Abstract: A downhole tool having a downhole end and an uphole end, including: an anchor assembly positioned proximate to the downhole end; at least one flowmeter assembly selectively positionable from the downhole tool wherein the at least one flowmeter assembly includes a flowmeter having a throughbore generally aligned with an axis of the flowmeter; and a waveguide positioned proximate to the uphole end, wherein the at least one flowmeter assembly is positioned proximate to the anchor, wherein the waveguide extends through the throughbore and is secured at the anchor assembly.

Abstract: Provided is a fluidic oscillator circuit for a nozzle assembly configured to generate oscillating sprays of fluid from an outlet of the nozzle assembly and to improve spray performance of fluid having low temperatures or high viscosity. In one embodiment, provided is an interaction region for a fluidic oscillator circuit that includes an apex protrusion shaped to assist with generating vortices within the interaction region. In another embodiment, provided is an interaction region for a fluidic oscillator having a power nozzle that includes at least one finger protrusion that lengthens the power nozzle to create jets of fluid in the interaction region that are less diffused to improve cold performance of the fluidic oscillator circuit.

Abstract: A step cavity type low frequency ultrasonic atomization nozzle with a swirlable vortex impeller, has an air intake casing, an inlet casing, a Laval core, a fixed cap, an adjustable pedestal, and taper rectifying sleeve, swirlable vortex impeller, stepped resonance tube, regulative plunger, positioning lead, second pedestal. The regulative plunger is located in the second stepped hole of the stepped resonance tube, and its axial position is adjustable; the swirlable vortex impeller is fixed on the taper resonance tube through the bearing, and the outer cone surface is matched with the inner cone surface of the taper rectifying sleeve. The resonant cavity is improved so that the two-phase fluid in the cavity can generate higher frequency and greater fluctuation of the pressure fluctuation amplitude, optimize the initial atomization performance of the nozzle, and optimize the nozzle outlet, and increase the swirlable vortex impeller.

Abstract: The invention relates to various low flow rate fluidic nozzle inserts having a reverse mushroom-shaped mushroom insert geometry that are useful for a wide range of spraying and cleaning applications. In one embodiment, the present invention relates to fluidic nozzle inserts that are able to perform at low flow rates with geometrical and dimensional limitations. In still another embodiment, the present invention relates to compact fluidic nozzle inserts that provide a manner by which to attain a desired level of performance in a fluidic nozzle assembly for small scale applications at low flow rates.

Abstract: The present disclosure relates to automated or remotely controlled methods and apparatuses for cleaning and drying soiled external 2-D or 3-D image sensor surfaces such as objective lenses on Light Detection and Ranging (“LIDAR”) sensors when mounted in a configuration that is exposed to dirty environments.

Abstract: A fluidic scanner nozzle comprising an interaction chamber defined between an upstream end and a downstream end with a longitudinal chamber axis. The upstream end having an inlet opening for receiving and delivering pressurized fluid into said interaction chamber along said chamber axis. The downstream end having an outlet orifice for issuing a generally conical outlet spray of liquid droplets from said chamber into ambient environment and an axial gap positioned between said upstream end and said downstream end. The upstream and downstream ends may define inner cavities having a hemisphere shape. The axial gap may define a cylindrical sidewall segment aligned between an upper hemisphere shaped inner cavity and a lower hemisphere shaped inner cavity. The axial gap includes a selected axial length and an inside diameter that may be either a continuous axial gap or a stepped axial gap.

Abstract: A spray nozzle assembly for producing an oscillating spray discharge is provided. The spray nozzle assembly includes a nozzle body with a liquid inlet passage that converges via an inwardly converging conical section that defines a liquid inlet orifice. An expansion chamber communicates in a downstream direction with the liquid inlet orifice. An exit orifice communicates in the downstream direction with the expansion chamber. A pair of longitudinal veins and a pair of outwardly disposed feedback passages are provided in the expansion chamber. Each vein defines a respective downstream orifice to a respective one of the feedback passages adjacent the exit orifice and an upstream orifice to the respective one of the feedback passages adjacent the inlet orifice.

