Upstream Of Flow Regulator* Patents (Class 239/533.5)
  • Patent number: 10047709
    Abstract: A fuel injector includes a nozzle body having a spray tip with at least one spray orifice and a needle slideably arranged in the nozzle body in order to control the spray orifice. A control chamber is associated with the needle, which is filled with high-pressure fuel in order to exert a pressure force on the needle in its closing direction; the control chamber being in communication with a high pressure fuel channel through an inlet restrictor and with a low pressure drain through an outlet restrictor via a control valve to selectively allow or hinder the flow of fuel out of the control chamber through the outlet restrictor. The inlet restrictor and outlet restrictor are designed so that the ratio of outlet fuel flow rate over inlet fuel flow rate increases at low fuel temperatures, in order to cause a greater pressure reduction in the control chamber.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: August 14, 2018
    Assignee: DELPHI TECHNOLOGIES IP LIMITED
    Inventors: Nicolas Rodier, Quentin Roussot
  • Patent number: 9924963
    Abstract: A vitrectomy apparatus for performing an ocular surgery may include a vitrectomy probe body graspable by a user and a cutter extending from the body and comprising an inner tube and an outer tube. The inner tube may be moveable relative to the outer tube. The apparatus also may include an actuator within the body and configured to actuate the inner tube relative to the outer tube. A valve may be carried by the body and may be configured to selectively direct a pressurized fluid to the actuator to actuate the inner tube relative to the outer tube.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: March 27, 2018
    Assignee: Novartis AG
    Inventor: Brian William McDonell
  • Patent number: 9822749
    Abstract: A fuel injector for an internal combustion engine includes: an electromagnetic actuating element having a solenoid coil, a core and a valve casing as the outer solenoid circuit component, and a movable valve-closure body, which cooperates with a valve-seat surface assigned to a valve-seat body. The core and a connection pipe are fixedly connected in an inner opening of a thin-walled valve sleeve and the valve casing at the outer circumference of the valve sleeve is fixedly connected to the valve sleeve by being pressed in/on.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: November 21, 2017
    Assignee: ROBERT BOSCH GMBH
    Inventors: Marc-Jean Derenthal, Johann Bayer, Ralph Ittlinger
  • Patent number: 9328706
    Abstract: A fuel injector has a cylindrical nozzle body, a nozzle needle, a pressure chamber and an injection passage. The injection passage includes a first hole and a second hole. A minimum vertical distance between an outer periphery of a first nozzle hole outlet and a contact point relative to an axial center line of the first hole is defined as a vertical distance R. A minimum axial distance between the first nozzle hole outlet and the contact point relative to an axial center line of the first hole is defined as an axial distance L. An angle between the axial center line of the first nozzle hole and the outer periphery line of the fuel spray is defined as an injection angle ?. The vertical distance R, the axial distance L and the injection angle ? satisfy a formula: R/(L×tan ?)>6.0.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: May 3, 2016
    Assignee: DENSO CORPORATION
    Inventors: Kazufumi Serizawa, Atsushi Utsunomiya, Fumihiro Fujikake, Fumiaki Arikawa, Yuuta Hashimoto
  • Patent number: 9038930
    Abstract: In a fuel injection device, a pressing surface of a pressing member presses an opening wall surface to interrupt communication between an inflow port and a pressure control chamber when communication between an outflow port and a return channel is made by a pressure control valve, and the pressing surface of the pressing member is displaced and separated from the opening wall surface to open the inflow port of the opening wall surface to the pressure control chamber when the communication between the outflow port and the return channel is interrupted by the pressure control valve. One of the pressing surface of the pressing member and the opening wall surface of the control body is provided with an inflow depressed portion and an outflow depressed portion partitioned from each other, and a depressed dimension of the inflow depressed portion is larger than a depressed dimension of the outflow depressed portion.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: May 26, 2015
    Assignee: DENSO CORPORATION
    Inventors: Yukihiro Fukuta, Tsukasa Yamashita
  • Patent number: 8628031
    Abstract: Method and apparatus for controlling needle seat load in very high pressure diesel injectors. In accordance with the method, a needle control piston responsive to hydraulic forces for controllably forcing the injector needle against the needle seat is provided, as is a stop for the needle control piston to limit the needle control piston movement toward the needle seat. This provides a stop for the needle control piston, so that the compressive deflection between the needle control piston and the needle seat limits the force of the injector needle on the needle seat against increasing hydraulic forces on the needle control piston once the needle control piston reaches the needle control piston seat.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: January 14, 2014
    Assignee: Sturman Industries, Inc.
