Abstract: A fuel injector is provided having a needle valve element and a nozzle member with a central bore configured to slidingly receive the needle valve element. The fuel injector also has a spring configured to bias the needle valve element toward a closed position. In addition, the fuel injection assembly has a guide element configured to reduce a lateral movement of the needle valve element. The fuel injection assembly further has a fluid flow restricting device configured to restrict the flow of a fluid through the needle valve element and create a fluid pressure differential between the fluid upstream and downstream of the fluid flow restricting device.

Abstract: A fuel injector for the direct injection of fuel into a combustion chamber of an internal combustion engine includes an energizable actuator, a valve needle, which is in operative connection with the actuator and acted upon by a restoring spring in a closing direction to actuate a valve-closure member, which forms a sealing seat together with a valve-seat surface formed at a valve-seat body. The valve-seat body includes at least two spray-discharge orifices. The pressure of the fuel flowing through the fuel injector is greater than 10 bar.

Abstract: The disclosure provides a fuel injection nozzle. The fuel injection nozzle includes a nozzle body, with the nozzle body defining a central bore. A fuel atomizer is disposed in the central bore. The fuel atomizer defines a spill-return bore and a swirl chamber. The swirl chamber is in fluid communication with the central bore. The spill-return bore includes a return swirler approximate the swirl chamber. An air supply pump is coupled to the fuel atomizer and is in fluid communication with the spill-return bore. The air supply pump is configured to selectively inject air into the swirl chamber through the spill-return bore.

Abstract: A nozzle for a low pressure fuel injection that improves the control and size of the spray angle, as well as enhances the atomization of the fuel delivered to the cylinder for an engine, at relatively low pressures. The nozzle includes a metering plate having inner and outer exit cavities in rings spaced circumferentially about a center exit cavity.

Abstract: A fuel injection valve for an internal combustion engine is such that an inside wall of a nozzle hole through which fuel is injected into a combustion chamber or an intake port of the internal combustion engine is coated with a composite coating formed of a lipophilic portion and an oil repelling portion which are finely interspersed on the nano order. The inside wall of the nozzle hole is formed by multiple grooves extending in the fuel jet direction and flat portions between these grooves, and inside walls of the grooves are coated with an oil repellant coating and the flat portions are coated with a lipophilic coating.

Abstract: Fuel injectors with intensified fuel storage and methods of operating an engine therewith. At least one storage cavity is provided in the intensifier type fuel injector, with a check valve between the intensifier and the needle chamber and storage cavity preventing loss of injection pressure while the intensifier plunger cylinder is refilling with fuel. This provides very efficient injector operation, particularly at low engine loads, by eliminating the wasted energy of compressing, venting and recompressing fuel for injection. Various injector designs and methods of operating the same in an engine are disclosed.

Abstract: In an injector, a first shaft portion of a needle is slidably supported by a first sleeves which is loosely received in a first internal chamber, and a second shaft portion of the needle is slidably supported in a body. Thereby, the first and second shaft portions are supported by the different members, and a relatively large clearance is formed on a radially outer side of the first sleeve.

Abstract: A fuel injection valve is provided that includes a valve seat member (3) having a conical valve seat (8) and a valve hole (7) formed through a central part of the valve seat (8), a valve body (18) working in cooperation with the valve seat (8), and an injector plate (10) joined to the valve seat member (3) and having a plurality of fuel injection holes (11) radially outwardly displaced from the valve hole (7), a diffusion chamber (39) providing communication between the valve hole (7) and the fuel injection holes (11) being provided between the valve seat member (3) and the injector plate (10), wherein the diffusion chamber (39) formed between the valve seat member (3) and the injector plate (10) is in an annular shape, has a diameter that is larger than that of the valve hole (7), and has inner ends of the fuel injection holes (11) opening therein, and a plurality of fuel passages (42a, 42b) are disposed within the valve hole (7), the plurality of fuel passages (42a, 42b) reversing within the valve hole (7)

Abstract: A fuel injection device has a nozzle body formed with an injection hole for injecting fuel and a nozzle needle reciprocating in the nozzle body to open and to close the injection hole. The nozzle needle has a sliding portion capable of moving in the nozzle body in a sliding manner, an insertion portion, of which diameter is smaller than that of the sliding portion, and a pressure receiving portion connecting the sliding portion with the insertion portion. The nozzle body has a guide portion for slidably holding the sliding portion and a fuel sump chamber formed on the injection hole side of the guide portion. The insertion portion is inserted through the fuel sump chamber. A clearance decreasing toward the fuel sump chamber is provided between the guide portion and the sliding portion.

