Abstract: A double-diaphragm bladder. The bladder comprises a non-flexible diaphragm having a peripheral edge and a flexible diaphragm having a peripheral edge. The non-flexible diaphragm has an aperture adapted and constructed to be connected to a liquid port, and the peripheral edges of the non-flexible diaphragm and the flexible diaphragm are sealed together. The bladder is suitable for use in an expansion tank.

Abstract: A device and method is provided for the inline storage of water during pressurized use. The device provides a one-way valve associated with an incoming attachment point of a water tank assuring that water does not flow back through the incoming attachment point. The tank is constructed with two hemispherical caps at the ends connected by a tubular body providing structure when pressurized. The incoming attachment point is connected with the tank near the top preventing backpressure. An outgoing attachment point is connected with the tank as well.

Abstract: A pump liquid chamber (9) is formed inside a pump bellows (7). A suction port (18) and a discharge port (19) are formed in a wall face (4a) facing the liquid chamber (9). The suction port (18) communicates with a pump inflow passage (5), and the discharge port (19) communicates with a pump outflow passage (6). A suction check valve (20) is disposed in the suction port (18). An accumulator liquid chamber (31) is formed inside an accumulator bellows (29). An inflow port (23) and an outflow port (24) are formed in a wall face (28a) facing the liquid chamber (31). The inflow port (23) communicates with an accumulator inflow passage (33), and the outflow port (24) communicates with an accumulator outflow passage (34). The accumulator inflow passage (33) is connected to the downstream of the pump outflow passage (6). A discharge check valve (21) of the pump (P) is disposed in the accumulator inflow passage (33) in an accumulator body (25).

Abstract: The present invention relates to an arrangement in an energy-accumulating piston-cylinder device (1, 2) having a piston (2) and a cylindrical casing (1). The invention is characterized by an openable safety valve (1) arranged in the piston (2) and/or a discharge duct (11) together with an element (8; 17) arranged on the cylindrical casing (1) or the safety valve (10) and in the cylinder chamber, which element is designed, in the event of the piston (2) being inserted into the cylinder chamber by more than a predetermined distance, to act upon the safety valve/the discharge duct (10, 11) in order to expose the said duct (11), permitting a discharge of the pressure in the cylinder chamber.

Abstract: A fluid pressure system (S) includes a flexible diaphragm bladder (172) located inside a pressure tank (164) installed within a fluid system such as well (168). In preferred aspects, the bladder (172) can be inflated by the introduction of air and is located within a flexible confining tube (198) or confining element (298) for preventing over expansion of the bladder (172). The bladder (172) and the confining tube or element (198, 298) are free floating in and without physical connection with the pressure tank (164) in preferred forms. The pressure tank (164) includes a flexible side wall (196) to allow folding or willing of the assembled fluid pressure system (S) in preferred forms. Confining tube (198) in a preferred form is of a cylindrical configuration and arranged concentrically around the bladder (172). Confining element (298) is carried by the bladder (172) and creates a barrier extending along a chord of a cross section of pressure tank (164).

Abstract: An energy attenuation device for a conduit that is adapted to convey a pressurized fluid therethrough, comprising a hose section disposed about a portion of the conduit, wherein such conduit portion is provided with at least one aperture, for example in a surface thereof, and wherein in a non-pressurized state of the conduit, the hose section rests against the portion of the conduit over essentially the entire length of such portion.

Abstract: A device for damping pressure pulsations, in electronically regulatable vehicle brake systems for damping the pressure pulsations that are caused by pressure generators in a hydraulic circuit connected to it. The device has a housing which encloses a damping chamber and also has at least one hydraulic connection opening into the damping chamber, and a throttle device. The housing and throttle device are embodied as a compact damping unit that can be preassembled, is economical, and can be anchored in only a few work steps to the hydraulic block of an electronically regulatable vehicle brake system.

