Plate-type Armature Valve (e.g., Plate And Integral Projection Or Ball) Patents (Class 239/585.3)
  • Patent number: 10941742
    Abstract: An engine head assembly includes a plurality of fuel injectors each positioned within a fuel injector bore in the engine head, and each being fluidly coupled with a fluid conduit. Each fuel injector includes a valve assembly positioned within a fuel injector case that includes an elongate body having an opening. A filter sleeve having a particle-blocking perforation array structured to block particles is press fit on the fuel injector case to form a fluid flow path from the fluid conduit into the fuel injector case.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: March 9, 2021
    Assignee: Caterpillar Inc.
    Inventors: Aaron Michael Brown, Cory A Brown
  • Patent number: 10933155
    Abstract: A method and apparatus for vapor dispensing apparatus is described. The vapor dispensing apparatus includes: a housing defining a chamber having an inner contact surface, wherein the housing further comprises an aperture providing fluid communication between the chamber and an external environment; an evaporable material receptacle movably disposed within the chamber such that a dispensing portion of the receptacle is disposed in contact with at least a portion of the surface; and a motor coupled to the apparatus, configured to move the receptacle.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: March 2, 2021
    Inventors: Ravi G. Lal, Amit Lal
  • Patent number: 10816104
    Abstract: A solenoid valve includes a solenoid portion that moves a pin to one axial side and a nozzle portion including a valve body connected to one axial side of the pin. The valve body is driven by the pin and moves to one axial side to close a valve hole and urged by a spring and moves to the other axial side to open the valve hole. The spring is disposed in an annular space between a radial outer surface of a second valve body portion and a radial inner surface of a valve chamber, one axial side of the spring is in contact with a bottom surface of the valve chamber, the other axial side is in contact with a first valve body portion extending radially from an outer surface of the second valve body portion, and the spring urges the valve body toward the other axial side.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: October 27, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Dongming Chen, Tomohiko Nakanishi, Koichi Ishikawa, Yoshikatsu Goto
  • Patent number: 10767780
    Abstract: A solenoid valve includes a solenoid portion that moves a pin to one axial side and a nozzle portion including a valve body connected to one axial side of the pin, and a nozzle body that houses the valve body. The nozzle body includes a valve chamber that has a cavity recessed toward one axial side with an opening on the other axial side and that houses the valve body on one axial side of the cavity, and a solenoid housing portion that houses the solenoid portion on the other axial side of the valve chamber of the cavity. The valve body is driven by the pin and moves to one axial side to close a valve hole and is urged by a spring and moves to the other axial side to open the valve hole.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: September 8, 2020
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Dongming Chen, Tomohiko Nakanishi, Koichi Ishikawa, Yoshikatsu Goto
  • Patent number: 10704516
    Abstract: The present invention includes a valve seat and a valve body that cooperatively open/close a fuel passage, a movable element having the valve body provided at one end part thereof and a movable iron core 27a provided at the other end part thereof, a fixed iron core 25 which faces the movable iron core 27a and which attracts the movable iron core 27a by applying a magnetic attraction force thereto, and a cylindrical member that includes thereinside the fixed iron core 25 and the movable iron core 27a. The fixed iron core 25 includes a reduced-diameter part 25m on an outer circumferential surface at the side facing the movable iron core 27a, and the movable iron core 27a includes a reduced-diameter part 27am on an outer circumferential surface at the side facing the fixed iron core 25.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: July 7, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Akihiro Yamazaki, Takahiro Saito, Nobuaki Kobayashi, Akiyasu Miyamoto
  • Patent number: 10570862
    Abstract: A valve assembly may include: a valve body with a longitudinal axis and a cavity; a valve needle; and a driving device for displacing the valve needle. In some embodiments, the valve needle comprises a disc element. The disc element and the driving device comprise mutually facing and radially extending coupling surfaces, the coupling surfaces having an overlapping area of at least 35% of the cross-sectional area of the cavity. The driving device takes the disc element with it for displacing the valve needle in the opening direction solely by means of hydraulic interaction between the coupling surfaces when the driving device is displaced in the opening direction. The coupling surface of the driving device engages in a form-fit connection with the coupling surface of the disc element for pushing the valve needle towards the closing position.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: February 25, 2020
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Ivano Izzo
  • Patent number: 10242785
    Abstract: A valve for metering fluid has an electromagnet for actuating a valve needle controlling a metering opening. The electromagnet generates, upon current flow, a magnetic flux that proceeds via an outer pole, a hollow-cylindrical inner pole, an armature displaceable on an armature guidance region embodied on the valve needle, and a working air gap delimited by the armature and inner pole. Disposed fixedly on the valve needle is an entraining element that penetrates axially displaceably into an entraining element guidance region embodied in the inner pole and has a radial stop shoulder for the armature which delimits a take-up travel or pre-stroke travel. The entraining element is extended into an additional inner pole having a pole surface formed by the stop shoulder, and is embodied magnetically conductively and a magnetic flux between the armature and valve needle is suppressed by way of a magnetically nonconductive material.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: March 26, 2019
    Assignee: ROBERT BOSCH GMBH
    Inventors: Stefan Cerny, Ralf Kromer
  • Patent number: 10145346
    Abstract: An electromagnetic fuel valve has a valve chamber, a valve element and a valve seat assigned to the valve element. The valve chamber is delimited by an electromagnetic drive which moves the valve element relative to the valve seat. The drive includes a receiving housing for a coil carrier with an electrical coil. A magnet core is inserted into the coil carrier and has an end section facing the valve element. At an open sealing end facing toward the valve chamber, a sealing element is arranged between the end section of the magnet core and the receiving housing. To achieve good sealing, that end section of the magnet core situated in the sealing element expands the sealing element and compresses the material thereof radially against the edge of the sealing end of the receiving housing to seal the valve chamber to the interior space of the receiving housing.
