With Discharge Modifier* Patents (Class 239/533.12)
  • Patent number: 10677208
    Abstract: Provided is a fuel injector that is capable of reducing penetration. The fuel injector of the present invention includes a valve body having a valve body side seat surface, a valve seat side seat surface that abuts on the valve body side seat surface, and an injection hole that is provided downstream of a position at which the valve body side seat surface abuts on the valve seat side seat surface. The valve body has a projection that is formed from the valve body side seat surface toward the injection hole, and the projection is formed to be smaller in a direction of fuel flow between seats than a radius of an upstream opening surface of the injection hole.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: June 9, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Tomoyuki Hosaka, Eiji Ishii, Yoshihiro Sukegawa, Taisuke Sugii, Kazuki Yoshimura, Kazuhiro Oryoji, Masayuki Saruwatari
  • Patent number: 10677209
    Abstract: In an injection hole set, primary and secondary injection holes are formed to satisfy the following relationship: ???t1+?t2?0.87×P{circumflex over (?)}0.52, where ? (deg) is an injection-hole-to-injection-hole angle, which is an angle formed between a primary central axis of the primary injection hole and a secondary central axis of the secondary injection hole; ?t1 (deg) is a primary taper angle, which is an angle formed between outlines of a primary injection hole inner wall of the primary injection hole in a cross section of the primary injection hole inner wall; ?t2 (deg) is a secondary taper angle, which is an angle formed between outlines of a secondary injection hole inner wall of the secondary injection hole in a cross section of the secondary injection hole inner wall; and P (MPa) is an average pressure of the fuel in a fuel passage at a time of injecting the fuel from the injection holes.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: June 9, 2020
    Assignee: DENSO CORPORATION
    Inventor: Noritsugu Kato
  • Patent number: 10662910
    Abstract: A valve assembly for a fuel pump is provided. The valve assembly may include an inlet valve limited to a first range of travel extending between a fully closed position and a fully opened position of the inlet valve, a valve pin coupled to the inlet valve, an armature pin selectively engaging the valve pin, and an armature coupled to the armature pin and limited to a second range of travel extending between an engaged position and a disengaged position that is less than the first range of travel.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: May 26, 2020
    Assignee: Caterpillar Inc.
    Inventors: Glenn B. Cox, Stephen R. Lewis, Adrienne M. Brasche, Venkata R. Tatikonda
  • Patent number: 10502169
    Abstract: A fuel injector for an internal combustion engine is disclosed. The fuel injector is installable in a cylinder head bore of a cylinder head of the engine and has a body region arranged to be received within the cylinder head bore, and a head region arranged to extend outside the cylinder head bore to protrude from the cylinder head when the injector is installed in the cylinder head bore. The injector includes a first valve needle arranged to control the injection of a gaseous fuel from a first outlet, a second valve needle arranged to control the injection of a liquid fuel from a second outlet, a gaseous fuel inlet for admitting the gaseous fuel to the injector, and a liquid fuel inlet port for admitting the liquid fuel to the injector. The gaseous fuel inlet is disposed in the body region of the injector, and the liquid fuel inlet port is disposed in the head region of the injector. The injector can also include an internal accumulator volume so that an external fuel rail is not necessary.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: December 10, 2019
    Assignee: WESTPORT POWER INC.
    Inventors: George A. Meek, Lukhbir Panesar
  • Patent number: 10495043
    Abstract: A fuel injector nozzle comprising a plurality of holes formed therethrough connecting one side of the nozzle with an opposite side of the nozzle. Each of the holes comprises a hole entry on the one side of the nozzle having a first shape, a hole exit on the opposite side of the nozzle having a second shape, and a hole wall connecting the hole entry to the hole exit. The hole exit is smaller than the hole entry, and the hole wall comprises a side that is continuously curved from the hole entry to the hole exit.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: December 3, 2019
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Barry S. Carpenter, Jaime B. Willoughby, Jennifer J. Sahlin
  • Patent number: 10480473
    Abstract: A fuel injector and method are disclosed including an injector body with a fuel sac, and an end positioned into a combustion chamber. A main fuel passage, having a varying cross-sectional area forming a reduced pressure region, fluidically couples the fuel sac to the combustion chamber. One or more additional passages fluidically couple the reduced pressure region with one or both of the fuel sac and the combustion chamber.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: November 19, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Xiaogang Zhang, Mark Meinhart, Jianwen James Yi, George Papaioannou
  • Patent number: 10415524
    Abstract: An injector, comprising, an injector body comprising, an inner wall that defines an injector cavity for fluid, at least one inlet channel into the injector cavity, and at least one outlet channel from the injector cavity, a plunger that defines at least one passageway between the injector cavity and the at least one outlet channel, the plunger being movable longitudinally in the injector cavity between at least: a first open arrangement in which the at least one passageway is positioned to direct fluid into the at least one outlet channel at a first position, and a second open arrangement in which the at least one passageway is positioned to direct fluid into the at least one outlet channel at a second position different from the first position.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: September 17, 2019
    Assignee: Cummins Inc.