Abstract: A switching valve spool has a fixed shaft and a switching shaft coaxially arranged within. The switching shaft is linked with an operating unit and moves between a first, second, and third position in the fixed shaft along the axis. The switching shaft has an inlet and an outlet. In the first position of the switching shaft, the inlet is closed; in the second position of the switching shaft, the inlet is open and an air intake is formed between the side wall of the switching shaft closing to the outlet and the fixed shaft, when the water flows into the fixed shaft from the outlet, the air sucked from the air intake mixes with the water in the fixed shaft, because the fixed shaft diameter is larger than the outlet diameter; in the third position of the switching shaft, the inlet remains open and the air intake is closed.

Abstract: A supply port receives supply of washing liquid. An oscillation chamber oscillates the washing liquid supplied through the supply port. A jetting section jets the washing liquid oscillated in the oscillation chamber to the outside. The jetting section includes a passage connecting the oscillation chamber and the outside. The washing liquid enters the passage from the oscillation chamber through an entrance, passing through the passage, and emitted through an exit to the outside. A jet port is provided between the entrance and the exit, having a narrower width than those of the entrance and the exit. An outer guide connects the jet port and the exit. An inner guide connects the entrance and the jet port, and configured to conduct the liquid oscillated in the oscillation chamber to the outer guide.

Abstract: A droplet generator apparatus and droplet generation method based on high aspect ratio induced droplet self-breakup are provided. The droplet generator apparatus includes a channel (1) and a nozzle (2) connected to the channel(1), and the aspect ratio of the channel (1) can be 3.0 or greater. The apparatus may further include a blocking rail (10) that is positioned in front of the nozzle (2), a supplying rail(9) that is positioned in front of the nozzle (2), and a supplying trench (8) formed in a space between the nozzle (2) and the supplying rail (9).

Abstract: An external lens washing system has an aiming fixture configured to support and constrain an external lens which is exposed to the elements and apt to become soiled with debris. A nozzle assembly is configured to be supported and aimed toward the external lens by the aiming fixture and has at least one laterally offset washing nozzle projecting from the aiming fixture to a spray washing fluid toward the external lens surface, spraying at a shallow, glancing spray aiming angle to impinge upon and wash the lens external surface. Optionally, an integrated image sensor and lens washing assembly is configured for use with a remote control method for cleaning an exterior objective lens surface and includes a sealed image sensor housing assembly including an integral, remotely controllable lens cleaning system with an optimized configuration for aiming one or more cleansing sprays from one or more laterally offset fluidic oscillators.

Abstract: A vehicle front structure includes a front window glass, a washer nozzle, a cowl, and plate members. The front window glass includes angle-of-view areas at its upper portions. The angle-of-view areas cover angles of view of left and right imagers disposed on an interior of a vehicle. The washer nozzle ejects a washer fluid to an outer surface of the front window glass. The cowl is recessed and extends in a vehicle width direction between the front window glass and a front hood. The plate members stand erect in the cowl and extend in a vehicle front-rear direction. The plate members are disposed at least one at each outer side, in the vehicle width direction, of a widthwise center of the vehicle. The plate members extend toward an area interposed between outer edges of the angle-of-view areas in the vehicle width direction in a plan view of the vehicle.

Abstract: A spray nozzle for two-component flue gas cleaning nozzles. The spray nozzle includes an output or mixing chamber and at least two through bores which lead to the output or mixing chamber and are each connected to a fluid line. At least one through bore is embodied in such a way that it is self-cleaning and/or a cleaning device is provided for at least one through bore.

