Abstract: A device for choking a fluid flow, with a pot-like base body, in the base of which a first passage opening is arranged, and a closing body guided axially moveably in the pot-like base body against a spring force of a spring element and having a second passage opening that forms a static choke point with a predefined fixed opening cross section. The closing body in combination with the spring element and the first passage opening forms a dynamic choke point with a dynamic opening cross section that is variably adjustable depending on a pressure difference.

Abstract: A hydraulic unit of a vehicle brake system includes at least one pump element that is driven via an eccentric, which is enclosed by an eccentric chamber. The hydraulic unit also includes a vacuum pump that is configured to maintain a vacuum in the eccentric chamber while the hydraulic unit is in operation.

Abstract: A piston pump, in particular as a pressure generator in an electronically slip-controllable vehicle brake system, includes a pump cylinder, a drivable piston, a pump working chamber, a valve space, and a valve. The drivable piston is slidably accommodated in the pump cylinder. The pump working chamber is bounded by the piston and the pump cylinder. The valve controls a supply of pressure medium to the pump working chamber. The valve has a conical valve seat and a closing element having a domed shell section that interacts with the valve seat. The valve seat surrounds the valve space, into which the closing element plunges, at least up to an imaginary center point of the domed shell section, when the valve seat is closed or open.

Abstract: A device for choking a fluid flow includes a pot-like base body, in the base of which a first passage opening is arranged, and a closing body guided axially moveably in the pot-like base body against a spring force of a spring element and having a second passage opening that forms a static choke point with a predefined fixed opening cross section. The closing body in combination with the spring element and the first passage opening forms a dynamic choke point with a dynamic opening cross section that is variably adjustable depending on a pressure difference.

Abstract: A hydraulic unit, in particular a hydraulic unit for a slip-controllable vehicle brake system, includes a housing block, a pump, and a damping device. The pump has an intake side and a delivery side. The housing block has a pump receptacle that holds the pump, a first fluid duct that intersects the pump receptacle in a region of the delivery side of the pump, and a second fluid duct opening into the pump receptacle in the region of the delivery side of the pump, and a first separation point that seals off the first fluid duct from the second fluid duct. The damping device damps pulsations and reduces operating noise of the hydraulic unit without (i) having a detrimental effect on functional characteristics of the unit, in particular on pressure build-up dynamics of the vehicle brake system, or without (ii) jeopardizing a compact construction of the hydraulic unit.

Abstract: An accumulator piston, in particular a piston for a pressure medium accumulator of a hydraulic unit of an electronically slip-controllable vehicle brake system, includes a cylindrical piston shaft, and a piston head covering the piston shaft. The piston head includes a circumferentially closed blind-hole-shaped recess having an opening. A cross section of the recess in a region of the opening has at least one smaller dimension than a cross section in a region of a base of the recess opposite the opening. The recess forms a mechanism configured to separate particles out from the pressure medium.

Abstract: A hydraulic assembly for modulating a brake pressure of a wheel brake of a motor vehicle brake system with electronic slip control includes a housing block through which a brake fluid is configured to flow and which is equipped with an electronically controllable member for setting the brake pressure. The hydraulic assembly also includes at least one particle-filtering device that is fitted with the housing block and forms a magnetic field. Using the particle-filtering device, particles of ferromagnetic material are configured to be filtered out of the brake fluid without reducing a cross-section of a fluid-conducting channel and thereby choking the throughflow of the housing block or hindering the fluid throughflow.

Abstract: A piston pump for a traction-controlled hydraulic vehicle braking system includes a pump piston and an annular piston that is arranged as a second piston in a resiliently loaded manner on the pump piston. As the delivery pressure increases, a resilient element is compressed and a stroke of the second piston is shortened so as to reduce a delivery quantity. This configuration enables a higher delivery pressure to be achieved for a given driving force. With low delivery pressure, the pump piston and the second piston deliver together so as to achieve a rapid build-up of pressure.

Abstract: In a throttle disk of a dynamic throttle of a hydraulic assembly of a vehicle brake system, with at least one disk surface which is formed by a rigid material, a layer of elastic material is at least partially formed on the disk surface.

Abstract: A pressure variation damper for a slip-regulated, hydraulic vehicle brake system includes a damper housing and a tubular damper element. The damper element is disposed in the damper housing and configured for elastic deformation. The damper element is subjected on an inside and/or on an outside to a fluid. Possible pressure variations of the fluid are to be damped. The damper element comprises a corrugation on the outside and a corrugation on the inside configured to reduce a chance in a wall thickness of the damper element owing to the corrugation on the outside.

Abstract: A guide ring for a piston pump of a vehicle brake system includes a body and a seal. The body is configured to movably support a piston of the piston pump in a cylinder liner. The seal is held on the guide ring and configured to inhibit passage of air between the piston and the guide ring during movement of the piston.

