Internal-combustion engines – Poppet valve operating mechanism – Hydraulic system
Reexamination Certificate
2006-08-04
2010-12-14
Chang, Ching (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
Hydraulic system
C123S090130, C123S090150, C137S625000
Reexamination Certificate
active
07849825
ABSTRACT:
A control valve (20) for a device for variably setting the control times of gas exchange valves (110, 111) of an internal combustion engine (100). Two working ports (A, B) and one supply port (24) are formed on an outer casing surface of a valve housing (22) of the control valve (20), the working ports (A, B) are arranged directly adjacent one another, and the supply port adjoins them. Further, two pressure medium ducts (40, 41) are formed on the control piston (30), at least one of the pressure medium ducts (40, 41) is embodied so that it is not rotationally symmetric with respect to a longitudinal axis (36) of the control piston (30).
REFERENCES:
patent: 6701877 (2004-03-01), Ottersbach et al.
patent: 7025023 (2006-04-01), Lehmann et al.
patent: 7533695 (2009-05-01), Strauss et al.
patent: 2004/0226526 (2004-11-01), Palesch et al.
patent: 19809175 (1999-09-01), None
patent: 19944535 (2001-01-01), None
patent: 102004035035 (2005-03-01), None
patent: 10346443 (2005-05-01), None
patent: 1447602 (2004-08-01), None
patent: 1596041 (2005-11-01), None
Bayrakdar Ali
Hoppe Jens
Ottersbach Rainer
Scheidig Gerhard
Chang Ching
Schaeffler Technologies GmbH & Co. KG
Volpe and Koenig P.C.
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