Abstract: Disclosed is a source gas jetting nozzle which includes a connection pipe having a portion connected to a source gas supplier, a first gas pipe including a communication hole communicating with the connection pipe by connecting to one end of the connection pipe and a first jetting hole, the communication hole and the first jetting hole being formed on the outer surface of the first gas pipe, and a second gas pipe including the first gas pipe inside the second gas pipe, and including a first insertion hole for inserting a predetermined part of the connection pipe to connect the one end of the connection pipe to the communication hole of the first gas pipe, and a second jetting hole for jetting the source gas introduced from the first gas pipe.

Abstract: A spa nozzle has a fluidic oscillator for oscillating a jet of water back and forth through an outlet aperture and a pair of diverging sidewalls extending downstream of the outlet aperture for issuing a sweeping jet of water into the spa. An air entrainment port is formed in each diverging sidewall downstream of the outlet aperture. The top and bottom walls in the oscillator interaction region diverge sufficiently so as to provide a relatively large outlet aperture area but not so large as to cause the jet to roll as it exits the outlet aperture, and wherein the ratio of the depth D of the power nozzle to the width W thereof is from about 2.9 to about 3.1 and the ratio of the depth D of the outlet throat to the width W thereof is from about 4.4 to about 4.6.

Abstract: An oscillating or pulsing fluid stream, or flow, is produced from a flow of pressurized air by fluidic apparatus in a device configured for use in surface cleaning, sweeping, lawn care applications, and the like. A converging nozzle assembly defining a tapered internal lumen having a smooth narrowing profile is configured to generate at a power nozzle a high velocity stream with minimal pressure drop. Downstream of the power nozzle, first and second control ports are in fluid communication with the high velocity stream and with each other via an inertance loop having a lumen of selected cross sectional area and length. The varying air flow is directed through an outlet chamber shaped to produce an oscillating or a pulsating flow.

Abstract: A filtering nozzle assembly or spray head has a conformal nozzle component engineered to generate a filtered spray and configured as a small cylindrical member having a substantially open proximal end and a substantially closed distal end wall with a centrally located discharge orifice defined therein. Optionally, cup-shaped filtered orifice defining member also includes a fluidic circuit's oscillation inducing geometry molded into the cup or directly into the distal surface of a sealing post and the one-piece filter cup provides the fluidic circuit's discharge orifice.

Abstract: An automatically alignable conformal, cup-shaped fluidic nozzle engineered to generate an oscillating spray is configured as a cylindrical cup having a substantially open proximal end and a substantially closed distal end wall with a centrally located power nozzle defined therein and between first and second distally projecting alignment tabs or wall segments. Optionally, the fluidic circuit's oscillation inducing geometry is molded directly into the sealing post's distal surface and a one-piece cup provides the discharge orifice.

Abstract: A fluidic oscillator contains at least one channel including an interacting cavity disposed therein, a first inlet communicating with the interacting cavity to flow fluid inward, and a first outlet communicating with the interacting cavity to spray the fluid flowing through the interacting cavity outward, characterized in that: at least one turbulent flow passage is used to guide the fluid to flow into the interacting cavities from one of two opposite first longitudinal walls of the interacting cavities so that a turbulent flow effect is generated in the interacting cavities, and then the fluid flows out of the first outlets to generate oscillatory spray.

Abstract: A fluidic device which produces fluid pulses having a selected pulse repetition frequency, pulse duration, pulse peak pressure and pulse peak flow rate includes first, second and third fluid flow controlling channels or lumens which converge in a junction, defining a “Y” configuration having a base leg and right and left diverging arms. The first leg portion has a fluid input and terminates downstream at the Y junction of the base and the two diverging arms. The first leg has converging walls which reduce the cross sectional area of the flow to thereby increase the fluid velocity to make a fluid jet. The second or right leg, begins at the Y junction and terminates distally in an enclosed, fluid-tight container having a selected blind volume. The third, or left leg, begins at the Y junction and terminates distally in a fluid outlet passage having a selected cross-sectional area.