    Inventor: Tibor Kiss
  • Patent number: 8602328
    Abstract: The invention has an object for improving response of a fuel injection device. A flow-in recessed portion and a flow-out recessed portion are formed at a press-contacting surface of a floating plate, which is movably accommodated in a pressure control chamber. A flow-in port and a flow-out port are formed at a pressure control surface of a valve body. The flow-in port is opened to the flow-in recessed portion, while the flow-out port is opened to the flow-out recessed portion. When the floating plate is moved upwardly and the press-contacting surface is brought into contact with the pressure control surface, the flow-in port is surely closed.
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: December 10, 2013
    Assignee: Denso Corporation
    Inventors: Naofumi Adachi, Shuichi Matsumoto, Keisuke Suzuki, Tomoyuki Tsuda, Yoichi Kobane, Yoshinori Okuno
  • Patent number: 8210454
    Abstract: The invention relates to a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine, which fuel injector comprises an injection valve element, for opening and closing at least one injection opening and a pressure booster, by way of which fuel which is at system pressure is compressed to injection pressure. The pressure booster is actuated via a first control valve and the injection valve element is actuated via a second control valve. The pressure booster comprises a pressure booster piston which is assigned a spring element which is supported by way of one side on the injector housing and by way of the other side on the pressure booster piston. The pressure booster piston delimits a compression chamber, a differential pressure chamber and a control chamber.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: July 3, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Juergen Frasch, Stephan Wehr
  • Patent number: 8028929
    Abstract: An arrangement for controlling the fuel supply in a fuel supply apparatus, which arrangement comprises a body part including a space, through which the fuel to be injected flows during the operation, and a fuel inlet opening and a fuel discharge opening, which open into said space, the arrangement further comprising a piston member movably arranged in said space and a flow path to provide flow communication between the fuel inlet opening and the fuel discharge opening. The arrangement comprises at least one throttle section opening to the front of the piston member in the flow direction of the fuel, the cross-sectional flow area of which section is determined by the mutual positions of the piston member and the body part.
    Type: Grant
    Filed: June 11, 2004
    Date of Patent: October 4, 2011
    Assignee: Wärtsilä Finland Oy
    Inventor: Kai Lehtonen
  • Patent number: 7712685
    Abstract: The present invention relates to fuel injection in internal combustion engines and to fuel rate shaping. Especially, the invention relates to combustion engines utilizing heavy fuel oil as a fuel. In the body of the device there is arranged a chamber, in which a movable piston is arranged dividing the chamber into a first main volume and a second main volume, the volumes of which depend upon the position of the piston. Moreover, the device comprises at least one auxiliary volume, which can be united with the main volumes. The auxiliary volume can be filled with the fuel entering the device through the first main volume by utilizing the piston motion. By establishing a connection from the auxiliary volume to the second main volume a fuel flow to the second main volume is allowed.
    Type: Grant
    Filed: December 31, 2004
    Date of Patent: May 11, 2010
    Assignee: Wärtsilä Finland Oy
    Inventor: Kai Lehtonen
  • Patent number: 7523875
    Abstract: An injection nozzle (4) for an internal combustion engine, the injection nozzle (4) including a nozzle body (6) provided with a bore (8) defining a valve seating surface, and having a first nozzle outlet and a second nozzle outlet, a first delivery chamber upstream of said nozzle outlets, an outer valve member, moveable within the bore (8) and itself provided with an axial bore (8), wherein the outer valve member is engageable with an outer valve seat defined by the valve seating surface so as to control fuel flow from a first delivery chamber to at least the first nozzle outlet when the outer valve member lifts from its seat.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: April 28, 2009
    Assignee: Delphi Technologies, Inc.
    Inventors: Michael Peter Cooke, Godfrey Greeves
  • Publication number: 20080223959
    Abstract: The present invention relates to an injection nozzle for an internal combustion engine in a motor vehicle. A nozzle body has at least one spray hole, a nozzle needle mounted in the nozzle body with adjustable stroke for controlling an injection of fuel through the at least one spray hole. A booster piston is drive-coupled to an actuator and has a booster face which delimits a booster chamber. According to the invention, the nozzle needle has a control face which delimits a control chamber. In order to dampen the movement of the nozzle needle into its needle seat as the nozzle needle closes, a damping piston is arranged in the nozzle body with an adjustable stroke. The damping piston separates the control chamber from the booster chamber. A damping path is provided in the damping piston to hydraulically connect the control chamber to the booster chamber in a throttled manner.
