: 33 43 324 (1984-06-01), None
patent: 10 2004 019 282 (2005-12-01), None

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