Abstract: In general, the subject matter described in this disclosure can be embodied in a fuel injector that includes an upper housing portion that defines an inlet passage adapted to receive fuel, and a lower housing portion that is attached to the upper housing portion and that defines an injector outlet adapted to dispense fuel. The fuel injector includes an electromagnetic coil assembly that is user removable while the upper housing portion remains attached to the lower housing portion. The fuel injector includes a movable pintle that is biased to a closed position that is adapted to prevent fuel from flowing through the injector outlet, and movable, responsive to magnetic force produced by energizing the electromagnetic coil assembly, to an open position that is adapted to permit fuel to flow through the injector outlet.

Abstract: An anti-reflection device for preventing the reflection of pressure waves inside a fuel injection valve. The anti-reflection device includes an essentially cylindrical base body with a first base side, a second base side, and an outer surface. The anti-reflection device also includes a longitudinal axis orientated parallel to a propagation direction of a pressure wave. The longitudinal axis penetrating the first base side and the second base side. The anti-reflection device also includes a flow path for fuel formed between the first base side and the second base side. The flow path forming a curve around the longitudinal axis.

Abstract: A controllable one-way clutch assembly having an electromagnetic actuator module equipped with an energizeable coil assembly, a strut moveable in response to energization of the coil assembly from a released position to a locked position, and a latching mechanism operable to releaseably hold the strut in the released position when the coil assembly is not energized.

Abstract: A sealing assembly for controlling a flow of fluid through a fluid line has a housing having a first end opposite a second end with a hollow interior extending therebetween and an elastically resilient plug disposed within the hollow interior of the housing. The plug has a body engagable with a seat within the housing and a tension member having a first end connected to the body and a second end connected to the housing. The tension member is pre-loaded in tension to urge the body of the plug against the seat to seal the hollow interior of the housing. The body is movable away from the seat when the plug is acted upon by a fluid pressure greater than a pre-load force of the tension member.

Abstract: An injector includes a needle and a body. The needle is configured to receive fluid from a fluid supply and operable between a first position, in which the fluid is not provided to a target, and a second position, in which the fluid is provided to the target. The needle includes a first needle bore, a second needle bore, and a first connector. The first needle bore is configured to receive fluid from the fluid supply. The second needle bore is aligned with the first needle bore and configured to provide fluid to the fluid supply. The first connector is in fluid communication with the second needle bore. The body includes an end, a first body bore, and a second body bore. The first body bore is configured to receive the needle. The second body bore is positioned to be contiguous with the end.

Abstract: An improved fuel injection device for internal combustion engines comprising a slidable (pilot) valve instead of a needle valve principle. The valve does not comprise a seat, so, even in the case of a spring-loaded embodiment of the valve there is no risk of hammering of the valve on a seat with the pertaining generation of noise. The improved fuel injector allows a larger nozzle diameter and, therefore, a larger number of nozzle holes, if required or deemed useful. For rotating embodiments of the fuel injector, the valve or at least its spring, in the case of a spring-loaded embodiment of the valve, can be located in the static section of the rotating fuel injector, thus eliminating the balancing problem of prior art rotating fuel injectors which comprise a spring in the rotating section.

Abstract: A nozzle assembly of a fuel injector includes a nozzle body in which a needle member is adapted to translate. The nozzle assembly is further provided with an electrical circuit so that an electrical signal enabling contact detection is measurable between the needle member and the nozzle body. The nozzle assembly also includes a piezoresistive device which continuously varies the electrical signal during the final closing displacements, or the initial opening displacements, of the needle, the variations of the signal being a function of a differential pressure.

Abstract: The present disclosure generally relates to nozzles for a valve and, more specifically, to a fuel injection valve for a combustion engine. In some embodiments, a nozzle assembly for a fuel injection valve for a combustion engine may include: a valve body with a central longitudinal axis; a valve cavity within the valve body; a nozzle tip body comprising a protrusion limiting a free volume of the valve cavity; and at least one nozzle aperture out from the valve cavity through the protrusion. The protrusion may extend from an end surface of the nozzle tip body in an extending direction parallel to a longitudinal axis of the nozzle tip body away from the valve cavity and comprise a first section adjacent to the end surface, the first section having a cylindrical outer surface, and a second section adjacent to the first section, the second section having an outer surface of decreasing diameter in the course away from the end surface along the extending direction.

