Eco Holding 1 Gmbh

Mario Witopil

Dietmar Schulze

David Huber

A pneumatic valve for controlling a gaseous medium, the pneumatic valve including a housing including an inlet and an outlet; a primary piston that forms a primary stage in cooperation with a primary valve seat in the housing, wherein the primary piston is axially movable in a housing bore along a longitudinal axis to open and close a direct volume flow connection between the inlet and the outlet; a pilot piston that forms a pilot stage in cooperation with a pilot valve seat at or in the primary piston, wherein the pilot piston is operatively connected with an electromagnetic actuator for opening or closing a throttle bore in the primary piston, wherein the inlet is connectable with the outlet indirectly through the primary piston by the throttle bore.

Pneumatic valve for controlling a gaseous medium

A connecting rod for a variable compression internal combustion engine, the connecting rod an eccentrical element adjustment arrangement for adjusting an effective connecting rod length, the eccentrical element adjustment arrangement including a first cylinder including a first hydraulic chamber and a second cylinder including a second hydraulic chamber, a first inlet for feeding hydraulic fluid into the first cylinder from a supply and a first outlet for draining the hydraulic fluid from the first cylinder, a second inlet for feeding hydraulic fluid into the second cylinder from the supply and a second outlet for draining the hydraulic fluid from the second cylinder, a switch valve for controlling a hydraulic fluid flow, the switch valve including a piston that is movable in a housing, wherein the piston is displaceable into a first switching position or a second switching position, wherein the second outlet of the second cylinder is connected with the supply in the first switching position and the first outlet of the first cylinder is connected with the supply in the second switching position, wherein the first cylinder is associated with a first check valve which facilitates feeding hydraulic fluid into the first cylinder and which prevents draining the hydraulic fluid from the first cylinder, wherein the second cylinder is associated with a second check valve which facilitates feeding hydraulic fluid into the second cylinder and which prevents draining hydraulic fluid from the second cylinder, wherein the first cylinder and the second cylinder are connected so that hydraulic fluid is conductible from the first cylinder into the second cylinder directly with a defined pressure drop in the second switching position.

Growing community of inventors

Marktheidenfeld, Germany

Mario Witopil