Abstract: Apparatus producing superheated water and/or steam for weed (36) killing, etc. has diesel fired boiler (30), which, via pump (32), generates hot water at a pressure of 40-52 bar and temperature of 90-115° C. This passes down tube (12) and encounters the constriction provided by nozzle (14). Passing through nozzle (14) into depressurization chamber (16), which is at atmospheric pressure, the water boils. When the super heated water exits ports (20) of distribution pipe (18) it encounters ambient temperature and is transformed into high temperature water vapor and/or water droplets. The apparatus controls or kill weeds (36) using a smaller volume of water and less energy.

Abstract: A fluid spraying or nozzle system adapted for use with cold fluids, viscous fluids or fluids under light pressure includes a fluidic oscillator having a power nozzle and an oscillation chamber coupled to the power nozzle for issuing a jet of fluid into the oscillation chamber and an outlet aperture spraying a jet of fluid into ambient space. The oscillator's walls define an oscillation inducing interaction region causing the jet of fluid to rhythmically sweep back and forth between the sidewalls in the oscillation chamber. The oscillation inducing interaction region defines an outlet throat width which is adapted to work with the power nozzle's width and an a bell-shaped feed that spreads the fluid jet as it leaves the power nozzle, so that the interaction region and feedback channels are quickly filled with fluid at a low pressure and the fluidic oscillator is activated to generate a desired fan pattern of fluid spray.

Abstract: An improved fluidic spray device that includes: (a) a base having boundary surfaces including top, bottom and side edge surfaces, (b) a plurality of projections extending from a base boundary surface chosen from the group consisting of its top and bottom surfaces, wherein these projections are configured and spaced so as to provide the interior geometry of the flow passages for a fluidic circuit having a power nozzle and an interaction region located downstream of the power nozzle, and (c) wherein the flow passages that are proximate the base edges having no sidewalls to form edge boundaries for these flow passages.

Abstract: Provided is a water jet massage apparatus. The water jet massage apparatus includes a nozzle and a lamp. The nozzle sprays a mixed water jet including air and water. The lamp is disposed in the nozzle. Here, the mixed water jet is sprayed between the lamp and the nozzle while surrounding the lamp. The lamp emits light in a spray direction of the mixed water jet. The nozzle includes a first nozzle part and a second nozzle part. The first nozzle part has a cylindrical shape and has a plurality of air spray holes along an inner circumferential surface thereof. The second nozzle part is detachably disposed in the first nozzle part and having at least one water spray hole.

Abstract: A descaling nozzle that can efficiently remove scale from a steel sheet. A spray section at an end of the descaling nozzle includes a taper portion continuous with a large diameter portion that forms a cylindrical channel, a first orifice formed on an outlet side of the taper portion, a resonant chamber continuous with an outlet side of the first orifice and that has a dimension in a radial direction that is greater than a major axis of the first orifice, and a second orifice formed on an outlet side of the resonant chamber.

Abstract: A fuel injector for an internal combustion engine comprising a nozzle body having at least one spray hole. The at least one spray hole has a hole entry on the inside of the nozzle body and a hole exit on the outside of the nozzle body. The spray hole is provided with a hole entry section which, starting from the hole entry, has a flow area which decreases from a relatively larger flow area at the hole entry to a relatively small flow area at the intersection between the end of the hole entry section and the start of a hole exit section. The hole exit section, starting from the intersection with the hole entry section, has a flow area which increases from a relatively small flow area at the intersection with the hole entry section to a relatively larger flow area at the hole exit.

Abstract: An outlet mechanism with pulsatile splash has a main waterway comprising an inlet waterway, two branch waterways and two back-flow waterways; the two branch waterways communicate with the outlet end of the inlet waterway and are arranged symmetrically with respect to the inlet waterway. The outlet directions of the outlet ends of the two branch waterways intersect; the two back-flow waterways are arranged symmetrically with respect to the inlet waterway, and one end of the back-flow waterway communicates with the branch waterway. Another end of that communicates with the inlet end of the inlet waterway. Part of water in the branch waterway is returned to the inlet end of the inlet waterway by the back-flow waterway. The remain water in the two branch waterways intersect when water comes out of the outlet, so that the left-and-right-swing outlet effect, and then the pulsatile splash outlet effect are generated.