    Type: Grant
    Filed: February 11, 2015
    Date of Patent: December 4, 2018
    Assignee: Andreas Stihl AG & Co. KG
    Inventors: Jens Ramler, Felix Mayer, Wolfgang Layher, Georg Maier, Takumi Nonaka, Hiroyuki Oka, Hideki Watanabe
  • Patent number: 9903357
    Abstract: The present disclosure relates to a device for a high-pressure pump for a motor vehicle comprising a valve housing and an actuator assembly arranged substantially along the central axis of the valve housing. The actuator assembly may include a recess extending from a first end. The actuator assembly may include at least one hydraulic compensation opening extending through a wall of the actuator assembly from the recess into an exterior region. It may also include a volume body in the actuator recess spaced apart from the actuator assembly and extending into a region of the at least one hydraulic compensation opening. The volume body may be immovable relative to the valve housing. The actuator assembly may move along the central axis relative to the valve housing and relative to the volume body.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: February 27, 2018
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Burhan Dagdelen, Andreas Muehlbauer, Rainer Weber, Stephan Bias
  • Patent number: 9821323
    Abstract: A droplet forming device (1) for discharging a droplet in a flying fashion from a nozzle (32), the device includes a liquid chamber (29) that is communicated with the nozzle (32) and is supplied with a liquid material (37), a plunger rod (6) having a tip (34) that is moved to advance and retreat within the liquid chamber (29), a spring (8) that applies a biasing force to the plunger rod (6), a pressurization chamber (11) that is supplied with a pressurized gas (10) acting to retreat the plunger rod (6), a pressure source (15) that supplies the pressurized gas (10) to the pressurization chamber (11), and a controller (45). The droplet forming device (1) further includes a magnetic field generating mechanism (21, 22) that generates an attraction force to act in an advancing direction when the plunger rod (6) approaches a most advanced position thereof.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: November 21, 2017
    Assignee: MUSASHI ENGINEERING, INC.
    Inventor: Kazumasa Ikushima
  • Patent number: 9605636
    Abstract: A fuel injector may include a central longitudinal axis and may be arranged in a cylinder head of a combustion engine. The fuel injector has an injector body and an adjustment device, the adjustment device including a ring element configured to be arranged in a recess of a cylinder head between the injector body and the cylinder head to align the fuel injector relative to the recess in radial direction. The ring element comprises a magnetic material. A fuel-injection system is also disclosed that includes a cylinder head of an internal combustion engine and a fuel injector as disclosed above.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: March 28, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Ileana Romeo, Matteo Soriani, Francesco Lenzi
  • Patent number: 9506435
    Abstract: 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.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: November 29, 2016
    Assignee: Caterpillar Inc.
    Inventors: Jayaraman Venkataraghavan, John McDonnell, Nadeem Bunni, Christopher D. Hanson
  • Patent number: 9316192
    Abstract: In a gaseous-fuel-injector device for internal-combustion motor-vehicle engines, the valve body of the injector device has one or more auxiliary openings giving out onto an internal surface of the valve body in which the valve member of the injector device is slidably mounted. Said auxiliary openings are arranged in such a way as to enable the inflow of the gaseous fuel coming from the supply, not only into the inlet opening of the injector device, but also into the internal area of the valve body in which the valve member is slidably mounted, so as to obtain an effect of ventilation and flushing, by means of the flow of gaseous fuel, in an area where there tend to form deposits of the oily substances contained in the gaseous fuel.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: April 19, 2016
    Assignee: FIAT POWERTRAIN TECHNOLOGIES S.P.A.
