Abstract: The present specification generally relates to improvements to combustors such as burners and engines. In one aspect, the specification presents an acoustically enhanced ejector system which can be used as part of an intake system for a combustor. In another aspect, the specification teaches the use of a combustor combustion chamber as an oscillator to magnify a harmonic frequency of a pulsating frequency of the combustor. In still other aspects, the specification presents a combustion chamber having an inlet with a plurality of tangentially spaced apertures, and an in-line intake system connected to the apertures.

Abstract: The invention relates to a tool for the electrochemical machining of a fuel injection device, the tool comprising an electrode holder and an electrode element which forms a cathode during the machining operation in order to be able to electrochemically remove material from the fuel injection device in a machining region. The electrode element is arranged in such a way that it can be displaced in relation to the electrode holder.

Abstract: A fuel injection valve includes a housing having a wall surface on an opposite side of the nozzle hole. A fuel passage opens in the wall surface, and communicates with a nozzle hole through a nozzle cavity. The nozzle cavity accommodates a valve element. A cylinder is substantially in contact with the wall surface at one end, and slidably accommodating one end of the valve element. The cylinder partitions the nozzle cavity substantially into a fuel accumulator chamber and a pressure control chamber. The fuel accumulator chamber accumulates fuel supplied from the fuel passage. The pressure control chamber accumulates fuel for manipulating the valve element. The cylinder has an outer wall defining a deflecting surface for radially outwardly deflecting fuel flowing from the fuel passage.

Abstract: A method of manufacturing a fuel injector having high-flow orifices in its tip includes removing a bulb from a fuel injector tip having at least one spray orifice with a first diameter, and friction welding a slug to the fuel injector tip, including forming a fused interface of material of the slug and material of the fuel injector tip. The method further includes modifying the slug subsequent to friction welding the slug to the fuel injector tip, including forming a new bulb from the slug having at least one spray orifice therein with a different diameter than that of the removed bulb. A remanufactured fuel injector, and fuel injector tip, includes an injector tip body having a first tip portion of a first material and a second tip portion of a material compatible for friction welding with the first material.

Abstract: The present invention is directed towards a vehicular fuel delivery system. In accordance with one exemplary embodiment of the invention, the fuel delivery system includes a fuel rail having at least one feed, and at least one fuel injector assembly comprising a fuel injector and an outer housing. In accordance with this embodiment of the invention, the fuel injector assembly is permanently affixed to the fuel rail so that the feed of the fuel rail is in fluid communication with an inlet of the fuel injector, wherein at least a portion of the fuel injector assembly is configured to be replaceable.

Abstract: An injector, in particular an injector for a combustion engine, includes at least one nozzle module which has an injection nozzle and a supply line for a fluid under a supply pressure, and a valve-control module, which is in operative connection with the nozzle module, and at least one valve-closure member on which the supply pressure acts, and includes a piezoelectric actuator which is used to activate the valve-closure member and which is prestressed by a spring in the direction facing away from the valve-closure member, the piezoelectric actuator being activated by a valve-control unit which specifies a control gradient. The control gradient is a variable that is dependent upon the supply pressure.

Abstract: A fuel injector (1), in particular a pump-nozzle injector for a diesel engine has an injector body (50), which is held in place with a nozzle body (40) and/or a lower body (60) by a clamping nut (10, 30). The fuel supply conduit of the injector body (50) is provided with a fuel filter (20), which is offset in the longitudinal direction of the fuel injector (1) in relation to the clamping nut (10, 30) and is configured independently of said clamping nut (10, 30) on the fuel injector (1).

Abstract: A fuel adjustment and filtering device for a high-pressure pump of a fuel injection system, the device comprising at least one filter, comprising a removable filter cartridge, comprising a filtering body, housed within a filter casing; a shut-off solenoid valve for metering fuel; and, a pressure control valve for the fuel. The solenoid valve and pressure control valve are housed in a block separate from the pump. In one embodiment, in which the pressure control valve is optional, the solenoid valve may be mounted on the filter casing.

