Abstract: A hydraulic cartridge valve includes a sleeve with a longitudinal bore that forms a working port via an end opening. A plunger is accommodated for linear motion in the longitudinal bore. The sleeve is penetrated in an inlet port region by a first radial bore that extends radially with respect to a longitudinal axis of the hydraulic cartridge valve. The sleeve is penetrated in a return port region by a second radial bore that extends radially with respect to the longitudinal axis. A first fluid flow path extends from the inlet port to the working port and a second fluid flow path extends from the working port to the return port. The plunger has third and fourth radial bores that extend radially with respect to the longitudinal axis and form part of the first and second fluid flow paths, respectively.

Abstract: A valve piston includes a section that has a circular-cylindrical configuration with a constant diameter. A plurality of longitudinal grooves are made in the section with the grooves parallel to one another and distributed uniformly on the circumference. The remaining webs enable the section of the valve piston to be moved in the valve without tilting. Each longitudinal groove has one steeper flank and one less steep flank. The steeper flank is set against a pressure medium that flows in. A slide valve includes the valve piston.

Abstract: A hydraulic cartridge valve includes a sleeve with a longitudinal bore that forms a working port via an end opening. A plunger is accommodated for linear motion in the longitudinal bore. The sleeve is penetrated in an inlet port region by a first radial bore that extends radially with respect to a longitudinal axis of the hydraulic cartridge valve. The sleeve is penetrated in a return port region by a second radial bore that extends radially with respect to the longitudinal axis. A first fluid flow path extends from the inlet port to the working port and a second fluid flow path extends from the working port to the return port. The plunger has third and fourth radial bores that extend radially with respect to the longitudinal axis and form part of the first and second fluid flow paths, respectively.

Abstract: The invention relates to a valve of an arbitrary type, comprising a valve body (4) for setting an opening cross-section through which pressure medium flows and a barrier body (22) against or around which pressure medium flows, characterized in that the barrier body (22) is attached to the valve body (4). Due to the flow against or around the barrier body (22), a force is generated, particularly in the opening direction of the valve body (4).

Abstract: A displacement machine has at least two adjacent working chambers which are defined by: a) a common first wall section made of an elastic material; b) a common second wall section; and c) a movable element which is movable with respect to the first wall section, which movable element has a press-on section that presses the first wall section against the second wall section to form a common sealing region between the two adjacent working chambers, which common sealing region moves with the movement of the press-on section. At least one of the first and second wall sections is provided with a non-smooth profile on the inner side of the working chambers.

Abstract: A pressure system having at least two pressure circuits each including a respective positive-displacement element and each compression side of the positive-displacement elements being in operative communication via a compensation device in such a way that a pressure increase in the first pressure circuit leads to a pressure increase in the second pressure circuit, and the pressure increase of the first pressure circuit is essentially reduced by the amount of the pressure increase of the second pressure circuit, and the reduction in the pressure increase is less than a defined limit value.

Abstract: A spray device for fluids having a nozzle and an actuator for regulating the fluid flow through the nozzle exit. In addition, a shock wave actuator or HIFU actuator is provided for generating shock waves or HIFU waves in the fluid present in the nozzle.

Abstract: A device for regulating a pressure and/or a volume flow of a fluid, including a cavitation chamber having a ram device, to generate a ram pressure region, and having at least one outlet orifice for a discharge of the fluid from the cavitation chamber, at least one cavitation region being able to be generated in the cavitation chamber, and the outlet orifice being situated so that the fluid flows between the cavitation region and the ram pressure region to the outlet orifice. Also described is a method for regulating a pressure and/or a volume flow.

Abstract: The invention relates to a device for damping liquid pressure waves in conduits and containers that conduct and/or store liquids, in particular in conduits and containers of injection systems in motor vehicles. To convert vibrational energy into thermal energy, at least one reflection surface for reflecting at least some of the liquid pressure waves is provided in the container or in the conduit in a region that is separate from the remainder of the container or the conduit.

Abstract: The invention relates to a device (1) for controlling the flow speed of a fluid flow in a hydraulic line (3) and has a line segment (2) that permits the fluid to flow through as well as an apparatus (4) for generating a homogenous two-phase mixture (5) in the fluid in the line segment (2).

Abstract: A displacement machine has at least two adjacent working chambers which are defined by: a) a common first wall section made of an elastic material; b) a common second wall section; and c) a movable element which is movable with respect to the first wall section, which movable element has a press-on section that presses the first wall section against the second wall section to form a common sealing region between the two adjacent working chambers, which common sealing region moves with the movement of the press-on section. At least one of the first and second wall sections is provided with a non-smooth profile on the inner side of the working chambers.