Injection Nozzle Type Patents (Class 239/584)
  • Patent number: 10718304
    Abstract: It is prevented that residual fuel left in the vicinity of an injection nozzle outlet is carbonized to cause adherence of the carbonized fuel as deposit and changing of a spray pattern or an injection flow rate. A fuel injection valve includes a seat portion on which a valve body is seated and a seat portion in which an injection hole for injecting fuel downstream from the seat portion is formed, in which a concave surface denting in a direction opposite to a fuel injecting direction is formed on an outer peripheral side away from the injection hole at an end face located downstream of the seat member, and the concave surface is formed such that a material surface in an outer peripheral region has a larger wettability for the fuel than in an inner peripheral region.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: July 21, 2020
    Assignee: Hitachi, Ltd.
    Inventors: Eiji Ishii, Kazuki Yoshimura, Taisuke Sugii
  • Patent number: 10487784
    Abstract: A device and a method for improving combustion are disclosed. In an embodiment the device includes a combustion chamber including at least one combustion chamber inlet for feeding in fuel or air or the fuel/air mixture, a reactor chamber connected upstream of the combustion chamber, the reactor chamber comprising a plasma generator, wherein the plasma generator is a piezoelectric transformer configured to operate with a low voltage and a control apparatus for the plasma generator, wherein the device is configured in such a way that even before a start of an actual combustion process at least one gaseous component in the reactor chamber is enriched with radicals and ions by the plasma generator.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: November 26, 2019
    Assignees: EPCOS AG, RELYON PLASMA GMBH
    Inventors: Georg Kügerl, Markus Puff, Christoph Auer, Stefan Nettesheim
  • Patent number: 10253712
    Abstract: The present disclosure provides a method for operating an injector of an internal combustion engine, the nozzle needle of said injector being operated by a piezo actuator by means of a servo valve. The method may include eliminating the idle travel of the piezo actuator by maintaining a permanent direct force connection between the piezo actuator and the servo valve, so that a change in force on the servo valve due to a change in pressure in the valve chamber when the servo valve is opened and closed and when the nozzle needle of the injector is closed is always transmitted to the piezo actuator as a change in force, detecting the resulting change in voltage and/or capacitance of the piezo actuator, and ascertaining parameters with which the injection quantity which is output by the injector is regulated based on the result of the detection.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: April 9, 2019
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventor: Hong Zhang
  • Patent number: 10156295
    Abstract: A piezoelectric linear actuator includes a laminated piezoelectric actuator, a lower support member that supports the laminated piezoelectric actuator, a pressing member that biases the laminated piezoelectric actuator from the top thereof, a guide member connected to the lower support member to guide the pressing member; and a displacement transmission member which includes a pair of displacement transmission plates, an adjustment screw connected to the pair of displacement transmission plates, an output section connected to the pair of displacement transmission plates, and an elastic body that biases the output section downward.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: December 18, 2018
    Assignee: Fujikin Incorporated
    Inventors: Naofumi Yasumoto, Ryousuke Dohi, Kouji Nishino, Nobukazu Ikeda, Kohei Shigyou
  • Patent number: 10132281
    Abstract: A fluid injector for injecting fuel into a combustion engine includes a valve, a tubular valve body and an orifice disc, wherein the valve comprises valve seat and a movable opening device in order to open and close the valve, wherein the orifice disc is arranged at the valve seat on the opposite side of the opening device and is configured to shape a spray of the fluid dispensed by the fluid injector in an open position of the valve. A compensation element and a fastening element are provided, wherein the compensation element is arranged between the valve seat and the fastening element, wherein the fastening element is configured and arranged to fasten the compensation element to the valve in the valve body in a pre-stressed manner.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: November 20, 2018
    Assignee: CONTINENTAL AUTOMATIVE GMBH
    Inventors: Stefano Filippi, Marco Bartoli, Antonio Liuzzo, Tommaso Galgani
  • Patent number: 10125734
