Class / Patent application number | Description | Number of patent applications / Date published |
239005000 | Of fuel injection | 79 |
20080203183 | METHOD FOR CONTROLLING AN ELECTRICAL ACTUATOR - A method to improve the performance of an electrically controlled actuator is described. The method is capable of improving engine starting during at least some operating conditions. | 08-28-2008 |
20080217421 | Cavitation erosion reduction strategy for valve member and fuel injector utilizing same - A mechanically actuated electronically controlled unit injector includes an electronically controlled spill valve to precisely control timing of fuel pressurization within a fuel pressurization chamber. Cavitation bubbles may be generated in the region of the valve seat when the spill valve member is closed to raise fuel pressure in the fuel injector. This cavitation can cause erosion on the spill valve member and the surrounding injector body. In order to preempt cavitation damage, the valve member may be modified to include a compound annulus that includes a small annulus that corresponds to an identified cavitation damage pattern. Although the generation of cavitation bubbles may continue after such a strategy, cavitation erosion, and the associated liberation of metallic particles into the fuel system can be reduced, and maybe eliminated, by the preemptive cavitation reduction strategy. | 09-11-2008 |
20090255998 | Fuel injection tip - 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. | 10-15-2009 |
20100065652 | FUEL INJECTOR - A fuel injector ( | 03-18-2010 |
20100213270 | METHOD AND DEVICE FOR OPERATING AN INJECTION VALVE, COMPUTER PROGRAM AND INJECTION VALVE - An injection valve has a valve body and a valve pin. The valve body has a metering orifice. In a closed position of the valve pin, the flow of fluid through the metering orifice is disabled and otherwise released. A control signal (ANS | 08-26-2010 |
20100264231 | COUPLING DEVICE - A coupling device for hydraulically and mechanically coupling an injection valve to a fuel rail of a combustion engine, has a fuel injector cup with a central longitudinal axis which can be hydraulically coupled to the fuel rail and at least partially engaged with the fuel inlet tube. The cup has an inner bottom surface facing the valve, a first retaining element fixedly coupled to the cup, a second retaining element fixedly coupled to the valve, wherein the second retaining element is coupled to the first element to prevent a movement of the second element relative to the first element in a first axis direction, and a damper element which is arranged axially between the inner bottom surface of the cup and the inlet tube. The damper element limits a movement of the valve relative to the cup in a second direction of the longitudinal axis opposing the first direction. | 10-21-2010 |
20110042476 | INTEGRATED FUEL INJECTORS AND IGNITERS AND ASSOCIATED METHODS OF USE AND MANUFACTURE - The present disclosure is directed to integrated injector/igniters providing efficient injection, ignition, and complete combustion of various types of fuels. One example of such an injectors/igniter can include a body having a base portion opposite a nozzle portion, and a fuel passageway extending from the base portion to the nozzle portion. A force generator and a first valve are carried by the base portion. The first valve is movable in response to actuation from the force generator to move between closed and open positions. The injector/igniter also includes a second valve at the nozzle portion that is deformable in response to pressure in the fuel passageway to deform between a closed position and an open position. | 02-24-2011 |
20110057049 | Supercritical-State Fuel Injection System And Method - A fuel injector system for raising fuel to its supercritical state and injecting the supercritical-state fuel to the combustion chamber of an internal combustion engine is disclosed. A plurality of injector embodiments provides alternative ways to heat the pressurized fuel to its supercritical state. Injection of supercritical fuel into the combustion chamber is known to improve fuel entrainment and reducing ignition delay to thereby increase combustion rate, which leads to an increase in fuel efficiency. According to some embodiments, the system provides for preventing coking that may otherwise occur in an exhaust gas heat exchanger used for preheating the high pressure fuel. In other embodiments, engine cold start assistance is provided by storing pressurized, heated fuel in an insulated container. | 03-10-2011 |
20110068188 | Fuel injector for permitting efficient combustion - An embodiment of the invention provides an apparatus for fuel injection that permits efficient combustion. In one embodiment, the apparatus includes: a fuel injector including an injector needle; a fuel injection passage having a fuel injection passage inlet connected to the injector needle and a fuel injection passage outlet; and an air passage having an air passage outlet that is connected to the fuel injection passage and that is located between the fuel injection passage inlet and the fuel injection passage outlet, wherein the air passage provides air that mixes with the fuel in the fuel injection passage so that the fuel will have an increased fuel plume angle as the fuel exits from the fuel injection passage outlet. | 03-24-2011 |
20110068189 | METHOD FOR ACTIVATING A PIEZOACTUATOR IN A FUEL INJECTOR - In an activation method, a predetermined idle stroke (h | 03-24-2011 |
20110108631 | Fuel Injection Valve And Method For Co-Injecting A Liquid And A Gaseous Fuel Into The Combustion Chamber Of An Internal Combustion Engine - A fuel injection valve co-injects a liquid and a gaseous fuel into the combustion chamber of an internal combustion engine. A solid needle regulates the injection of liquid and gaseous fuels from a cavity in the fuel injection valve into the combustion chamber when the needle is lifted to its open position. In preferred embodiments, liquid fuel is metered and pressurized in an intensifier's cylinder provided within the valve body and the liquid fuel is delivered through a restricted flow passage into the cavity where it mixes with the gaseous fuel. The restricted flow passage can be formed by a small passage formed in the valve body or an annular passage between the needle and the valve body. | 05-12-2011 |
20110163177 | Method and Apparatus for Controlling Needle Seat Load in Very High Pressure Diesel Injectors - Method and apparatus for controlling needle seat load in very high pressure diesel injectors. In accordance with the method, a needle control piston responsive to hydraulic forces for controllably forcing the injector needle against the needle seat is provided, as is a stop for the needle control piston to limit the needle control piston movement toward the needle seat. This provides a stop for the needle control piston, so that the compressive deflection between the needle control piston and the needle seat limits the force of the injector needle on the needle seat against increasing hydraulic forces on the needle control piston once the needle control piston reaches the needle control piston seat. | 07-07-2011 |