Abstract: A reciprocating pump, in particular a hydraulic pump of a slip-controlled vehicle braking system, includes a step piston, a differential pressure valve, and a pump outlet. The step piston includes a piston step that delimits a stepped space which is in communication with the pump outlet via the differential pressure valve. The piston step is configured such that the step space undergoes suction and displacement in a direction opposite to a displacement space, and in smaller quantities than suction and displacement in the displacement space, such that brake fluid volume flow in the pump outlet is evened out, and such that pressure pulsations are inhibited.

Abstract: An arrangement for throttling a fluid flow includes a throttle element arranged so as to influence a flow cross section in a fluid duct. The throttle element has a resiliently elastic disc-shaped basic body which is arranged with a top side and a bottom side between at least two supports in the fluid duct. The body is arranged in such a way that the flow cross section can be variably adjusted as a function of a pressure difference between the top side and the bottom side of the resiliently elastic disc-shaped basic body. At least one support bears against the top side of the resiliently elastic disc-shaped basic body, and at least one support bears against the bottom side of the resiliently elastic disc-shaped basic body.

Abstract: A piston pump for delivering fluids includes a piston, a cylinder element and a pressure chamber which is arranged between an inlet valve and an outlet valve and is closed by a cover, wherein a throttling mechanism for throttling the fluid flow is provided in the fluid flow downstream of the outlet valve, and a vehicle brake system has a piston pump of this type. The throttling mechanism includes a movable annular disc which is guided on the cylinder element and the internal diameter of which is adapted to the external diameter of the cylinder element, wherein the axial travel of the annular disc sets a variable first throttle cross section.

Abstract: A piston pump, in particular for a hydraulic assembly of an electronically controllable vehicle brake system, includes a cylinder element that has a pressure chamber with an outlet formed on the inside. The piston pump further includes an outlet-restricting element held on the outside of the cylinder element on a component by a first holder.

Abstract: A damping device includes a structure that defines an inlet and an outlet configured to supply pressure medium to the damping device, a first pressure chamber connected to the inlet and to the outlet, a second pressure chamber configured to receive a compressible medium, and a third pressure chamber having a pressure level. The damping device further includes a separating device and a pressure-medium connection. The separating device is positioned between the first pressure chamber and the second pressure chamber, and is configured to separate the third pressure chamber and the second pressure chamber and enable pressurization of the second pressure chamber with the pressure level of the third pressure chamber. The pressure-medium connection has an integral resistance and connects the first pressure chamber to the third pressure chamber.

Abstract: A piston pump for delivering fluids includes a cylinder, a piston that is movably mounted in the cylinder, and a pressure chamber that is arranged between an inlet valve and an outlet valve and that is closed off by a cover. The piston pump further includes a throttle element that is disposed in the fluid flow downstream of the outlet valve and that is configured to throttle the fluid flow. The throttle element is in the form of a resiliently elastic disk that is inserted into the cover. The cover further includes a mechanism configured to pre-center the throttle element.

Abstract: A hydraulic unit, in particular for a controllable-slip vehicle brake system, includes a housing block, a pump, a first fluid duct, and a second fluid duct. The housing block defines a pump receptacle that receives the pump, which has a suction side and a pressure side. The first duct crosses the pump receptacle in a region of the pressure side of the pump. The second duct leads into the pump receptacle in the region of the pressure side. The first and second ducts are sealed off from each over via a separation point. The hydraulic unit is configured to enable contact with a damping device configured to damp pulsations and reduce operating noise of the hydraulic unit without negatively impacting functional properties of the hydraulic unit, in particular on pressure build-up dynamics of the vehicle brake system, or without jeopardizing a compact construction of the hydraulic unit.

Abstract: A hydraulic unit includes a housing block, a pump receptacle formed on the housing block, and a pump element inserted into the pump receptacle. The pump element forms a separating point with the housing block. The separating point hydraulically separates low-pressure and high-pressure regions of the pump element. Known separating points are divided into sections. A first section forms a force closure between the housing block and pump element and a second section forms an axial stop where the pump element mechanically abuts the housing block. Pressure medium, under high pressure, from the high-pressure region can reach the section of the separating point forming the axial stop and cause corrosion. The section of the separating point forming the force closure faces the high-pressure region of the pump element to prevent access of pressurized pressure medium to the section of the separating point forming the axial stop and avoid corrosion.

Abstract: In a valve, in particular an outlet valve of a hydraulic piston pump for delivering a fluid, includes a valve seat and a valve closing body. A valve orifice is formed in the valve seat, and the valve closing body is arranged on the valve seat. The valve closing body is configured to selectively open and close the valve orifice, and the valve closing body includes a sealing bead which forms a sealing fit with the valve seat when the valve orifice is in the closed state.