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: An injector has the solenoid valve including a solenoid coil, a stator, a stopper, a housing, a terminal, and a bush. The stator has the solenoid coil therein, and attracts an armature to one side in an axial direction of the armature upon energization of the solenoid coil. The stator is on the one side of the armature. The stopper restricts an amount of displacement of the armature toward the stator. The housing is on the one side of the stator. The terminal is inserted in the housing, and electrically connected to the solenoid coil. The bush is received by the housing, and insulates the terminal from the housing. The bush is forcibly inserted into an attachment hole, which is formed in the housing.

Abstract: Hydraulically driven pump-injector for internal combustion engines primarily for diesels, wherein in order to considerably increase the pressure multiplication coefficient for achieving super-high injection pressures (2500 Bar and higher) and decreasing the pump-injector diameter or reducing the pressure of the actuating fluid, a multistage pressure intensifier is installed in the pump-injector, comprising a tandem of successive stages, each stage comprising an intermediate piston (3), above which a working cavity (12) is formed, to which the actuating fluid is expulsed by a pushrod (4) driven by the previous piston.

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 for injecting a fluid, in particular a fuel, performs the following steps: A nozzle (1) which can be actuated by a piezo element (5) is provided. A current pulse (12a) is supplied to the piezo element (5). The capacity (16) of the piezo element (5) is recorded at the time when the current pulse (12a) is supplied. An actual characteristic curve of the injection is recorded based on the capacity (16). The current pulse (12a) is regulated in order to optimize the injection based on the actual characteristic curve of the injection.

Abstract: An improved injector which mixes a secondary fluid into a carrier fluid stream has (a) a body for directing the flow of the carrier fluid, this body having an internal wall forming a flow passage therethrough, a central axis, an inlet, an outlet, and a port for receiving the secondary fluid that is mixed with the carrier fluid, (b) a ramp-like restriction portion which is located downstream of the body's inlet and upstream of the secondary fluid port and configured so as to decrease the effective cross-sectional area of the flow passage in the direction of the flow of the carrier fluid, (c) a ramp-like expansion portion which is located downstream of the secondary fluid port and upstream of the body's outlet and configured so as to increase the effective cross-sectional area of the flow passage in the direction of the flow of the carrier fluid, (d) a throat portion which is situated between the restriction and expansion portions, and (e) a cavity in the throat that extends from its internal wall and into the

Abstract: A fuel injection device for internal combustion engines, having a control valve located between high-pressure and low-pressure sides and which opens or blocks the communication of a control chamber with the low-pressure side, and an outlet throttle located between the control valve and the low-pressure side, the control valve having a first valve position, in which the communication of the control chamber with the low-pressure side is blocked, a second valve position, in which the control chamber communicates with the low-pressure side via a first outlet conduit, and a third valve position, in which the control chamber communicates with the low-pressure side via a second outlet conduit having an outlet throttle.

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 injection valve for internal combustion engines, having a valve body (1) in which a bore (3) is embodied that is defined on its end toward the combustion chamber by a valve seat (18) at which at least one injection opening (20) originates. The hollow valve needle (8) is located longitudinally displaceably in the bore (3) and has a valve sealing face (35) on its end oriented toward the valve seat (18). A first sealing region (31; 34) and a second sealing region (32; 46; 48) are embodied on the valve sealing face (35), and upon contact of the hollow valve needle (8) with the valve seat (18), the first sealing region (31; 34) upstream of the at least one injection opening (20) and the second sealing region (32; 46; 48) downstream of that injection opening effect sealing between the valve sealing face (35) and the valve seat (18) (FIG. 1).

Abstract: A fuel injection device for fuel injection systems, e.g. for aircraft gas turbines, includes at least one fuel injection opening, through which a continuous flow of fuel 1 is issued, with the fuel injection opening having a non-circular cross-section.

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 with a pressure booster supplied with fuel at high pressure. A work chamber of the pressure booster is separated from a differential pressure chamber via a booster piston. The pressure relief and the subjection to pressure of the differential pressure chamber are effected via a switching valve which communicates with the differential pressure chamber via a control line. A pressure chamber on an injection valve member communicates with a compression chamber of the pressure booster via a pressure chamber supply line. The switching valve is embodied as a direct-switching 3/2-way valve, whose valve needle is pressure-balanced and has both a sliding seat and a slide seal.

