Hydraulic Drive for Accelerating and Braking Dynamically Moving Components

A hydraulic drive for accelerating and braking dynamically moving components, in particular valves in gas exchange controls of internal combustion engines and other reciprocating engines, wherein the hydraulic drive comprises the following:

• at least one component to be driven, in particular a valve, preferably a gas exchange valve or a plurality of gas exchange valves which can be actuated jointly via a valve bridge, of an internal combustion engine or another reciprocating engine;
• a working cylinder with comprising a pressure acting surface of a drive piston,
• at least one first pressure reservoir for providing a first pressure p1 of a hydraulic pressure medium,
• at least one restoring energy accumulator with a biasing force FFv, preferably configured as a spring, which engages at the component or at the gas exchange valve, respectively,
• at least one hydraulic base pressure reservoir, which has a lower pressure p0 than than that of the first pressure reservoir,
• characterized in that
• in a first connecting line between the first hydraulic pressure reservoir and the working cylinder there is provided a controllable opening of a first valve comprising at least one, preferably spring-loaded, check valve, which is arranged serially in the flowpath upstream, within or downstream, allowing the pressure medium to flow in a direction towards the working cylinder but preventing a backflow in a direction towards the pressure reservoir.