    Inventors: Silvio Canale, Antonio Gravina
  • Publication number: 20150108237
    Abstract: 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.
    Type: Application
    Filed: July 25, 2014
    Publication date: April 23, 2015
    Inventor: Roy Edward McAlister
  • Patent number: 8991783
    Abstract: In a fuel injection valve, it is intended to enhance valve-closing responsivity while maintaining durability (anti wear property) of a collision portion between a stationary core and a movable core and valve-opening responsivity. An annular end face 106A of the movable core 106 in the fuel injection valve is provided with a collision portion 106C that collides to a stationary core 107 when the movable core is magnetically attracted toward the stationary core side and a non-collision portion that keeps a fluid gap between both cores at an area of an outer side or an inner side from the collision portion. The annular end faces of the stationary core and the movable core are coated with platings 30, 31 having anti wear property, and at least one of the platings of the stationary core and the movable core is formed in such a manner that the thickness thereof at the collision portion 106C is to be thicker and the thickness thereof at the non-collision portion is to be thinner.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: March 31, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Motoyuki Abe, Masahiko Hayatani, Tohru Ishikawa, Takehiko Kowatari, Atsushi Takaoku, Yasuo Namaizawa, Yusuke Irino
  • Patent number: 8967502
    Abstract: A dual fuel injector may be used to injector both gas and liquid fuel into a cylinder of a compression ignition engine. An injector body defines a first set of nozzle outlets, a second set of nozzle outlets, a first fuel inlet and a second fuel inlet. A dual solenoid actuator includes a first armature, a first coil, a second armature and a second coil that share a common centerline. The dual solenoid actuator has a non-injection configuration at which the first armature is at an un-energized position and the second armature is at an un-energized position. The dual solenoid actuator has a first fuel injection configuration at which the first fuel inlet is fluidly connected to the first set of nozzle outlets, the first armature is at an energized position and the second armature is at the un-energized position.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: March 3, 2015
    Assignee: Caterpillar Inc.
    Inventors: Hoisan Kim, Mark F. Sommars, Xiangdong Ding
  • Patent number: 8960573
    Abstract: A device is described for injecting fuel, which includes a valve body, an outwardly opening valve needle, which is disposed in the valve body in a pressure chamber filled with fuel, to which pressurized fuel is supplied; a restoring element, which returns the valve needle to an original position; an electromagnetic actuator, which is disposed in an actuator chamber for actuating the valve needle; and a diaphragm, which is disposed in the actuator chamber and subdivides the actuator chamber into a first, fuel-filled region and a second, fuel-free region in fluid-tight manner, and which subdivides the valve needle into an injection-side portion and an actuator-side portion, the injection-side portion of the valve needle including a pressure-compensation plunger, which separates the pressure chamber from the first, fuel-filled region of the actuator chamber, the actuator being disposed in the second, fuel-free region.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: February 24, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Ralph Engelberg
  • Publication number: 20150001319
    Abstract: A solenoid valve for metering a fluid into an intake tract (1) of an engine, said solenoid valve comprising a solenoid assembly (2), an armature (3) interacting with the solenoid assembly (2) and a stroke-movable valve disc (4) connected to the armature (3) for opening and closing at least one through-flow aperture (6) formed in a valve plate (5).
    Type: Application
    Filed: June 30, 2014
    Publication date: January 1, 2015
    Inventors: Juergen Foerster, Kai Kroeger, Okke Venekamp, Stephan Dirnberger
  • Patent number: 8919674
    Abstract: A fuel injection valve that promotes formation of thin membranes of fuel within injection holes and promotes atomization of spray is obtained. Holes provided in an injection hole plate 11 are combined injection holes 16 formed by partially overlapping two or more single injection holes 15a, 15b, 15c from an upstream side to a downstream side of the injection hole plate 11, each of the single injection holes is a circular hole, the single injection hole has an injection hole angle ? defined by a tilt angle of a center axis line connecting an entrance part center and an exit part center relative to a plate thickness direction of the injection hole plate 11, areas of exit parts 16b are larger than areas of entrance parts 16a in the combined injection holes 16, and the combined injection holes 16 are formed by press working.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: December 30, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kyosuke Watanabe, Naoya Hashii, Tsuyoshi Munezane
  • Patent number: 8910882
    Abstract: 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.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: December 16, 2014
    Assignee: Caterpillar Inc.