    Abstract: The invention relates to a method for nitriding a component of a fuel injection system, said component being loaded under high pressure and being composed of an alloyed steel. The method comprises the following steps: —activating the component in inorganic acid, —pre-oxidizing the component in oxygen-containing atmosphere between 380° C. and 420° C., —nitriding the component between 520° C. and 570° C. at a high first nitriding potential KN,1 in the ? nitride range, —nitriding the component between 520° C. and 570° C. at a lower second nitriding potential KN,2 in the ?? nitride range.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: November 13, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Christian Paulus, Heinrich Werger
  • Patent number: 9835124
    Abstract: The invention relates to a fuel injector for internal combustion engines for injecting fuel at high pressure, comprising a pressure chamber formed in an injector body, in which pressure chamber a nozzle needle is arranged in a longitudinally movable manner, which nozzle needle has a cone region tapered in a combustion chamber direction and a pin region having a constant diameter d23 at a combustion-chamber end of the nozzle needle. The injector body has a substantially conical nozzle needle seat, from which a first injection opening extends, and a blind hole, which adjoins the nozzle needle seat on the combustion chamber side. The blind hole has a cylindrical segment, which has the diameter d31, and a hole base, from which a second injection opening extends. The cone region of the nozzle needle interacts with the nozzle needle seat and thereby opens and closes the first injection opening and the second injection opening with respect to the pressure chamber.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: December 5, 2017
    Assignee: Robert Bosch GmbH
    Inventors: Andreas Koeninger, Gerhard Suenderhauf
  • Patent number: 9828957
    Abstract: A fuel injector 100 includes a nozzle member 60 having a fuel passage 60a leading to an injection port 60b; a valve main body 51 adapted to reciprocate for opening and closing the fuel passage 60a; an elastic portion 56 elastically deformable in closing the fuel passage 60a by movement of the valve main body 51 in a closing direction, the elastic member being attached to one of the nozzle member 60 and the valve main body 51 and adapted to be abutted against the other of the nozzle member 60 and the valve main body 51 to close the fuel passage 60a by moving the valve main body 51 in the closing direction; and a stopper 70 adapted to restrict movement of the valve main body 51 in the closing direction by being abutted against the valve main body 51, the stopper 70 being formed of material different from the nozzle member 60.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: November 28, 2017
    Assignee: DENSO CORPORATION
    Inventors: Tomoki Fujino, Takashi Furukawa, Yusuke Hongo
  • Patent number: 9719474
    Abstract: 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.
    Type: Grant
    Filed: January 2, 2014
    Date of Patent: August 1, 2017
    Assignee: Regents of the University of Minnesota
    Inventors: Zongxuan Sun, Chienshin Wu
  • Patent number: 9556844
    Abstract: A nozzle for a member of a fuel combustion system of an engine includes a hollow nozzle body. The nozzle body includes an outer surface, an inner surface, and an orifice surface. The outer surface defines an outer opening. The inner surface defines an interior chamber and an inner opening. The orifice surface defines an orifice passage extending between, and in communication with, the outer opening and the inner opening. The orifice passage is in communication with the interior chamber via the inner opening. The orifice surface includes a boundary surface and a protrusion. The protrusion projects from the boundary surface radially inwardly into the orifice passage.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: January 31, 2017
    Assignee: Caterpillar Inc.
    Inventors: Matthew I. Rowan, Lucas Burger
  • Patent number: 9192395
    Abstract: An improved apparatus and method of securing body tissue may be performed with a robotic mechanism. The robotic mechanism may be utilized to tension a suture with a predetermined force and urge a suture retainer toward body tissue with a predetermined force. Ultrasonic vibratory energy may be transmitted to the suture retainer to effect a gripping of the suture by the suture retainer. The body tissue may be secured with a staple. Legs of the staple may be bonded together to secure the staple. The legs of the staple may be bonded together by transmitting ultrasonic vibratory energy to the legs of the staple. A tissue positioning assembly may be used to hold the body tissue in a desired position. Images of the body tissue being secured may be obtained using various known devices including one or more endoscopes, a fluoroscope, a magnetic resonance imaging device, and/or other known imaging devices.