    Inventors: Bradlee J. Stroia, Lester L. Peters, David L. Buchanan, Rajesh K. Garg, Wei Ning
  • Patent number: 10408180
    Abstract: Among all combinations of two injection holes, in a combination in which when the injection holes are offset such that their central axes are coincident with each other in inlet openings, an inter-injection hole angle formed by the central axes is minimized, the inter-injection hole angle between the two injection holes is represented as ?a min[deg], taper angles, which are formed by the respective contours of the injection hole inner walls in the cross sections along the virtual planes including the central axes of the two injection holes that allow the inter-injection hole angle to be minimized, are represented as ?a1 and ?a2[deg], and when fuel is injected from the injection holes, average pressure of the fuel in the fuel passage is represented as P[Mpa], and the injection holes are formed so as to satisfy a relationship: ?a min??a1+?a2+0.5×P0.6.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: September 10, 2019
    Assignee: DENSO CORPORATION
    Inventor: Noritsugu Kato
  • Patent number: 10400683
    Abstract: A large two-stroke turbocharged compression-ignited internal combustion crosshead engine with a plurality of cylinders has at least one pressure booster for each cylinder for boosting fuel pressure, two or more electronically controlled fuel valves for each cylinder with an inlet of the two or more electronically controlled fuel valves being connected to an outlet of the at least one pressure booster. An electronic control unit is connected to the at least one pressure booster and the two or more electronically controlled fuel valves. The electronic control unit is configured to determine a start time for a fuel injection event, activate the at least one pressure booster ahead of the determined start time and pen the two or more electronically controlled fuel valves at the determined start time.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: September 3, 2019
    Assignee: MAN ENERGY SOLUTIONS, FILIAL AFMAN ENERGY SOLUTIONS SE, TYSKLAND
    Inventors: Niels Kjemtrup, Stefan Mayer, Peter Hagen
  • Patent number: 10400682
    Abstract: A large two-stroke turbocharged compression-ignited internal combustion crosshead engine with a plurality of cylinders has at least one pressure booster for each cylinder for boosting fuel pressure, two or more electronically controlled fuel valves for each cylinder with an inlet of the two or more electronically controlled fuel valves being connected to an outlet of the at least one pressure booster. An electronic control unit is connected to the at least one pressure booster and the two or more electronically controlled fuel valves. The electronic control unit is configured to determine a start time for a fuel injection event, activate the at least one pressure booster ahead of the determined start time and pen the two or more electronically controlled fuel valves at the determined start time.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: September 3, 2019
    Assignee: MAN ENERGY SOLUTIONS, FILIAL AF MAN ENERGY SOLUTIONS SE, TYSKLAND
    Inventors: Niels Kjemtrup, Stefan Mayer, Peter Hagen
  • Patent number: 10352285
    Abstract: In a nozzle plate, a portion of fuel flowing out from a fuel injection port of the fuel injection device is atomized by impinging on an interference body. At the same time, the flow of the portion of fuel is sharply bent and impinges on fuel which straightly advances and passes through a nozzle hole and an orifice thus turning the flow of fuel into a turbulent flow. Further, both end portions of the orifice form non-rounded sharpened corner portions. Hence, a liquid film of fuel injected from the corner portions and areas in the vicinity of the corner portions of the orifice is formed into a thin sharpened and pointed state whereby an end portion of the liquid film of fuel injected from the orifice is easily atomized due to a friction between the end portion of the liquid film of fuel and air.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: July 16, 2019
    Assignee: ENPLAS CORPORATION
    Inventor: Koji Noguchi
  • Patent number: 10344728
    Abstract: In a nozzle plate of the present invention, a part of fuel flowing out from a fuel injection port of a fuel injection device is atomized by colliding with an interference body, is rapidly bent in a flowing direction, and collides with the fuel that is flowing straight through a nozzle hole and an orifice to make the fuel that flows straight through the nozzle hole and the orifice turbulent. The orifice includes a corner portion which is defined by an outer edge portion of the interference body and has a pointed shape without roundness at a part of an opening edge. The corner portion makes an end portion of a liquid film of the fuel passing through the orifice into a pointed shape for ease of atomization by friction with air.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: July 9, 2019
    Assignee: ENPLAS CORPORATION
    Inventor: Koji Noguchi
  • Patent number: 10337448
    Abstract: Methods and systems are provided for moving an injector needle of a fuel injector assembly from a first position to a second position to provide a first fuel injection at the first position, and moving the needle from the second position to the third position to provide a second fuel injection at the third position, and moving the needle back to the first position via the second position, and providing a third fuel injection at the second position. In this way, three fuel injections may be performed during a single actuation cycle of the injector during a single combustion cycle.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: July 2, 2019
    Assignee: Ford Global Technologies, LLC
    Inventor: Xiaogang Zhang
  • Patent number: 10330061
    Abstract: A fuel injector is provided. The fuel injector includes a sleeve having a first end proximate an outlet; a piston slidingly received in the sleeve, the piston having a first end proximate the outlet; a pumping chamber at least partially defined by the sleeve between the first end of the piston and the outlet; and a normally-open inlet valve through which fuel passes to enter the pumping chamber.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: June 25, 2019
    Assignee: PICOSPRAY, LLC.