    Inventors: Bryan D. Moore, Daniel R. Ibrahim, Sana Mahmood, Adam Duresky, Christopher D. Hanson
  • Patent number: 8893989
    Abstract: A fuel injector, particularly for the direct injection of fuel into a combustion chamber of an internal combustion engine, has an actuator for actuating a valve needle; at a spray-discharge end, the valve needle having a valve-closure member that, together with a valve-seat surface configured on a valve-seat member, forms a sealing seat at a seat-contact point; the valve-seat member and/or the valve-closure member being provided with at least one stiffness-reducing element.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: November 25, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Martin Mueller
  • Patent number: 8807463
    Abstract: 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.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: August 19, 2014
    Assignee: McAlister Technologies, LLC
    Inventor: Roy Edward McAlister
  • Patent number: 8770498
    Abstract: A fuel injector includes a solenoid coil, which cooperates with an armature acted upon by a restoring spring, the armature forming an axially displaceable valve part together with a valve needle. A valve-closure member, which forms a sealing seat together with a valve-seat body, is provided on the valve needle. Furthermore, a reliable sealing of a thin-walled valve sleeve or of the magnetic coil exists that is made of a sealing body that is secured beneath the magnetic coil. The sealing body is tetragonal in cross-section, in particular, it has a trapezoid-like shape, and is put in between the magnetic coil and a valve housing. In its installed state, the sealing body is clamped and compressed. In its compressed state, the sealing body assumes an elliptical or egg-shaped cross-section.
    Type: Grant
    Filed: July 26, 2006
    Date of Patent: July 8, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Ferdinand Reiter, Christof Vogel, Chris Louis, Gerald Scheday
  • Patent number: 8727243
    Abstract: In an electromagnetic fuel injection valve, a valve body guide hole (15) which is connected to a valve seat (8) of a valve seat member (3) and slidably guides a valve body (14), and a large-diameter hole (17) which is connected to a rear end of the valve body guide hole (15) via a tapered hole (16) and has a diameter larger than that of the valve body guide hole (15), are provided in the valve seat member (3) of a valve housing (2), whereas a first longitudinal hole (19) which communicates with a fuel intake cylinder (26) is provided in a fixed core (5); a second longitudinal hole (20) which communicates with the first longitudinal hole (19) is provided from a movable core (12) to a valve shaft (13); a traverse hole (21) which opens the second longitudinal hole (20) to the large-diameter hole (17) is provided in the valve shaft (13); and a relationship between the diameter (D1) of the large-diameter hole (17) and the diameter (D2) of the valve body guide hole (15) satisfies D2/D1<0.6.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: May 20, 2014
    Assignee: Keihin Corporation
    Inventors: Kenichi Saito, Kazuhiko Sato
  • Patent number: 8720488
    Abstract: In order to achieve high opening speeds in a dry running gas valve with electromagnetic actuation, it is provided to arrange the engagement point of the magnet armature 22 and the limit stop at the radially inner guide region 16 of the valve element 2. Due to the resulting reduced deflection, the valve element can be built more compact and lighter and the residual air gap can be reduced, which allows higher opening speeds.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: May 13, 2014
    Assignee: Hoerbiger Kompressortechnik Holding GmbH
    Inventors: Gerhard Ranegger, Martin Geh
  • Patent number: 8690118
    Abstract: A solenoid actuated device such as a fuel injector includes an actuator body having a plurality of body pieces, and a single-pole solenoid actuator assembly positioned at least partially within the actuator body. The single-pole solenoid actuator assembly includes a one-piece compound armature housing having a load carrying component clamped between the first body piece and the second body piece, and a flux carrying component. The load carrying component includes a high structural strength and a low flux permeability, and the flux carrying component includes a low structural strength and a high flux permeability. A method of making a solenoid actuated device includes placing an armature at a sliding radial air gap with a flux carrying component of a one-piece compound armature housing, and establishing a structural load path by placing a load carrying component of the compound armature housing between a first actuator body piece and a second actuator body piece.
    Type: Grant
    Filed: January 8, 2010
    Date of Patent: April 8, 2014
    Assignee: Caterpillar Inc.
