Abstract: A fuel injector is described. The fuel injector includes an inlet, outlet, seat, closure member, and a metering orifice disc. The metering orifice disc is disposed between the seat and the outlet. The metering orifice disc includes: a generally planar surface, a plurality of metering orifices that extends through the generally planar surface, the metering orifices being located radially outward of the seat orifice; and at least one flow channel having a cross-sectional area that decreases in magnitude starting at a location spaced from the longitudinal axis to proximate a perimeter of a metering orifice. A seat subassembly and a metering orifice disc are described. And a method of atomizing fuel is also described.

Abstract: A direct injection fuel injector includes a nozzle tip having a plurality of passages allowing fluid communication between an inner nozzle tip surface portion and an outer nozzle tip surface portion and directly into a combustion chamber of an internal combustion engine. A first group of the passages have inner surface apertures located substantially in a first common plane. A second group of the passages have inner surface apertures located substantially in at least a second common plane substantially parallel to the first common plane. The second group has more passages than the first group.

Abstract: The injector includes a nozzle, a needle, a control chamber, a working fluid supply passage, an electric switching valve, a high-pressure gaseous fuel supply passage and a lubrication liquid fuel supply passage. The nozzle has an injection hole, through which high-pressure gaseous fuel is injected. The needle is axially reciprocably received in the nozzle to open and close the injection hole. The needle includes a sliding portion and a valve portion. The control chamber applies a pressure to the needle. The working fluid supply passage supplies liquid fuel to the control chamber. The electric switching valve controls an inflow/outflow of the liquid fuel to/from the control chamber. The high-pressure gaseous fuel supply passage supplies the high-pressure gaseous fuel to the injection hole. The lubrication liquid fuel supply passage supplies the liquid fuel from the working fluid supply passage to the sliding portion and the valve portion.

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

Abstract: A fuel injector having an injection nozzle; an injection valve having a movable pin for regulating fuel flow through the injection nozzle; an electromagnetic actuator for moving the pin between a closed position and an open position respectively closing and opening the injection valve; and a tubular supporting body, which has a central channel for feeding pressurized fuel to the injection nozzle, and houses the electromagnetic actuator, the injection valve, and the pin; the supporting body is formed by joining a one-piece tubular top member housing the electromagnetic actuator and made of high-tensile steel with poor magnetic characteristics, and a one-piece tubular bottom member housing the injection valve and made of a low-thermal-expansion alloy.

Abstract: A fuel injection valve is provided that includes a valve seat member (3) having provided therein a conical valve seat (8) and a valve seat hole (7) communicating with the downstream end of the valve seat (8), a flat fuel diffusion chamber (43) radially extending from the valve seat hole (7), the fuel diffusion chamber (43) being formed between the valve seat member (3) and an injector plate (10), and a plurality of fuel injection holes (11) bored in the injector plate (10) so as to open in the fuel diffusion chamber (43), wherein the fuel injection holes (11) are arranged so as to be radially outwardly separated from the valve seat hole (7), and when the height of the fuel diffusion chamber (43) is t1 and the length of the valve seat hole (7) is t2, t2/t1?2.

Abstract: The invention disclosed a mixed-mode fuel injector with micro-variable-circular-orifice (MVCO), which is a fuel injection device for internal combustion engines, either diesel or gasoline engines. The fuel injector is a high-accuracy couple of components comprising a needle valve (1) and a nozzle body (5). Said needle valve is movable back and forth and received in said nozzle body to provide an opening position for fuel injection and a biased closing position. Said nozzle body has multiple-micro-channels (6) on the inner conical surface (C) close to the tip of the nozzle body. The injector has a MVCO (4) comprising a micro-variable-circular aperture and multiple-micro-channels, and has means of generating variable mixed-mode sprays of conical and multi-jet shapes, with a major homogeneous conical spray at low to medium injection loads.

Abstract: The housing body (14) of the fuel injection valve comprises a recess (108), the end region of said recess having a conical tapering (110) on the bottom side thereof. The supporting body (48) engages in said conical tapering (110) with a projection (116) also comprising a conical end region (118). The closing spring (40) is supported on the needle-shaped injection valve member (34) on one side, and on the guiding sleeve (38) on the other side. The guiding sleeve (38) is supported on the supporting body (48) with the front side (461) thereof, whereby the supporting body is held against the tapering (110) in a sealing manner, under the force exerted by the closing spring (40).