Abstract: A hydraulic accumulator includes an accumulator housing (1) formed of a non-magnetizable material and defining an axial direction of the housing. A separating element (9) can be axially displaced in the accumulator housing (1) and separates two working chambers (5, 7) from each other in the accumulator housing (1). A field-generating magnetic configuration (29) is arranged on the separating element. A series of magnetic field sensors (35) are arranged on the outer side of the accumulator housing (1), extend along the path of the axial movement of the separating element (9) and react to the field of the magnetic configuration (29) on the separating element (9) to characterize its position along the series of magnetic field sensors (35).

Abstract: A non-metallic, diaphragm-type tank assembly for use with a pressurized water system is disclosed. The tank assembly comprising a non-metallic outer body; a non-metallic inner shell assembly, including an upper portion and a lower portion, that is contained by the non-metallic outer body; and a diaphragm that is structured and arranged about the upper and lower portions of the inner shell assembly to separate said inner shell assembly into a water portion and a pressurized gas portion. Preferably, the diaphragm comprises a resilient, non-porous material and includes a bead portion comprising an annular ring that is convex on an inner side and concave on an outer side at its outer periphery. More preferably, the bead portion is removably secured to the overlapable end portion of the lower portion of the inner shell assembly by a clamping system that comprises an inner clamp hoop and an outer band.

Abstract: An internal pulse damper for use in a fuel rail for an internal combustion engine. The damper is formed from a length of tubular metal stock having a flat oval cross-section and ends flattened by crimping to form a captive-air pillow. The end crimps are improved through use of tooling to eliminate a creased sidewall area vulnerable to stress failure in prior art pulse dampers. Such tooling includes constraints to prevent the tubing sides from flaring out and forming a longitudinal crease adjacent the end crimp during squeezing-shut of the tube end.

Abstract: The invention relates to a fluid power accumulator in which the fluid undergoes a state change as the system is pressurized to store energy. A state change can be a phase change, a chemical reaction, or a combination of these. Generally the state change results from the interaction of a compressible fluid contained in the accumulator with another substance, which can be a fluid or a solid. Preferably, the state change includes the physical adsorption of a fluid by a solid adsorbant. The invention can improve the energy storage density of a fluid power accumulator, allow a given energy storage density to be achieved at a lower maximum pressure, facilitate heat transfer and storage within an accumulator, and/or improve accumulator efficiency by storing energy in a form other than thermal energy, such as in the form of chemical energy.

Abstract: A hydraulic circuit includes an accumulator having an inflow passage which introduces a hydraulic fluid which is discharged from a hydraulic pump into a hydraulic fluid chamber and a discharge passage which discharges the hydraulic fluid from the hydraulic fluid chamber to a hydraulic actuator. The hydraulic circuit includes a valve mechanism which restricts the supply of hydraulic fluid from the hydraulic fluid chamber to the hydraulic actuator when the pressure in the hydraulic fluid chamber is less than a set pressure and which releases the restriction of the supply of hydraulic fluid to the hydraulic actuator when the pressure in the hydraulic fluid chamber is at least the set pressure. The valve mechanism may be installed inside the accumulator.

Abstract: A fuel rail assembly with crossover conduits for communicating fuel between two fuel rails of a fuel-injected, spark ignited internal combustion engine is provided. The hose has a body with a mechanism for damping pressure pulsations within the fuel rail assembly.

Abstract: A sanitary fitting (1) formed from a multi-wall housing (2) which can be inserted into a sanitary water pipe is provided that has at least two adjacent walls (6,7) surrounding an inner region (8). The fitting includes a checj valve , and one wall of the housing (2) is a tubular wall (7) formed of a flexible and/or elastic material. In order to relieve pressure when the check valve is closed and the fluid volume is sealed in on the outflow side, the housing wall (7) can be moved towards the adjacent housing wall (6), compressing the at least one inner region (8), or can be spaced apart from the adjacent housing wall (6) or moved away from same, enlarging the at least one inner region (8).