Abstract: A valve for controlling a fluid, e.g., fuel, has a closing element and a valve seat. The valve seat has a sealing region and a valve seat region adjoining the sealing region. The closing element seals on the sealing region, the sealing region and the valve seat region merging with one another directly and without a step. A hardness of the sealing region is less than a hardness of the closing element.

Abstract: Methods and systems are provided for direct fuel injection, wherein a fuel injector comprises an injector needle coupled to a frustum shaped nozzle. During a fuel injection event, the injector needle may be moved outward to create an annulus nozzle. In this way, the fuel injector may inject fuel with a cone shaped spray pattern, reducing the spray penetration of the injected fuel.

Abstract: A housing selectively encloses a nozzle. The housing has a body that partially defines an interior space in which the nozzle is configured to be disposed. The housing also includes a cover assembly that selectively blocks a first aperture of the body and further defines the interior space. Additionally, the housing has a piston that is disposed in the interior space and secured to the nozzle. The piston defines a gas inlet, a liquid inlet, and an outlet fluidly connected to both the gas inlet and the liquid inlet. The housing further includes a biasing member attached to the piston. The biasing member is configured to exert a biasing force that biases the nozzle to a retracted position. The biasing member is further configured such that when pressurized gas flows through the body, the biasing force is overcome such that the nozzle is disposed in an extended position.

Abstract: A gas injector for the direct injection of gaseous fuel into a combustion chamber of an internal combustion engine, including a valve seat, a valve needle, which in response to a lift releases a first cross-sectional area at the valve seat, and a gas control region, which is situated at the valve needle and defines a second cross-sectional area together with a component surrounding the valve needle, and in response to a lift, a change in the first cross-sectional area at the valve seat differs from a change in the second cross-sectional area at the gas control region.

Abstract: A port injection system for gaseous fuels may include an injector body defining a hydraulic fluid inlet chamber, a hydraulic fluid exit passageway, a hydraulic fluid actuation passageway, a check valve inlet passageway fluidly connected with the hydraulic fluid actuation passageway, a valve chamber, and a gaseous fuel inlet chamber. An electrical solenoid actuator may be mounted to the injector body, with the electrical solenoid actuator including a movable armature, and a poppet valve connected to the movable armature and disposed within the valve chamber. The poppet valve may be movable between a pressurized hydraulic fluid flow blocking position and a pressurized hydraulic fluid flow passing position. A check valve may be disposed within the check valve inlet passageway.

Abstract: A gas injector for the direct injection of gaseous fuel into a combustion chamber of an internal combustion engine, which includes a valve seat, a valve needle having a sealing region, the valve needle releasing a first cross-sectional area at the valve seat in response to a lift, a component surrounding the valve needle, and a gas control region, which is situated directly next to the sealing region, the gas control region providing a constant cross-sectional area between the valve needle and the component surrounding the valve needle across a lift length from a first lift position to a second lift position.

Abstract: A water seat is provided for use in a fire suppression sprinkler. The water seat is movable between an inactive position and an active position. The water seat includes a generally polygonal guiding surface in limited contact with the sprinkler. The water seat is slidable relative to the sprinkler when corrosion residue is present within the sprinkler. A sealing surface is positioned adjacent the polygonal guiding surface and forms a line contact seal at an interface with the sprinkler when the water seat is in an active position. The water seat also includes a guiding portion adjacent the sealing surface and opposite the polygonal guiding surface. The combination of the guiding surface and the guiding portion maintain a generally parallel orientation of the water seat relative to the sprinkler when the water seat moves from an inactive position to an active position.