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: An injection nozzle for an internal combustion engine, the injection nozzle including an outer valve needle which is engageable with an outer valve seating so as to control injection through a first nozzle outlet, an inner valve needle which is movable within the outer valve needle and engageable with an inner valve seating so as to control injection through a second nozzle outlet, and a coupling arrangement for coupling movement of the outer valve needle to the inner valve needle in circumstances in which the outer valve needle is moved away from the outer valve seating beyond a predetermined amount, thereby to permit fuel injection through both the first and second nozzle outlets.

Abstract: The present invention relates to a fuel injection system for a combustion engine. The system comprises a source of fuel, an injector and a means for delivering pressurized fuel strokes to said injector, said injector being arranged for generating at least two fuel jets with different jet parameters at closely adjacent locations and having directions such that the jets interact with each other along a surface interface therebetween so as to generate a fine spray. The jet breakup time is shortened and the droplet size is substantially reduced.

Abstract: An internal combustion engine includes an engine block, at least one combustion cylinder carried by the engine block, and at least one fuel injector. Each fuel injector is associated with a respective combustion cylinder. Each fuel injector includes a plurality of injector nozzles for selectively injecting fuel into a respective combustion cylinder. A single control valve is fluidly coupled with each of the plurality of injector nozzles.

Abstract: The invention relates to a fuel injection valve for internal combustion engines having a valve body in which a blind hole is formed, with at least one injection opening proceeding from said blind hole. A longitudinally displaceable needle in the valve body has a valve sealing face formed at its end which faces towards the blind hole. The valve sealing face is formed from one or more conical faces, and the valve needle interacting, by means of a body seat, with said valve sealing face to control a fuel flow to the at least one injection opening. A needle tip adjoining the valve sealing face dips into the blind hole when the valve needle bears against the body seat, the needle tip being curved in a concave fashion directly adjacent to the valve sealing face.

Abstract: The heating injector in which the fuel is heated within a short time when starting and the size of a fuel atomized particle is very small h as casing 10 for a fuel injection valve which supplies fuel to an engine, orifice member 50 with an orifice through which fuel passes, plunger 20 which carries out switching action of orifice, swirl chip 30 which contacts the orifice member and the casing at a plurality of positions, and forms a fuel passage blocked by a plurality of narrow portions and a fuel heating space channel where entrance side was blocked by the narrow portion in the downstream side, and a heater which is arranged between fuel passage forming member and casing and supported by either of the fuel passage forming member or the casing in a plurality of parts in the fuel passage.

Abstract: A fuel injection valve includes a valve seat which has a valve seat surface, an injection nozzle having an inclined axis center, and a conically-shaped tapered surface located between the valve seat surface and the injection nozzle; and a valve element for controlling fuel supply to the injection nozzle. One part of an opening of the injection nozzle is connected to the tapered surface; the other part of the opening is connected to the valve seat surface; and a relationship between an angle ?1 formed by the injection nozzle and the tapered surface at an area where the injection nozzle is connected to the tapered surface side, and an angle ?2 formed by the injection nozzle and the valve seat surface at an area where the injection nozzle is connected to the valve seat surface side is configured to be ?1??2.

Abstract: A fuel injection valve comprises a valve seat, a movable valve element which is seated on or separated from the valve seat, and a nozzle member having a plurality of nozzle holes. At least one of the valve element and valve seat has a curved surface at a contact position where they contact with each other when the valve element is seated on the valve seat. Two or more of the nozzle holes are provided outside an intersection line of a virtual extension surface along a tangential line to the curved surface at the contact position and a surface of the nozzle member.

Abstract: An actuated atomizer is adapted for spray cooling or other applications wherein a well-developed, homogeneous and generally conical spray mist is required. The actuated atomizer includes an outer shell formed by an inner ring; an outer ring; an actuator insert and a cap. A nozzle framework is positioned within the actuator insert. A base of the nozzle framework defines swirl inlets, a swirl chamber and a swirl chamber. A nozzle insert defines a center inlet and feed ports. A spool is positioned within the coil housing, and carries the coil windings having a number of turns calculated to result in a magnetic field of sufficient strength to overcome the bias of the spring. A plunger moves in response to the magnetic field of the windings. A stop prevents the pintle from being withdrawn excessively. A pintle, positioned by the plunger, moves between first and second positions.