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: An actuator for a fuel injector is disclosed. The actuator has a piezo element, a casing, and at least one end plate. The casing is fabricated through a deep draw process, has bellows, and is configured to house the piezo element. The at least one end plate is hermetically connected to an end portion of the casing.

Abstract: A fluid injection device including a protruding needle. One end of the needle forms a valve and can be moved between a closed position, in which the valve seals the fluid-release opening, and an open position, in which the valve is positioned at a controlled distance from the opening. Movement of the valve between the closed position and the open position is produced by the controlled intrinsic extension of the protruding needle.

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: A fuel injector for injecting fuel that is at high pressure into a combustion chamber of an internal combustion engine has an injection valve member triggered by an actuator and a coupler chamber; the actuator acts on the injection valve member and the injection valve member opens or closes at least one injection opening. The coupler chamber is located on the side of the actuator diametrically opposite the injection valve member; and the coupler chamber is filled with fuel that is at system pressure when the injection opening is closed.

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 injection valve includes a fuel injection port, a needle for cutting the fuel flow into the fuel injection port and a needle mover for moving the needle away from the fuel injection port and allowing the fuel to flow into the fuel injection port. When the needle is moved away from the fuel injection port by the needle mover, the force is applied by a force applicator to the needle away from the fuel injection port only during the period when the needle is moved away from the fuel injection port to less than a predetermined degree.

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

Abstract: A fuel injection method is provided for correcting the fuel injection amount accurately by eliminating offset components when detecting a current flowing through a solenoid for fuel injection. A current component, which is detected during normal running and a drive current flowing through the solenoid for fuel injection is OFF (Step 11), is input to an A/D converter that stores the value thereof (Step 12). Thereafter, the drive current is turned ON (Step S13), elapse of a fixed time period is waited (Step S14), and an input voltage of the A/D converter is detected (Step S15). A difference current (offset component) is calculated by subtracting the offset voltage from the input voltage (Step S16), and a current span is adjusted based on a span correction factor (Step S17). Thereafter, a pulse width current correction factor is calculated (Step S2a) and, based on the pulse width current correction factor, a drive pulse width is calculated (Step S2b) and provided to the solenoid.

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 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, at least two metering orifices, and at least one flow channel. The at least two metering orifices are generally located along an axis extending radially away from the longitudinal axis and radially outward of the seat orifice. Each of the metering orifices has a center defined by the interior surface of the metering orifice extending through the disc. The at least one flow channel extends radially away from the longitudinal axis towards each of the at least two metering orifices. And a method of atomizing fuel is also described.

Abstract: A control system for a fuel injector is disclosed. The control system has a nozzle member with at least one orifice, and a needle check valve. The needle check valve is recipratingly disposed to open and close the at least one orifice. The control system also has a control chamber located at the base end of the needle check valve, and a control valve movable to selectively drain and fill the control chamber. The control system further has an injector body, a first piston located within the injector body, and a second piston located within the injector body. The first piston is operatively connected to the control valve to move the control valve. The second piston is located a distance from the first piston to form a coupling chamber. The control system additionally has a partial-ball check valve associated with the coupling chamber to selectively replenish the coupling chamber.

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 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: 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 valve back pressure chamber is provided to exert a back pressure of a first valve needle. Furthermore, a hydraulic pressure passage is provided to extend through the valve back pressure chamber. A valve body is provided to a second valve needle and is driven to connect and disconnect between the hydraulic pressure passage and a fuel tank and thereby to drive the first valve needle. The second valve needle is driven by hydraulic pressure induced by an actuator.

Abstract: A fuel injection system includes (i) an injector for injecting gaseous fuel and liquid fuel into a cylinder of an internal combustion engine, (ii) a gaseous fuel supplying unit having a gaseous feel tank as a first high-pressure accumulating source for pressurizing gaseous fuel, (iii) a liquid fuel supplying unit having a common rail as a second high-pressure accumulating source for pressurizing liquid fuel; (iv) a fuel pump as a pressure feeding unit that pressure feeds liquid fuel to the common rail; and (v) a compressor as a pressure increasing unit, which is operated under pressure of the pressurized gaseous fuel to increase pressure of liquid fuel pressure fed from the fuel pump.