Abstract: A fuel injector includes first and second check valve members that open and close first and second nozzle outlet sets, respectively, to inject two fuels that differ in at least one of chemical identity, pressure and molecular state. The first check valve member defines a through passage, includes a closing hydraulic surface exposed to fluid pressure in the first control chamber, and moves into and out of contact with a first seat on an injector body. The second check valve member includes a closing hydraulic surface exposed to fluid pressure in a second control chamber, and moves into and out of contact with a second seat located on the first check valve member. A control valve member is movable between first and second positions that respectively block and allow fluid communication between the first and second control chambers and a drain outlet.

Abstract: A dosing valve for administering a reducing agent into an exhaust stream within an exhaust manifold of an internal combustion engine. The dosing valve includes a valve needle internally coaxial to a valve body and held in a closed position by a force of compressed spring acting axially and held in relation to the valve needle and valve body. The negative impact of varnish and dehydrogenated compounds, or coking products, of hydrocarbon based reducing agents, is substantially reduced or eliminated. Additionally, this includes decreased sensitivity to the negative impact of the precipitates and crystals that come out of the solution due to temperature change with urea-based reducing agents.

Abstract: A method and a device for setting an idle stroke of an actuating drive of an injection valve with respect to an actuating element actuated by the actuating drive. The actuating drive is arranged in an injector body and the actuating element is arranged in an actuating-element housing such that it is movable in an axial. An axial stressing force is applied to the injector body and the actuating-element housing such that part of the injector body or actuating-element housing arranged in a force flow path defined the axial stressing force is deformed permanently, until a value of a representative electric variable determined directly or indirectly for the idle stroke of the actuating drive lies in a predefined value range. Further, an injector assembly for an injection valve may include an injector body and/or an actuating-element housing having a contact section elevated in the axial direction.

Abstract: A valve for injecting fuel includes a valve carrier having a valve seat and an inflow orifice, a valve positioning member, and a flow limiting element that is disposed on the valve positioning member. The inflow orifice includes a step having a peripheral annular edge, and the flow limiting element is disposed on the valve positioning member in such a way that when the valve is opened, a flow area between the annular edge and the flow limiting element is reduced from a first flow area to a second flow area.

Abstract: A direct-injection engine having a cylinder in which a combustion chamber is jointly formed by a piston crown of a piston, which is movable along the longitudinal axis of the cylinder, and a cylinder head, and an injection nozzle, which is arranged in the cylinder head on the opposite side of the piston crown eccentrically, spaced apart from the longitudinal axis of the cylinder, for the direct injection of fuel, which injection nozzle has a nozzle needle movable in a nozzle body, wherein the needle in the open position of the nozzle is moved into the combustion chamber, opening up an annular gap arranged between the nozzle body and needle.

Abstract: A fuel injection device and associated method are provided. An injector body defines an axial bore and has a nozzle exit extending into the combustion chamber. The injector body receives fuel within the bore and channels the fuel through the nozzle exit into the combustion chamber. A flow rate control member is movably disposed within the injector body bore and is actuatable by a first actuator to move with respect to and to interact with the nozzle exit to control a flow rate of the channeled fuel. A pintle member is movably disposed within a flow rate control member bore and is actuatable by a second actuator, independently of the flow rate control member, to move with respect to the flow rate control member and to interact with the nozzle exit to control a spray angle of the channeled fuel. The flow rate and spray angle are thereby independently controllable.

Abstract: A fuel injector may include a housing, a poppet valve assembly, and an actuation assembly. The housing may define a longitudinal bore, a high pressure fuel duct in communication with the longitudinal bore and a valve seat including a valve seat surface and an aperture. The poppet valve assembly may include a stem and a valve head, be disposed within the longitudinal bore and be variably displaceable between a first position and a second position. In the first position, the valve head may abut the valve seat to seal the aperture. In the second position, the valve head may be displaced from the valve seat to open the aperture. The actuation assembly may operate to move the poppet valve assembly between the first position and the second position. The high pressure fuel duct may carry pressurized fuel that biases the poppet valve assembly to be in the first position.