    Inventor: Lihang Nong
  • Patent number: 10260470
    Abstract: In a fuel injector 10, a first injection hole 155a and a second injection hole 155b having reference inside diameters Dn1, Dn2 different from each other are formed as a plurality of injection holes 155. In such a configuration, an L/D value obtained by dividing the flow channel length Ln1 of the first injection hole 155a by the reference inside diameter Dn1 of the first injection hole 155a agrees to an L/D value obtained by dividing the flow channel length Ln2 of the second injection hole 155b by the reference inside diameter Dn2 of the second injection hole 155b.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: April 16, 2019
    Assignee: DENSO CORPORATION
    Inventor: Hiroki Kaneta
  • Patent number: 10208722
    Abstract: A first injection hole included by an injection nozzle is formed such that an angle that a first virtual line passing a first inner-wall-side center point away from a center axis by a predetermined first distance, forms with the center axis becomes a first injection angle, and an angle that first injection hole inner walls form becomes a first open angle. A second injection hole included by the injection nozzle is formed such that an angle that a second virtual line passing a second inner-wall-side center point away from the center axis by a predetermined second distance, forms with the center axis becomes a second injection angle that is smaller than the first injection angle, and an angle that second injection hole inner walls form becomes a second open angle that is larger than the first open angle.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: February 19, 2019
    Assignee: DENSO CORPORATION
    Inventor: Noritsugu Kato
  • Patent number: 10159793
    Abstract: An exemplary embodiment of the invention is a nozzle, for use in an injection device, that projects material at an ultra-high velocity. The nozzle includes an integrally formed body having an interior passageway that has a longitudinal axis. The input of the nozzle is configured to interface with a cartridge, and the output is configured to be placed proximate to a target. The passageway includes a taper, and its path length, from an initial diameter to a position along the passageway where the passageway first reaches a smallest diameter, is at least 0.5 mm. The taper of the passageway defines a shape, in a plane that includes the longitudinal axis, that is a continuous and monotonically decreasing function of distance along the longitudinal axis in a direction of flow through the nozzle.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: December 25, 2018
    Assignee: Portal Instruments, Inc.
    Inventors: Nikola Kojic, Bridget Hunter-Jones, Ian W. Hunter
  • Patent number: 10087860
    Abstract: Methods and systems are provided for improving engine startability during cold-start conditions, when operating with gasoline fuels, alcohol fuels, or blended fuels. In one example, a method of engine cold-start control may include initiating fuel injection for cylinder combustion with manifold pressure lowered via intake throttle adjustments. The manifold pressure is lowered based on an optimization between cylinder charge reduction and improved fuel boiling at the lower pressure.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: October 2, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Gopichandra Surnilla, Jianwen James Yi, Steven Wooldridge, Alexander O'Connor Gibson, Gary Alan Coulson, Foo Chern Ting
  • Patent number: 10077750
    Abstract: Systems and methods are provided for operation of fuel injectors within an applied-ignition, direct-injection internal combustion engine. In one example, a needle of a fuel injector is moved from a retracted position to an extended position relative to a plurality of injection holes of a nozzle of the fuel injector, with at least one injection hole being separated from a fuel supply system earlier than each other injection hole. In a partially retracted position, fuel flow along a first side of the needle is decreased relative to fuel flow along a second side of the needle.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: September 18, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Oliver Berkemeier, Klemens Grieser, Jan Linsel, Kay Hohenboeken
  • Patent number: 10047714
    Abstract: An injection hole of a fuel injector includes: an inner hole section extending from an inner surface of a bottom wall of an injector tip obliquely away from a first side relative to a normal line of the inner surface to define a first inner side wall surface on the first side forming an obtuse angle with the inner surface and a second inner side wall surface on a second side opposite to the first side forming an acute angle with the inner surface; a middle hole section including a first middle side wall surface extending obliquely from the first inner side wall surface toward the first side; and an outer hole section including a first outer side wall surface extending obliquely from the first middle side wall surface toward the first side. A recess is formed on a radially outer side of an inner end of the inner hole section.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: August 14, 2018
    Assignee: Honda Motor Co., Ltd.