Abstract: A common rail fuel injector comprises a three-way control valve that controls the flow of high-pressure fuel to a fuel cavity for fuel injection. Specifically, when the control valve is transitioning to a first, on position, from a second, off position, high-pressure fuel is provided to both the fuel cavity and to a check control cavity, thereby preventing fuel injection until the control valve seats in the first, on position. Once seated in the first, on position, the control valve only provides high-pressure fuel to the fuel cavity allowing fuel injection to occur. To stop injection, the control valve is moved from the first, on position to the second, closed position. Once again, while the control valve is in the transition location between the two positions, high-pressure fuel is provided to both the fuel cavity and to the check control cavity thereby terminating injection.

Abstract: A fuel injector includes a valve seat member formed with a valve seat and a valve element including an abutting portion to abut on an abutting portion of the valve seat. One of the abutting portions of the valve seat and the valve element includes a surface layer which is softened by heat treatment, and which is pressed by abutment between the valve seat and the valve element.

Abstract: A fluid-injecting system includes a nozzle assembly which includes a housing defining an outlet cooling passage, an outlet control passage, at least one inlet supply passageway, and an injection orifice. The nozzle assembly also includes a shaft disposed within the housing and movable between a closed position and an open position. The fluid-injecting system further includes a first valve in fluid communication with the nozzle assembly configured to regulate the supply of a fluid through the at least one inlet passageway and a second valve in fluid communication with the nozzle assembly to regulate a flow of fluid through the outlet passageway.

Abstract: A fuel injector assembly includes a first coil driven by a direct current driver and a second coil driven by an alternating current driver where both the first coil and the second coil share a common connection to reduce the number of external terminal connections. The second coil generates a second magnetic field that is utilized to heat a component in thermal contact with the fuel flow that in turn heats fuel before exiting the fuel injector.

Abstract: A fuel injector assembly includes a first coil that induces a time varying magnetic field into a second coil that is utilized to heat fuel flowing through the fuel injector. A first coil receives a first signal from a driver to generate a first magnetic field that moves an armature between an open and closed position. The second coil generates a second magnetic field generated by a current induced by the first coil into the second coil. The induced current is generated by an alternating current signal that is interposed onto a direct current signal sent to the first coil. The alternating current signal produces a time varying second magnetic field that induces heating of a magnetically active component with the fuel flow that in turn heats the fuel.

Abstract: In a fuel injector (1) configured so that fuel injection is controlled by a solenoid valve (4), the solenoid valve (4) comprises an electromagnet (43), an armature bolt (41) that has a ball (42) and a plate member (41A) attached thereto and is spring-biased in the valve closing direction by a spring member (48), a stopper member (49) that limits movement of the plate member (41A) in order to limit the maximum stroke of the ball (42) and an armature plate (44) through which the armature bolt (41) passes and which collaborates with the solenoid valve (4), the contact area (S2) between the armature plate (44) and the plate member (41A) being made larger than the contact area (S1) between the plate member (41A) and the stopper member (49).

Abstract: The invention relates to a device for injecting fuel into a combustion chamber of an internal combustion engine, and which includes a fuel injector which can be acted upon by fuel at high pressure via a high-pressure source and is actuatable via a metering valve. Associated with the injection valve member is a damping element, which is movable independently of it and defines a damping chamber. The damping element has at least one overflow conduit for connecting the damping chamber to a further hydraulic chamber.

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: An electronic high frequency induction heater driver, for a variable spray fuel injection system, uses a zero-voltage switching oscillator that is impedance coupled to an imbedded multiple function signal separator and integrated with a conventionally implemented electronic fuel injector driver. The induction heater driver, upon receipt of a turn-on signal, multiplies a supply voltage through a self-oscillating series resonance, and couples the high frequency energy to a high pass filter such that the useful energy is utilized in an appropriate loss component so that fuel inside a fuel component is heated to a desired temperature.

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.