Abstract: The fuel injector provides an oncoming flow out of spray-discharge orifices in a manner that reduces variance in the spray and flow-through characteristics variables. The fuel injector includes at least one excitable actuator and a valve element that is movable along a longitudinal valve axis, which collaborates in a sealing manner with a valve seat. Upstream of the valve seat, circumferentially a plurality of flow-through regions are provided, between which there are guidance regions for the valve element. The spray-discharge orifices downstream from the valve seats, whose number differs from the number of the flow-through regions, discharge the fuel finely atomized. At least two flow-through regions differ in size, such as circumferential width and/or radial depth, and/or contour. The fuel injector directly injects fuel into a combustion chamber of an engine using compression of a fuel/air mixture and spark ignition.

Abstract: A self-cleaning nozzle assembly adapted for use in processing pressurized liquids, slurries, etc., which may carry with it particulate matter. A spacing between two nozzle members forms an orifice, and the size of the orifice is adjustable. The nozzle members are spring biased together to reduce the size of the nozzle orifice, but pressurized liquids processed by the nozzle counteract the spring bias force to increase the size of the nozzle orifice. When the force of the spring bias and the force of the pressurized liquid are at equilibrium, the size of the nozzle orifice is maintained. When adjusting the compression force of the spring on the nozzle members, the upstream pressure of the liquid can be adjusted accordingly. In flash evaporation systems, the nozzle can be employed to control the flash point of the liquid by controlling the pressure thereof.

Abstract: An injector for a fluid is provided, in particular for fuel, which has a valve housing, an intake nipple for the fluid disposed at one housing end, a nozzle body disposed at the other housing end, which has a valve seat surrounding a spray-discharge orifice, and a valve chamber disposed upstream therefrom, and a fluid-carrying pipe which extends in the valve housing and connects the valve chamber to the intake nipple. To achieve a connection of the fluid-carrying pipe to the valve chamber that is impervious to high operating pressures and is suitable in terms of production and convenient in terms of assembly, an axial blind hole which has an internal thread and is disposed at a radial offset to the housing axis of the valve housing, is formed in the nozzle body, and a fluid connection us established from the blind hole to the valve chamber.

Abstract: A direct injection injector for an engine includes a body forming the outer structure and having a space therein, a needle inserted to slide linearly in the body and having a hole therein forming a fuel channel, and a cylinder nozzle fitted on needle to communicate with hole and having a nozzle hole for injecting fuel, such that it is possible to prevent caulking in which the nozzle of the injector is clogged with soot while injecting fuel at relatively low pressure, change the spray type of the injected engine in various shapes, and sufficiently decrease the size of droplet of the fuel.

Abstract: Drip tubing is provided that has a first flow path and a second, independent flow path. A plurality of first drip irrigation devices are associated with the first flow path for dispensing fluid from the first flow path at a first precipitation rate. A plurality of second drip irrigation devices are associated with the second flow path for dispensing fluid from the second flow path at a second precipitation rate. The first and second drip irrigation devices are preferably different, and the first and second precipitation rates are also preferably different. One of the drip irrigation devices may be a drip emitter discharging drips of fluid and the other may be discharge fluid in a spray pattern.

Abstract: An expansion nozzle adapted for use in processing high pressure, high temperature liquids. A spring biases a nozzle head into contact with a nozzle seat, but the high pressure liquids processed by the nozzle move the nozzle head away from the nozzle seat to form an orifice therebetween. A motor rotates the nozzle head with respect to the nozzle seat during dynamic operation to grind particles lodged in the orifice. A threaded nut and a catch mechanism are effective to adjust the spring tension and thus the force of the upstream pressurized liquid needed to operate the nozzle. The nozzle can process liquids having gasses, slurries and high concentrations of particulate matter.