Abstract: A fuel injector includes a tube member and a valve element to slide axially in the tube member. The valve element includes a center portion and a plurality of plate portions projecting radially from the center portion, and each including side surfaces extending axially; and a guide section including an outer portion defining a valve seat, and an inner portion which is located on a radial inner side of the outer portion, and which is formed with at least one injection hole. The guide section is arranged to divert the flow of the fuel conveyed along the plate portions, to a radial inward direction toward the injection hole.

Abstract: A fuel injection device for an internal combustion engine includes a housing and at least one valve element which cooperates with a valve seat on an injection end of the housing. A plurality of fuel outlet conduits in the housing are associated with the valve element. In the region of the beginning of the fuel outlet conduits a flow chamber is present which is formed by at least one annular groove that is concentric with the longitudinal axis of the valve element.

Abstract: A method and apparatus for injecting fluid into a machine are disclosed. A fluid injector is disclosed having a nozzle body with at least one fluid injection orifice therein and being configured for transmitting fluid toward the injection orifice. The nozzle body may have a generally curved internal wall at an end portion of the nozzle body. A check member may be movably arranged inside the nozzle body for affecting fluid flow through the injection orifice. The check member may have (i) a recessed region on the surface of the check member and (ii) a generally curved region at an end portion of the check member. The check member may be movable to a flow blocking position in which (i) the check member engages the nozzle body to prevent fluid flow through the injection orifice, (ii) the recessed region is disposed proximate the injection orifice, and (iii) a chamber volume exists between the end portion of the nozzle body and the end portion of the check member.

Abstract: A direct injection fuel injector system includes a fuel injector defining nozzle holes in an optimized cluster configuration. Each hole of a conventional multi-hole nozzle is replaced by two smaller, closely spaced holes in a two-hole-per-cluster configuration. The holes within a cluster are configured one above the other, in two horizontal planes or rows, spaced a distance apart from one another. The distance “d” between the nozzle holes in the cluster configuration, the clustered plume angle “?”, which is the angular separation between the centerlines of the nozzle holes, as well as the included spray angle “?”, are optimized through computational fluid dynamics and combustion modeling so that an optimal compromise can be found between liquid penetration, spray penetration and air entrainment, whereby to minimize soot emissions.

Abstract: A fuel injection valve for internal combustion engines, having a valve body with a bore defined on its end toward the combustion chamber by a conical valve seat, with a valve needle disposed longitudinally displaceably in the bore and a sealing face with two sealing portions on its end toward the combustion chamber with the second conical face being disposed on the combustion chamber side of the first conical face. An annular groove extending between the conical faces has an end facing away from the combustion chamber which acts as a sealing edge upon contact of the valve sealing face with the valve seat. Recesses embodied in the valve seat and/or on the valve sealing face hydraulically connect the annular groove with a portion of the second conical face located on the combustion chamber side of the annular groove.

Abstract: A fuel injector is described. The fuel injector includes an inlet, outlet, seat, closure member, and a metering orifice disc. The metering orifice disc is disposed between the seat and the outlet. The metering orifice disc includes an outer wall having a surface that defines first and second outer chords generally about the longitudinal axis A-A. The first outer chord intersects the second chord and has a length different than the length of the second outer chord. The metering orifice disc includes an inner wall having a surface that defines first and second inner chords. The first and second inner chords extend generally transverse to the longitudinal axis A-A. The first inner chord intersects the second inner chord. The first inner chord has a length different than the length of the second inner chord. Methods of atomization and targeting are also described.

Abstract: In a fuel injection valve in which a funnel-shaped fuel collecting recess 35 is provided between a valve seat 8 and an outlet hole 7, and a flat fuel diffusion chamber 36 which diffuses a fuel radially outward and guides the fuel to a plurality of fuel injection holes 11 is provided between opposed surfaces of a valve seat member 3 and an injector plate 10, a seating portion 16a having a spherical band shape, and a valve tip end portion 16b which projects into a cone shape toward a center of the outlet hole 7 from the seating portion 16a and leaves its top portion in the outlet hole 7 even at the time of valve opening of a valve body 18 are formed at the valve body 18, a cone angle ? of the valve tip end portion 16b is set to be larger than a funnel angle ? of the fuel collecting recess 35, and an inner peripheral surface 7A of the outlet hole 7 is formed along an inner peripheral side curved surface of a virtual torus T so that the inner peripheral surface is connected to a bottom surface of the fuel collect

Abstract: In a fuel injection valve for slanted fuel injection, provided between a conical flow path and an injection port is an intermediate flow path having a cylindrical surface coaxial to the conical flow path, so that the injection port has a portion of the cylindrical surface connected to the conical surface of the conical flow path and another portion of the cylindrical surface connected to the cylindrical surface of the intermediate flow path, whereby generation of stagnation of flow of fuel is suppressed to decrease the formation of the carbon deposit. The intermediate flow path has a tapered conical surface that is connected to a downstream side end portion of said cylindrical surface and that includes a diameter gradually decreases in the direction of flow of fuel to cope with where the injection port diameter is small. A cone apex angle of the conical surface of the intermediate flow path is smaller than a cone apex angle of the valve seat surface.