Abstract: In a water-hammer preventing unit for a check valve according to the present invention, a retainer pipe having openings at two edges thereof is provided inside a short pipe to form a circular space with the short pipe, and openings are formed on this retainer pipe. Further an elastic tube is provided on an external peripheral surface of the retainer pipe and covers the openings, and a communication path is formed between the short pipe and the valve body holder, and the communication path communicates the circular space to the flow path in the upstream side of the valve body and, when a fluid flows in the reverse direction, a portion of the fluid is accommodated from the opening into the circular space by expanding the elastic tube toward the circular space, and also flows a portion of the fluid in the said circular space to the flow path in the upstream side from the valve body.

Abstract: A vibration damping bellows with a high vibration absorbing effect and whose a simple structure. In a vibration damping coupling, for example, the vibration damping bellows is formed by interposing viscoelastic material, material with low elasticity, or combination thereof between an inner member and an outer member, which are made of stainless steel. The stainless steel inner member and/or outer member may be omitted when occasion demands. The material of the stainless steel plate, for example, may be SUS 304 that is austenitic stainless steel. Further, flanges to perform connection with pipes may be provided in both ends of the bellows. The viscoelastic material may comprise elastomer such as silicone rubber and vibration damping alloy.

Abstract: A hydraulic accumulator includes a rigid tank containing a flexible but non-elastic bladder formed of a metal foil and separating the interior of the tank into a gas space and a liquid space. The gas and liquid spaces respectively communicate with exterior sources of gas and liquid through fixtures provided on the accumulator tank. One of the fixtures is provided with an anti-extrusion valve to prevent the bladder from being forced out through the fixture. In one preferred embodiment the bladder is a bellows. In another preferred embodiment the accumulator tank is provided with a vent in communication with the liquid space within the tank to allow for venting of any gas separating from the liquid and accumulating within the liquid space.

Abstract: Method and apparatus for eliminating turbulence-induced noise in a pulsation-absorbing flexible hose, as in a hydraulic power steering system containing a pressure fluid-feeding pump and a steering gear operated by the pressure fluid discharged from the pump. The hose has a restrictor positioned in the hose bore, and the restrictor has a flow-through bore of smaller diameter than that of the adjacent wall of the hose bore. The flow-through bore has a venturi tube cross section. The restrictor venturi inlet, throat and outlet are designed so as to efficiently conduct fluid therethrough by matching the characteristics of the fluid, the operational pressures, fluid density and other system parameters such that the venturi operates below the lower critical value of the Reynolds number of fluid flow through the restrictor to thereby minimize or eliminate fluid turbulence in the restrictor outlet and/or immediately downstream thereof.

Abstract: An expansion tank (1) which is intended to be connected to a pipe system which is filled or is to be filled with liquid, comprises a substantially closed tank (2) having at least a first connection opening (6) for connection to a liquid pipe, a second connection opening for connection to a source of pressurized gas (14), and an element (8) which can move inside the tank and is designed to move with the interface (11) between liquid (9) and gas (10) in the tank. The tank is provided, at the location of the second connection opening, with a valve assembly (7) which can open and close the second connection opening and can be actuated by the movable element (8) in the tank.

Abstract: An in-line expansion tank. As fluid traverses a pipe within the tank, it may pass into and displace a diaphragm disposed outside of the pipe if the fluid pressure is greater than a tank pressure pushing the diaphragm against the pipe. When the fluid pressure decreases, the fluid passes from the diaphragm back into the pipe.

Abstract: A lightweight, low permeation, piston-in-sleeve high pressure accumulator is provided. The accumulator includes a cylindrical composite pressure vessel with two integral rounded ends. A piston slidably disposed in a thin nonpermeable internal sleeve in the accumulator separates two chambers, one adapted for containing a working fluid and the other adapted for containing gas under pressure. Working fluid is provided in a volume between the nonpermeable internal sleeve and the composite pressure vessel wall. Further means are provided for withstanding harmful effects of radial flexing of the composite vessel wall under high pressures, and from stresses present in use in mobile applications such as with a hydraulic power system for a hydraulic hybrid motor vehicle. A method for pre-charging the device is also presented.