Abstract: A spray head for spraying a cosmetic or dermatological composition, in particular for application to the human body, may include a sonotrode for transmitting ultrasound vibration from a transducer to an ejection surface for ejecting particles of composition, the sonotrode including a channel for feeding the composition to the ejection surface. The channel may present a narrow portion between a composition inlet into the sonotrode and the composition outlet to the ejection surface.

Abstract: The present invention is directed to a microflush urinal that includes a piece of chinaware in fluid communication with a pre-existing water supply and a waste removal conduit. A valve means in electrical communication with each of a sensor means and a fluid manifold effects delivery of incoming fluid to a water delivery means. The water delivery means is desirably a nozzle means selected from one of a plurality of fluidic nozzles that delivers pressurized water through an ingress defined in a rear wall of the chinaware. The nozzle desirably oscillates water for full coverage of the urinal's rear and side walls. A tarp portion that aesthetically obstructs the ingress assumes a generally scalloped shape to optimize the water distribution along the urinal's rear and side walls. At least one trough is integrated into one or more urinal sidewalls to guide water from the nozzle toward the waste removal conduit.

Abstract: A reverse-flow nozzle generates a cavitating and/or pulsed jet of pressurized liquid. The nozzle includes a body having an inlet for receiving a stream of liquid and a main channel through the body extending from the inlet to an outlet. A flow-reversing channel in the nozzle diverts a portion of the liquid from the main channel to a point downstream of a mixing chamber. The channel returns the diverted liquid back into the mixing chamber as a reverse-flow jet relative to a main stream of liquid flowing toward the outlet. This reverse-flow jet interacts with the main stream to generate the cavitating jet that discharges from the outlet. By angling the reverse-flow jet relative to the main stream, a naturally pulsed jet may be generated.

Abstract: An improved fluidic device that operates on a pressurized liquid flowing through it at a specified flow rate to generate an oscillating spray of liquid droplets having desired properties (e.g.

Abstract: A fluid spraying device comprises a fluid oscillator used to oscillate fluid to generate spraying water and including an inlet, at least one power nozzle, an interacting chamber, and an outlet, characterized in that: the fluid oscillator including a first portion and a second portion; a connection of the first and the second portions communicates with the power nozzle to flow fluid through a predetermined traveling position, and the first portion includes the inlet and a section of the power nozzle, and the second portion includes the outlet and another section of the power nozzle, by using an interaction of the first and the second portions, a cross sectional area of the fluid at the connection of the first and the second portions is changed to adjust spraying water from the outlet.

Abstract: An automatic washing device includes a plurality of fluidic oscillators arranged on the periphery of a rotating drum. The fluidic oscillators emit a pulsatile stream of fluid at a predetermined angle through a slit that is perpendicular or at an angle to a longitudinal axis of the oscillator. The automatic washing device can remove microorganisms from the pliant epidermal surface of a human hand that comprises brushlessly scrubbing the pliant epidermal surface of the human hand with a plurality of cleansing fluids.

Abstract: In an apparatus for wetting a glass pane, in particular a glass pane of a motor vehicle, a spherical body (15) which supports a nozzle body (20) is inserted into an accommodation space (10) which is formed in a bearing head (9) of an insert body (1). The accommodation space (10) exhibits the spherical body (15) together with resistance projections (12) which fix an annular shoulder and also serve to fluidically stabilize a liquid fluid, which flows into a flow expansion space as a subregion of the accommodation space (10), in the form of, for example, wash water. An oscillating fan-like stream can be reliably generated as a result.