Abstract: An injection tip of a direct-injection injector includes an injection valve having a valve seat and a valve ball, and tangential inflow holes feeding fuel into a flow area between the ball and the seat. The fuel enters the flow area tangentially thereby causing a swirling motion of the fuel in the flow area. A symmetric velocity profile is created and the flow variations in the flow area are reduced compared to the prior art. Furthermore, the impact force of the inflowing fuel stream on the surface of the ball is reduced compared to the prior art, since in accordance with the invention the fuel stream acts tangentially on the surface of ball. The mass flow rate through the injection valve can be increased by increasing the size of the tangential inflow holes and/or the size of director holes in fluid communication with the flow area.

Abstract: In a fuel injection nozzle for an internal combustion engine, a first cavity is disposed downstream of a valve seat in a direction in which fuel flows. A second cavity is disposed downstream of the first cavity in the direction in which the fuel flows. A fuel passage connects the first cavity to the second cavity. Fuel injection holes (24) lead to the second cavity. With this configuration, when the fuel flows through the first fuel passage, cavitation is induced. Cavitation bubbles flow into the second cavity along with the fuel. When the fuel is retained in the second cavity, the cavitation bubbles are uniformly mixed into the fuel. The fuel, which has been sufficiently mixed with the cavitation bubbles, is injected from the fuel injection holes.

Abstract: For preventing clogging in an injection nozzle for supplying a reducing agent to exhaust gas flow on an upstream side of a reducing catalyst and for improving the efficiency of NOx purification processing, the injection nozzle 14 has a tip end portion 18 provided with a ring shaped protruding ridge 19 disposed on an outer peripheral surface of an exhaust gas downstream side end portion of the tip end portion 18 that is arranged substantially in parallel with an exhaust gas flow direction A inside an exhaust pipe 13, the ring shaped protruding ridge 19 being provided with injection hole or holes 20 drilled outward from the central axis of the injection nozzle 14, so that the reducing agent is ejected on the exhaust gas upstream side of the reduction catalyst, from the injection holes 20.

Abstract: A fuel injector for the injection of fuel into the combustion chamber of an internal combustion engine includes a valve needle guided in a nozzle body, the valve needle being actuable by an actuator and acted upon by a restoring spring in such a manner that a valve-closure member which is in operative connection to the valve needle is retained in sealing contact against a valve-seat surface. Formed at a downstream-side end of the fuel injector is a projection which projects beyond the valve-closure member of the fuel injector.

Abstract: A method and apparatus for injecting fluid into a machine are disclosed. A fluid injector is disclosed having a nozzle body with first and second body portions and at least one fluid injection orifice within the second body portion. The nozzle body may be configured for transmitting fluid from the first body portion toward the orifice. The fluid injector may also include a check member movably arranged inside the nozzle body for affecting fluid flow through the orifice and having a contoured outer surface defining (i) a recessed region and (ii) a generally convex region forming at least a portion of the recessed region.

Abstract: A fuel injector includes an orifice plate situated downstream from a valve-seat body having a fixed valve seat, the orifice plate having at least one outlet opening. Provided directly upstream from the outlet openings is an inflow opening having an annular inflow cavity. The valve-seat body covers the inflow cavity in such a way that the downstream outlet openings of the orifice plate are covered. The inflow cavity directly upstream from the at least one outlet opening is configured such that the flow approaches the at least one outlet opening largely at a right angle to the longitudinal extension of the outlet opening. With regard to the cross section, the at least one outlet openings has a polygonal form, in particular one that encloses at least one triangle, or it has a meander shape with a plurality of curves in the outer contour. The fuel injector may be particularly suitable for use in fuel injection systems of the mixture-compressing internal combustion engines having external ignition.

Abstract: A fuel injector having a nozzle with depressions for increasing fluid turbulence and preventing deposit build up within the injector to increase performance, longevity and fuel economy.

Abstract: The fuel injector including an orifice plate which is provided with a multitude of outlet openings and situated downstream from a valve-seat body having a fixed valve seat. Directly upstream from the outlet openings is an inflow opening having an annular inflow cavity. The valve-seat body covers the inflow cavity in such a way that the downstream outlet openings of the orifice plate are covered. The outlet openings each have an inflow region whose diameter D1 is considerably larger than the diameter D2 of a region that abuts at a sharp angle directly downstream therefrom, which forms the narrowest cross section of the outlet opening and from where the outlet opening widens in the flow direction to a diameter D3 in a trumpet-shaped manner. The fuel injector may be particularly suitable for use in fuel injection systems of mixture-compressing ignition engines having externally supplied ignition.