    Type: Grant
    Filed: May 7, 2013
    Date of Patent: November 24, 2015
    Assignee: P Tech, LLC
    Inventor: Peter M Bonutti
  • Patent number: 9175640
    Abstract: A fuel injector assembly is provided herein. The fuel injector assembly includes an insulated delivery conduit in fluidic communication with a fuel pump and a conductive enclosure at least partially surrounding the insulated delivery conduit. The fuel injector assembly further includes a seal positioned between the insulated delivery conduit, conductive enclosure, and the fuel injector outlet with radial and axial forces against an exterior surface of the insulated delivery conduit, interior surface of the conductive enclosure, and the exterior surface of fuel injector outlet.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: November 3, 2015
    Assignee: Ford Global Technologies, LLC
    Inventors: Stephen Raymond Ryan, Brendan John Butcher
  • Patent number: 9108214
    Abstract: A dispensing module and method of dispensing an adhesive includes a dispenser body having a valve element and a nozzle. The nozzle includes a nozzle member, a sealing zone, and a valve seat. The nozzle member includes a liquid passageway having a bore, a cylindrical surface, a second converging surface, and a shoulder. The sealing zone is defined by the cylindrical surface and extends from the bore toward the shoulder and engages the valve element to close a first volume of the liquid passageway from the inlet. The valve seat is defined by the shoulder and the second converging surface and has a circular line of contact that engages the valve element to close a second volume of the liquid passageway from the inlet. The first volume reduces to the second volume as the valve element moves distally along the sealing zone for discharging the adhesive.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: August 18, 2015
    Assignee: Nordson Corporation
    Inventors: John M. Riney, Joel E. Saine
  • Publication number: 20150144710
    Abstract: 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.
    Type: Application
    Filed: May 29, 2013
    Publication date: May 28, 2015
    Inventor: Mark S. Graham
  • Publication number: 20150144094
    Abstract: 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.
    Type: Application
    Filed: October 6, 2014
    Publication date: May 28, 2015
    Inventor: Roy Edward McAlister
  • Publication number: 20150136099
    Abstract: A valve (4, 4?) for a fuel system for a combustion engine: A ball retainer (26) is provided with a cavity (28) to accommodate a ball (22). The ball (22) has a first seal surface (30) to cooperate with and abut sealingly against a seat (32). The ball retainer (26) has a secondary seal surface (34) to cooperate with and abut sealingly against the seat (32) when the ball (22) is not in the ball retainer (26). Also, a method for controlling a fuel system for a combustion engine.
    Type: Application
    Filed: April 10, 2013
    Publication date: May 21, 2015
    Inventor: Kim Kylström
  • Publication number: 20150136877
    Abstract: When injection-hole inlets and injection-hole outlets are projected vertically onto an X-Y plane (N) perpendicular to a valve-seat axial center, an injection-hole arrangement angle (A), which is formed by a straight line (a) passing through a center of the injection-hole inlet of a reference injection hole and the valve-seat axial center and a straight line (b) passing through a center of the injection-hole inlet of the injection hole neighboring the reference injection hole and the valve-seat axial center on the plane (N), is set so as to become smaller as being closer to a Y-axis. A fuel turn angle (a) on a wide-angle side, which is formed by the straight line (a) and a straight line (c) passing through a center of the injection-hole inlet and a center of the injection-hole outlet on the plane (N), has a relationship: 90°<?<180°.
    Type: Application
    Filed: August 9, 2012
    Publication date: May 21, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yukitaka Sakata, Tsuyoshi Munezane, Naoya Hashii, Keisuke Ito, Kyosuke Watanabe, Shota Kawasaki
  • Publication number: 20150122917
    Abstract: A fluid injector includes a body associated with an outlet of the injector. An inlet tube is coupled to the body and has an open end for receiving fluid to be injected. An inlet cup has an open end and covers the open end of the inlet tube and also covers a portion of the body. The injector includes sealing structure including a primary seal providing a seal between the inlet cup and the inlet tube, a secondary seal between the body and the inlet cup and constructed and arranged to prevent liquid that is external to the injector from entering an interior of the injector through the open end of the inlet cup, and a surface feature on the body or on the inlet cup constructed and arranged to compress a portion of the secondary seal between the inlet cup and the body.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 7, 2015
    Applicant: Continental Automotive Systems, Inc.
    Inventors: Keith Aaron Shaw, Robert Wayne McFarland
  • Publication number: 20150122918
    Abstract: A nozzle needle for an injector for injecting fuel includes at least one guiding section with a recess and a guiding surface configured to rest against an inner surface of a nozzle body of the injector, the recess at least partially delimiting the guiding surface and being configured to allow a flow of fuel along the guiding section, and the guiding surface being guided about the longitudinal axis of the nozzle needle in a helical manner.
    Type: Application
    Filed: December 19, 2012
    Publication date: May 7, 2015
    Applicant: Continental Automotive GmbH
    Inventors: Stephan Aurich, Carsten Hampel, Thomas Sarfert, Ferdinand Loebbering
  • Publication number: 20150115069
    Abstract: A fuel injection valve that injects fuel directly into a cylinder of an internal combustion engine includes: a nozzle inserted into a fuel injection valve fitting hole formed in the cylinder; a cylindrical tip seal holder attached to the nozzle; and an annular seal member that is fitted to the tip seal holder and seals between an inner circumferential surface of the fuel injection valve fitting hole and an outer circumferential surface of the tip seal holder.