    Inventors: Nadeem N. Bunni, Jayaraman K. Venkataraghavan, Stephen R. Lewis
  • Patent number: 8671912
    Abstract: The invention relates to an injector, in particular, a common-rail injector for injection of fuel into a combustion chamber of an internal combustion engine. An injection valve element, adjustable between a closed position and an open position, is controllable by means of a control valve. The control valve has a control valve element, adjustable between a closed position and an open position by means of an actuator, which in the closed position is an at least almost pressure-equalized and has a sealing line which cooperates in a sealing manner with a control valve seat. The sealing line of the control valve element is lifted off the control valve seat in the open position and hence opens fuel flow from a high pressure region to a low pressure region of the injector. According to the invention, the control valve element has a support region extending over the sealing line in a radial direction to the high pressure region.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: March 18, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Nadja Eisenmenger, Hans-Christoph Magel
  • Patent number: 8662472
    Abstract: In an electromagnetic fuel injection valve, a valve housing includes: a cylinder-shaped valve seat member having a valve seat in its front end portion; a magnetic cylindrical body coaxially connected to a rear end portion of the valve seat member; a nonmagnetic cylindrical body coaxially and liquid-tightly welded to a rear end of the magnetic cylindrical body; and a hollow cylindrical stationary core coaxially and liquid-tightly welded to a rear end of the nonmagnetic cylindrical body. A valve assembly is housed in the valve housing and includes: a valve body capable of being seated on the valve seat; and a movable core connected to a rear end of the valve body and opposed to a front end of the stationary core. The valve body and the valve seat member are respectively made of different martensitic stainless steels so that a hardness of the valve body is higher than that of the valve seat member.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: March 4, 2014
    Assignee: Keihin Corporation
    Inventors: Katsuyuki Suzuki, Gen Kato, Junichi Miyashita, Kenichi Tsunota
  • Patent number: 8646749
    Abstract: An electromagnetically actuatable valve, e.g., a fuel injector for fuel injection systems, includes an electromagnetic actuating element having a solenoid, a fixed core, a valve jacket, and a movable armature for actuating a valve closing body, which cooperates with a valve seat surface provided on a valve seat body. In addition, the valve has a restoring spring for resetting the valve closing body to its resting position on the valve seat surface. The restoring spring and an internal longitudinal bore hole of the armature are paired in such a way that the armature is guided during its axial movement only along the restoring spring.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: February 11, 2014
    Assignee: Robert Bosch GmbH
    Inventor: Ferdinand Reiter
  • Patent number: 8616473
    Abstract: An injector (10) includes a valve body (16), an armature tube (20) in the valve body, a seal disk (24) carried by the armature tube, a spring (30) associated with the seal disk, a seat (34) defining an outlet. The seat includes a seat surface (38) engaged with the seal disk that is biased by the spring, when the injector is in a closed position, preventing fuel from exiting the outlet. A movable armature (42) is coupled to an end of the armature tube. An adjusting tube (48) engages an end of the spring. An inlet tube (50) defining an inlet has an end surface that is spaced from the periphery of the armature in the closed position. An electromagnetic coil (58) is disposed about a portion of the inlet tube. A flux member (60) is associated with the coil. A housing (62) covers at least a portion of coil.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: December 31, 2013
    Assignee: Continental Automotive Systems, Inc.
    Inventor: Perry Robert Czimmek
  • Patent number: 8602321
    Abstract: The invention relates to a ball valve for adjusting a flow of a fluid medium. The ball valve includes a valve seat and a rounded closing element, in particular a valve ball. Furthermore, the ball valve has an inlet with a choke valve and one diffuser arranged between the choke valve and the valve seat. The diffuser includes a constriction on the side facing the valve seat.
    Type: Grant
    Filed: January 3, 2008
    Date of Patent: December 10, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Gerhard Girlinger, Frank Traxel, Roland Mitter
  • Patent number: 8480014
    Abstract: A fluid injection valve having an inlet which is set up to receive fluid from a supply line and is connected to a chamber, a fluid outlet which is connected to the chamber, is set up to allow fluid to flow out of the fluid injection valve and has a valve arrangement having a valve seat and a valve element, wherein the valve element is set up to perform opening and closing movements relative to the valve seat, a linear actuator which is set up to move the valve element relative to the valve seat, and a spring arrangement which exerts on the valve element a force which is dependent on the fluid pressure prevailing in the chamber.