Abstract: Methods and apparatus for injecting reagent, such as an aqueous urea solution, into an exhaust stream in order to reduce emissions from an engine exhaust. The present teachings can use a whirl plate having a plurality of whirl slots surrounding an exit orifice of an injector, which produce a high velocity rotating flow in the whirl chamber. When the rotating flow of reagent is passed through the exit orifice into an exhaust stream, atomization occurs from a combination of centrifugal force and shearing of the reagent by air as it jets into the exhaust stream.

Abstract: An actuating push button of a dispensing system of a liquid, that includes a body and a dispensing chamber in communication with a shaft which is formed in said body to pump the liquid, said chamber being provided with at least one orifice for the dispensing of the pumped liquid, said push button including an added cover which is associated to the body with the upper wall of said body arranged across from the lower wall of said cover, a cavity being formed on at least one of these walls in such a way as to form the dispensing chamber between said walls.

Abstract: An injection nozzle is used in particular for introducing an oxidizable fluid into an exhaust system upstream of a catalyst or filter. The injection nozzle includes a heating element and a heat accumulator, which can be heated up by the heating element and can dissipate stored heat to the oxidizable fluid. A method for introducing an oxidizable fluid into an exhaust system upstream of a catalyst or filter utilizes the injection nozzle that includes the heating element and a heat accumulator. The heating element is switched on before an injection process, so that the heat accumulator is heated up, and the oxidizable fluid only is injected later, so that the heat accumulator can release energy to the oxidizable fluid and can evaporate the same.

Abstract: A fuel injector provided with: an injection valve comprising an injection nozzle; a mobile needle for adjusting the flow of fuel through the injection valve and ending in a shutting head which engages a valve seat of the injection valve; an actuator for displacing the needle between a closing position and an opening position of the injection valve; a catch element which constitutes an upper end stroke of the needle and defines the opening position; and a mechanical damping device which is interposed between the needle and the catch element and which is adapted to generate on the needle an elastic force which opposes to the movement of the needle towards the opening position when the needle is in proximity of the catch element.

Abstract: A fuel injector for use in an internal combustion engine, comprising a nozzle body being provided with a nozzle bore and at least one set of one or more outlets for fluid, an outer valve member received within the nozzle bore and being engageable with a first seating region of the nozzle body to control the flow of a first fluid from a first delivery chamber, the outer valve member being provided with an outer valve bore, and an inner valve member received within the outer valve bore and being engageable with a second seating region of the nozzle body to control the flow of a second fluid from a second delivery chamber. In various embodiments, the fuel injector can be arranged to allow the first and second fluids to be injected separately and/or together. In one embodiment, the first and second fluids can be mixed within the injector before injection.

Abstract: A fuel injector having an injection nozzle comprising a nozzle body being provided with a nozzle bore, an outer valve received within the nozzle bore and being engageable with a first seating to control fuel delivery through a first set of one or more nozzle outlets. The outer valve is provided with an outer valve bore within which an inner valve is received the inner valve being engageable with a second seating to control fuel delivery through a second set of one or more nozzle outlets. The fuel injector further includes an injection control chamber for fuel and pressure control means for controlling the pressure of fuel within the injection control chamber.

Abstract: In a fuel injection valve, a fuel guide member facing the valve hole is connected to an injector plate, and an annular diffusion chamber is formed between a valve seat member and the injector plate. A pair of first notches, a pair of second notches, and a plurality of closing parts are formed in an outer periphery of the fuel guide member. The first notches are arranged on a first diameter line of the valve hole. The second notches are arranged on a second diameter line perpendicular to the first diameter line. The closing parts are provided between the first and second notches to partially close the valve hole. A plurality of fuel injection holes are dispersally arranged in outside regions corresponding to the closing parts and inside regions corresponding to the first notches.

Abstract: A fuel injector provided with: an injection valve comprising an injection nozzle; a movable plunger for adjusting the flow of fuel through the injection valve and ending in a shutting head which engages a valve seat of the injection valve; an actuator for displacing the plunger between a closing position and an opening position of the injection valve; an annular backing element which constitutes an upper stroke end of the plunger and defines the opening position; and a hydraulic damping device which is adapted to generate on the plunger a hydraulic force which opposes the movement of the plunger towards the opening position when the plunger itself is close to the backing element.

