Hydraulic valve actuation system with valve lash adjustment

Details Hydraulic valve actuation system with valve lash adjustment Hydraulic valve actuation system with valve lash adjustment

2008-03-25

2008-03-25

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Hydraulic system

C123S090130, C091S392000

Reexamination Certificate

active

07347172

ABSTRACT:
A hydraulic valve actuation system has a hydraulic actuator connected with a valve in an engine. The hydraulic actuator has a boost pin enclosing a drive pin in a casing. The drive pin connects with and defines a valve lash with a valve stem of the valve. The hydraulic actuator applies and releases an actuating force through the drive pin to the valve stem that selectively opens and closes the valve during engine operation. The hydraulic actuator adjusts the valve lash during one or more rest periods. By adjusting the valve lash during the rest periods, the hydraulic actuator essentially adjusts the valve lash in response to one or more of the actual physical parameters of the valve during engine operation.

REFERENCES:
patent: 2019970 (1935-11-01), Hopkins
patent: 3179094 (1965-04-01), Ribeton
patent: 3661127 (1972-05-01), Cornell
patent: 4169449 (1979-10-01), Brock, Jr.
patent: 4200067 (1980-04-01), Trenne
patent: 4212323 (1980-07-01), Qureshi
patent: 4258672 (1981-03-01), Hietikko
patent: 4502425 (1985-03-01), Wride
patent: 4572114 (1986-02-01), Sickler
patent: 4656976 (1987-04-01), Rhoads
patent: 4664070 (1987-05-01), Meistrick et al.
patent: 4892067 (1990-01-01), Paul et al.
patent: 4901684 (1990-02-01), Wride
patent: 5002022 (1991-03-01), Perr
patent: 5012778 (1991-05-01), Pitzi
patent: 5117213 (1992-05-01), Kreuter et al.
patent: 5129373 (1992-07-01), Cuatt et al.
patent: 5191867 (1993-03-01), Glassey
patent: 5224683 (1993-07-01), Richeson
patent: 5248123 (1993-09-01), Richeson et al.
patent: 5287829 (1994-02-01), Rose
patent: 5339777 (1994-08-01), Cannon
patent: 5379737 (1995-01-01), Hu
patent: 5392749 (1995-02-01), Stockner et al.
patent: 5410994 (1995-05-01), Schechter
patent: 5419301 (1995-05-01), Schechter
patent: 5421359 (1995-06-01), Meister et al.
patent: 5448973 (1995-09-01), Meyer
patent: 5456221 (1995-10-01), Schechter
patent: 5456222 (1995-10-01), Schechter
patent: 5456223 (1995-10-01), Miller et al.
patent: 5462025 (1995-10-01), Israel et al.
patent: 5529030 (1996-06-01), Rose
patent: 5531192 (1996-07-01), Feucht et al.
patent: 5566652 (1996-10-01), Deppe
patent: 5595148 (1997-01-01), Letsche et al.
patent: 5636602 (1997-06-01), Meister
patent: 5638781 (1997-06-01), Sturman
patent: 5645031 (1997-07-01), Meneely
patent: 5787858 (1998-08-01), Meneely
patent: 5829397 (1998-11-01), Vorih et al.
patent: 5967105 (1999-10-01), Freeland
patent: 5970956 (1999-10-01), Sturman
patent: 6044815 (2000-04-01), de Ojeda
patent: 6116570 (2000-09-01), Bulgatz et al.
patent: 6263842 (2001-07-01), De Ojeda et al.
patent: 6338320 (2002-01-01), De Ojeda
patent: 6763790 (2004-07-01), Watson et al.
patent: 6786186 (2004-09-01), de Ojeda
patent: 6988471 (2006-01-01), Chang
patent: 2002/0121251 (2002-09-01), Watson et al.
patent: 2003/0015155 (2003-01-01), Turner et al.
patent: 2004107689 (2004-12-01), None

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