A fluid pump inlet stabilizer dampener includes a deformable diaphragm separating an enclosure into a gas chamber and a liquid chamber; and a piston coupled to the deformable diaphragm and being movable with respect to a valve housing, wherein the piston is configured to be positioned in at least first, second, and third positions, wherein in the first position a first fluid flow path from a pressurized gas inlet port to the gas chamber is open, in the second position the first fluid flow path is closed, and in the third position the first fluid flow path is closed and a second fluid flow path that activates a venturi vacuum generator is open.

A hydraulic accumulator, in particular in the form of a piston accumulator, has an accumulator housing (10) and a separating element (20) arranged in the housing. The separating element is in the form of a piston, which separates a fluid side (22) from a gas side (24). At least the gas side (24) can be inspected, at least in part, by at least one sight glass (34, 36) that is fixed in the accumulator housing (10).

A gas piston accumulator with a piston-cylinder unit, the hydraulic space of which can be connected to a hydraulic line. A pressure piston biased with a biasing force acts on the hydraulic space in order to pressurize the hydraulic fluid in the hydraulic line with an accumulator pressure. The biasing force is achieved by a gas pressure in a gas space which is separated from the hydraulic space via the pressure piston, at least one cylinder base of the gas piston accumulator being assigned to the pressure piston as a mechanical stop, and the pressure piston having an axially set back piston main body, on the gas side of which and/or on the hydraulic side of which there protrudes a stop structure which is of reduced area compared to the respective pressure piston side and which can be brought into pressure contact with the cylinder base.

A pressure-booster output stabilizer includes: a first cylinder having therein a first chamber and a second chamber separated by a first piston; a second cylinder having therein a third chamber and a fourth chamber separated by a second piston; and a piston rod configured to couple the first piston and the second piston. The primary pressure of a pressure booster is supplied to the first chamber, the secondary pressure of the pressure booster is supplied to the fourth chamber, and the pressurized fluid is taken out from the fourth chamber.

An accumulator for storing fluid that includes a shell that defines an interior volume of the accumulator. The shell includes at least one port for providing fluid to a fluid system. The accumulator also includes an accumulator shaft disposed in the interior volume and extending at least partially across the interior volume from a first interior surface of the shell along a longitudinal axis of the shell, e.g., a central axis. The accumulator includes a piston-plate disposed in the interior volume such that the piston-plate and a second interior surface of the shell define a chamber in the interior volume. The accumulator further includes a motor disposed in the interior volume. The accumulator is configured such that rotational movement of the motor translates to linear movement of the piston-plate along the accumulator shaft.

An accumulator system that includes a housing. The housing defines a function chamber and a balance chamber. A piston moves axially within the housing. The piston separates the function chamber from the balance chamber. An electric actuator couples to and drives the piston within the housing to compress and drive a first fluid out of the function chamber.

A fluidic control system (1) for controlling a vehicle, which includes a controller (2) and a closed fluidic circuit. The circuit includes a pump (3) for pressurizing fluid in the circuit, valve means (40, 50, 60), an actuator (4, 5, 6) and a precharge accumulator (7). The valve means (40, 50, 60) is fluidly connected to the inlet and outlet of the pump (3) and the actuator (4, 6) is fluidly connected to the valve means (40, 50, 60) for selectively receiving pressurized fluid therefrom. The precharge accumulator (7) includes a movable member (73, FIG. 2) that describes a variable volume (71) fluidly connected to the circuit between the valve means (40, 50, 60) and the inlet of the pump (3). The system (1) also includes a sensor (70) for determining the position of the movable member (73) for estimating the quantity of fluid and/or detecting an abnormal pressure variation within the circuit.

A fluid pump inlet stabilizer dampener includes a deformable diaphragm separating an enclosure into a gas chamber and a liquid chamber; and a piston coupled to the deformable diaphragm and being movable with respect to a valve housing, wherein the piston is configured to be positioned in at least first, second, and third positions, wherein in the first position a first fluid flow path from a pressurized gas inlet port to the gas chamber is open, in the second position the first fluid flow path is closed, and in the third position the first fluid flow path is closed and a second fluid flow path that activates a venturi vacuum generator is open.

The invention concerns a device for the direct recovery of hydraulic energy in a machine, comprising at least one single-acting storage cylinder-piston device with a storage cylinder, a storage cylinder-piston and a storage cylinder chamber, with at least one differential cylinder-piston device with a differential cylinder comprising a separate rod side and base side, and with at least one hydraulic accumulator, which may be connected to the storage cylinder-piston device and/or the differential cylinder-piston device, wherein the potential energy of the storage cylinder-piston device, which retracts under a compressive load, may be at least partially stored in the hydraulic accumulator.

A hydraulic device includes a housing and a closure element arranged thereon. The closure element is connected to the housing by torsional welding.