Electrohydraulic valve controller

Details Electrohydraulic valve controller Electrohydraulic valve controller

2005-05-17

2005-05-17

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Hydraulic system

C123S090110, C251S012000

Reexamination Certificate

active

06892683

ABSTRACT:
The invention relates to an electrohydraulic valve controller for controlling a gas exchange valve in internal combustion engines, having a hydraulically actuatable control valve including a control valve piston which can be acted upon, via electrically actuatable valves, by a hydraulic medium that is under pressure, and a hydraulically acting valve brake is assigned to the control valve piston. The valve brake (46) includes a temperature compensation for the hydraulic medium.

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patent: 5937806 (1999-08-01), Lyko et al.
patent: 6474277 (2002-11-01), Vanderpoel et al.
patent: 39 11 495 (1990-08-01), None
patent: 0 915 235 (1999-05-01), None
patent: 9966178 (1999-12-01), None
patent: 01 20139 (2001-03-01), None

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