Abstract: An injection nozzle (4) for an internal combustion engine, the injection nozzle (4) including a nozzle body (6) provided with a bore (8) defining a valve seating surface, and having a first nozzle outlet and a second nozzle outlet, a first delivery chamber upstream of said nozzle outlets, an outer valve member, moveable within the bore (8) and itself provided with an axial bore (8), wherein the outer valve member is engageable with an outer valve seat defined by the valve seating surface so as to control fuel flow from a first delivery chamber to at least the first nozzle outlet when the outer valve member lifts from its seat.

Abstract: When fuel injection is carried out, an amount of deposit produced newly around a second injection hole is estimated on the basis of an amount of fuel injected from at least the first injection hole. The amount of produced deposit estimated every time the first fuel injection is carried out is integrated. When the integrated value of the amount of deposit reaches a set value, fuel injection in which the second injection hole is used is carried out to remove the deposit.

Abstract: Disclosed is a valve comprising a valve member (72) that is guided so as to be movable in the direction of the longitudinal axis (73) thereof, extends into a valve pressure chamber (77), and is provided with a sealing surface (81) on a face which runs perpendicular to the longitudinal axis (73) thereof inside the valve pressure chamber (77). Said sealing surface (81) of the valve member (72) cooperates with a valve seat (79) that runs perpendicular to the longitudinal axis (73) thereof so as to at least largely close an opening (78) which is surrounded by the valve seat (79) relative to the valve pressure chamber (77). A connection (64) to a low-pressure area lies immediately next to said opening (78).

Abstract: A fuel injection valve includes a body having a high pressure fuel passage and a nozzle hole, which is connected to the passage, a nozzle needle opening/closing the hole and having a needle piston part, a piezo stack extended when the stack is charged and contracted when the stack discharges electric charge, a cylinder, in which the needle piston part is slidably inserted and which is driven by the stack, a fixed piston having a fixed piston part that is slidably inserted in the cylinder and that has a larger diameter than the needle piston part, an oil-tight chamber between the needle piston part and the fixed piston part in the cylinder, and a nozzle spring urging the needle in a valve closing direction. The cylinder is displaced due to extension/contraction of the stack, so that volume of the chamber increases/decreases and the needle opens/closes the hole.

Abstract: A rotary combustion engine includes a peripheral housing, side housing plates, a piston, and an eccentric shaft, where the triangular piston mounted on the eccentric shaft rotates between the side plates around an epitrochoidal orbit with a long and short axis inside the housing to form three working spaces, where the gas exchange is controlled by an intake port and an exhaust port. Fuel is supplied by an injection nozzle located on the short axis of the peripheral housing, and combustion is initiated by a spark plug located shortly after the injection nozzle in the housing relative to the direction of rotation of the piston. Nozzle bores in the injection nozzle are designed in such a way that, in conjunction with a multi-fuel injection system, they guarantee reliable ignition of the fuel during each cycle.

Abstract: A nozzle for a low pressure fuel injection that improves the control and size of the spray angle, as well as enhances the atomization of the fuel delivered to the cylinder for an engine.

Abstract: A nozzle for a low pressure fuel injection that improves the control and size of the spray angle, as well as enhances the atomization of the fuel delivered to the cylinder for an engine.

Abstract: To provide an injector nozzle that enables the increase in the maximum injection rate of fuel. An injector nozzle 1 has a sac portion 21 for storing a fuel which is formed in a distal end portion of a nozzle body 2 and in which injection holes 11 for injecting the stored fuel are formed; and, a seat portion 22 which is formed at a proximal end side of the sac portion 21 and in which a needle valve 3 for closing the sac portion 21 can be seated. The needle 3 valve has a distal end portion which is tapered towards the distal side and which is formed by cutting off a portion located on the distal side beyond an abutment position where the seat portion can be contacted.

Abstract: A compressed natural gas fuel injector including a housing, an inlet, an outlet, a seat, a closure member, and an attached nozzle. In a preferred embodiment, the inlet and outlet communicate a flow of gaseous fuel regulated by the closure member. The gaseous fuel passes through the seat, which is coupled to a rim surface of a retainer portion of the attached nozzle, and into a flow passage that further communicates the flow of gaseous fuel into one or more flow channels. The orientation of the flow channels within the attached nozzle greatly affects the discharge pattern and mixing characteristics of the gaseous fuel within an intake manifold. A method of flowing gaseous fuel through the fuel injector is also described.