Abstract: A fuel injector has a plunger for opening/closing a fuel path to control the amount of fuel to be injected; a seat portion for the plunger; and a plurality of nozzle holes for injecting fuel passed through between the plunger and the seat portion, A nozzle plate is provided with the seat portion, and a taper-fuel inlet hole has a diameter that gradually reduces from the seat toward its outlet, An orifice plate is arranged downstream from the taper-fuel inlet hole, and is provided with a concave portion opposite to the nozzle plate, with a plurality of nozzle holes being formed concentrically at a bottom of the concave portion. Each nozzle hole has an inclined angle in the direction of the plate thickness within the concave area.

Abstract: A fuel injector for an internal combustion engine, including a housing, a homogeneous member defining a continuous wall having a seat portion and a guide portion, a closure member, and a metering disk. The housing includes an inlet and an outlet disposed along a longitudinal axis. The homogeneous member is disposed proximate the outlet. The seat portion includes a sealing surface and a seat orifice. The closure member is disposed in the housing and positioned by the guide portion for reciprocal motion along the longitudinal axis between a first position such that the closure member is displaced from the seat, allowing fuel flow past the closure member, and a second position such that the closure member is contiguous the seat, precluding fuel flow past the closure member. The metering disk is proximate the seat orifice.

Abstract: An engine ECU executes a program including the steps of: detecting an accelerator position; calculating a load factor KL of an engine based on the accelerator position or the like; when the engine is in a high load region, raising a pressure of fuel supplied to an in-cylinder injector and increasing a degree of opening of a throttle valve and/or increasing a lift amount of an intake valve; and when the engine is not in the high load region, lowering the pressure of the fuel supplied to the in-cylinder injector and decreasing the degree of opening of the throttle valve and/or decreasing the lift amount of the intake valve.

Abstract: The present invention relates to an injection nozzle (1) for an internal combustion engine, in particular in a motor vehicle. A first nozzle needle (3) controls at least one first injection opening (5). A second nozzle needle (4) controls at least one second injection opening (6). A control chamber (32) is connected via a throttle line (35) to a pressure chamber (34) in which it is possible to adjust the injection pressure. A first control piston (41) cooperates with a first needle unit (17) that includes the first nozzle needle (3) and the first control surface (43) of this first control piston (41) can be acted on by the control pressure prevailing in the control chamber (32). In the closed position of the first nozzle needle (3), there is an axial play (44) between the first control piston (41) and the first needle unit (17).

Abstract: A compressed natural gas fuel injector having a housing, an inlet, an outlet, a seat, a closure member, and an internally mounted 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 secured to a rim surface of a retainer portion of the internally mounted 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 internally mounted 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 is described that includes a polymeric housing, pole piece, filter assembly, coil assembly, spring member, armature assembly and metering assembly. The polymeric housing has a passageway extending between an inlet and an outlet along a longitudinal axis. The pole piece is disposed in the passageway. The metering assembly is secured to the polymeric housing proximate the outlet. The metering assembly has a seat molded to a polymeric support member via at least one annular ridge. A method of making a metering assembly is described.

Abstract: A fuel injection device includes at least two valve elements, disposed in a housing and coaxial with one another, with at least one fuel outlet opening associated with each valve element. On the outer valve element, radially outward from the at least one fuel outlet opening associated with it, there is a first sealing edge which cooperates with a valve seat on the housing and can separate the at least one fuel outlet opening from a high-pressure connection. An additional sealing edge is provided on the outer valve element, between the at least one fuel outlet opening associated with it and the inner valve element.