20110168799 | Corrosion Resistant Magnetic Component for a Fuel Injection Valve - A magnetic component for a magnetically actuated fuel injection device is formed of a corrosion resistant soft magnetic alloy consisting essentially of, in weight percent, 3%07-14-2011 | |
20110186647 | METHOD AND DEVICE FOR INJECTING FUEL INTO THE COMBUSTION CHAMBER OF AN INTERNAL COMBUSTION ENGINE - In a method for injecting fuel into the combustion chamber of an internal combustion engine, the fuel is fed by at least one prefeed pump from a tank to at least one high-pressure pump and the high-pressure fuel fed by the high-pressure pump is supplied to the injector, wherein the injector has an injection nozzle with an axially movable nozzle needle protruding into a control chamber which can be fed with fuel under pressure and whose pressure is controlled by a control valve which opens or closes at least one inflow or outflow duct for fuel. Between the prefeed pump and the high-pressure pump, a partial volume of the fuel is branched off as a flushing volume and supplied to a flushing channel of the injector, wherein the flushing volume is directly supplied to the control valve such that the flushing volume flows at least partially through the control valve and preferably mixes with the fuel from the inflow or outflow duct, respectively. | 08-04-2011 |
20110186648 | FUEL INJECTOR - A fuel injector mountable with respect to a combustion chamber for delivering fuel thereto, the combustion chamber comprising a chamber ceiling and a chamber wall, the fuel injector comprising a nozzle body having a primary nozzle axis; a first outlet opening having a first axis; a second outlet opening having a second axis; and means for controlling fuel delivery through the first and second outlet openings. The means for controlling fuel delivery comprises an inner valve needle and an outer valve needle, and is arranged to permit fuel delivery from only the first outlet opening, or through both the first and second outlet openings together. The first and second outlet openings are oriented such that, in use, when fuel delivery is permitted through only said first outlet opening, a first spray formation is injected along the first axis, the first spray formation reaching a first target distance below said chamber ceiling at a radial distance from the primary nozzle axis. When fuel delivery is permitted through both openings together, respective first and second spray formations are injected along the respective first and second axes to merge externally of the injector so as to give rise to a combined spray formation having a third axis. The combined spray formation reaches a second target distance below said chamber ceiling at said radial distance from the primary nozzle axis, and is substantially equivalent to a spray formation delivered as if from a single outlet opening having a diameter greater than that of the first outlet opening. The first target distance is less than the second target distance. | 08-04-2011 |
20110210182 | FUEL INJECTOR ASSEMBLIES HAVING ACOUSTICAL FORCE MODIFIERS AND ASSOCIATED METHODS OF USE AND MANUFACTURE - The present disclosure is directed to fuel injectors that provide efficient injection, ignition, and combustion of various types of fuels. One example of such an injector can include a sensor that detects one or more conditions in the combustion chamber. The injector can also include an acoustical force generator or modifier that is responsive to the sensor and can be configured to (a) induce vibrations in the fuel in the injector body and/or in the combustion chamber, (b) induce vibrations in air in the combustion chamber, (c) induce vibrations in a valve driver or other injector component to actuate a flow valve, and/or (d) control patterning of fuel injected into the combustion chamber. | 09-01-2011 |
20110278368 | Automotive Gasoline Solenoid Double Pole Direct Injector - A direct fuel injector ( | 11-17-2011 |
20110278369 | METHOD OF CONTROLLING AN ELECTROMAGNETIC FUEL INJECTOR - A method of controlling an electromagnetic fuel injector including the steps of: determining a target quantity of fuel to inject; determining a hydraulic supply time as a function of the target quantity of fuel to inject and using a first injection law which provides a hydraulic supply time as a function of the target quantity of fuel; determining an estimated closing time as a function of the hydraulic supply time and using a second injection law which provides the estimated closing time as a function of the hydraulic supply time; determining an injection time as a function of the hydraulic supply time and of the estimated closing time; and piloting the injector using the injection time. | 11-17-2011 |
20110297753 | INTEGRATED FUEL INJECTOR IGNITERS CONFIGURED TO INJECT MULTIPLE FUELS AND/OR COOLANTS AND ASSOCIATED METHODS OF USE AND MANUFACTURE - Embodiments of injectors configured for adaptively injecting multiple different fuels and coolants into a combustion chamber, and for igniting the different fuels, are disclosed herein. An injector according to one embodiment includes a body having a first end portion and a second end portion. The injector further includes a first flow channel extending through the body, and a second flow channel extending through the body that is separate from the first flow channel and electrically isolated from the first flow channel. The first flow channel is configured to receive a first fuel, and the second flow channel is configured to receive at least one of a second fuel and a coolant. The injector further comprises a valve carried by the body that is movable between a closed position and an open position to introduce at least one of the second fuel and the coolant into a combustion chamber. | 12-08-2011 |
20120024973 | Large Bore Fuel System And Fuel Injector For Same - A low leakage large bore fuel system includes a common rail fluidly connected to at least one of a source of heavy fuel oil and a source of distillate diesel fuel. A plurality of fuel injectors are fluidly connected to the common rail and each include a cooling inlet and a cooling outlet. Each fuel injector also includes an electrical actuator coupled to a direct operated nozzle check valve by a pilot valve member and a control valve member. Fuel leakage is reduced between injection events by equalizing pressures in a pilot control chamber and an intermediate control chamber that are separated by a guide surface of the control valve member. Also, between injection events the pilot valve member blocks a drain outlet from a common rail inlet of the fuel injector. | 02-02-2012 |
