Valve train with hydraulic lash adjustment

Details Valve train with hydraulic lash adjustment Valve train with hydraulic lash adjustment

2006-07-18

2006-07-18

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Tappet

C123S090480, C123S090330, C123S090350, C123S090360, C123S090610

Reexamination Certificate

active

07077090

ABSTRACT:
Valve train with hydraulic lash adjustment in the entire timing train, in which oil is delivered from the oil supply space of the hydraulic valve-lash adjuster (HLA) to the valve rocker arm via a hollow push rod, a choke limiting the oil discharge, the choke being designed in such a way that it seals off the push rod bore at the top when the oil pressure drops, that is to say when the engine is shut off, so that the oil is retained in the push rod bore (12) until—after the engine is started—the choke body (15, 22) opens up the discharge opening again.

REFERENCES:
patent: 3054392 (1962-09-01), Thompson
patent: 4004558 (1977-01-01), Scheibe
patent: 5394843 (1995-03-01), Decuir
patent: 6782855 (2004-08-01), Albertson et al.
patent: 2002/0096136 (2002-07-01), Spath et al.
patent: 1 983 334 (1968-04-01), None
patent: 1 985 446 (1968-05-01), None
patent: 1 293 788 (1969-04-01), None
patent: 199 19 245 (2000-11-01), None

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