Abstract: A nozzle assembly includes a nozzle body with an inlet, an outlet, and a passageway extending from the inlet to the outlet, and with the passageway having a flow area and a fixed diameter at the outlet. A lever is supported at the nozzle body, and the nozzle assembly further includes an actuator, which is supported by the nozzle body and configured for varying the cross-section of the flow area through the outlet in response to the lever being moved relative to the nozzle body.

Abstract: A water purification system having an oil and vapor separation subsystem for removing many heavy duty and toxic contaminants from the water. The subsystem removes volatile vapors from the feed water, heats the feed water, and by imparting a swirling vortex action to the heated water, the oils are separated from the water. The water separated from the oil is pumped by a high pressure pump through a helical coil that is heated to a high temperature by the burner. The high temperature, hot water is then fed to an expansion nozzle in an expansion chamber to flash the hot water into steam. The steam is passed through a condenser which converts the steam to purified water.

Abstract: A water outlet for a low pressure sanitary outlet fitting has a perforated structure which is air-permeable counter to the water outlet direction and, in the unpressurized state, holds water in the outlet direction, and has a plurality of throughflow holes. At least one bypass is provided, which bypasses the perforated structure and has an opening cross section which is larger than the throughflow holes. A bypass valve is movable from a closed position into an open position counter to a resetting force as a consequence of an increase in pressure on the inflow side. If a hot water tank connected upstream of the water outlet fitting increasingly contracts as the heated water therein cools, air can nevertheless be sucked in via the perforated structure and the pressure can be equalized. If excessive pressures builds up with the heating of the water in the hot water tank, the bypass valve moves from a closed position into an open position counter to a resetting force.

Abstract: The invention relates to an actuator for a dispenser device for spraying contents of a receptacle that is pressurized or of a receptacle that has a pump, the actuator comprising a channel connectable to a receptacle outlet on one side of the actuator for receiving the pressurized contents of the receptacle, said channel having an orifice for spraying the contents on another side of the actuator, wherein an inlet connects the channel with a volume chamber, wherein the orifice has a valve for opening and closing the orifice, the valve biased by biasing means in the closed position, wherein the inlet has inlet reduction means for reducing the size of the inlet to the volume chamber. The invention is characterized in that the inlet reduction means comprises a flexible element.

Abstract: A locking element for a dispenser for discharging a medium, with an insert body, which has an outlet channel and an exit opening for the medium to be discharged, and a piston element which has a piston head co-operating with a piston seat and at least one elastic resilient leg, characterized in that a sealing element is arranged in the outlet channel, which forms the piston seat, and the piston element with the at least one resilient leg is arranged in an enlarging channel portion of the outlet channel, wherein the piston head is pre-tensioned against the piston seat and is pushed out of the piston seat by the exiting medium.

Abstract: An expansion nozzle adapted for use in high pressure, high temperature conditions. The expansion nozzle uses spring compression to operate under constant pressure conditions to efficiently flash hot water into steam. A motor can be employed to automatically adjust the extent of compression of the spring during the flashing operation, to thereby adjust the pressure of the liquid applied to the nozzle. In addition, the expansion nozzle can be equipped with a mechanism to allow cleaning or lapping of the orifice surfaces without disassembly of the expansion nozzle assembly.

Abstract: A fuel injector body has a fuel chamber and a valve seat around a fuel outlet. A valve body is positioned at the valve seat and a valve stem extends through the fuel outlet and fuel chamber. Engagement (disengagement) of valve body and valve seat closes (opens) the injector. The fuel chamber can comprise primary and secondary chambers connected by a valve passage and a metering member that restricts fuel flow between the chambers, thereby providing a flow-dependent closing force that reduces the dependence of fuel flow through the injector on fuel inlet pressure and that makes that flow dependent on an injector actuating force. The injector body or the valve body can comprise a spray-shaping surface arranged at least partly around the valve seat, which spray-shaping surface is arranged to direct a spray of fuel flowing through the fuel outlet.

Abstract: A selectively automatic fire fighting nozzle a method of use including adjustable means (ST) of limiting a range of automatic adjustment (B) of a discharge orifice of the nozzle, providing an option of selecting a constant pressure for a first fraction of a discharge window and selecting a relatively constant flow for a second fraction.