    Type: Application
    Filed: June 7, 2013
    Publication date: April 30, 2015
    Inventors: Shusuke Akazaki, Atsushi Takaoku, Masahiro Soma
  • Publication number: 20150115055
    Abstract: 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.
    Type: Application
    Filed: December 19, 2014
    Publication date: April 30, 2015
    Inventors: David R. Wager, Gordon P. McTaggart-Cowan, David K. Mumford, Sandeep Munshi
  • Publication number: 20150115068
    Abstract: A fuel injector configured as a high-pressure injection valve for the direct injection of fuel into a combustion chamber includes: a housing having an housing end face on the combustion chamber side; an actuator; a valve-closure member operable by the actuator; at least one outlet orifice in the housing end face on the combustion chamber side for the fuel, the valve-closure member selectively closing or opening the outlet orifice; and a ring provided round about the outlet orifice in the housing end face on the combustion chamber side.
    Type: Application
    Filed: May 24, 2013
    Publication date: April 30, 2015
    Inventors: Martin Kochanowski, Detlef Nowak, Guido Pilgram, Rainer Ecker
  • Publication number: 20150101572
    Abstract: A fluid injection assembly for a combustion engine includes an injector body having a notch, an injector cup, which radially encloses an axial end of the injector body and has a projecting part, and a spring clip arranged between the injector body and the injector cup. The spring clip includes a ground plate, at least one spring element, and at least one holding element engaging behind the projecting part of the injector cup. The ground plate is arranged in the notch of the injector body. The injector body and the injector cup are coupled together by the spring clip by mechanical interaction via the projecting part and the notch, respectively.
    Type: Application
    Filed: October 7, 2014
    Publication date: April 16, 2015
    Inventors: Giandomenico Serra, Daniel Marc, Andrea Puccini
  • Publication number: 20150102134
    Abstract: A method of fabricating an injector of a combustion engine includes providing a first base body and a second base body for a valve needle of the injector, forming the first base body such that a first base part with a first stop face is formed, providing an armature with a bore, forming the second base body such that a second base part with a second stop face and a third stop face is formed, disposing a section of the first base part and a section of the second base part in a bore of the armature, disposing the first and second base parts relative to each other such that the first stop face abuts the second stop face, and establishing a fixed coupling between the first and second base parts, wherein the armature is movable between the first stop face and the third stop face.
    Type: Application
    Filed: October 7, 2014
    Publication date: April 16, 2015
    Inventors: Stefano Filippi, Mauro Grandi, Francesco Lenzi, Valerio Polidori
  • Publication number: 20150096301
    Abstract: The invention relates to a fuel injector (101) for a turbine engine such as an airplane turboprop or turbojet, the injector comprising a body (102) including admission means (104) for admitting fuel under pressure, a stop valve (107) mounted in the body (102) downstream from the admission means (104) and designed to open at a first determined fuel pressure and to remain open beyond that first pressure in order to feed a primary fuel circuit (136), and a metering valve (115) mounted in the body (102) downstream from the stop valve (107) and designed to open above a second determined fuel pressure, greater than the first pressure, and to remain open above the second pressure in order to feed a secondary fuel circuit (117). The stop valve (107) and the metering valve (115) form a common movable assembly (133).