Abstract: The invention provides an injection nozzle for an internal combustion engine, the injection nozzle (2) including an outer valve member (8) received within a bore (6) provided in a nozzle body (4) and being engageable with a first seating region (20) to control fuel flow from a first delivery chamber (32) to a first nozzle outlet (22), an inner valve member (44) slidable within an outer valve bore (34) provided in the outer valve member (8) and being engageable with a second seating region (46) to control fuel flow from a second delivery chamber (62) to a second nozzle outlet (48), a lifting arrangement (80) associated with the outer valve member (8) such that movement of the outer valve member (8) is transmitted to the inner valve member (44) when the outer valve member (8) is moved through a distance greater than a predetermined distance (L), and a control chamber (7) arranged to receive pressurised fuel, in use.

Abstract: A fuel injector is described that includes a polymeric housing, pole piece, filter assembly, coil assembly, spring member, armature assembly and metering assembly. The polymeric housing has a passageway extending between an inlet and an outlet along a longitudinal axis. The pole piece is disposed in the passageway, the pole piece having a through opening. The filter assembly has a portion disposed in the through opening of the pole piece. The coil assembly is disposed in the polymeric housing to surround the pole piece. The spring member is disposed partly in the pole piece and including a spring portion contiguous with the portion of the filter assembly. The armature assembly is disposed in the passageway in a first position having a first portion confronting the pole piece and in a second position having a closure member contiguous to an end face of the pole piece. The metering assembly is secured to the polymeric housing proximate the outlet.

Abstract: A needle valve 20 having a seat contact section 24 at a leading end is provided. A nozzle body 22 having a seat section 26 with which the seat contact section 24 comes into contact is provided. The nozzle body 22 comprises a tapered surface 34, which includes the seat section 26, and a fuel receiver section 28, which includes a spherically shaped sack wall surface 36. The leading end of the needle valve 20 comprises a first protrusion 38, which is tapered to have a greater taper angle than the tapered surface 34, and a second protrusion 40, which is tapered to have a smaller taper angle than the first protrusion 38. More specifically, the second protrusion 40 is conically shaped.

Abstract: A fuel injector for fuel-injection systems of internal combustion engines has a solenoid coil; a valve needle that is operatively connected to the solenoid coil and acted upon by a restoring spring in a closing direction, in order to actuate a valve-closure member which, together with a valve-seat surface formed at a valve-seat member, forms a sealing seat; and at least two spray-discharge orifices which are formed in the valve-seat member. The spray-discharge orifices are formed in the valve-seat member in such a way that they are shielded from mixture flows circulating in a combustion chamber of the internal combustion engine.

Abstract: Among other aspects shown and described, a fuel supply apparatus that provides multiple fuel spray targeting angles as a function of fuel pressure towards a combustion chamber of an engine to reduce hydrocarbon emission during cold-start or hot-start. A method and fuel system are also shown and described.

Abstract: A dosing device for liquid fuels, in particular for input into a chemical reformer in order to recover hydrogen or into a post-combustion device in order to generate heat, includes at least one metering device for metering fuel into a metering conduit and a nozzle body, adjoining the metering conduit, includes at least one spray discharge opening which opens into a metering chamber, including a nozzle body having a perforated spray insert in which at least one spray discharge opening is disposed.

Abstract: A fuel injector is shown and described. The fuel injector includes an inlet, outlet, seat, closure member, and a metering orifice disc. The metering orifice disc is disposed between the seat and the outlet. The metering orifice disc includes a plurality of metering orifices disposed about the longitudinal axis and a flow channel to each metering orifice disc so that, when the inlet of the fuel injector is provided with a pressurized fluid over a range of pressure from 200 kiloPascals to 600 kiloPascals and the closure member is actuated to the first position, the metering orifice disc provides an atomized fluid having a Sauter-Mean-Diameter of less than 70 microns proximate the outlet of the fuel injector. A method of atomizing is also provided.

Abstract: Using a swirl type fuel injection valve, a concentrated spray area and a thin spray area are formed, the positions thereof are adjusted, and the spray is made to conform to the geometric shape of the engine and mounting position of the fuel injection valve, so as to reduce the fuel consumption and control the unburnt components in exhaust gas. The fuel injection valve is so constructed that a step is formed on the injection hole opening of the fuel injection valve, so as to provide two or more edge transition portions at the injection hole opening, resulting from the step, and the line connecting the edge transition portions forms an oblique angle relative to the wall formed by the step perpendicular to the injection hole center axis and the angled wall.

