Variable electrohydraulic valve control system
AssigneeLsp Innovative Automotive Systems GmbH
InventorsHeinz LEIBER, Jochen KELLER, Thomas LEIBER, Lars KRAUSE
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Abstract
The invention relates to a variable electrohydraulic valve controller, comprising a piston, which is arranged in such a way that the piston acts on a valve, particularly a gas exchange valve of an internal combustion engine, in order to actuate said valve, a valve hydraulic chamber bounded by said piston, and at least one piston-cylinder unit, which is connected to the valve hydraulic chamber by means of a hydraulic line in which a switching valve is arranged. According to the invention, the piston (14) of the piston-cylinder unit (14, 15) is driven by a drive. particularly a motor.
Claims31
A variable electrohydraulic valve control system, including:
- a piston configured to actuate a valve,
- a valve hydraulic chamber delimited by the piston,
- at least one piston/cylinder unit connected to the valve hydraulic chamber by means of a hydraulic line in which a switching valve is arranged, and
- an electric motor drive configured to drive the piston of the piston/cylinder unit.
A method for the variable electrohydraulic control of one or more gas exchange valves of an internal combustion engine, the method including:
- supplying hydraulic medium to a valve hydraulic chamber associated with the one or more gas exchange valves by means of an electronically controllable device;
- and
- discharging the hydraulic medium from the valve hydraulic chamber.
Dependencies are inferred from the claim text.