Abstract: A fuel injector includes an orifice disc. The orifice disc includes a peripheral portion, a central portion, and an orifice. The peripheral portion is with respect to a longitudinal axis and extends parallel to a base plane. The peripheral portion bounds the central portion. The central portion includes a facet that extends parallel to a plane that is oblique with respect to the base plane. The orifice penetrates the facet and extends along an orifice axis that is oblique with resect to the plane. As such, the orientation of the orifice with respect to the longitudinal axis is defined by a combination of (1) a first relationship of the plane with respect to the base plane, and (2) a second relationship of the orifice axis with respect to the plane. A method of forming a multi-facetted dimple for the orifice disc is also described.

Abstract: A fuel injector for fuel-injection systems of internal combustion engines includes a solenoid coil, a valve needle that is in operative connection with the solenoid coil and acted upon by a restoring spring in a closing direction in order to actuate a valve-closure member which forms a sealing seat together with a valve-seat surface formed at a valve-seat member, and at least two spray-discharge orifices, which are formed in the valve-seat member. In a discharge region, the spray-discharge orifices are in connection with capillaries formed in the end face of the valve-seat member.

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: Fuel nozzles including a fuel conduit supply having at least one pilot cavity and at least one main cavity, and a distributor ring having at least one injection post extending outwardly therefrom, the distributor ring operably coupled to each of the at least one pilot cavity and at least one main cavity wherein the nozzle is fabricated using metal injection molding.

Abstract: A fuel injector for an internal combustion engine comprising a nozzle body defining a nozzle bore and an outer valve needle that is slideably positioned within the nozzle bore. The outer valve needle is engageable fluidtightly with a valve seat provided on an internal surface of the nozzle bore, in order to control fuel delivery through at least one upper spray hole that is positioned so as to provide a flow path through the wall of the nozzle body. The upper spray hole has a hole entry positioned on an internal surface of the nozzle body and a hole exit positioned on an external surface of the nozzle body. The outer valve needle is provided with a bore, within which an inner valve needle is slideably positioned. The tip of the inner valve needle is engageable fluidtightly with a valve seat in order to control fuel delivery through at least one axial spray hole (19) that is aligned substantially parallel to the longitudinal axis of the injector nozzle.

Abstract: A heating time period is decreased by that a valve body including a hollow valve shaft is arranged in a slidable manner in a cylindrical part of a casing on which a nozzle body with a valve seat is mounted at a front end thereof, a fuel is introduced from a fuel outlet port opening on a shaft wall of the valve shaft into a fuel path formed by the valve shaft and the cylindrical part, the fuel is heated to be injected from the nozzle body by a heater arranged at an outside of the fuel path of the cylindrical part, and a sleeve is mounted in the fuel path so that a large diameter part thereof closes the fuel path at an upper area of the fuel outlet port, while a fuel inlet port is formed on a small diameter part of the sleeve to introduce the fuel into the fuel path, so that the fuel path is narrowed to decrease an amount of the fuel to be heated by the heater.

Abstract: A valve body surrounds a first passage connecting with a cylinder of an engine. A valve member is adapted to be seated on and lifted from the valve seat. An injector body connects with the valve body. The injector body has a pressure control chamber for controlling hydraulic pressure applied to the valve member thereby controlling a lift of the valve member. The injector body has a second passage through which fuel in the pressure control chamber is exhausted. An actuator is adapted to communicating the pressure control chamber with the first passage through the second passage and blocking the pressure control chamber from the first passage. The first passage introduces fuel from the pressure control chamber into the cylinder through the second passage.

Abstract: An orifice disc for a fuel injector includes two orifices that provide a desired interaction between two fuel flows to increase fuel atomization and improve combustion performance. The orifice disc includes a first orifice and a second orifice that are disposed at an interaction angle relative to each other. The orifices are orientated relative to each other such that fuel flow exiting the outlets impinges on each other to further reduce the size of fuel droplets. Large dramatic changes in momentum caused by the impingement of fuel flows disintegrates fuel droplets into much smaller finer fuel droplets that provided enhanced atomization.