Abstract: A compensation device for compensating a volumetric expansion of a medium during freezing has a receptacle provided in a structural component. The medium is contained in the receptacle. A sealing element is provided that delimits the receptacle. The sealing element is prestressed by a prestressing force provided by a pressure spring against the operating pressure of the medium.

Abstract: A hydraulic accumulator, particularly a piston-type accumulator, includes an accumulator housing (1) which defines a longitudinal axis (9), is provided with an opening that is concentric with the longitudinal axis (9) and is closed by means of a lid (11). The lid is secured in a form-fitting manner against axial forces by a wall portion (25) of the accumulator housing (1). The housing encompasses the lid and is radially deformed towards the inside. The hydraulic accumulator also includes at least one part (39) that is deformed perpendicular to the longitudinal axis (9) secure the lid (11) in a form-fitting manner against being twisted relative to the longitudinal axis (9).

Abstract: A line arrangement is provided for transmitting volume flows of fluids with a port which is assigned to a pump, a port which is assigned to an actuator and a connecting line which connects the pump to the actuator. An amplified damping effect of pulsations occurring in the line arrangement is achieved in that at least one line through which there is not a flow and which is composed at least partially of an elastic hose should branch off from the connecting line. At least one inner hose oriented axially with respect to the elastic hose is provided which has at least one free end opening axially to an axial space of the elastic hose.

Abstract: This invention relates to a fluid accumulator comprising a wall (2) encompassing a reservoir (1) for receiving the fluid, part of the wall being elastically deformable. The wall (2) of the fluid accumulator comprises a first wall portion (2A) that is made of a first elastically deformable composite, with fibrous reinforcement material applied in a first density, and a second wall portion (2B) that is made of a second composite with fibrous reinforcement material applied in a second density and an elastic deformability that is the same as or different from the elastic deformability of the first wall portion, the density of the fibrous reinfrocement material in the first and second wall portion (2A, 2B) being different.

Abstract: Perforated pulsation dampening devices of this invention comprise a housing having a structural wall section with opposed ends defining an internal chamber. The housing is characterized by a plurality of openings disposed therethrough. A compressible member is disposed within the internal chamber and positioned to be contacted by fluid passed from an outside surface of the housing through at least one of the openings. The compressible member is configured to absorb a known fluid flow variation or pressure pulsation in the fluid contacting the compressible member to attenuate the same. If desired, a sleeve can be interposed between an inside surface of the internal chamber and an outside surface of the compressible member.

Abstract: An energy attenuation device for a fluid-conveying line, and a method for attenuating energy in such a line, are provided. The device includes one or more hose sections disposed in the fluid-conveying line, and at least one spring disposed in at least a portion of each of the hose sections.

Abstract: A pulsation damper which is used for damping pressure variations in an oscillating positive-displacement pump connected thereto is provided. The pulsation damper includes an inlet connection element, an outlet connection element and a line connecting the elements whereby these three components are connected to at least two damper chambers inside the pulsation damper, the damper chambers being connected in series inside the damper housing. One section of the line connected to the inlet connection element includes a connection channel to a first damper chamber and is joined to a second damper chamber via an inlet throttle element. The second damping chamber is connected to the outlet connection element via an outlet throttle. Damper elements made of an elastic material are disposed within the damper chambers.

Abstract: The positive air pressure attenuation device (1) for use in drainage systems in buildings includes a housing (3), connected to the system, to which a flexible reservoir (10) is secured, the flexible reservoir (10) being operable on a positive air pressure transient within the drainage system, wherein both the housing (3) and the flexible reservoir (10) are contained within an external casing (2).

Abstract: Disclosed is a damping device to be incorporated into fluid systems, particularly hydraulic systems, said damping device comprising an expansion hose. An essentially rigid damper which is oriented counter to the direction of flow, is disposed inside the internal space of said expansion hose. The damper pipe is provided with a completely closed wall, resulting in a good damping effect. Preferably, the damper pipe is significantly less flexible in the radial direction than the outer expansion pipe, whereby the damping effect is substantially enhanced.