    Type: Application
    Filed: October 6, 2014
    Publication date: April 9, 2015
    Applicant: SNECMA
    Inventors: Christophe CHABAILLE, Sebastien Christophe LOVAL
  • Publication number: 20150096538
    Abstract: A fluid injector for injecting fuel into a combustion engine includes a valve, a tubular valve body and an orifice disc, wherein the valve comprises valve seat and a movable opening device in order to open and close the valve, wherein the orifice disc is arranged at the valve seat on the opposite side of the opening device and is configured to shape a spray of the fluid dispensed by the fluid injector in an open position of the valve. A compensation element and a fastening element are provided, wherein the compensation element is arranged between the valve seat and the fastening element, wherein the fastening element is configured and arranged to fasten the compensation element to the valve in the valve body in a pre-stressed manner.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 9, 2015
    Inventors: Stefano Filippi, Marco Bartoli, Antonio Liuzzo, Tommaso Galgani
  • Publication number: 20150076256
    Abstract: A system and method for operating a valve for an engine utilizing a high pressure actuating fluid that is used in the operation of fuel injectors. A pump may be used to increase the pressure of the actuating fluid, such as, for example, to 4000 psi. At least a portion of this high pressure actuating fluid may be delivered to a fuel injector. Additionally, at least a portion of the pressure actuating fluid may be delivered to an electro-hydraulic actuator. According to certain embodiments, the flow of the high pressure actuating fluid to the actuator may be controlled by spool valve. The spool valve may be part of the actuator. The use of the high pressure actuating fluid to operate the actuators may allow for a reduction in the actuators' size, which may allow for the actuator to be located in the valve.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 19, 2015
    Inventor: Oswald Baasch
  • Patent number: 8978364
    Abstract: An injector for injecting a reagent into an exhaust stream includes an outer tube extending through an electromagnet and surrounding an inner tube. A first end of the inner tube is sealingly fixed to an inner surface of the outer tube. A guide member and an orifice plate are each sealingly fixed to the inner surface of the outer tube. A second end of the inner tube is aligned by the guide member. A moveable valve member includes a pintle head guided by the inner surface of the outer tube to align the valve member with an orifice extending through the orifice plate.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: March 17, 2015
    Assignee: Tenneco Automotive Operating Company Inc.
    Inventors: Keith Olivier, Thomas P. Mallin, Matthew L. Roessle, Rick Simpson
  • Publication number: 20150069151
    Abstract: A fluid injection valve includes a fluid inlet tube with a recess and a valve body including a central longitudinal axis. The valve body includes a cavity with a fluid outlet portion. The injection valve also includes a valve needle received in the recess and in the cavity. The valve needle is axially displaceable with respect to the fluid inlet tube and the valve body for preventing a fluid flow through the fluid outlet portion in a closing position and releasing the fluid flow through the fluid outlet portion in other positions. The injection valve includes a spring element arranged in the recess and operable to interact with the valve needle for biasing the valve needle in axial direction towards its closing position, wherein the spring element is configured such that a spring stiffness of the spring element depends on a pressure of fluid in the recess.
    Type: Application
    Filed: September 9, 2014
    Publication date: March 12, 2015
    Inventors: Stefano Filippi, Mauro Grandi, Francesco Lenzi, Valerio Polidori, Marco Bartoli
  • Publication number: 20150069144
    Abstract: The present technology relates generally to amplification for fuel injectors. In some embodiments, an injector for introducing gaseous or liquid fuel into a combustion chamber includes an injector body having a base portion configured to receive fuel into the body and a valve coupled to the body. The valve can be movable to an open position to introduce fuel into the combustion chamber. The injector further includes a valve operator assembly. The valve operator assembly can include a valve actuator coupled to the valve and movable between a first position and a second position upon receipt of an initial motion. The valve operator assembly can also include an amplifier configured to receive the initial motion from the valve actuator, amplify the initial motion, and transfer the amplified motion to the valve.
    Type: Application
    Filed: May 15, 2014
    Publication date: March 12, 2015
    Applicant: McAlister Technologies, LLC
    Inventor: Roy Edward McAlister
  • Publication number: 20150060572
    Abstract: In a nozzle plate for a fuel injection device which can inject fuel flowed out from a fuel injection port of the fuel injection device in a sufficiently atomized state, a portion of fuel which flows in the inside of a nozzle hole impinges on an interference element, is sharply bent so as to flow backward by an impinging surface of the interference element which is formed of an annular recessed surface, is made to impinge on fuel which intends to advance straightly and pass through the nozzle hole and the orifice, and forms the flow of the fuel which intends to advance straightly and pass through the nozzle hole and the orifice into a turbulent flow. As a result, the nozzle plate for a fuel injection device further enhances the level of the atomization of fuel.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 5, 2015
    Inventor: Koji NOGUCHI
  • Publication number: 20150060573
    Abstract: A valve assembly for an injection valve includes a valve body with a central longitudinal axis, the valve body having a valve body groove extending circumferentially around the valve body and being designed to take in a gasket, the valve body groove having a first wall section and a second wall section, the wall sections configured to be coupled to the gasket in a manner that the valve assembly is sealingly coupable with a cylinder head of a combustion engine, and an injection nozzle enabling a fluid flow through the valve assembly. The second wall section is arranged relative to the first wall section in axial direction away from the injection nozzle. The first wall section extends to a first radius and the second wall section extends to a second radius, and the first radius is bigger than the second radius.