Abstract: A fuel injection valve which injects fuel from a nozzle hole includes a cavitation generation flow path in which a cavitation bubble is generated in fuel flowing inside the injection valve, and a bubble storage flow path which is connected to the cavitation generation flow path and the nozzle hole and which stores the cavitation bubble generated in the cavitation generation flow path. A fuel containing the cavitation bubble stored in the bubble storage flow path is injected from the nozzle hole so that atomization of an injected fuel spray is enhanced.

Abstract: A fire fighting nozzle includes a nozzle body with an inlet, an outlet, and a passageway extending from the inlet to the outlet. A stem is located in the passageway about which fluid flows when fluid is flowing through the passageway. And, a projecting body projects outwardly from the nozzle body away from the stem, which at least partially fills the space beyond the nozzle outlet where water exits the nozzle assembly.

Abstract: A fuel injector comprising an injector body having a spray aperture; a pintle extending within the injector body for axial movement between a closed position and an open position; said pintle head comprising a tapered portion engageable against the valve seat of the spray aperture and a cylindrical portion upstream of said tapered portion, an annular channel being provided defining a first part of a flow passage upstream of the spray aperture, wherein a discontinuity is provided downstream of the annular channel and upstream of the spray aperture to generate cavitation when the pintle stroke exceeds a predetermined limit to thereby generate a virtual channel of constant cross section downstream of the annular channel whereby the flow rate of the fuel flowing through said spray aperture is substantially independent of the stroke of the pintle when the pintle is in its open position.

Abstract: The present invention concerns a gas burner type combustion device called “burner” (B) projecting a mix of air and gas inflamed at the outlet of a pipe. The gas burner is fitted with a movable diffusion cone (200) whose tip (210) is located at least upstream from the flame creation zone so as to ensure the bursting of the air and gas mix, the relative displacement of the cone (200) according to the axis of diffusion defined by the flames allowing to adjust the strength of the latter.

Abstract: An apparatus for attenuating fuel pump noise in a direct injection internal combustion engine. In one proposal, the direct injection fuel nozzle is suspended from a fuel rail in a fashion that avoids direct metal-to-metal contact between the injector and the engine block. The direct injection nozzle may also be connected to the fuel rail by a pair of spaced-apart seals which equalize the longitudinal pressure on the nozzle during operation. Enlarged diameter fuel reservoirs and/or a restricted orifice may be provided fluidly in series between the fuel pump and the direct injection nozzle in order to attenuate noise resulting from fuel pump pulsation. A clip holder and clip plate mount the fuel injector to the injector cup.

Abstract: An actuator (4) is connected, on one side, to a valve needle (3), and on the opposite side, to a hydraulic piston (6) pertaining to a hydraulic length compensator. A working chamber (5) is divided by a tight separating membrane (9), into an actuator chamber (10) containing the actuator (4) and a fluid chamber (11) which can be filled with the fluid to be dosed in a pressurized manner while the actuator chamber (10) and the hydraulic chamber (7) are filled with a hydraulic fluid. A base pressure can be produced in the hydraulic fluid by means of the pressure of the fluid to be dosed, which is transmitted through the separating membrane (9).

Abstract: In an injection nozzle for an internal combustion engine including a nozzle housing, a closure member disposed in a nozzle opening and connected to a nozzle needle for axially moving the closure member outwardly off its seat in the nozzle opening to open the nozzle by providing a gap to permit fuel to be discharged into a combustion chamber of an internal combustion engine so as to form a fuel injection cone, the nozzle seal and the closure member have seal surface areas provided with turbulence chambers for imparting turbulence to the fuel flowing through the gap in order to more finely atomize the fuel forming the fuel cone in the combustion chamber.

Abstract: An air assist fuel injector having a solenoid with a metallic core, an armature, and a solenoid coil for generating a magnetic field in the metallic core to actuate the armature. A poppet is attached to the armature. A single piece metallic body forms part of the metallic core of the solenoid. The body has an impact surface upon which the poppet repeatedly impacts during operation of the injector.