    Type: Grant
    Filed: December 6, 2007
    Date of Patent: July 9, 2013
    Assignee: Compact Dynamics GmbH
    Inventors: Andreas Gruendl, Bernhard Hoffmann, Friedrich Mörtl
  • Patent number: 8459575
    Abstract: A fuel injector has an injector body and a control rod, which is movable in the injector body along an axis to control the opening/closing of a nozzle that injects fuel into a cylinder of the engine; the injector body houses a metering servovalve having a control chamber, which is axially delimited by the control rod and communicates with an inlet and with a discharge channel; the metering servovalve is provided with a shutter, which slides axially on an axial guide, from which the discharge channel exits, to open and close the discharge channel and, in consequence, vary the pressure in the control chamber; the discharge channel has at least two restrictions having calibrated passage sections and arranged in series with each other to divide the pressure drop along the discharge channel.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: June 11, 2013
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventors: Mario Ricco, Raffaele Ricco, Sergio Stucchi, Onofrio De Michele
  • Patent number: 8453951
    Abstract: A fuel injector that includes a sliding armature, decoupled armature, or flying armature movable between a pintle stop and a housing stop. Flying armatures are generally used to increase the total force applied to the pintle stop for lifting the pintle off a nozzle seat to open the fuel injector. When the fuel injector is turned off, a housing stop is arranged to absorb kinetic energy present in the flying armature so that the kinetic energy is not imparted to the nozzle seat.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: June 4, 2013
    Assignee: Delphi Technologies, Inc.
    Inventors: Robert B. Perry, Michael Raymond Salemi, Kevin J. Allen, Kevin Richard Keegan
  • Patent number: 8430343
    Abstract: A fuel injection valve includes a needle valve having an engagement part, and a movable core having an engagement part to be engaged with the engagement part of the needle valve. One of the engagement part of the needle valve and the engagement part of the movable core is defined by two inner faces of a recess opposing to each other in an axis direction, and the other engagement part is defined by two outer faces of a projection opposing to the inner faces, respectively. The projection is movable between the inner faces in the axis direction in a state that the projection is located in the recess.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: April 30, 2013
    Assignee: Denso Corporation
    Inventor: Hiroaki Nagatomo
  • Publication number: 20130075501
    Abstract: Improving the injection fuel mass accuracy of fuel injector, it is necessary to make the fuel injector perform seat valve opening and closing operation quickly. When the shapes of a fixed core and an anchor are optimized to improve the responsiveness of a magnetic flux, it is necessary to ensure a sufficient fuel path area while preventing adhesion by making the adherence phenomenon rarely occur between an end face of the anchor and an end face of the fixed core. A through hole passes through an anchor forming an armature of an electromagnetic fuel injector from a face of the anchor where the anchor faces a fixed core to a back face where the through hole has a large-diameter portion and a small-diameter portion, and the large-diameter portion is located in an upstream part and is offset to the outer periphery with respect to the small-diameter portion.
    Type: Application
    Filed: July 9, 2012
    Publication date: March 28, 2013
    Inventors: Takao Miyake, Ryo Kusakabe, Motoyuki Abe, Masahiro Soma
  • Patent number: 8371516
    Abstract: In a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine, an injection valve member for opening and closing at least one injection opening is triggered by a control valve embodied as a magnet valve. On the armature of the magnet valve, a sealing face is embodied that for closing the control valve is positionable into a valve seat. The armature of the magnet valve is movable, without armature guidance, between an upper and a lower stroke stop. Because the sealing face, which for closing the control valve is positionable into the valve seat, is embodied on the armature, an additional closing element of the kind provided in the prior art can be dispensed with.
    Type: Grant
    Filed: March 19, 2007
    Date of Patent: February 12, 2013
    Assignee: Robert Bosch GmbH
    Inventor: Nadja Eisenmenger
  • Patent number: 8366018
    Abstract: Oil intensified common rail injectors that combine a common-rail non-intensified injector with an oil-intensified injector. The invention also uses fuel (common rail) pumps that are commercially available since the injector does not rely on this pump for intensification function. Also, since the pressure of the fuel pump is limited to lower than the intensified pressure, the injected pressure is limited to the unit injector; this eases the rail and tube requirements to this lower fuel rail pressure. The injector operates up to this limited pressure with no intensification. Also a separate oil system is configured to operate a hydraulic intensifier. Thus the system is able to achieve very high injection pressure without common rail pump, rail, fitting and jumper tube limits. The oil system does not need to operate or run unless these elevated pressures are required. Embodiments using direct needle control are disclosed.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: February 5, 2013
    Assignee: Sturman Industries, Inc.
    Inventors: Daniel Donald Giordano, Tibor Kiss, James A. Peña, John Mathew Quinlan
  • Patent number: 8366026
    Abstract: A high speed gas valve apparatus including a reservoir for holding a gas having a charge port for filling the reservoir with the gas and an outlet for releasing the gas from the reservoir, a rod slidingly housed in the valve apparatus, the rod including a sealing means operatively arranged to engage with the outlet of the valve chamber for sealing the reservoir when the valve is in a closed position, a pneumatic actuator, wherein a piston of the pneumatic actuator is coupled to the rod, an electro-magnetic actuator coupled to the rod, and wherein the gas is released from the reservoir via the outlet when the apparatus is in an open position, and the valve transitions from the closed position to the open position by activating the pneumatic and electro-magnetic actuators to move the rod away from the outlet.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: February 5, 2013
    Assignee: Microsys Technologies, Inc.