Abstract: A fluid injection valve has: a valve body that is provided with an opening portion at one axial end thereof and is for starting and stopping a supply of a fluid out of the opening portion; and an injection port plate having a plurality of injection ports that penetrate therethrough, the injection port plate being fixed on the one axial end of the valve body to form a fluid chamber between itself and the valve body to accumulate the fluid therein and to which at least a part of the injection ports opens. A circumferential surface of the fluid chamber recedes toward the injection ports so as to decrease a cross-sectional area of the fluid chamber that is taken along a radial direction of the injection port plate and to reserve a predetermined length of distance between itself and the injection ports.

Abstract: A fuel delivery system for an internal combustion engine includes induction conduits of effectively equal flow resistance for guiding separate air and fuel streams to each of the cylinders of the engine. Each induction conduit includes at its entrance a sleeve venturi for inducing fuel into the air stream and a booster venturi. A fuel injector applies fuel at high pressure to the booster venturi. Flow modifiers may be positioned in the venturi throat and down stream of the venturi for modifying the flow of the stream of air after the fluid has been induced and injected into the stream of air for further subdividing the fuel vapor for increased effect of combustion of the fuel and air mixture.

Abstract: A fuel injection valve in which, even in an engine in which a fuel containing many foreign matters is used, pinching of solid foreign matters, such as impurities, dirt and dust, and combustion residues, in a sliding part on the outer periphery of a needle valve, the tip of the needle valve, and a seat of a nozzle tip, malfunction an seizure of the needle valve due to such containing, and poor combustion due to irregular injection are prevented from occurring. The fuel injection valve has a first groove cut in the periphery surface of the needle valve and the second grooves cut in a seat surface of the nozzle tip. The first groove is provided so that the needle valve is rotated by flow of the fuel in the first groove caused by reciprocating motion of the needle valve, and the upper and lower ends of the first groove are opened to the outside so that a part of fuel can be introduced in to the groove.

Abstract: A fuel injection valve is provided in which a funnel-shaped fuel collecting depression (35) is provided between a valve seat (8) and an outlet hole (7) of a valve seat member (3), the depression (35) collecting fuel that has passed through the valve seat (8) and guiding it to the outlet hole (7), and a flat fuel diffusion chamber (36) for radially outwardly diffusing fuel that has passed through the outlet hole (7) and guiding it to a plurality of fuel injection holes (11) is provided between opposing faces of the valve seat member (3) and an injector plate (10), an inner peripheral face (7A) of the outlet hole (7) being formed along a curved face on the inner peripheral side of a virtual torus (T) so that the inner peripheral face (7A) is continuous with the base of the fuel collecting depression (35) and the roof of the fuel diffusion chamber (36).

Abstract: A valve (10) is described for use in oil injection of an oil mist (8) for lubricating/flushing cylinders in large engines and arranged with mounting means (14) for fastening in a cylinder wall (2) with a valve stem (12, 13) extending through the cylinder wall and with a nozzle outlet (6) at the inner end of the valve stem. A valve is made, the spray direction of which may be adjusted after mounting. Therefore, the valve is peculiar in that the nozzle outlet (6) is disposed in the inner valve stem part (13) which is rotatable relative to an outer valve stem part (12) . The outer valve stem part (12) is fastened to or made as an integral part of the mounting means (14).

Abstract: An improved fuel injection spray director plate including conically chamfered entries to the flow passages through the plate. The conical chamfer may extend part way or all the way through the plate. In a currently preferred embodiment, the chamfer extends only part way through the plate, and the remaining cylindrical portion of the passage provides desirable directional capability for the spray. Preferably, the conical chamfer axis forms an angle with the cylindrical portion axis. Preferably, a flow passage is positioned in the director plate such that the main flow direction of fuel exiting the fuel injector valve is received into the chamfer of the passage. Preferably, a second conical portion is formed in the passage between the first conical portion and the cylindrical portion.

Abstract: This invention relates to the injection of compressible gaseous fuel directly into the combustion chamber of a reciprocating piston-type internal combustion engine. In particular, the invention provides apparatus and methods for low-pressure, high-speed direct injection of compressed natural gas into a combustion chamber of an engine. Using the present invention, relatively low intake pressures of about 50 to about 150 PSIG yield high-speed (sonic and supersonic) gas flow through the diverging nozzle portion for injection into the combustion chamber. Preferably, the gas reaches supersonic velocity, approaching Mach 1.5 to 2.5.

Abstract: A fuel jet adjusting plate has first nozzle holes arranged along a first circle coaxial with a central axis of a valve body and second nozzle holes arranged along a second circle coaxial with the central axis and having a diameter larger that the first circle. The second nozzle holes have an opening area smaller than that of the first nozzle holes.