    Type: Application
    Filed: December 13, 2012
    Publication date: March 5, 2015
    Inventors: Marco Mechi, Roberto Ricci, Nicola Iannaccone, Luigi Gargiulo
  • Publication number: 20150060574
    Abstract: A component having an insert part and an overmold that extends at least partly around the insert part, the insert part having at least one groove and the groove having an undercut at at least one edge, and the overmold at least partly filling the groove.
    Type: Application
    Filed: February 18, 2013
    Publication date: March 5, 2015
    Applicant: Robert Bodch GmbH
    Inventor: Ralf Kromer
  • Publication number: 20150053795
    Abstract: A fuel injector body comprising a fuel line defined by a passage therethrough and a ceramic cylinder disposed within the passage. The ceramic cylinder is a tube including a hollow passage for fuel flow therethrough. In addition, a method of protecting the fuel lines of a fuel injector is disclosed, comprising the steps of inserting a ceramic cylinder into at least passage for a fuel line of the fuel injector and adhering the ceramic cylinder within the passage.
    Type: Application
    Filed: January 29, 2014
    Publication date: February 26, 2015
    Applicant: WALBAR INC
    Inventor: Sandy Spoone
  • 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: 20150041566
    Abstract: A needle body for a fuel injector that controls or prevents high pressure fuel leaks by dynamically controlling the size of the clearance between a longitudinal bore in a nozzle body and the needle that travels along the bore. The longitudinal bore passes through a body portion and a clearance control protrusion of the needle body. The clearance control protrusion extends from the body portion into a nozzle chamber of a nozzle section of the fuel injector. The clearance control protrusion is configured to prevent expansion of the clearance that is typically associated with hydraulic forces caused by pressurized fuel in the clearance. The clearance control protrusion is configured so that as fuel pressure in the nozzle chamber increases, hydraulic forces act against an outer surface of the clearance control protrusion to prevent expansion of the portion of the clearance positioned within the clearance control protrusion.
    Type: Application
    Filed: April 26, 2012
    Publication date: February 12, 2015
    Applicant: International Engine Intellectual Property Company , LLC
    Inventors: William Yunbiao Shen, Erik Jordan Hansen
  • Publication number: 20150040867
    Abstract: A fuel injector for a fuel injection system includes a nozzle body defining a nozzle body chamber, a needle movably received within the nozzle body chamber for movement between a seated position and a raised position, and a needle sleeve at least partially surrounding the needle and at least partially defining a control volume. The needle moves from the seated position to the raised position in response to a pressure differential between the control volume and the nozzle body chamber. When the needle is in the seated position clearance exists between the needle sleeve and the needle thereby permitting fuel flow between the control volume and the nozzle body chamber, and when the needle is in the raised position, the needle sleeve deforms to reduce the clearance and restrict fuel flow between the control volume and the nozzle body chamber.
    Type: Application
    Filed: March 18, 2013
    Publication date: February 12, 2015
    Applicant: International Engine Intellectual Property Company, LLC
    Inventors: Abhijit P. Upadhye, Joset Morell
  • Publication number: 20150034742
    Abstract: A fuel injector includes (i) a body including a distal end portion forming an injection port, a diameter reduction portion, and a diameter expansion portion, and (ii) a seal member attached to at least the diameter reduction portion of both the diameter reduction portion and the diameter expansion portion. When the body is inserted into an attachment hole communicating with a combustion chamber of an internal combustion engine, the seal member seals between an inner peripheral surface of the attachment hole and an outer peripheral surface of the body. The seal member includes a first taper portion chamfered and provided at an outer periphery of a distal end portion of the seal member in a case where the distal end portion of the seal member is placed at a position relatively close to the injection port.
    Type: Application
    Filed: July 15, 2014
    Publication date: February 5, 2015
    Applicant: DENSO CORPORATION
    Inventors: Keigo OOHATA, Nobuo OOTA
  • Publication number: 20150028137
    Abstract: A component which includes a base part, a sealing element, an insert element, and an extrusion coat which extends at least partially around the insert element and at least partially around the base part, the insert element being disposed between the extrusion coat and sealing element.