    Type: Application
    Filed: June 6, 2006
    Publication date: September 18, 2008
    Inventor: Michael Kurz
  • Publication number: 20080118371
    Abstract: A variable geometry ejector pump is configured to receive pressurized fluid from one or more pressurized fluid sources and to control fluid pressure and temperature down stream of the pump to a variety of pressure and temperature values. The variable geometry ejector pump includes a primary inlet, a secondary inlet, a variable geometry ejector, an ejector valve, an actuator, a mixing section, a diffuser section, and an actuator control mechanism. The actuator control mechanism is adapted to receive one or more control signals, and is operable, in response to the control signals, to control the actuator, to thereby control fluid pressure and temperature down stream of the pump.
    Type: Application
    Filed: April 12, 2007
    Publication date: May 22, 2008
    Applicant: HONEYWELL INTERNATIONAL, INC.
    Inventors: John A. Vasquez, Paul W. Banta
  • Patent number: 7334741
    Abstract: A closed nozzle fuel injector is provided which effectively controls the fuel injection flow rate, especially during an initial portion of an injection event, while also permitting accurate control over pilot and/or post injection flow rates at all operating conditions thereby advantageously reducing emissions and combustion noise. The injector includes a rate shaping orifice to restrict fuel flow during an initial portion of an injection event and a rate shaping sleeve mounted for movement to cause a greater flow of injection fuel during a later portion of the injection event. A damping chamber and orifice are also provided to control movement of the rate shaping sleeve.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: February 26, 2008
    Assignee: Cummins Inc.
    Inventors: Donald J. Benson, David M. Rix, Lester L. Peters, Shankar C. Venkataraman, C. Edward Morris, Jr.
  • Patent number: 7188790
    Abstract: The fuel injection valve, for an internal combustion motor, has a valve body with injection openings (20) at its point. A valve needle has an axial movement within the valve body, with a conical needle point to give a selective blocking and release of the fuel flow through the injection openings. The point of the valve needle has recessed grooves matching each of the injection openings. The width of each groove matches the diameter of an injection opening, with a stepped contour and a curved cross section.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: March 13, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventors: Andrej Astachow, Grit Krüger
  • Patent number: 6935580
    Abstract: Engineers have determined that the performance of fuel injectors, including those used in common rail fuel injection systems, can be increased, and undesirable emissions reduced, by controlling the mass flow rate of fuel injected into a combustion chamber during an injection event. While a number of fuel injectors have been developed that have limited rate shaping capabilities, the ability to produce some front end rate shapes has not been possible. In an effort to increase rate shaping capabilities, the present invention includes a valve assembly having at least one valve member that is movable between a plurality of positions to control fluid communication between a number of fluid inlets and outlets.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: August 30, 2005
    Assignee: Caterpillar Inc
    Inventors: Junru Azam, Edward R. Gillis
  • Publication number: 20040159716
    Abstract: Engineers have determined that the performance of fuel injectors, including those used in common rail fuel injection systems, can be increased, and undesirable emissions reduced, by controlling the mass flow rate of fuel injected into a combustion chamber during an injection event. While a number of fuel injectors have been developed that have limited rate shaping capabilities, the ability to produce some front end rate shapes has not been possible. In an effort to increase rate shaping capabilities, the present invention includes a valve assembly having at least one valve member that is movable between a plurality of positions to control fluid communication between a number of fluid inlets and outlets.
    Type: Application
    Filed: February 10, 2003
    Publication date: August 19, 2004
    Inventors: Junru Azam, Edward R. Gillis
  • Publication number: 20040089746
    Abstract: An irrigation system for supplying aerated water to plants includes a diffuser. Oxygen is diffused into water by the diffuser to generate aerated water. The aerated water is supplied to an irrigation device which supplies the aerated water to the plants.
    Type: Application
    Filed: April 25, 2003
    Publication date: May 13, 2004
    Inventors: Greg Archambeau, Richard Klena, Anthony Wood
  • Patent number: 6698666
    Abstract: In a fuel injection valve having a pressure control chamber, a nozzle, and an electromagnetic valve, a fuel flow-in passage, a fuel flow-out passage and at least a part of the pressure control chamber are formed in a single piece of a plate in such a manner that the part of the pressure control chamber is opened to an axial end surface of the plate and the fuel flow-out passage extends so as to penetrate the plate axially from an inner wall of the part of the pressure control chamber to another axial end surface of the plate and the fuel flow-in passage comprises a first passage extending from the axial end surface of the plate and a second passage extending from the inner wall of the part of the pressure control chamber, which intersect with each other within the plate, wherein an entrance orifice is formed in first passage.