20120037719 | VALVE ASSEMBLY FOR AN INJECTION VALVE AND INJECTION VALVE - A valve assembly for an injection valve has a valve body with a central longitudinal axis and a cavity with a fluid inlet portion and a fluid outlet portion, a valve needle axially movable in the cavity, the needle preventing a fluid flow in a closing position and releasing the fluid flow via a main fluid line in further positions, a member being fixedly associated to the needle and having a surface facing the outlet portion, a first chamber embodied in the cavity, a second chamber being part of the main line, and a one-way-valve which is hydraulically arranged between the first and second chamber to prevent a fluid flow through a first fluid path in a closing position of the one-way-valve and to release a fluid flow through the first fluid path between the first and second chamber in further positions of the one-way-valve. | 02-16-2012 |
20120043393 | Fuel Injector with Damper Volume and Method for Controlling Pressure Overshoot - A fuel injector configured to inject a predetermined volume of fuel, such as heavy fuel oil, is disclosed. The disclosed injector includes an injector body that defines a fuel inlet, a fuel passageway, and an orifice. The injector also includes a needle disclosed at least partially within the injector body. The needle is movable between a closed position where the needle blocks the orifice and an open position where the needle at least partially unblocks the orifice. At least the injector body and the needle define a nozzle chamber. The nozzle chamber is in communication with a high pressure fuel passageway and the orifice. The fuel passageway and nozzle chamber have a combined volume greater than the predetermined injection volume. The combined volume of the nozzle chamber and fuel passageway act as a damper to alleviate the effects of pressure overshoot, pressure oscillations and water hammer | 02-23-2012 |
20120080536 | METHOD FOR CONTROLLING A FUEL INJECTOR - A method for controlling an electromagnetically-activated fuel injector includes determining an injector activation signal having an injection duration, an initial peak pull-in current and a secondary hold current corresponding to a preferred injected fuel mass for a fuel injection event associated with a non-monotonic region of injector operation, and controlling the fuel injector using the injector activation signal to achieve the preferred injected fuel mass for the fuel injection event. | 04-05-2012 |
20120085834 | Flame Tolerant Primary Nozzle Design - A fuel nozzle includes a nozzle cavity with a side wall defining an annular cavity, and swirler vanes arranged circumferentially around an outer surface of the nozzle cavity. A plurality of ports are formed in the side wall and are circumferentially spaced around the nozzle cavity. The ports provide fluid communication through the side wall. The plurality of ports are positioned and/or oriented such that fuel jets communicated through the side wall are communicated downstream of the swirler vanes. | 04-12-2012 |
20120111965 | Fuel Injector With Needle Control System That Includes F, A, Z And E Orifices - A common rail fuel injector includes a needle valve member that moves to open and close nozzle outlets for a fuel injection event responsive to pressure in a needle control chamber. Between injection events, the needle control chamber is fluidly connected to the fuel inlet by a first pathway that includes a Z orifice, and fluidly connected to the fuel inlet by a second pathway that includes an F orifice, an intermediate chamber and an A orifice. During an injection event, the needle control chamber is fluidly connected to a drain outlet by a third pathway that includes the A orifice, the intermediate chamber and an E orifice. Different performance characteristics are achieved by adjusting the sizes of the respective of F, A, Z and E orifices. | 05-10-2012 |
20120153034 | Solenoid Actuator And Fuel Injector Using Same - In one aspect, a fuel injector includes an injector body that defines a fuel inlet, a drain outlet and a nozzle outlet. A direct operated check valve is positioned in the injector body and includes a needle valve member with an opening hydraulic surface exposed to fluid pressure in a nozzle supply passage, and a closing hydraulic surface exposed to fluid pressure in a needle control chamber. The needle valve member is movable between a first position at which the nozzle supply passage is blocked to the nozzle outlet, and a second position at which the nozzle supply passage is open to the nozzle outlet. A needle control valve is positioned in the injector body and includes a control valve member movable between a first position at which the needle control chamber is fluidly connected to the drain outlet, and a second position at which the needle control chamber is fluidly blocked to the drain outlet. A solenoid actuator is positioned in the injector body and includes a stator assembly and an armature assembly coupled to the control valve member. One of the stator assembly and the armature assembly includes a non-magnetic insert that moves into and out of contact with another of the stator assembly and the armature assembly at an energized position and a de-energized position, respectively. | 06-21-2012 |
20120153035 | FUEL INJECTION DEVICE AND METHOD FOR A FUEL REFORMER - In a fuel injection device and method for injecting hydrocarbon fuel into a fuel reformer, the temperature of the fuel injection device is regulated by simultaneously heating the fuel and cooling the fuel injection device. | 06-21-2012 |
20120205461 | COMPENSATION FOR SPOOL MOTION RELATED FUEL DELIVERY DRIFT OVER TIME IN A HYDRAULICALLY ACTUATED FUEL INJECTOR - A method and system ensures that a certain amount of fuel is delivered by a fuel injector at each injection cycle over the life of the fuel injector. The injector has an armature that moves between open and close positions. A base time for the armature to move from the open position to the close position is established. A present time for the armature to move from the open position to the close position is compared to the base time. If the present time is greater than the base time by a predetermined amount, then 1) a present injector duration time is set to be greater than an original injector duration time to ensure that the certain amount of fuel is delivered by the fuel injector, or 2) a change in service condition is indicated for the fuel injector. | 08-16-2012 |
20120248217 | BI-DIRECTIONAL FUEL INJECTION METHOD - In certain embodiments, a fuel injector includes a wall separating a fuel passage from an air passage. The fuel injector also includes a fuel injection port extending from a first side of the wall to a second side of the wall for injecting a flow of fuel from the fuel passage into a flow of air in the air passage. In addition, the fuel injector includes first and second feedback lines extending from a downstream end of the fuel injection port to an upstream end of the fuel injection port. The first and second feedback lines are disposed on opposite sides of the fuel injection port. In addition, the first and second feedback lines are disposed entirely within the wall. | 10-04-2012 |