    Type: Application
    Filed: February 18, 2013
    Publication date: January 29, 2015
    Applicant: Robert Bosch GmbH
    Inventor: Ralf Kromer
  • Publication number: 20150028136
    Abstract: A valve for metering a fluid, e.g., for the injection of fuel in a fuel-injection system of internal combustion engines, includes: an intake for the fluid; a metering orifice for the fluid; and an elongated, hollow-cylindrical flow channel leading from the intake to the metering orifice, the flow channel having an outer channel wall and an inner channel wall. In order to influence the hydraulic resonances resulting from the structural design in such a way that an excitation of critical structural modes caused by the installation is prevented, the flow channel is subdivided into at least two channel sections which are separated from one another, and a flow connection for the fluid is established between consecutive channel sections.
    Type: Application
    Filed: January 30, 2013
    Publication date: January 29, 2015
    Applicant: ROBERT BOSCH GMBH
    Inventors: Michael Fischer, Andrej Elsinger, Michael Mayer, Pablo Antonio Napal Jimenez
  • Publication number: 20150028135
    Abstract: A lever device for a fuel injection valve includes a housing with a housing recess, at least one lever element arranged in the housing recess, a drive element arranged in the housing recess and coupled to the lever element(s) in order to act upon said at least one lever element in a direction of a force-action axis, and an output element arranged in the housing recess and coupled to the lever element(s) such that this output element is moveable in the force-action axis direction by the at least one lever element. Each lever element includes a coupling section designed or arranged such that the lever element is coupled to the housing, or to the output element, in a rotationally-fixed manner with respect to the force-action axis.
    Type: Application
    Filed: December 19, 2012
    Publication date: January 29, 2015
    Inventors: Stefan Lehmann, Hellmut Freudenberg, Stefan Kohn, Robert Kuchler, Manuel Hannich, Roland Feigi, Wolfgang Wechler, Matthias Wicke
  • Publication number: 20150021418
    Abstract: A lever device for a fuel injection valve includes a housing with a housing recess, at least one lever element arranged in the housing recess and having a coupling section coupled to a section of the housing, a drive element arranged in the housing recess and coupled to the at least one lever element to act upon the at least one lever element in the direction of a force-action axis, and an output element arranged in the housing recess and coupled to the at least one lever element such that the output element may be moved in the force-action axis direction by the at least one lever element. The coupling section of the lever element has at least one recess that defines at least two coupling section contact surfaces spaced apart from one another and resting against the housing section.
    Type: Application
    Filed: December 19, 2012
    Publication date: January 22, 2015
    Inventors: Stefan Lehmann, Hellmut Freudenberg, Stefan Kohn, Robert Kuchler, Manuel Hannich, Roland Feigl, Wolfgang Wechler, Matthias Wicke
  • Publication number: 20150021417
    Abstract: The invention relates to a fuel injector (1) for an internal combustion engine. The fuel injector (1) is comprised of an injector body (5) with an injector tip (6). The injector tip (6) is used for the injection of fuel into the combustion chamber (4) of the internal combustion engine. For this reason, the injector tip (6) is designed so as to be at least partially extended into the combustion chamber (4). If the injector tip (6) is designed to be flush with the surface of the combustion chamber (4), the injector tip (6) is arranged so that it directly faces toward the combustion chamber (4). Furthermore, the injector tip (6) is at least partially coated with a first oxide layer (9). According to the invention, a catalytic second oxide coating (10) composed of cerium oxide (CeO2), praseodymium oxide (PrO2), zirconium oxide (ZrO2), or any bi-component combination thereof is applied on top of the first oxide coating (9).
    Type: Application
    Filed: July 17, 2014
    Publication date: January 22, 2015
    Inventors: Robert Ukropec, Oliver Berkemeier, Clemens Maria Verpoort
  • Publication number: 20150021416
    Abstract: A fuel injector for supplying fuel to a fuel consuming devise includes a fuel inlet for receiving the fuel, a nozzle tip for dispensing the fuel from the fuel injector, a conduit for communicating the fuel from the fuel inlet to the nozzle tip, a valve seat, and a valve selectively seatable and unseatable with the valve seat for selectively preventing and permitting fuel flow out of the nozzle tip. The nozzle tip includes a non-circular recess on a downstream side thereof and a metering hole on an upstream side thereof opening into the non-circular recess to allow fuel to exit the nozzle tip, the metering hole having a smaller area than the non-circular recess.