    Inventors: Xiaodong Wang, Colin Williams
  • Patent number: 8245956
    Abstract: Electromagnetic fuel injector for gaseous fuels comprising: an injection nozzle controlled by an injection valve; a movable shutter to regulate the flow of fuel through the injection valve; an electromagnetic actuator, which is suitable to move the shutter between a closed position and an open position of the injection valve and comprises a fixed magnetic pole, a coil suitable to induce a magnetic flux in the magnetic pole, and a movable anchor suitable to be magnetically attracted by the magnetic pole; an absorption element, which is made of an amagnetic elastic material and is arranged between the magnetic pole and the anchor; and a protective element, which is made of a magnetic metal material having high surface hardness and is interposed between the absorption element and the anchor.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: August 21, 2012
    Assignee: Magneti Marelli
    Inventors: Pasquale Dragone, Andrea Cobianchi, Mirco Vignoli
  • Patent number: 8162240
    Abstract: An actor device (14) for an injector has a solid-state actuator (17) and a first and a second end plate (18, 16) which are coupled to the solid-state actuator (17) at first and, respectively, at second axial end of the solid-state actuator (17). Further, the actor device (14) has a sliding body (24) which is rigidly coupled to the first end plate (18) and which extends to the second end plate (16). The sliding body (24) radially surrounds the solid-state actuator (17) and has a clearance to the solid-state actuator (17) and to the second end plate (16).
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: April 24, 2012
    Assignee: Continental Automotive GmbH
    Inventor: Antonio Bondi
  • Publication number: 20120067982
    Abstract: A fuel injector that includes a sliding armature, decoupled armature, or flying armature movable between a pintle stop and a housing stop. Flying armatures are generally used to increase the total force applied to the pintle stop for lifting the pintle off a nozzle seat to open the fuel injector. When the fuel injector is turned off, a housing stop is arranged to absorb kinetic energy present in the flying armature so that the kinetic energy is not imparted to the nozzle seat.
    Type: Application
    Filed: September 22, 2010
    Publication date: March 22, 2012
    Applicant: DELPHI TECHNOLOGIES, INC.
    Inventors: ROBERT B. PERRY, MICHAEL RAYMOND SALEMI, KEVIN J. ALLEN, KEVIN RICHARD KEEGAN
  • Patent number: 8128009
    Abstract: The objective of the present invention is to realize the structure, of a fuel injection valve, in which bouncing of the needle can be suppressed and the armature position can be fixed while the valve is closed, without increasing the number of components and the number of processes. In a fuel injection valve including an armature that is repelled or attracted by a core, by de-energizing or energizing a coil; a needle that opens or closes a valve seat in accordance with a reciprocal travel of the armature; and a valve-closing spring that biases the needle so as to close the valve, when the coil is de-energized, the needle and the armature are fixed in such a way that the armature can travel in an axis direction by a predetermined amount with respect to the needle, and the coil is preliminarily energized while the fuel injection valve is closed by the needle.
    Type: Grant
    Filed: November 18, 2008
    Date of Patent: March 6, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akio Shingu, Masayuki Aota, Tsuyoshi Munezane
  • Patent number: 8128005
    Abstract: The invention relates to a fuel injector comprising an injector housing having a pressure chamber from which fuel subjected to a high pressure is injected into a combustion chamber of an internal combustion engine when the pressure in a control chamber expands into a pressure relief chamber by a control valve device. The aim of the invention is to create a fuel injector which has a long service life even though subjected to high pressures. To this end, the injector includes a low-pressure supply line which is connected to a low-pressure return line by a purge path extending through the pressure relief chamber.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: March 6, 2012
    Assignee: Robert Bosch GmbH
    Inventor: Hans-Christoph Magel
  • Publication number: 20120024987
    Abstract: A device is for the administration of injectable products with controlled flow rate, with a container (23) in the form of both a syringe and an ampoule preloaded with the injectable product, an injection port (25) and a control valve (21) for controlling the outlet rate and pressure arranged between the injectable products and the injection port (25). A device for reducing the outlet flow rate depends on the pressure increase applied during the administration of the injectable product, the administration being moderated by closing the valve (21) when the pressure exceeds a predetermined limit. A device prevents the backflow of fluids during the administration of the injectable product. The valve (21) can be positioned both in the container (23) and at an injection end (27) including the injection port (25) which is coupled to the container (23).