Abstract: A fuel injector is described that includes a polymeric housing, pole piece, filter assembly, coil assembly, spring member, armature assembly and metering assembly. The polymeric housing has a passageway extending between an inlet and an outlet along a longitudinal axis. The pole piece is disposed in the passageway. The metering assembly is secured to the polymeric housing proximate the outlet. The metering assembly has a guide member to guide a closure member through an aperture and along the longitudinal axis. The guide member may be cup-shaped and include offset apertures to allow fuel to travel along the passageway toward the outlet.

Abstract: A fuel injector is described that includes a polymeric housing, pole piece, filter assembly, coil assembly, spring member, armature assembly and metering assembly. The polymeric housing has a passageway extending between an inlet and an outlet along a longitudinal axis. The pole piece is disposed in the passageway. The metering assembly is secured to the polymeric housing proximate the outlet. The metering assembly has a seat molded to a polymeric support member. The polymeric support member may be cylindrical and bonded to the polymeric bore proximate the outlet. A method of operating the fuel injector is described.

Abstract: A fuel injector is disclosed that includes a valve body with a plurality of nozzle holes for injecting fuel in a hollow spray from the fuel injector. The plurality of nozzle holes each include an outlet. The valve body also includes at least one air-introducing aperture with an air outlet port positioned between the outlets of the plurality of nozzle holes. The air-introducing aperture is operable for introducing air into a hollow area of the hollow spray.

Abstract: A fuel injection valve includes a valve member, a first stop member, a second stop member, a movable core, a fixed core, and a coil. The valve member opens and closes an injection nozzle. The first stop member protrudes radially outward from said valve member. The second stop member protrudes radially outward from said valve member. The movable core is sandwiched between said first and second stop members. The movable core and one of said first and second stop members defines a fuel chamber. The fixed core is axially displaced from said movable core. The coil causes reciprocal axial displacement of said valve member such that said movable core axially reciprocates toward and away from said fixed core therewith.

Abstract: A fuel injector nozzle and method for dispersing fuel during a normal combustion operation and a supplemental combustion operation, the fuel injector nozzle comprising: a plurality of first outlet openings configured to disperse fuel in a first arrangement; and a plurality of second outlet openings configured to collide with the fuel passing through the plurality of first openings to disperse fuel in a second arrangement, wherein either the first or second arrangement is selected by the position of the piston.

Abstract: A fuel injector, in particular for the direct injection of fuel into a combustion chamber of an internal combustion engine, having a valve-closure member which cooperates with a valve-seat surface formed on a valve-seat body, to form a sealing seat, includes at least one spray-discharge orifice provided downstream from the sealing seat. The spray-discharge orifice has a guide region and an exit region arranged at its discharge-side end. The exit region widens in a stepped manner by at least one first step and/or at least in part continuously beginning with a transition from the guide region into the exit region. A fuel jet which emerges from the guide region at the transition and widens essentially uniformly at a jet angle, passes a discharge-side end of the exit region with a gap dimension of a gap after a distance s, the gap dimension being greater than zero and a first volume remaining in the exit region between the fuel jet and the inner walls of the exit region.

Abstract: A pressurized fluid handling nozzle has a body with a first end and a second end, a fluid conduit and a recess at the second end. The first end is configured for connection to a pressurized fluid source. The fluid conduit has an inlet at the first end and an outlet at the recess. The nozzle uses the Bernoulli effect for lifting a part.

Abstract: The invention describes an injector device specifically designed for the injection of an alternative fuel such as LPG, methane, hydrogen or others, in an internal combustion engine. In the injector device, the shutter ensuring sealing in closing condition is separated with respect to the metering means with gauged hole, which perform the function of metering fuel during injection, and it is arranged downstream from said metering means. The shutter is controlled by a solenoid, which is again arranged on the downstream side with respect to said metering means.

Abstract: An apparatus and method for multi-mode fuel injection is disclosed. A sleeve is disposed about a fuel injector tip movable between a first and second position and wherein the sleeve is capable of impinging the fuel spray as it enters into the combustion chamber. By impinging the fuel spray, different spray profiles or plumes can be obtained allowing the fuel injector to inject in different modes, including homogenous charge compression ignition.

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 than that of the first circle. Each hole axis of the second nozzle holes forms an acute angle with a reference plane perpendicular to the central axis of the valve body smaller than that formed by each hole axis of the first nozzle holes with the reference plane. Hence, fuel sprays injected through the first nozzle holes can be directed away from fuel sprays injected through the second nozzle holes. As a result, the fuel sprays injected through the first nozzle holes do not interfere with the fuel sprays injected through the second nozzle holes, which makes it possible to suitably atomize injected fuel.