Abstract: Some embodiments of the present invention provide an accumulator tank assembly and method in which a flexible bladder is received within an accumulator tank. The accumulator tank and the flexible bladder can each have an inlet aperture through which fluid is received within the accumulator tank assembly and an outlet aperture through which fluid exits the accumulator tank assembly. In some embodiments, inlet and outlet flanges positioned adjacent the inlet and outlet apertures of the accumulator tank are used to couple the flexible bladder to internal or external surfaces of the accumulator tank, thereby creating fluid tight seals between the flexible bladder and the accumulator tank.

Abstract: A fluid pressure system (S) includes a flexible diaphragm bladder (172) located inside a pressure tank (164) installed within a fluid system such as well (168). In preferred aspects, the bladder (172) can be inflated by the introduction of air and is located within a flexible confining tube (198) for preventing over expansion of the bladder (172) and in the preferred form being of a cylindrical configuration and arranged concentrically around the bladder (172). The bladder (172) and the confining tube (198) are free floating in and without physical connection with the pressure tank (164) in preferred forms. The pressure tank (164) includes a flexible side wall (196) to allow folding or willing of the assembled fluid pressure system (S) in preferred forms.

Abstract: A metal bellows hydraulic accumulator includes a bellows unit having a metal bellows portion and disposed within a pressure space of a pressure vessel, whereby the pressure space is sectioned into a gas chamber and a liquid chamber communicating with a liquid passage. The liquid chamber is sectioned into a first liquid chamber to which the bellows portion of the bellows unit is exposed, and a second liquid chamber to which the liquid passage is opened. An open-close valve is provided so as to establish and break communication between the first and second liquid chambers. A filter for separating foreign matter contained in operating liquid flowing toward the liquid passage, and a foreign-matter storing section capable of storing the foreign matter are provided in the second liquid chamber.

Abstract: A noise-attenuating fluid transfer conduit, in particular for a pilot-controlled power steering system of a motor vehicle, the conduit being mounted in a high pressure circuit for connecting an electrically-driven pump to a controlled member which is fed with pressurized fluid from said pump, said conduit being made up of alternating segments of rigid tube and segments of flexible hose, and at least one noise attenuator housed inside the conduit, wherein the flexible hose segments of the conduit are of a length which is determined as a function of as short as possible a response time associated with their volume expanding when the electrically-driven pump is set into operation.

Abstract: A hydroaccumulator, in particular a bladder accumulator, includes a pressurized container (1) and a separation element (5) located in the container to separate a gas chamber (7) lying adjacent to an inlet on the gas side from a fluid chamber (9) lying adjacent to an inlet on the fluid side inlet (3), having a fluid connecting sleeve (11) and a valve arrangement located in the connecting sleeve (11). The valve body (17) has a transversal bore (33). The valve body is pretensioned in an open position which allows the passage of fluid and can be displaced into a closed position by a displacement of the separation element (5). The interior surface (15) of the connecting sleeve (11) lies directly against the valve body (17) and guides the displacement of the body between the open and closed positions. The side of the valve body (17?) that faces the separation element (5) is configured as a planar plate extending partially into the fluid chamber (9).

Abstract: A hydraulic fluid reservoir (10, 10?, 10?, 10??) comprises a body 12, 12?, 12? 12??) defining a variable volume chamber having one end portion movable with the level of fluid in the chamber. A biasing member (18, 18?, 18?, 18??) acting on a traction rod (16, 16?, 16?, 16??) extending from the movable end portion restrains movement thereof under fluid pressure. The fluid pressure in the variable volume chamber advantageously counterbalances the force of reaction in the biasing member (18, 18?, 18?, 18??).