    Type: Application
    Filed: July 22, 2013
    Publication date: January 22, 2015
    Inventors: MICHAEL R. RANEY, DANIEL L. VARBLE, AXEL H. BERNDORFER, STEPHAN BREUER, JAMES ZIZELMAN
  • Publication number: 20150020778
    Abstract: A fuel injector includes a needle moveable along a central axis to initiate and terminate an injection event, and a nozzle body that receives the needle. The nozzle body includes a needle seat, a nozzle sac, and a passageway between the needle seat and the nozzle sac. The passageway defines a passageway inner surface. The nozzle sac has a curved, non-spherical profile and defines a sac inner surface that extends away from a distal end of the passageway inner surface.
    Type: Application
    Filed: March 14, 2013
    Publication date: January 22, 2015
    Applicant: International Engine Intellectual Property Company LLC
    Inventors: Abhijit P. Upadhye, Josef Morell
  • Publication number: 20150014427
    Abstract: 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.
    Type: Application
    Filed: February 6, 2012
    Publication date: January 15, 2015
    Applicant: International Engine Intellectual Property Company, LLC
    Inventors: William Yunbiao Shen, Yan Tan, Qursheed Hussain Mohammed, Keith Steven Schulz
  • Publication number: 20150014436
    Abstract: A valve for metering fluid having a valve assembly which meters the fluid, and a hydraulic coupler assigned to the valve assembly. The coupler has a housing cup having a cup bottom, cup wall and cup opening; a piston is guided inside the housing cup in axially displaceable manner and delimits a fluid-filled coupler gap in the direction of the cup bottom and delimits an annular gap in the direction of the cup wall; and a cap-shaped diaphragm having a cap bottom and cap shell, which covers the annular gap at the cup opening by the cap bottom and overlaps the cup wall of the housing cup by the cap shell, and is fixed in place at the piston and cup wall in fluid-tight manner.
    Type: Application
    Filed: January 25, 2013
    Publication date: January 15, 2015
    Applicant: Robert Bosch GmbH
    Inventors: Thomas Koch, Dietmar Schmieder
  • Publication number: 20150013643
    Abstract: A fuel injection assembly for a combustion engine includes an injector body, an injector cupradially enclosing an axial end of the injector body, and a spring clip coupling the injector cup with the injector body. The spring clip includes a ground plate with a main extension plane perpendicular to a longitudinal axis of the fuel injection assembly, a recess extending inwards from a lateral end of the ground plate to a bottom part having a circle-segment contour extending through an angle between 270° to 180°, and at least one spring element fixed to the ground plate. The spring element of the spring clip has a contact region with the injector cup, and the ground plate has a contact region with the injector body, whereby the spring element exerts a spring force on the injector cup. The ground plate of the spring clip extends into a cutout of the injector cup.
    Type: Application
    Filed: June 2, 2014
    Publication date: January 15, 2015
    Inventors: Giandomenico Serra, Daniel Marc
  • Publication number: 20150000284
    Abstract: A cap assembly for a bundled tube fuel injector includes an impingement plate and an aft plate that is disposed downstream from the impingement plate. The aft plate includes a forward side that is axially separated from an aft side. A tube passage extends through the impingement plate and the aft plate. A tube sleeve extends through the impingement plate within the tube passage towards the aft plate. The tube sleeve includes a flange at a forward end and an aft end that is axially separated from the forward end. A retention plate is positioned upstream from the impingement plate. A spring is disposed between the retention plate and the flange. The spring provides a force so as to maintain contact between at least a portion of the aft end of the tube sleeve and the forward side of the aft plate.
    Type: Application
    Filed: July 1, 2013
    Publication date: January 1, 2015
    Inventors: Jeffrey Scott LeBegue, Patrick Benedict Melton, James Harold Westmoreland, III, James Scott Flanagan
  • Publication number: 20150001318
    Abstract: A fuel injection valve includes a fixed core formed into a cylindrical shape, a valve plunger that can move closer to or away from the fixed core, a retainer formed with a substantially C-shaped cross-section having one long straight opening extending linearly along the entire length in an axial direction while having a tapered face on an outer periphery of each of opposite end parts in the axial direction and is press fitted into the fixed core, and a return spring provided between the retainer and the valve plunger. A cutout is provided in peripherally opposite end parts of the retainer for increasing the width between opposite end parts in a longitudinal direction of the opening. This enables the degree of freedom in selecting the material for forming a retainer while preventing the occurrence of galling or the generation of swarf when press fitting the retainer into the fixed core.
    Type: Application
    Filed: January 8, 2013
    Publication date: January 1, 2015
    Inventor: Takuya Honjo