20120312889 | INJECTOR TIP ASSEMBLY AND METHOD OF FUEL INJECTION - An injector tip for a nozzle includes a center body having a plurality of center body openings at a distal end configured to inject a fuel flow into a combustion zone of a combustor. One or more fuel passages are arranged around the center body and are configured to inject a fuel slurry into the combustion zone. One or more oxygen passages are arranged around the center body and are configured to inject an oxygen flow into the combustion zone. | 12-13-2012 |
20120312890 | Fuel Nozzle with Swirling Vanes - A fuel nozzle includes a swirler and a fuel injector positioned upstream from the swirler. The swirler includes an inner hub, an intermediate dividing wall, an outer shroud, a number of inner swirling vanes, and a number of outer swirling vanes. The intermediate dividing wall is concentrically positioned about the inner hub. The outer shroud is concentrically positioned about the intermediate dividing wall. Each inner swirling vane extends between the inner hub and the intermediate dividing wall, and each outer swirling vane extends between the intermediate dividing wall and the outer shroud. | 12-13-2012 |
20120318885 | VALVE ASSEMBLY FOR AN INJECTION VALVE AND INJECTION VALVE - A valve assembly for an injection valve may include a valve body comprising a cavity with a fluid inlet portion and a fluid outlet, and a valve needle axially movable in the cavity, the valve needle preventing a fluid flow through the fluid outlet in a closing position and releasing the fluid flow through the fluid outlet in further positions, the valve needle comprising a radially extending protrusion and an electro-magnetic actuator unit configured to actuate the valve needle and comprising an armature in the cavity. The armature comprises an armature cavity having a first stop surface and a second stop surface that faces the first stop surface. The protrusion of the valve needle is arranged in the armature cavity axially between the first stop surface and the second stop surface such that a relative movement between the valve needle and the armature in axial direction is limited. | 12-20-2012 |
20120325926 | FUEL INJECTOR HAVING REDUCED ARMATURE CAVITY PRESSURE - A fuel injector for an engine is disclosed. The fuel injector may have a fuel nozzle with at least one injection orifice, and a needle element movable within the fuel nozzle between a first position at which the needle element inhibits fuel flow and a second position at which fuel flow is substantially uninhibited. The fuel injector may also have a control chamber located at a base end of the needle element, a body, and a control valve disposed within the body and movable to selectively drain the control chamber, thereby causing the needle element to move between the first and second positions. The fuel injector may further have an armature disposed within an armature cavity of the body and selectively energized to move the control valve, and a pressure reducer disposed within the body and configured to reduce a pressure of the armature cavity. | 12-27-2012 |
20130037622 | Three-Way Needle Control Valve And Dual Fuel Injection System Using Same - A fuel injector includes an injector body that defines a fuel inlet, a drain outlet and a nozzle outlet, and has disposed therein a nozzle chamber, a needle control chamber and a valve chamber. The needle control chamber is fluidly connected to the drain outlet through a drain passage that includes the conical seat, is fluidly connected to the nozzle chamber through a Z orifice, and fluidly connected to the valve chamber through an A orifice. The nozzle chamber is fluidly connected to the valve chamber by a pressure passage that includes an F orifice that opens through a flat seat. A control valve member is trapped to move between contact with conical seat and contact with the flat seat. An electrical actuator is operable to push the control valve member away from the conical seat toward the flat seat when energized. A direct control needle valve has an opening hydraulic surface positioned in the nozzle chamber and a closing hydraulic surface positioned in the needle control chamber. The fuel injector may include first and second electronically controlled valves for independently injecting a gaseous fuel and a liquid fuel. | 02-14-2013 |
20130043323 | SHAPING A FUEL CHARGE IN A COMBUSTION CHAMBER WITH MULTIPLE DRIVERS AND/OR IONIZATION CONTROL - The present disclosure is directed to injectors with integrated igniters providing efficient injection, ignition, and complete combustion of various types of fuels. These integrated injectors/igniters can include, for example, multiple drivers used to shape charges, controllers used to modify operations based on ionization parameters, and so on. | 02-21-2013 |
20130048748 | CATALYTIC COATING TO PREVENT CARBON DEPOSITS ON GASOLINE DIRECT INJECTOR TIPS - A fuel injector ( | 02-28-2013 |
20130186969 | METHOD OF CONTROLLING THE OPERATION OF AN INTENSIFIER PISTON IN A FUEL INJECTOR - A method of controlling motion of a spool in a fuel injector is provided. A first current is provided on a close coil of the injector. A second current is initiated on an open coil of the injector while providing the first current. The first current is reversed after the second current reaches a saturation point. The first current is discontinued. The spool moves to the open position. The second current is discontinued with the spool in the open position. A third current is initiated on the close coil. A fourth current is provided on the open coil after initiating the third current. The fourth current on the open coil of the injector is reversed after the third current on the close coil reaches a saturation point. The fourth current is discontinued. The third current is discontinued with the spool in the closed position. | 07-25-2013 |
20130233936 | Method for Controlling the Injection Quantity of a Piezoinjector of a Fuel Injection System - A method for controlling the injection quantity of a piezoinjector of a fuel injection system, which comprises a nozzle needle displaceable by a piezoactuator. Based on the instantaneous injection quantity, a selection is made among various control methods. In a ballistic injector mode, a first control method is carried out, wherein both a needle closing point in time is equalized and a needle travel time is also equalized. In a full stroke injector mode, a second control method is carried out, wherein a needle closing point in time is equalized, but the needle travel time is not equalized. | 09-12-2013 |