Abstract: A hydraulic accumulator of the liquid-gas type, comprising a housing (11) defining a chamber (11C), a gas port (30) and a liquid port (19). A gas charging valve (31) is disposed in the gas port (30) to control admission of high pressure gas. A semi-permeable separator (35) is disposed within the housing (11) to separate the internal chamber (11C) into a gas chamber (33) in communication with the gas port (30), and a liquid chamber (21) in communication with the liquid port. A means (41) is within the liquid chamber for collecting gas which passes from the gas chamber (33), through the semi-permeable separator, and into the liquid chamber. Included is a conduit (45) having one end (45a) in communication with the gas collecting means (41), and another end (45b) operably associated with the housing (11,27) to communicate gas from the collecting means (41) out of the liquid chamber.

Abstract: A hydraulic accumulator A to be removably attached to a support member includes a liquid chamber R2b having a predetermined volume even when no pressurized operating liquid is accumulated, and communicating with a liquid inflow port Pi and a liquid outflow port Po, which are disposed below the liquid chamber R2b. A liquid-chamber-R2b-side end of an outflow passageway So connecting the liquid chamber R2b and the liquid outflow port Po opens to an upper portion of the liquid chamber R2b. Further, an inflow passageway Si connecting the liquid chamber R2b and the liquid inflow port Pi is coaxially disposed within the outflow passageway So, and a liquid-chamber-R2b-side end of the inflow passageway Si opens to the upper portion of the liquid chamber R2b.

Abstract: A hydraulic pulsation damper system for installation into an otherwise rigid hydraulic system to absorb and extinguish pressure pulsations being transmitted through the system by hydraulic fluid contained therein. The system is useful in suppressing pulsations in automotive fuel lines supplying fuel to fuel injection systems. The system includes fuel-conducting tubing made of flexible, non-permeable material that includes a convoluted central portion capable of expanding and contracting in response to pulsations in the fuel. Resilient foam is molded around the convoluted portion for controlling expansion of the convolutions. The foam and convoluted tubing are contained within a housing made from a larger-diameter hose having ends sealed as by swaged connectors. The damper system may be bent to accommodate installation with a fuel line in an engine and can conveniently provide a sound-deadening link in the fuel line of a vehicle between a body-mounted portion and an engine-mounted portion thereof.

Abstract: A fuel rail is provided for delivering fuel to a plurality of fuel injectors for a reciprocating piston internal combustion engine which in a preferred embodiment includes a sealed housing having an inlet for receiving fuel, the housing having at least first and second outlets for delivering fuel to fuel injectors, a first chamber forming a first control volume with an inlet connected with an interior of the sealed housing, the first chamber forming a vapor space for the sealed housing interior, and a second chamber forming a second control volume with an inlet to the first control volume, the second chamber forming a vapor space for the first control volume.

Abstract: A coupling system, comprising: a first bellows element; a fluid handling component; and a coupling assembly releasably connecting the first bellows element to the fluid handling component for maintaining a secure connection between the first bellows element and the fluid handling component. The coupling assembly comprises a first flange attached to the first bellows element and a second flange attached to the fluid handling component, the first and second flanges alignable with each other to form a locking space; a locking member sized to fill the locking space; and a sealing structure positioned between the first bellows element and the fluid handling component to form a seal proximate the effective diameter of the first bellows element. A kit and a method for connecting a bellows element to a fluid handling component are also disclosed.

Abstract: The invention relates to a fuel system having pressure pulsation damping. The invention specifically locates restrictors in relation to identified critical elements of the system to control the maximum operating system pulse magnitude, as well as dampening the overall pulsations of the system.

Abstract: A storage device for a liquid medium has a housing having an interior provided with at least one partitioning element dividing the interior into a first chamber for receiving the liquid medium and into a second chamber filled at least partially with a gas under pressure. The gas keeps the liquid medium in the first chamber under pressure. The at least one partitioning element is formed at least partially of an expandable bellows fastened pressure-tightly to a lid of the housing.