Abstract: Disclosed is an injector nozzle through which fluid is delivered and which has a port (17) having an internal surface and a valve member (13) having a complementary external surface. The valve member (13) is movable relative to the port (17) to respectively provide a passage between the internal and external surfaces for delivery of fluid in the form of a spray. Alternatively, sealed contact of the surfaces will prevent the delivery of fluid. The nozzle includes a flow control body (30) located beyond an extremity of the port (17). The flow control body (30) has a control surface (33) arranged downstream of the port (17) in the direction of movement of the valve member (13). The control surface (33) is configured and positioned to promote the fluid spray established by the fluid issuing from the port (17) to in part follow a path determined by the shape of the control surface (33).

Abstract: A fuel injector for spraying fuel into a combustion chamber comprises a spray head (6) extending along a central axis (X) from a base (6a) to a free end (6b), the head comprising a free outside face (6c, 6d) defining an internal injection combustion (6), and at least two groups (01; 20; 30) of injection orifices, each of the groups (10; 20; 30) of injection orifices comprising a first orifice (11; 21; 31) and at least one second orifice (12; 22; 32), each adapted to spray a fuel jet along a respective first and second directions (D11, D21, D31; D12, D22, D32), the first and second directions forming between them an acute angle (?). All of the internal openings of the injection orifices in each of the groups of orifices are situated substantially in a common plane (P) extending substantially transversely relative to the central axis (X) of the head (6) of the injector. The injector particularly intended for a direct-injection diesel engine.

Abstract: A fire fighting nozzle for extinguishing industrial scale fires including improved automatic pressure regulating features, enhanced educting features including central and peripheral channeling for foam concentrate, and combining with a capacity to throw dry chemical. Improved pressure regulating features include a double acting baffle and preferably a relief valve.

Abstract: A fluid dosing device for a pressurized liquid is disclosed, which comprises a chamber (35) which is supplied with pressurized liquid by means of a liquid supply line (17, 19); a valve needle (9) which is guided through the chamber (35), the first end section of said valve needle being able to be lifted and the second end section thereof forming a valve in conjunction with a valve seat disposed on the housing (3). Metal bellows (33) are provided as a leadthrough element for the first end section of the valve needle (9). The metal bellows seal the chamber in said region in a tight manner. A throttle point (37, 39) is provided between the valve needle (9) and the inner wall of the chamber between the metal bellows (33) and the mouth (18) of the liquid supply line (17) leading into the chamber.

Abstract: A system for assisting in the atomisation of liquid particles conveyed in a gas stream flowing along a flow path having a rigid boundary, said system involving the creation of one or more shock waves in the gas stream. In a preferred embodiment, the system comprises a fuel injection nozzle (10) comprising a fluid flow passage (43) terminating at a discharge orifice (15) and incorporating a delivery port (33) defined between a valve seat (31) and a valve member (23) movable with respect to the valve seat for opening and closing the delivery port. Fuel is delivered along the fluid flow passage (43) into a combustion chamber through the discharge orifice (15) upon opening of the delivery port (33). The valve member (23) devines an inner boundary surface (47) of the flow passage (43) and the valve seat (31) defines at least part of an outer boundary surface (45) of the flow passage (43).

Abstract: The invention relates to a device for atomizing a liquid, thereby forming a hollow cone of liquid, comprising a housing into which a first liquid product can be supplied, said housing comprising an outflow end and an insert piece with a guide end that interacts with the outflow end, thereby forming an annular outflow gap, wherein the housing is accommodated in the bottom of a hollow casing; and wherein apertures are present in the bottom, while a second medium can be supplied into the hollow casing, flow out of the apertures and interact with the hollow cone. The invention also relates to a spray drier, with a device according to the invention, to a device for conditioning a liquid product using the invention, and a method for conditioning a liquid product, using a device according to the invention.