Abstract: An improved fluidic oscillator, that operates on a pressurized liquid flowing through the oscillator to generate a liquid jet that flows into the surrounding gaseous environment to form of an oscillating spray of liquid droplets, includes: a member into which is fabricated a two-portion, flow channel, with its first portion configured so as to create the flow phenomena in the member that yields the spray's oscillating nature, and its second portion includes a splitter that is used to divide the jet into component sprays whose centerlines assume a specified yaw or pitch angle relative to the centerline of the oscillator.

Abstract: A method and device for passively periodically perturbing the flow field within a microfluidic device to cause regular droplet formation at high speed.

Abstract: A fluidic oscillator contains at least one channel including an interacting cavity disposed therein, a first inlet communicating with the interacting cavity to flow fluid inward, and a first outlet communicating with the interacting cavity to spray the fluid flowing through the interacting cavity outward, characterized in that: at least one turbulent flow passage is used to guide the fluid to flow into the interacting cavities from one of two opposite first longitudinal walls of the interacting cavities so that a turbulent flow effect is generated in the interacting cavities, and then the fluid flows out of the first outlets to generate oscillatory spray.

Abstract: An insert body (10) for a spray nozzle assembly (1) has a fan jet producing section (17) for producing an oscillating, large-area fan jet and a point jet producing section (18) for producing at least one point jet located in the wetting area of the fan jet. It is thereby ensured that even if the fan jet collapses or is pushed aside, the surface is wetted at least by the or each point jet, which are much more forgiving from a fluid dynamics standpoint.

Abstract: A tank-cleaning nozzle having an inlet tube, a cleaning head mounted for rotation on the inlet tube and at least one spray nozzle disposed on the cleaning head. The spray nozzle is in the form of a fluidic oscillator nozzle producing an oscillation solid jet at an outlet from the nozzle.

Abstract: A method and apparatus for separating a solution containing a target substance. The solution is atomized into a mist in an atomizer (1) to produce a mixed fluid of mist and gas. In the collection of the mist from this mixed fluid, a gas transmission membrane (51) is used. The gas transmission membrane has a pore size that transmits gas but does not transmit the target substance contained in the mist. The mixed fluid is brought into contact with the primary surface of the gas transmission membrane (51), and the pressure on the primary surface is made higher than the pressure on the secondary surface of the opposite side. Thus, the gas in the mixed fluid is allowed to pass through the gas transmission membrane (51) to separate part or all of the gas contained in the mixed fluid.

Abstract: A full coverage fluidic oscillator (2) includes a fluidic circuit member preferably having an oscillation inducing internal chamber, at least one inlet (8) or source of fluid under pressure, at least a pair of output nozzles (14, 16) connected to the source of fluid for projecting at least first and second impinging fluid jets into free space, where the first and second impinging jets collide or impinge upon one another at a selected jet angle to generate a substantially omni-directional sheet jet having selected thickness. The first and second jets are aimed at a pre-selected intersection point in free space where impingement is to occur. The sheet jet's thickness ?y is determined by the time-varying path or oscillation of each of the first and second impinging jets. The first and second impinging jets can be made to oscillate or pulsate by use of vortex generating amplifier structures (68, 70, 72, 149) within the internal chamber's fluid flow paths.

Abstract: A fluid spraying device comprises a fluid oscillator used to oscillate fluid to generate spraying water and including an inlet, at least one power nozzle, an interacting chamber, and an outlet, characterized in that: the fluid oscillator including a first portion and a second portion; a connection of the first and the second portions communicates with the power nozzle to flow fluid through a predetermined traveling position, and the first portion includes the inlet and a section of the power nozzle, and the second portion includes the outlet and another section of the power nozzle, by using an interaction of the first and the second portions, a cross sectional area of the fluid at the connection of the first and the second portions is changed to adjust spraying water from the outlet.