20130248612 | Solenoid Actuator And Fuel Injector Using Same - Starting and ending an injection event are accomplished by respectively energizing and de-energizing a solenoid actuator to move an armature assembly with respect to a stator. The stator is protected from impact damage by maintaining the armature assembly out of contact with the stator. The inducement of residual magnetism in the armature assembly is reduced by stopping the armature assembly at a large radius outside of the magnetic flux circuit through the stator and soft magnetic armature of the armature assembly, when the solenoid actuator is energized. | 09-26-2013 |
20130277447 | METHOD AND SYSTEM TO CONTROL A FUEL INJECTOR - An injection system includes a plurality of actuators. Each of the actuators is configured to move one or more portions of a center body of the fuel injector. The system also includes a controller configured to control each of the plurality of actuators individually to change a flow rate or a direction of output of a mixture of fuel and air from an output of the center body of the fuel injector. | 10-24-2013 |
20130341421 | FUEL INJECTOR - A fuel injector, in particular for direct injection of fuel into a combustion chamber, including a housing having one combustion-chamber side injection aperture, a valve needle which is linearly movable in the housing and outwardly opening for opening and closing the injection aperture, a piezoelectric actuator for moving the valve needle, a first stop surface on the valve needle facing the combustion chamber, and a second stop surface on the housing diametrically opposed to the first stop surface. The first stop surface makes an impact on the second stop surface in the case of a maximally possible movement of the valve needle in the direction of opening with the aid of the piezoelectric actuator. | 12-26-2013 |
20140034747 | Method For Detecting A Nozzle Chamber Pressure In An Injector And Injection System - A method is disclosed for detecting a nozzle chamber pressure in an injector that includes a closure element for opening and closing an injection opening, at least one actuator which directly actuates the closure element, and at least one sensor for measuring a state, which is dependent on the nozzle chamber pressure, of the closure element, wherein at least one measurement variable which is dependent on the state is detected by means of the sensor, and wherein a deviation of the measurement value from a predefined value is determined. An injection system for carrying out such method is also disclosed. | 02-06-2014 |
20140061326 | Dual Check Fuel Injector With Single Actuator - A fuel injector includes first and second check valve members that open and close first and second nozzle outlet sets, respectively, to inject two fuels that differ in at least one of chemical identity, pressure and molecular state. The first check valve member defines a through passage, includes a closing hydraulic surface exposed to fluid pressure in the first control chamber, and moves into and out of contact with a first seat on an injector body. The second check valve member includes a closing hydraulic surface exposed to fluid pressure in a second control chamber, and moves into and out of contact with a second seat located on the first check valve member. A control valve member is movable between first and second positions that respectively block and allow fluid communication between the first and second control chambers and a drain outlet. | 03-06-2014 |
20140061327 | SYSTEM AND METHOD FOR STAGING FUEL TO A COMBUSTOR - A system for staging fuel to a combustor includes a fuel manifold with a plurality of valves. At least one fuel circuit provides fluid communication between the fuel manifold and a first set of fuel nozzles. A flow distribution valve is fluidly connected to one of the at least one fuel circuits between the fuel manifold and the first set of fuel nozzles. The flow distribution valve includes an inlet and at least two outlets. | 03-06-2014 |
20140131466 | HYDRAULIC DISPLACEMENT AMPLIFIERS FOR FUEL INJECTORS - The present technology is generally related to hydraulic displacement amplifiers in fuel injectors. In some embodiments, a gaseous fuel injector includes a piezoelectric actuator, a working volume reservoir adjustable between a first volume and a second volume smaller than the first volume, and a combustion chamber valve in communication with the working volume reservoir and movable between a closed configuration when the working volume reservoir comprises the first volume and an open configuration when the working volume reservoir comprises the second volume. The gaseous fuel injector further includes a hydraulic displacement amplifier in operable connection with the actuator. The hydraulic displacement amplifier can have a plurality of pistons in communication with the working volume reservoir and configured to adjust the working volume reservoir from the first volume to the second volume. | 05-15-2014 |
20140131467 | SYSTEMS AND METHODS FOR PROVIDING MOTION AMPLIFICATION AND COMPENSATION BY FLUID DISPLACEMENT - The present technology relates generally systems and methods for providing motion amplification and compensation by fluid displacement in fuel injector systems. For example, some embodiments of gaseous fuel injectors include a piezoelectric actuator and a motion transfer system coupled to the piezoelectric actuator. The motion transfer system includes a housing, a first piston having a first effective area disposed in the housing, and a second piston having a second effective area disposed in the housing. The second effective area is less than the first effective area and the first and second pistons define a fluid chamber therebetween. The motion transfer system can amplify actuation of a fuel injector valve. | 05-15-2014 |
20140138454 | Methods of Operation of Fuel Injectors with Intensified Fuel Storage - Methods of operating fuel injectors with intensified fuel storage. At least one storage volume is provided in the intensifier type fuel injector, with a check valve between the intensifier and the needle chamber and storage volume preventing loss of injection pressure while the intensifier plunger cylinder is refilling with fuel. Using the check valve to isolate the storage volume from the intensifier to reduce and control pressure spikes that effect injector operation. This provides very efficient injector operation, particularly at low engine loads, by eliminating the wasted energy of compressing, venting and recompressing fuel for injection and reducing and controlling pressure spikes that effect injector operation. | 05-22-2014 |