Abstract: A pressure tank having a reinforced stainless steel connector that can bear heavy weight and the stainless steel connector makes the pressure tank well water-tightened. The pressure tank mainly contains: an upper chamber, an inner chamber, a sealing washer, a stainless steel connector, a leakproof ring, an elastic diaphragm, a stainless steel ring washer and a lower chamber. The upper chamber has a hole on top thereof. The upper chamber encloses the inner chamber. The inner chamber has an inward protrusion on top thereof. The inward protrusion has a through hole aligned with the hole of the upper chamber and a recession around the through thereof. The sealing washer is installed between the upper chamber and the inner chamber. The sealing washer has a through hole aligned with the through hole of the inner chamber. The stainless steel connector is engaged through the hole of the upper chamber, the through hole of the sealing washer, and the through hole of the inner chamber in order.

Abstract: A hydraulic accumulator includes an accumulator housing (1) and a diaphragm (3) forming a displaceable partition element in the housing between a gas chamber (7) and a liquid chamber (5). The membrane has several annular regions (31, 33, 35, 37, 39), interconnected by annular weak points (61, 63, 65, 67, 69, 71). The annular regions (31, 33, 35, 37, 39), have protuberances (81, 83, 85, 87, 89) on the interior face of the membrane (3) facing away from the wall of the accumulator housing (1). The protuberances are at their thickest in the central region between adjacent weak points, thus increasing the wall thickness of the membrane (3), and are at least partially convex (91,93), tapering off to a respective flat form towards the weak points.

Abstract: A fuel pressure pulse damper includes metallic damper body defining a chamber in which a flexible diaphragm is received in a manner to dampen fuel pressure pulses between a fuel pump and fuel injectors of a vehicle fuel system. The damper body includes a barbed fitting to receive fuel form the fuel pump and quick connect fitting for connection to a fuel rail for supplying pressurized fuel to fuel injectors of the vehicle engine.

Abstract: An accumulator with a bellows dividing the accumulator into a pressure sealing chamber and a fluid flow-in chamber. A fluid inlet introduces fluid into the flow-in chamber. A bellows cap is attached to a movable end of the bellows and contains a throttling mechanism and chamber room for dampening sounds generated by pulsating waves. The throttling mechanism is positioned to oppose the fluid inlet.

Abstract: A fuel delivery rail assembly for supplying fuel to a plurality of fuel injectors in an engine includes an elongated conduit having a longitudinal fuel passage therein, a fuel inlet pipe, and a plurality of sockets. One wall of the conduit opposite to the socket mounting wall includes a flat or arcuate flexible absorbing surface. A high-frequency noise suppressing component such as a rib, a cavity or a clamp is applied to the one wall opposite to the absorbing surface. Thus, fuel pressure pulsations and shock waves are reduced by bending the absorbing surface, and emission of high-frequency noise is eliminated.

Abstract: A pressure-stable cylinder comprises a cover having a dome shape groove and a through hole; an inner wall of the dome shape groove having threads; a cylinder having an opening and an opening section around the opening having a threaded tapered shape matching to the dome shape groove of the cover; the opening section of the cylinder being formed with a plurality of first washers; one end of the opening section having a coupling groove and a second washer; a bellow coupled to the second washer; a disk placed below the bellow; and a compressible spring placed between the disk and a bottom of the cylinder; the compressible spring resisting against the disk so that the cylinder has a predetermined pressure. In assembly, the washer and the bellow are steadily fixed to the coupling groove of the cylinder. The washers have an effect of draining-proof and air-tightness.

Abstract: A hydraulic accumulator, especially a bladder accumulator, includes an accumulator housing (10), and a separation element disposed in and separating the accumulator housing interior into a gas chamber (16) adjoining an inlet (14) on the gas side from a fluid chamber (18) adjoining an inlet (20) on the fluid side. The inlet on the fluid side has a fluid connecting neck (22) having a valve support (40) disposed in the neck. The valve support has fluid openings (42), and a disk-shaped valve body (32) that tapers towards the valve shaft (46) on its side facing the valve support (40). The valve shaft can be pretensioned via a force accumulator (62) into the open position releasing the fluid opening, can be displaced into its closed position by a displacement of the separation element (12), and projects into the fluid chamber (18) in the open position.