Abstract: A fluid spraying or nozzle system adapted for use with cold fluids, viscous fluids or fluids under light pressure includes a fluidic oscillator having a power nozzle and an oscillation chamber coupled to the power nozzle for issuing a jet of fluid into the oscillation chamber and an outlet aperture spraying a jet of fluid into ambient space. The oscillator's walls define an oscillation inducing interaction region causing the jet of fluid to rhythmically sweep back and forth between the sidewalls in the oscillation chamber. The oscillation inducing interaction region defines an outlet throat width which is adapted to work with the power nozzle's width and an a bell-shaped feed that spreads the fluid jet as it leaves the power nozzle, so that the interaction region and feedback channels are quickly filled with fluid at a low pressure and the fluidic oscillator is activated to generate a desired fan pattern of fluid spray.

Abstract: A method of producing a pulsatile jet flow from a substantially constant flow primary jet in a way that is mechanically efficient, easy to implement, and allows direct control over pulse duration and pulsing frequency is disclosed herein. The invention includes at least two components: (a) a constant flow fluid jet produced by any normal method (e.g., propeller) that can be directionally vectored fluidically, mechanically, or electromagnetically and (b) a nozzle with multiple outlets (orifices) through which the vectored jet may be directed. By alternately vectoring the jet through different outlets, a transient (pulsatile) flow at an outlet is obtained even with a substantially constant primary jet flow. Additionally, the nozzle outlets may be oriented in different directions to provide thrust vectoring, making the invention useful for maneuvering, directional control, etc.

Abstract: A fluidic device, that operates on a pressurized liquid flowing through it to generate an oscillating spray having desired three-dimensional flow characteristics, includes a member that has fabricated within it at least two liquid flow channels that are configured in the form of a fluidic circuit having an inlet and an outlet and a centerline therebetween. These flow channels are further configured so that the straight line projections of their centerlines, that extend from their outlets, intersect at a prescribed intersection angle, ?, and the outlets are separated by a characteristic separation distance, “w.” We have found that the values of the intersection angle, ?, and separation distance, “w,” can be are chosen so as to yield the desired three-dimensional flow characteristics of the spray.

Abstract: A compact, molded liquid oscillator nozzle having a longitudinal axis and a power nozzle, an interaction region having diverging sidewalls, top and bottom walls, and a pair of control ports at opposing sides of the interaction region, and an inertance loop connecting the control ports, characterized in that the inertance loop is molded in a plane that is transverse to the longitudinal axis.

Abstract: A fuel injection system includes a fuel injector that includes a nozzle assembly and at least one passageway that includes at least one fluid oscillator. The at least one passageway extends from a nozzle orifice, positioned on the outside of the fuel injector, to inside the fuel injector. Fuel from inside the fuel injector moves through the at least one fluid oscillator and oscillates between a high injection rate and a low injection rate as it moves through the at least one nozzle orifice and into the combustion chamber.

Abstract: A fluidic circuit or oscillator is provided with one or more small raised bumps or protrusions near the outlet or exhaust of a fluidic circuit to alter the spray pattern by re-distributing heavy areas of flow, resulting in a more uniform spray. The fluidic oscillator enclosure operates on a pressurized liquid flowing through the oscillator to generate a liquid jet that flows from said oscillator and into a surrounding environment to form an oscillating spray of liquid droplets, where the oscillator generates a stream of liquid droplets. The outlet or throat structure includes at least one bump or protuberance configured to project into the oscillating spray.

Abstract: An improved fluidic device that operates on a pressurized liquid flowing through it at a specified flow rate to generate an oscillating spray of liquid droplets having desired properties (e.g.

Abstract: For those spray applications that use a fluidic oscillator of the type that generates a spray by having a pressurized liquid flow through the oscillator and exhaust into a surrounding environment, and where such an oscillator has a boundary surface which has fabricated into it a channel in the form of what is referred to herein as fluidic circuit, an improved enclosure for this oscillator includes: a body having an interior and an exterior surface, wherein a portion of this interior surface is configured to attach to the oscillator boundary surface so as to form with the oscillator's channel an enclosed pathway through which the to-be-sprayed liquid may flow, and wherein a segment of this interior surface is configured so as to yield specified properties of the resulting spray.