    Inventors: Hiroki Kobayashi, Kazuji Ono
  • Patent number: 10006427
    Abstract: A centrifugal conical-spray atomization device. A head portion of a needle valve is provided with a throttling guidance cone. A seat surface of the needle valve mates with seat surface of a spin chamber to open and close a spray hole in a pulsatory manner. A plurality of tangential holes are provided between a pressure chamber and a spin chamber. After being spun tangentially by the spin chamber, fuel is sprayed from a spray opening with a tangential force, forming a hollow umbrella-like fuel film without a compact fuel spray core. The umbrella-like fuel film has a controllable penetration distance and spins at a high speed in a combustion chamber. The centrifugal conical-spray atomization device not only exhibits a wide adjustable range of fuel flow, but is able to automatically open and close the spray hole, while carbon deposition would not easily form to block the spray hole.
    Type: Grant
    Filed: August 19, 2013
    Date of Patent: June 26, 2018
    Inventor: Kangmei Wang
  • Patent number: 10001101
    Abstract: In a fuel injection valve having a nozzle hole plate wherein a nozzle hole is formed, the nozzle hole is formed with a flow path cross-section having an oval shape that has long axes and short axes, and the nozzle hole is formed having a tapered shape in which a flow path sectional area becomes larger from an entry-side open end portion toward an exit-side open end portion. The nozzle hole is formed such that a second angle that is an intersecting angle of opposing nozzle hole inner wall surface portions in an oblique section along the short axes of the entry-side open end portion and the exit-side open end portion, is greater than a first angle that is an intersecting angle of opposing nozzle hole inner wall surface portions in a longitudinal section along the long axes of the entry-side open end portion and the exit-side open end portion.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: June 19, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Natsuki Sugiyama, Mitsutaka Yoshida, Akio Satou, Masahiko Asano, Yasuo Kinoshita, Masao Nakayama, Kenji Kidera, Masaru Setodoi, Hirokazu Ito, Hiroyuki Sakai
  • Patent number: 9970397
    Abstract: A fuel electro-injector for a fuel injection system for an internal combustion engine, having an atomizer equipped with a nozzle and a valve needle defining a discharge section that is annular and has a width that continuously increases as the opening stroke of the valve needle proceeds. The opening stroke is directed outwards and is caused, in a proportional manner, by the operation of an electric actuator. The electro-injector has a high-pressure environment with an annular passageway around the lateral outer surface of the valve needle to supply fuel to the discharge section, and a low-pressure environment, which communicates with a fuel outlet and is separated from the high-pressure environment by a dynamic seal between the valve needle and the nozzle.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: May 15, 2018
    Assignee: C.R.F. Societa' Consortile per Azioni
    Inventors: Sergio Stucchi, Onofrio De Michele, Raffaele Ricco, Marcello Gargano, Carlo Mazzarella
  • Patent number: 9957939
    Abstract: A fuel injector, comprising a nozzle body having a proximal end and a distal end, an upper row of nozzle holes being equally spaced about a first circumference of the nozzle body, and a lower row of nozzle holes located between the distal end and the upper row of nozzle holes, wherein the upper row has a first number of holes that is greater than a second number of holes in the lower row and wherein one of the first number of holes and the second number of holes is odd.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: May 1, 2018
    Assignee: Cummins Inc.
