Device for the control of at least one gas exchange valve

Details Device for the control of at least one gas exchange valve Device for the control of at least one gas exchange valve

2005-09-27

2005-09-27

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Hydraulic system

C123S090150, C123S090160

Reexamination Certificate

active

06948462

ABSTRACT:
A device is indicated for controlling at least one gas exchange valve for an combustion cylinder of an internal combustion engine, having an hydraulic actuator for valve actuation and having a high-pressure pump that supplies the actuator with a pressure medium. In order to reduce the production costs, the high-pressure pump is formed as a control-sleeve pump having a stroke-driven pump plunger that limits a pump chamber, and having a spool valve surrounding this plunger. In the pump plunger and spool valve, on the one hand a control groove that runs obliquely to the stroke direction is provided, and on the other hand a spill opening that cooperates therewith is provided, which together bring about a relief of pressure of the pump chamber when they overlap. For the controlling of the phase position and duration of the valve actuation, the pump plunger and the spool valve are able to be rotated relative to one another, and the spool valve is able to be displaced relative to the pump plunger.

REFERENCES:
patent: 2785667 (1957-03-01), Miller
patent: 3683874 (1972-08-01), Berlyn
patent: 5152258 (1992-10-01), Nunzio
patent: 5375419 (1994-12-01), Wright et al.
patent: 5857438 (1999-01-01), Barnard
patent: 30 14 028 (1981-10-01), None
patent: 198 26 047 (1999-12-01), None
patent: 0 909 883 (1999-04-01), None
patent: 2 287 583 (1976-05-01), None
patent: 59 037 222 (1984-02-01), None
Bosch, “Automotive Handbook”, 23rded., ISBN 3-528-03876-4, pp. 542 and 543 *, Described in the Specification.

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