Internal-combustion engines – Poppet valve operating mechanism – Hydraulic system
Reexamination Certificate
2005-05-03
2005-05-03
Denion, Thomas (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Hydraulic system
C123S090150, C123S19800E, C417S044100, C417S322000, C417S410100, C417S410200, C222S287000, C222S309000, C222S401000, C222S402000, C060S426000
Reexamination Certificate
active
06886509
ABSTRACT:
The invention relates to a hydraulic actuator for actuating a gas exchange valve (1) of an internal combustion engine, which valve is especially closed by the effect of a spring. The actuator is configured by a feed pump (6) with intermittent and thus variable delivery. The feed pump (6) has a high frequency and can be equipped for this purpose with piezoelectric, magnetorestrictive and/or electrochemical actuators as the feed elements. Optionally, the feed pump (6) can be operated with a stop valve (7) that is disposed downstream of the gas exchange valve (1) and that is controlled or regulated depending on the feed pump.
REFERENCES:
patent: 4200067 (1980-04-01), Trenne
patent: 4206728 (1980-06-01), Trenne
patent: 4593658 (1986-06-01), Moloney
patent: 5101797 (1992-04-01), Sturz et al.
patent: 6321702 (2001-11-01), Diehl et al.
patent: 536 934 (1973-06-01), None
patent: 198 26 045 (2000-01-01), None
patent: 198 39 732 (2000-03-01), None
patent: 5-202708 (1993-08-01), None
patent: 05202712 (1993-08-01), None
patent: 09329009 (1997-12-01), None
patent: WO 9966178 (1999-12-01), None
Camless Engine, Schechter et al, Sae Technical Paper Series, 960581, Feb. 1996 (Enclosed).
Collard & Roe P.C.
Denion Thomas
Mahle Ventiltrieb GmbH
Riddle Kyle M.
LandOfFree
Hydraulic actuator for actuating a gas exchange valve of an... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic actuator for actuating a gas exchange valve of an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic actuator for actuating a gas exchange valve of an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3405618