    Inventors: Chandan Mahato, Frank Husmeier, Foy C. Henderson
  • Patent number: 9951770
    Abstract: A valve seat has an inner passage and outer passages. A suction valve member has first passages and a first projection portion that guides, to the first passages, the fuel that flows from a pressure chamber at the time of valve opening. Therefore, an action force by the dynamic pressure applied to the suction valve member in the valve closing direction is reduced. An action force by the pressure of fuel that flows into pressure equalization grooves counterbalances the action force by the dynamic pressure of the suction valve member. Therefore, self-closing by the dynamic pressure can be inhibited, and the maximum output of an electromagnetic driving unit can be reduced. Fuel flows through a passage radially outside the suction valve member and the first passages. A fluid passage area is securable even when a lift amount of the suction valve member is small.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: April 24, 2018
    Assignee: DENSO CORPORATION
    Inventors: Masatoshi Kuroyanagi, Hiroshi Inoue, Shinichiro Koshimoto
  • Patent number: 9896984
    Abstract: An orifice plate for an injector is provided, which includes a base portion disposed along a base plane. An offset portion is unitarily formed with the base portion. The offset portion is at least partially disposed outside of the base plane. The offset portion defines a flow entry side and a flow exit side, and the offset portion defines a plurality of exit apertures therethrough. A plurality of projections extends from the flow entry side of the offset portion. The plurality of projections is configured to contact an injector surface. An injector and a reductant delivery unit incorporating such an orifice plate are also provided.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: February 20, 2018
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Justin A Shank, Dean L Spiers
  • Patent number: 9874188
    Abstract: An object of the present invention is to further improve the characteristic of the fuel spray of a fuel injection valve which has a plurality of stepped injection holes having a hole diameter of an outlet side injection hole larger than a hole diameter of an inlet side injection hole and which injects fuel from the stepped injection holes into a cylinder of an internal combustion engine. A cutout portion, which guides a flow of gas flowing into an outlet side injection hole from a lateral position of a fuel outlet of the outlet side injection hole during fuel injection, in a circumferential direction of the outlet side injection hole, is provided for at least one of both lateral portions between which the fuel outlet is interposed along with an arrangement direction of a plurality of injection holes, on a circumferential edge of the fuel outlet of the outlet side injection hole, in relation to at lease some of the injection holes of a fuel injection valve having the plurality of stepped injection holes.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: January 23, 2018
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Hisaki Ito, Noriyuki Takada, Tsutomu Kawae
  • Patent number: 9863380
    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 (?), 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 (?) 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: Grant
    Filed: August 9, 2012
    Date of Patent: January 9, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yukitaka Sakata, Tsuyoshi Munezane, Naoya Hashii, Keisuke Ito, Kyosuke Watanabe, Shota Kawasaki
  • Patent number: 9828961
    Abstract: In a fuel injection valve, a first injection hole and a second injection hole having reference inside diameters Dn1, Dn2 different from each other are formed as a plurality of injection holes. In such a configuration, an L/D value obtained by dividing the flow channel length Ln1 of the first injection hole by the reference inside diameter Dn1 of the first injection hole agrees to an L/D value obtained by dividing the flow channel length Ln2 of the second injection hole by the reference inside diameter Dn2 of the second injection hole.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: November 28, 2017
    Assignee: DENSO CORPORATION
    Inventor: Hiroki Kaneta
  • Patent number: 9771912
    Abstract: A fuel injector for internal combustion engines is provided, which has a valve seat member, bordering a valve chamber, having a valve seat and spray orifices and a central blind-end bore as well as a valve member that is able to be driven to cause a lift motion having a closing head, which, together with a valve seat, forms a sealing seat lying upstream of the spray orifices. In order to prevent an underpressure developing in the blind-end bore in the closing phase of the sealing seat, and a partial return flow of the fuel connected with it, the closing head of the valve member is provided, at its end face facing towards the valve seat member, with a plunger sticking out from closing head, which has a shape adjusted to the contour of the blind-end bore, and dips into the blind-end bore when the sealing seat is closed.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: September 26, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventor: Marco Vorbach
  • Patent number: 9761994
    Abstract: The present invention provides a ruggedized heavy duty source connector adapted for use on large air guns. The source connector comprises reinforcing fibers in the cable jacket that are anchored to the connector front shell, an external blast shield in place of a rear shell, and a fatigue resistant strain relief overmold.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: September 12, 2017
    Assignee: Teledyne Instruments, Inc.