    Type: Application
    Filed: January 29, 2010
    Publication date: February 2, 2012
    Applicant: INNOVA SALUD DESARROLLOS SANITARIOS, S.L.
    Inventor: Elisabeth Nägele Nacken
  • Patent number: 8104698
    Abstract: In relation to injectors used for internal-combustion engines, it is important to decrease valve closing delay time and also the minimum injection quantity, while these are affected by remanent magnetism in the fixed core, surface tension of the fuel, etc. With reference to a fuel injection valve with a pipe-shaped member to enclose a fixed core and a movable part and further with coils and yokes to cover up the above pipe-shaped member, the anchor to drive the movable member has a plurality of through holes for fuel passage extending in the axial direction, while these through holes are arranged at a certain intervals in the circumferential direction, and projections formed to constitute a contacting surface to touch the fixed core arranged randomly in between the through holes.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: January 31, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Masahiko Hayatani, Motoyuki Abe, Toru Ishikawa, Eiichi Kubota, Takehiko Kowatari
  • Patent number: 8061632
    Abstract: A fuel injector for internal combustion engines provided with a fuel feeding channel, the feeding channel having an axis and an injection outlet; an injection valve to control the outlet; an injection valve having a shutter arranged inside the feeding channel to define, within the feeding channel, a first fuel introduction section, the shutter being movable from and to a closing position along the feeding channel, which has a second section; and an annular sealing seat arranged on the feeding channel upstream of the outlet; an elastic member for normally keeping the shutter in the closing position; an actuator mechanism connected to the shutter to displace the shutter itself from the closing position and to an opening position of the outlet; and a hydraulic resistance that is provided along the feeding channel upstream of the annular sealing seat to balance the forces acting upon the shutter.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: November 22, 2011
    Assignee: Magneti Marelli S.p.A.
    Inventors: Stefano Petrecchia, Andrea Cobianchi
  • Patent number: 8038079
    Abstract: An injection system for injecting fuel has: a housing for containing the fuel, with a first and second aperture, a piezo actuator having a first and second face plate aperture, a controllable piezo stack arranged between the face and base plate, a sealed casing laterally surrounding at least the piezo stack and arranged between the face and base plate and a transmission means arranged in an actuator interior space having a fluid, a first contact device guided through the first aperture and face plate aperture, a second contact device guided through the second aperture and face plate aperture, a first sealing device surrounding the contact device near the apertures and providing a seal between the housing interior and exterior space and a second sealing device surrounding the contact devices near the face plate apertures and providing a seal between the housing interior space and the actuator interior space.
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: October 18, 2011
    Assignee: Continental Automotive GmbH
    Inventor: Richard Pirkl
  • Patent number: 8038083
    Abstract: The invention relates to a fuel injector for injecting fuel into a combustion chamber, having a solenoid valve for controlling a mini-servo valve. A movable armature can be placed in a sealing fashion on a valve seat in a lower armature chamber, wherein in addition, the mini-servo valve is held in an injector body and seals a control line against a flat seat. By means of the flat seat, during an actuation of the solenoid valve, the control line can be relieved of pressure from a high fuel pressure to a return pressure into at least one return line. A mechanism for reducing pressure oscillations are provided in the at least one return line, which includes at least one diaphragm cell which is held in a recess and which is placed in fluidic connection with the at least one return bore. A fuel injector with the mechanism for reducing pressure oscillations is therefore created in the at least one return line which operates without a leakage flow and has a simple and effective function.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: October 18, 2011
    Assignee: Robert Bosch GmbH
    Inventors: Dieter Junger, Nadja Eisenmenger, Christian Faltin
  • Patent number: 8037869
    Abstract: The injector comprises a balanced metering servovalve for controlling a rod for opening/closing a nebulizer. The servovalve has a valve body having a control chamber provided with an outlet passage that is opened/closed by an axially mobile open/close element. The open/close element is made of a single piece with a bushing separate from an armature plate of an electromagnet. The bushing is coupled to a stem in an axially slidable way for closing an exhaust duct in communication with the outlet passage The open/close element is kept in a closed position by a spring that acts upon the bushing through an intermediate body connected thereto. The armature plate can be displaced with respect to the bushing between a flange of the intermediate body and a shoulder of the bushing, for eliminating the rebounds of the open/close element upon closing of the servovalve.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: October 18, 2011
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventors: Mario Ricco, Raffaele Ricco, Sergio Stucchi, Onofrio De Michele, Marcello Gargano, Domenico Lepore, Carlo Mazzarella