20140191055 | MULTI-PHYSICS FUEL ATOMIZER AND METHODS - A fuel atomizer that includes a housing having a fuel inlet and at least one primary orifice positioned at the inlet, wherein the at least one orifice configured to disperse a stream of fuel into a plurality of fuel droplets. The plurality of fuel droplets contact a fuel impingement surface to break up the plurality of fuel droplets into a plurality of smaller secondary droplets and create a thin film of secondary droplets on the impingement surface. At least one pressurized air channel delivers an airflow into contact with the secondary droplets. The secondary droplets pass through a plurality of secondary outlet orifices to exit the housing. A size of the plurality of secondary droplets is reduced when passing out of the plurality of secondary orifices. | 07-10-2014 |
20140197245 | ARRANGEMENT AND METHOD FOR PREVENTING CARBON FORMATION IN SPRAY GUIDING STRUCTURES - Method for preventing carbon build-up on fuel spray guiding surfaces proximate a nozzle of a fuel injector. Liquid fuel handling surfaces of the fuel injector can remain cool while providing very hot surfaces to burn off carbon particles before carbon deposits can build up and change the spray characteristics. In the method, a spray guiding structure guides the fuel spray after exiting from the fuel injector and a deflector member is arranged around the injector body. The spray guiding structure is thermally insulated from the fuel injector, and this thermal insulation enables the spray guiding structure to be heated to a temperature above about 900° F. to prevent build up of carbon thereon. | 07-17-2014 |
20140246508 | GASEOUS METERING CONTROL FOR DUAL FLUID INJECTOR - A fuel injection system ( | 09-04-2014 |
20140252108 | COMMON RAIL INJECTOR WITH REGULATED PRESSURE CHAMBER - A needle type fuel injector has a needle control chamber at a pressure subject to a control valve in a control valve chamber which in an opening phase is lifted from its seat to expose the control valve chamber, connecting passages, and needle control chamber to a low pressure drain and in a closing phase is urged against the seat to isolate the control valve chamber, connecting passages, and needle control chamber from the drain. Resistance to the flow or displacement of fuel through the control valve seat is provided by a pressure regulating valve as the control valve rapidly closes against its seat, thereby reducing the rate of closure and thus the impact of the control valve on the seat. | 09-11-2014 |
20140252109 | ANTI-CAVITATION THROTTLE FOR INJECTOR CONTROL VALVE - A needle type fuel injector has a needle control chamber at a pressure subject to a control valve in a control valve chamber which in an opening phase is lifted from its seat to expose the control valve chamber, connecting passage, and needle control chamber to a low pressure drain and in a closing phase is urged against the seat to isolate the control valve chamber, connecting passage, and needle control chamber from the drain. The potential for cavitation at high fuel injection pressure is reduced by throttling the flow of fuel past the control valve seat when the control valve opens, thereby maintaining sufficient back pressure in the control valve chamber and upstream connecting passages. | 09-11-2014 |
20140263697 | INTEGRATED FUEL INJECTORS AND IGNITERS AND ASSOCIATED METHODS OF USE AND MANUFACTURE - The present disclosure is directed to integrated injector/igniters providing efficient injection, ignition, and complete combustion of various types of fuels. One example of such an injectors/igniter can include a body having a base portion opposite a nozzle portion, and a fuel passageway extending from the base portion to the nozzle portion. A force generator and a first valve are carried by the base portion. The first valve is movable in response to actuation from the force generator to move between closed and open positions. The injector/igniter also includes a second valve at the nozzle portion that is deformable in response to pressure in the fuel passageway to deform between a closed position and an open position. | 09-18-2014 |
20140284394 | INJECTION ELEMENT - An injection element for injecting two propellants into a combustion chamber, and usable for a rocket engine including at least one combustion chamber of type having an injector including one or more such injection elements. The injection element includes a first annular duct for injecting a first propellant and a second annular duct for injecting a second propellant, the second duct being coaxial with and externally adjacent to the first duct, and potentially a third annular duct that is coaxial with and externally adjacent to the second duct. The first duct surrounds a central body of the injection element, the central body including a cavity in communication with an outer surface of the central body and configured to damp at least one predetermined acoustic frequency. | 09-25-2014 |
20140299671 | CO-AXIAL DUAL FLUIDS METERING SYSTEM AND METHODS - A metering system for a fuel atomizer includes a housing having a fuel inlet and an oxidizer inlet arranged coaxially, and an oxidizer metering device having a plurality of oxidizer channels, an oxidizer flow controller, and a fuel metering device. The oxidizer channels are spaced apart circumferentially in the housing and are arranged angled in at least one of a radially inward direction and a tangential direction to create a swirl of oxidizer flow in a mixing chamber of the fuel atomizer. The oxidizer flow controller is configured to control flow of oxidizer from the oxidizer inlet to the plurality of oxidizer channels. The fuel metering device is configured to control fuel flow from the fuel inlet to the mixing chamber. | 10-09-2014 |
20140361096 | SYSTEM AND METHOD FOR CONTROL OF FUEL INJECTOR SPRAY - The disclosure provides an improved fuel injector and method of operating the fuel injector to provide at least two different types of fuel spray to a combustion chamber of an internal combustion engine. The two types of spray are formed by providing a first fuel pressure to the fuel injector during a first portion of an injection event at a first pressure and providing a second fuel pressure to the fuel injection during a second portion of the injection event, and maintaining a substantially constant fuel flow rate throughout the injection event. | 12-11-2014 |
20150014427 | CONTROL VALVE - A control valve of a fuel injector includes a generally cylindrical control valve housing having an axis, and a control valve body disposed within the control valve housing. An inlet throttle passage is in fluid communication with the control valve housing and is oriented to be generally tangential to the control valve housing. | 01-15-2015 |
20150108236 | THREE-PIECE AIRBLAST FUEL INJECTOR - A fuel system includes an external cool air source, and a fuel injector. The fuel injector includes a fuel circuit, an outer air circuit, an inner air circuit, and an outlet. The fuel circuit receives liquid fuel from a fuel inlet. The outer air circuit receives cool air from the cool air source and substantially surrounds the fuel circuit. The inner air circuit is in fluid communication with the outer air circuit and a portion of the fuel circuit substantially surrounds the inner air circuit. The outlet provides atomized fuel from the fuel circuit, outer air circuit and inner air circuit to a combustor. | 04-23-2015 |