    Inventors: Daniel Saydyk, Michael Williams
  • Patent number: 9739247
    Abstract: A mist forming method using a fluid injection valve formed of a valve seat, a valve body, and a nozzle portion or an injection hole plate having injection holes, and configured to turn in-hole flows and flows immediately below the injection holes into substantially liquid film flows. Directions of jets from the injection holes are not necessarily brought into coincidence with a center axis direction of the injection holes and are not necessarily crossed with one another in a downstream part, and after the jets turned into mists at a position downstream of a break length position, the mists are allowed to come close or gather by the Coanda effect so as to appear substantially as one solid mist, and allowed to keep gathering until catching of ambient air and a resulting air flow along a downstream flow direction in a predetermined in-mist portion attenuate.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: August 22, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Mamoru Sumida, Tatsuya Nakayama
  • Patent number: 9732716
    Abstract: In an injection hole of a nozzle, a maximum value of a longitudinal length of an inlet, which is measured in a direction of an inlet longitudinal axis of the inlet, is larger than a maximum value of a longitudinal length of an outlet, which is measured in a direction of an outlet longitudinal axis of the outlet. A rear end edge of an opening edge of the inlet is shaped into an arc. When the maximum value of the inlet is made larger than the maximum value of the outlet, an upstream end of the inlet can be placed at a further upstream side, so that a turn angle of a fuel flow can be reduced to increase the flow coefficient. Furthermore, when the rear end edge is shaped into the arc, the maximum value of the inlet can be increased.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: August 15, 2017
    Assignee: DENSO CORPORATION
    Inventors: Kazufumi Serizawa, Shinya Sano, Atsushi Utsunomiya
  • Patent number: 9709010
    Abstract: Injection holes of an injection nozzle are respectively formed such that an inner diameter of an outer opening is larger than an inner diameter of an inner opening. Furthermore, the injection holes are formed such that when an imaginary plane, which includes a valve seat portion that is a portion of a valve seat and is adjacent to the injection hole, is extended toward a central axis, the imaginary plane first intersects with an injection hole inner wall portion of an injection hole inner wall of the injection hole.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: July 18, 2017
    Assignee: DENSO CORPORATION
    Inventor: Noritsugu Kato
  • Patent number: 9664160
    Abstract: Disclosed herein is a vehicular high pressure direct injection type injector with valve seat body for fuel-atomization. A nozzle hole has an elliptical cross-section so that the fuel injection speed can be increased, whereby a fuel atomization effect can be maximized. Furthermore, a stepped hole is formed under the nozzle hole so that the nozzle hole can be fundamentally prevented from becoming clogged with combustion byproducts.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: May 30, 2017
    Assignee: HYUNDAI KEFICO CORPORATION
    Inventors: Jeong-Hwan Park, Hyoung-Jin Kim
  • Patent number: 9587608
    Abstract: A metering valve or an injector includes: a valve-seat member which closes a valve chamber and has a central valve opening, and a spray orifice disk downstream from the valve-seat member in the flow direction of the fluid, which has at least one spray orifice. The spray orifice disk has a swirl chamber concentric with the spray orifice and at least one swirl duct leading from the swirl chamber to beneath the valve opening, and the swirl chamber and swirl duct are integrally formed as recesses into the disk surface of the spray orifice disk facing the valve body. The swirl duct has a duct cross section and the spray orifice has an orifice cross section such that the ratio of the duct cross section to the orifice cross section is equal to or greater than 1.5.
    Type: Grant
    Filed: July 5, 2012
    Date of Patent: March 7, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Laurent Jeannel, Kerstin Koch, Franz Thoemmes, Martin Stahl
  • Patent number: 9574535
    Abstract: A fuel injection valve includes: a needle valve including a seat portion on a tip side thereof; a nozzle body including a seat surface on which the seat portion is placed, and a swirl stabilization chamber on a downstream side of the seat surface, the nozzle body having an injection hole formed so as to have an inlet in the swirl stabilization chamber; a swirl flow generating portion having swirl grooves configured to give a swirling component to fuel to be introduced into the swirl stabilization chamber; and a fuel collision portion provided in a tip portion of the needle valve, the fuel collision portion being configured such that, in a state where the needle valve is opened, the fuel collision portion intersects with a virtual surface extended toward the injection hole from the seat surface included in the nozzle body.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: February 21, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Tatsuo Kobayashi
  • Patent number: 9551311
    Abstract: A nozzle body for a fluid injection includes a cavity and a bottom wall delimiting the cavity at a fluid outlet end. The bottom wall is perforated by an injection hole having an inlet opening at an inner surface of the bottom wall and an outlet opening at an outer surface of the bottom wall. The outlet opening has an elongated slit shape having a centerline which is a circular arc with respect to the longitudinal axis. The inlet opening is spaced apart from the longitudinal axis by a radial distance. The inner surface has a concave shape extending away from the fluid outlet end from an apex of the inner surface. Further, the inlet opening is spaced apart from the apex by an axial distance that is smaller than said radial distance.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: January 24, 2017