    Type: Grant
    Filed: September 19, 2002
    Date of Patent: March 2, 2004
    Assignee: Denso Corporation
    Inventors: Koichi Ohata, Nobuhisa Kakehashi, Toshiyuki Yoda, Eiji Itou
  • Patent number: 6540160
    Abstract: A fuel injection device having a fuel pump for each cylinder of an internal combustion engine, which fuel pump has a pump piston that is driven into a stroke motion by the engine and delimits a pump working chamber, which is supplied with fuel from a fuel tank and is connected to a fuel injection valve, which has an injection valve member that controls at least one injection opening and can be moved by the pressure generated in the pump working chamber in an opening direction counter to a closing force. A first electrically controlled control valve controls a connection of the pump working chamber to a discharge chamber, and a second electrically controlled control valve controls the pressure prevailing in a control pressure chamber of the fuel injection valve, which pressure acts on the injection valve member in the closing direction.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: April 1, 2003
    Assignee: Robert Bosch GmbH
    Inventors: Nestor Rodriguez-Amaya, Roger Potschin, Ulrich Gruen, Ulrich Projahn
  • Patent number: 6409094
    Abstract: A fuel injector is provided which has an improved structure capable of adjusting fuel jet characteristics such as the quantity of fuel to be injected to an engine and a fuel injection time lag after the fuel injector is assembled. The fuel injector includes an air gap adjusting screw and a spring pressure adjusting screw. The air gap adjusting screw serves to change an air gap between a stator and an armature of a solenoid valve to adjust the quantity of fuel to a target one. The spring pressure adjusting screw serves to change a spring pressure urging a valve in a spray hole-closing direction to regulate a spray hole open duration, thereby adjusting the fuel injection time lag or the quantity of fuel.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: June 25, 2002
    Assignees: Denso Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Senta Tojo, Tetsuya Toyao, Teruaki Yamaguchi, Motoichi Murakami
  • Patent number: 6371441
    Abstract: A fuel injection valve, including a valve member which can control the opening and closing of a fuel outlet opening, an actuating mechanism which can move the valve member, and a compensation device which can exert compensation forces on the valve member that counteract an opening stroke of the valve member, wherein the compensation device has a piston which is supported so that it can move in an associated cylinder, wherein at one end, the piston defines a hydraulic chamber in the cylinder, which is acted on with a reference pressure, and in a starting position, the piston is supported at the other end against a stop that is stationary in relation to the cylinder, and via a force transmission mechanism, the valve member can drive the piston out of its starting position away from the stop. In this manner valve operation should be improved with regard to its controllability.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: April 16, 2002
    Assignee: Robert Bosch GmbH
    Inventor: Patrick Mattes
  • Publication number: 20010013556
    Abstract: An injection valve member for the closing and opening of injection orifices of a valve seat element is installed longitudinally adjustably in a central housing bore of a fuel injection valve. The opening and closing movement sequence of the injection valve member is controlled by a control device. A control piston operatively connected to the injection valve member is loaded, on the one hand, by the fuel system pressure prevailing in a high-pressure zone and, on the other hand, by the fuel control pressure in a control space. The high-pressure zone includes the central housing bore which is closed off sealingly by a control body fixed to the housing. The control space is arranged between the control body and a piston end face and is at least temporarily delimited radially by a control sleeve which is moveable transversely to the longitudinal axis of the housing.
    Type: Application
    Filed: January 19, 2001
    Publication date: August 16, 2001
    Applicant: CRT COMMON RAIL TECHNOLOGIES AG
    Inventor: Marco A. Ganser
  • Patent number: 6257507
    Abstract: A unit fuel injector of the type with an open injector comprises an injector body (1) with an axial space (4), which ends in an injector cap (3), an injection plunger (15) guided in the axial space and serving as a closing-off element, which injection plunger forms in the axial space a pressure space (23) from which the injection bores (60, 61) of an upper row (60) and a lower row (61) extend.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: July 10, 2001
    Assignee: Steyr-Daimler-Puch Aktiengesellschaft
    Inventors: Josef Morell, Harald Schmidt, Anton Dolenc
  • Patent number: 6227464
    Abstract: A hand held spray spout (10) has a basket filter (26) seated against an anti-siphon valve (24) proximate the base end of a water passage (12) within the spout. The filter has a plurality of protrusions (50) mounted within the inner diameter of the valve (24) and is also biased against the rim (52) of the valve. The filter has prongs (56) extending upstream from the basket section (40) to abut and be biased by a supply hose end which is mounted to the base end (14) of the hand held spray spout (10).
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: May 8, 2001
    Assignee: Masco Corporation of Indiana
    Inventors: Orro Karl Allmendinger, Garry Robin Marty