20150108237 | FUEL INJECTOR WITH KINETIC ENERGY TRANSFER ARMATURE - Injectors and solenoid valves incorporating actuators with kinetic energy transfer armatures. A fuel injector includes a longitudinally extending injector body and a valve supported in the injector body. The valve is configured for longitudinal movement within the injector body. An armature is connected to the valve and an impact member is disposed between the armature and a solenoid, and moveably connected to the armature. The solenoid is operative when energized to sequentially move the impact member and armature toward the solenoid, thereby actuating the valve. The fuel injector further includes a return magnet located adjacent the armature and opposite the solenoid, wherein the return magnet is operative to maintain the valve in a closed position when the solenoid is not energized. | 04-23-2015 |
20150108238 | Method for Monitoring an Injection Valve, and Method for Operating an Injection Valve - A method is disclosed for monitoring an opening of an injection valve. The injection valve includes a valve body with a cavity having a fluid outlet portion, a valve needle movable in the cavity between a closing position preventing fluid flow outlet and other positions allowing fluid flow through the outlet, and an actuator unit for actuating the valve needle. The method includes actuating the actuator unit with a predetermined voltage signal, recording a time-dependent profile of a current through the actuator unit, detecting a first gradient alteration time where the gradient of the recorded current profile changes more than a first threshold, detecting a second gradient alteration time where the gradient of the recorded current profile changes more than a second threshold, and based on the first and second gradient alteration times determining a diagnostic value usable for compensating a long-term drift of the injection valve. | 04-23-2015 |
20150115055 | Fuel Injection Valve And Method Of Actuating - A fuel injection valve injects a fuel into the combustion chamber or into the injection port of an internal combustion engine, the valve being actuated by an actuator assembly that includes a small displacement actuator and a large displacement actuator. The method includes commanding the small displacement actuator to move the valve member to a first open position corresponding to a first flow area and commanding the large displacement actuator to move the valve member to a second open position corresponding to a second flow area that is larger than the first flow area such that the ratio between the second flow area and the first flow area is at least 15:1. The fuel injection valve can also be operated to alternatively inject two different fuels, one of the fuels being a gaseous fuel and the other one being a liquid fuel. | 04-30-2015 |
20150144710 | FUEL INJECTOR - The present invention relates to a fuel injector for use in delivering fuel to an internal combustion engine. The fuel injector includes a nozzle having a valve needle which is movable with respect to a valve needle seat. The valve needle travels through a range of movement between a closed position and an open position to control fuel delivery through at least one nozzle outlet. The valve needle cooperates with a needle sleeve or a control member which is located in a piston guide. The valve needle is movable relative to the needle sleeve or the control member. The needle sleeve or the control member is movable relative to the piston guide. The invention also relates to a method of operating a fuel injector; and a fuel injector control unit. | 05-28-2015 |
20150322894 | GASEOUS FUEL ADMIXING DEVICE FOR A GAS-POWERED INTERNAL COMBUSTION ENGINE - A device for mixing a gaseous fuel into an oxygen-containing gas flow of a gas-powered internal combustion engine includes a housing component having an inlet that connects to a gaseous fuel supply conduit and a slit that opens into an intake pipe. The slit has a longitudinal extension that is oriented approximately perpendicular to the axial direction of the intake pipe. A valve body is movable relative to the housing component. An annular gap between the valve body and an outlet opening of the housing component has a cross-sectional area that varies in accordance with changes in the position of the valve body relative to the housing component. The annular gap determines the flow-through cross-section of a passageway between the inlet and the outlet. Furthermore, a gaseous fuel flow exiting from the slit is directed approximately perpendicular to the axial direction of the intake pipe. | 11-12-2015 |
20150337786 | DIRECT FUEL INJECTORS WITH VARIABLE INJECTION FLOW RATE - An injector is designed to provide continuously variable injection rate shaping. With a hydro-mechanical internal feedback mechanism, injector needle position can be determined by controlling a feedback valve's on/off timing. According to the needle position, an injection needle valve opening can be controlled, and then the injection flow rate can be delivered proportionally. Also in accordance with the present invention a CRDI systems are provided including injectors of the present invention, wherein results demonstrate that injector designs of the present invention not only achieve rate shaping capability but also solve the above-noted problems of the current CRDI system. Finally, an iterative learning controller has also been developed to track the desired injection rate, and an injection rate estimator is designed to realize a cycle to cycle feedback control. | 11-26-2015 |
20150345444 | Electromagnetic Actuator Assembly For A Fluid Injection Valve And Method For Operating A Fluid Injection Valve - An electromagnetic actuator assembly for a fluid injection valve includes a first coil and a second coil, which are configured for moving an armature, and an electrical connection circuit for connecting the first and second coils to a power supply. The electrical connection circuit is configured to energize the first coil without energizing the second coil in a first operating mode of the actuator assembly and to energize both the first coil and the second coil in a second operating mode of the actuator assembly. | 12-03-2015 |
20150345454 | Fuel Injector - A fuel injector is provided and may include an injector body and an injector valve. The injector body may define a longitudinally extending chamber and may include a first intake port, a second intake port and a fuel injection port. The injector valve may be disposed within the chamber and may include a longitudinally extending aperture in fluid communication with the longitudinally extending chamber. The injector valve may be configured to prevent fluid communication between the first intake port and the second intake port, and may be configured to prevent fluid communication between the fuel injection port and the second intake port. | 12-03-2015 |