    Assignee: CONTINENTAL AUTOMOTIVE GMBH
    Inventors: Antonio Agresta, Marco Maragliulo, Marco Mechi, Marco Fiaschi
  • Patent number: 9528481
    Abstract: Fuel injection valve with conical valve seat surface that abuts a valve body to seal fuel, fuel injection orifices having an inlet opening formed on the valve seat surface, wherein fuel sprays injected from the plurality of fuel injection orifices include a first fuel spray constituted by a fuel spray injected from at least one fuel injection orifice and a second fuel spray constituted by a plurality of fuel sprays injected at an outer periphery of the first fuel spray, and a fuel injection orifice that injects the first fuel spray constituted with a plane that includes an orifice axis connecting a center of an inlet with a center of an outlet of the fuel injection orifice, parallel to a center axis of the fuel injection valve intersecting a plane, a conical apex that forms the valve seat surface to form an inclination angle that is larger than 0°.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: December 27, 2016
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yoshihito Yasukawa, Motoyuki Abe, Hideharu Ehara, Tohru Ishikawa, Eiji Ishii
  • Patent number: 9518547
    Abstract: A fuel injector for an internal combustion engine is disclosed. The fuel injector includes a tip in fluid connection with a combustion chamber of the engine and includes an orifice for injecting fuel as a fuel jet. The fuel injector includes a protruding member in fluid connection with the first orifice extending from the tip at a protruding angle. The orifice injects the fuel jet into the first protruding member. The fuel injector includes a plurality of extension members in fluid connection with the protruding member and includes at least, a first extension member and a second extension member. The first and second extension members may extend from the protruding member at extension angles. The fuel jet may be distributed into, at least, a first distributed jet and a second distributed jet when the first fuel jet flows from the protruding member to the first plurality of extension members.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: December 13, 2016
    Assignee: Caterpillar Inc.
    Inventor: Bobby John
  • Patent number: 9511389
    Abstract: The present invention relates to a nozzle plate structure which comprises a plate and a plurality of orifices penetrating the plate. Each orifice comprises a liquid-storing space and a liquid-outputting space. Through the configuration of the liquid-storing space, the liquid in a container can be smoothly educed therefrom. Through the configuration of the liquid-outputting space, liquid dripping can be decreased. Alternatively, a liquid-guiding space is arranged between the liquid-storing space and the liquid-outputting space, so that the resonance oscillation of the liquid in the orifice can be enhanced. Further, the remaining liquid in the liquid-outputting space can be reabsorbed by the capillarity of the liquid-guiding space.
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: December 6, 2016
    Assignee: Taiwan Puritic Corp.
    Inventors: Huan-Ping Teng, Chih-Hsiang Hsu
  • Patent number: 9303608
    Abstract: A fuel injector has a valve nozzle defining a fuel-injection port downstream of a fuel passage. The fuel-injection port is inclined toward a nozzle periphery from a fuel-inlet to a fuel-outlet. A valve needle is capable of moving in a valve-opening direction to open the fuel-injection port so that a fuel flowing into the fuel-inlet from the nozzle periphery is injected into an internal combustion engine. The fuel-injection port has an upstream-portion defining the fuel-inlet, and a downstream-portion defining the fuel-outlet. The downstream-portion is smoothly connected to the upstream-portion at a position most close to a center of the valve nozzle, and the downstream-portion is offset toward the nozzle periphery relative to the upstream-portion, so that the upstream-portion and the downstream-portion forms a step surface therebetween. The step surface is eccentric to a center line of the upstream-portion.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: April 5, 2016
    Assignee: DENSO CORPORATION
    Inventor: Hiroki Kaneta
  • Patent number: 9194350
    Abstract: A fuel injection valve includes a solenoid device which generates a magnetic sucking force; a core provided inside the solenoid device; a movable valve element composed of an armature coming into contact with the core, a pipe section whose one end is joined to the armature, and a valve section joined to the other end of the pipe section, the valve element being suctioned against a spring during energization of the solenoid device; and a valve seat unit having a valve seat to or from which the valve element is mounted or removed by the magnetic sucking force generated from the solenoid device and pressing force of the spring. The armature, the valve section, and the pipe section of the valve element are integrally configured by molding with resin, the armature and the valve section being joined by the pipe section.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: November 24, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akio Shingu, Keishi Nakano, Tsuyoshi Munezane
  • Patent number: 9103311
    Abstract: Fuel injection valve with conical valve seat surface that abuts a valve body to seal fuel, fuel injection orifices having an inlet opening formed on the valve seat surface, wherein fuel sprays injected from the plurality of fuel injection orifices include a first fuel spray constituted by a fuel spray injected from at least one fuel injection orifice and a second fuel spray constituted by a plurality of fuel sprays injected at an outer periphery of the first fuel spray, and a fuel injection orifice that injects the first fuel spray constituted with a plane that includes an orifice axis connecting a center of an inlet with a center of an outlet of the fuel injection orifice, parallel to a center axis of the fuel injection valve intersecting a plane, a conical apex that forms the valve seat surface to form an inclination angle that is larger than 0°.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: August 11, 2015
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Yoshihito Yasukawa, Motoyuki Abe, Hideharu Ehara, Tohru Ishikawa, Eiji Ishii
  • Patent number: 8967501
    Abstract: The invention relates to a valve arrangement (2) for metering a fluid medium into an exhaust line (22), comprising a valve seat (10) which acts together with a closing body (12) and in which a valve passage (14) is implemented, and a perforated disc (6) that is disposed downstream of the valve seat, closes off the valve passage, and has at least one axial hole (8) in the area of the valve passage through which the fluid medium can be injected into the exhaust line (22). The valve arrangement further comprises a connecting flange (16) for connecting the valve arrangement (2) to the exhaust line (22) in a fluid-tight manner, wherein the perforated disc (6) extends from the valve passage to the connecting flange and is implemented such that said perforated disc seals the connecting flange against the exhaust line in a fluid-tight manner in the installed state. A separate seal is thus no longer required, because the perforated disc performs the sealing function.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: March 3, 2015
    Assignee: Robert Bosch GmbH
    Inventor: Rainer Haeberer
  • Patent number: 8967500
    Abstract: An injection hole inlet is disposed at the upstream side face of the injection hole plate in such a way that, assuming that ? denotes the angle between respective lines obtained by vertically projecting a straight line that passes through the center of the injection hole inlet and the center of the valve seat and the major axis of the injection hole inlet onto a perpendicular plane that passes through the center of the injection hole inlet and is perpendicular to the center axis of the valve seat and assuming that ? denotes the angle between respective lines obtained by vertically projecting the straight line that passes through the center of the injection hole inlet and the center of the valve seat and the minor axis of the injection hole inlet onto the perpendicular plane, ?<? is satisfied.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: March 3, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naoya Hashii, Tsuyoshi Munezane
  • Patent number: 8950694
    Abstract: A fuel injector body has a fuel chamber and a valve seat around a fuel outlet. A valve body is positioned at the valve seat and a valve stem extends through the fuel outlet and fuel chamber. Engagement (disengagement) of valve body and valve seat closes (opens) the injector. The fuel chamber can comprise primary and secondary chambers connected by a valve passage and a metering member that restricts fuel flow between the chambers, thereby providing a flow-dependent closing force that reduces the dependence of fuel flow through the injector on fuel inlet pressure and that makes that flow dependent on an injector actuating force. The injector body or the valve body can comprise a spray-shaping surface arranged at least partly around the valve seat, which spray-shaping surface is arranged to direct a spray of fuel flowing through the fuel outlet.
    Type: Grant
    Filed: May 12, 2011
    Date of Patent: February 10, 2015
    Inventor: Andrew E. Meyer
  • Patent number: 8919675
    Abstract: At the downstream-side face of an injection hole plate, a plurality of concaves are arranged corresponding to a plurality of injection holes; at least part of an injection hole outlet opens at the plain of the concave; the rest of the outlet opens at the downstream side face of the injection hole plate or contacts the inner surface of the concave. In a flow path formed by the injection hole, there is provided a cylindrical portion, whose cross section is the radially minimum cross section of the injection hole, from the upstream side face of the injection hole plate to the plain of the concave. Where D1 denotes the diameter of the injection hole and D2 denotes the diameter of the concave or the diameter of the concave in the circumferential direction of the virtual circle, the relationship 1.1<(D2/D1)<3.0 is satisfied.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: December 30, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yukitaka Sakata, Naoya Hashii, Kyosuke Watanabe, Tsuyoshi Munezane
  • 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: 8905333
    Abstract: A method and apparatus are disclosed for inducing a supercavitating flow inside a fuel injection nozzle orifice to reduce the penetration length of the fuel spray, maintain high levels of fuel atomization, and improve uniformity of the fuel spray exiting the nozzle such that high-pressure injectors can be used on small engines. This reduction in penetration length is accomplished without any reduction in upstream fuel pressure.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: December 9, 2014
    Assignee: Mainstream Engineering Corporation
    Inventors: David M. Sykes, Joseph Homitz, Gregory S. Cole