20150369160 | METHOD OF CONTROLLING INJECTION PRESSURE LEVEL IN UNIT INJECTORS - A method to control an injection pressure level of fuel within a unit injector is provided. The method includes provision of a second spill valve in the unit injector, which is connected in parallel to a first spill valve. The fuel is delivered to the unit injector with the first spill valve maintained in a passive state. This facilitates return of the first portion of the fuel to the low-pressure fuel manifold. The first spill valve is actuated to an active state to block the flow of fuel to the low-pressure fuel manifold, to maintain the unit injector at the injection pressure level. The second spill valve is actuated concurrently or prior to the actuation of the first spill valve. This facilitates return of a second portion of the fuel to the low-pressure fuel manifold. This is done to limit the injection pressure level within the unit injector. | 12-24-2015 |
20150369187 | METHOD FOR CONTROLLING A PIEZOELECTRIC FUEL INJECTOR OF AN INTERNAL COMBUSTION ENGINE OF A VEHICLE COMPRISING A STEP FOR POLARIZING THE PIEZOELECTRIC ACTUATOR - Method for controlling a fuel injector with a piezoelectric actuator acting on a valve element, including the following steps, in the normal operation of the vehicle:
| 12-24-2015 |
20150377198 | COATED HIGH PRESSURE GASOLINE INJECTOR SEAT TO REDUCE PARTICLE EMISSIONS - A fuel injector has a seat and at least one seat passage. The seat includes an outer tip surface through which the seat passage extends. A non-thermally conducting coating is provided on at least a portion of the outer tip surface and not on surfaces defining the seat passage. The coating is constructed and arranged to be heated by combustion gases so that the outer tip surface reaches a temperature greater than a temperature that the outer tip surface would reach if the coating was not provided so as to cause evaporation of fuel that contacts the outer tip surface, The seat passage is constructed and arranged to not be substantially heated by conduction from the outer tip surface and to be cooled by fuel passing there-through so as to prevent deposits of combustion from accumulating on surfaces defining the seat passage. | 12-31-2015 |
20160003158 | FUEL DISPENSING APPARATUS AND METHOD OF OPERATION - A fluid dispensing apparatus that may be additive manufactured as one unitary piece and may be a fuel injector for a gas turbine engine includes a radial displacement bellows having an outer surface that faces and may be exposed to a surrounding environment and an interior surface that faces and may define at least in-part a flowpath extending along a centerline. The radial displacement bellows is constructed and arranged to move between an expanded state when a pressure differential between the environment and the flowpath is low to a restricted state when the pressure differential is high. | 01-07-2016 |
20160003184 | METHOD AND DEVICE FOR OPERATING A FUEL INJECTION DEVICE, ESPECIALLY OF A MOTOR VEHICLE - In a method for operating a fuel injection device of a motor vehicle, fuel is conveyed under high pressure into a high-pressure reservoir, the pressure of which is controlled with the aid of a pressure regulation and from which fuel is taken for injection via at least one fuel injection valve under the control of a control device. A control pressure deviation of the pressure in the high-pressure reservoir is detected and the existence of a balance disturbance between quantity of fuel supplied to the high-pressure reservoir and quantity of fuel taken from the high-pressure reservoir is deduced from the control pressure deviation. If a balance disturbance exists, operational influencing of the fuel injection device counteracting the balance disturbance is produced and/or a corresponding report is generated. | 01-07-2016 |
20160010556 | FLUID NOZZLE AND METHOD OF DISTRIBUTING FLUID THROUGH A NOZZLE | 01-14-2016 |
20160010866 | AERATING FUEL INJECTOR SYSTEM FOR A GAS TURBINE ENGINE | 01-14-2016 |
20160061168 | Single Actuator Fuel Injector for Duel Fuels - A fuel injector concurrently injects a liquid fuel and a gaseous fuel into a combustion chamber of an internal combustion engine. An interior wall of an injector body defines a control chamber and an injection chamber. A needle valve is disposed within the body and has a control surface fluidly communicating with the control chamber. A liquid fuel inlet fluidly communicates with the control chamber and a gaseous fuel inlet fluidly communicates with the injection chamber. A delivery passage is defined by at least one of the needle valve and the interior wall and configured to place the control chamber in fluid communication with the injection chamber to permit flow of liquid fuel therebetween. | 03-03-2016 |
20160153412 | FUEL INJECTOR | 06-02-2016 |
20160160827 | TWO STEP METERING SOLENOID FOR MULTI-PHYSICS FUEL ATOMIZER - A metering system for a fluid atomizer includes a housing, first and second metering members, and at least one solenoid. The housing includes a mixing chamber. The first metering member is operable to control flow of a first fluid to the mixing chamber. The second metering member is arranged coaxial with the first metering member and operable to control flow of a second fluid to the mixing chamber. The at least one solenoid is configured to operate at least one of the first and second metering members. | 06-09-2016 |
20160177900 | FUEL INJECTOR FOR COMMON RAIL | 06-23-2016 |
20160377040 | FUEL INJECTION RATE MODULATION BY MAGNETOSTRICTIVE ACTUATOR AND FLUIDOMECHANICAL COUPLER - An improved device, system and/or method for modulating fuel injection rate through fast magnetostrictive actuation is provided. A fluidomechanical coupler uses fluid to operably couple a magnetostrictive element and a needle element. The fluidomechanical coupler permits the needle element to move from a closed position to an open position when the magnetostrictive element is actuated from a default length to an expanded length. The fluidomechanical coupler is configured to translate an input force into an output response in a direction opposite the input force. The fluidomechanical coupler includes input shafts each within an input bore and positioned adjacent to the magnetostrictive element, a movable output shaft within an output bore and positioned adjacent to the needle element, and fluid passageways connecting input bores and the output bore. Displacement of the fluid between the input bore and the output bore applies or removes a force on the output shaft. | 12-29-2016 |
20190145334 | A Fuel Injector with an Idle Stroke | 05-16-2019 |