Having A Specific Shape, Material, Or Location Of Fuel Line Patents (Class 123/468)
  • Patent number: 7210461
    Abstract: An internal combustion engine for a motor vehicle with a cylinder head, an intake manifold, and a fuel distributor rail. The downstream end of the intake manifold is connected by a flange to intake channels in the cylinder head of the internal combustion engine. The fuel distributor rail is located at the downstream end of the intake manifold and is connected to fuel injection valves. The internal combustion engine is installed in the motor vehicle in such a way that the intake manifold is located on the side of the cylinder head on which the external crash force will act during a crash. A protective strap, which extends at least over the entire width of the flange, is attached to the cylinder head.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: May 1, 2007
    Assignee: Volkswagen AG
    Inventors: Nico Schreeck, Andreas Deyda, Kurt Hoppe
  • Patent number: 7204234
    Abstract: A high-pressure fuel injection pipe, which has an outside diameter (?) of 6.35 mm, an inside diameter (?) of 4.35 to 2.95 mm, and a wall thickness (t)of about 1.0 to 1.7 mm, can serve as a high-pressure fuel injection pipe for in-cylinder injection type gasoline engines which have an injection pressure of 4 to 20 MPa, and can adequately endure the use of low-grade gasoline, sour gasoline, DME (dimethyl ether), alcohol, alcohol blended fuel, etc. is provided. The high-pressure fuel injection pipe is manufactured by joining an outer pipe which is an seam-welded pipe or a seamless pipe and an inner pipe which is an seam-welded pipe with a Ni or Ni base alloy film on its inner peripheral surface, closely adhering them together by means of elongation.
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: April 17, 2007
    Assignee: Usui Kokusai Sangyo Kaisha Limited
    Inventor: Yoshiharu Morita
  • Patent number: 7195004
    Abstract: A fuel rail cup is provided with a lead-in volume of one-third a receiving volume of the fuel rail cup that allows insertion of an O-ring mounted on a fuel injector inlet to be inserted at 20 pound-force or less. A method of inserting the fuel injector inlet with an O-ring surrounding the fuel injector inlet into a receiving volume of a fuel rail cup is also provided.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: March 27, 2007
    Assignee: Siemens VDO Automotive Corporation
    Inventors: Joseph Edward Scollard, Stephen C. Bugos
  • Patent number: 7191763
    Abstract: A fuel supply apparatus is provided for an intake manifold and a fuel injection system that can be easily and reliably mounted together by a mounting structure, even when the intake manifold has an integrated design in which air intake branches curve steeply upward from a downward side to an upstream side. With this fuel supply apparatus, the fuel injection system is mounted with coupling bolts on the top surface of the outer wall of the downstream portion of the intake manifold. The threads of the bolts engage internal threaded bores in the fuel injection system. The heads of the bolts are disposed on a reverse side of a top surface of an outer wall of the intake manifold, with internal threaded bores of the fuel injection system being disposed on a side of the top surface of the outer wall of the intake manifold.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: March 20, 2007
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Kenichi Kashima
  • Patent number: 7188609
    Abstract: An inlet port 16 communicating with the interior of a fuel delivery pipe body 10 to introduce fuel is made open in a center of a tubular joint 11 having a smaller diameter than an inside diameter of a holder portion 15 of an injector 32 connected to a respective pipe end portion 25, and a length from a center of this inlet port 16 to the pipe end portion 25 is set to 30 to 1000 mm, to thereby form the tubular joint 11. The tubular joint 11 and the fuel delivery pipe body 10 are fixed such that the inlet port 16 of this tubular joint 11 is communicatable with the interior of the fuel delivery pipe body 10.
    Type: Grant
    Filed: August 2, 2005
    Date of Patent: March 13, 2007
    Assignee: Usui Kokusai Sangyo Kaisha, Ltd.
    Inventors: Eiji Watanabe, Koichi Hayashi, Shoichiro Usui
  • Patent number: 7168412
    Abstract: An injection nozzle for an internal combustion engine has a valve member moveable within a bore of a nozzle body, and a seating surface defining a seat cone angle the valve member including a first frustoconical valve region, a second frustoconical valve region, and an annular groove defining, in part, a delivery chamber in communication with at least one nozzle outlet. The annular groove is disposed intermediate the first and second valve regions such that a first seating line is defined at the mutual interface between the first valve region and the annular groove and is engageable with the seating surface to control delivery of fuel from a first supply chamber to the deliver chamber, and a second seating line is defined at the mutual interface between the second valve region and the annular groove and is engageable with the seating surface to control delivery from a second supply chamber to the delivery chamber.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: January 30, 2007
    Assignee: Delphi Technologies, Inc.
    Inventors: Michael P. Cooke, Andrew J. Limmer
  • Patent number: 7152577
    Abstract: To improve design freedom of fuel supply piping in a V-type engine, and avoid heat from cylinders, first and second fuel distribution pipes (8, 9) are arranged in one side walls (1a, 3e) and the other side walls (1h, 3a) respectively of first and second throttle bodies (1, 3), first and second fuel injection valves (J1, J2) are held to the one side wall (1a) and the other side wall (3a) respectively, first and second fuel connection pipe portions (8e, 9e) protrude toward the other direction X from a first fuel passage boss portion (8a) of the first fuel distribution pipe (8), and one direction Y from a second fuel passage boss portion (9a) of the second fuel distribution pipe (9) respectively, and the first and second fuel connection pipe portions (8e, 9e) are connected to a fuel coupling pipe (13) above inflow ends (1g, 3g) of the first and second throttle bodies and between facing walls (1d, 3d).
    Type: Grant
    Filed: January 18, 2006
    Date of Patent: December 26, 2006
    Assignee: Keihin Corporation
    Inventor: Mitsuyuki Nakagawa
  • Patent number: 7146965
    Abstract: The invention relates to a fuel charging system having pressure pulsation damping. The fuel charging system includes a first side rail connected to a second side rail by a crossover tube. Defined within the crossover tube are first and second passageways; the first passageway including a restricted flow section therein.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: December 12, 2006
    Assignee: Automotive Components Holdings, LLC
    Inventors: Joe Z. Li, Christopher J. Treusch, Christopher H. Price
  • Patent number: 7134425
    Abstract: To simplify fuel piping for connecting a fuel distribution pipe and a fuel pump in a throttle body comprising two fuel injection valves, a fuel supply pipe F comprises a first fuel supply pipe 1 having a fuel flow-in passage 1b projected from a first cylindrical portion 1a, a first inserting pipe 1c projected in one side direction X, a fuel flow-in passage 1d, and a first fuel supply passage, a second fuel supply pipe 2 having a second insert pipe 2b projected in the direction X from a second cylindrical portion 2a and fuel supply passage 2c, and a fuel connecting pipe 3 connecting the fuel flow-in passage 1d and the second fuel supply passage 2c, and the first and second inserting pipes 1c, 2b are inserted into first and second inserting holes 6d, 7d opened toward another side direction Y from a second fuel distribution pipe 7 respectively.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: November 14, 2006
    Assignee: Keihin Corporation
    Inventors: Naohiro Taguchi, Shunsuke Mochizuki
  • Patent number: 7131427
    Abstract: A fuel injection device for supplying high-pressure fuel to an internal combustion engine includes a fuel supply pump, a first common rail and a second common rail. High-pressure fuel is directly supplied to the first common rail and then to the second common rail from the first common rail through a connecting passage having an orifice. The high-pressure fuel accumulated in the common rails is supplied to injectors and is injected into cylinders in a controlled manner. To suppress pressure wave propagation from the first common rail to the second common rail while providing an appropriate flow passage size, a passage diameter of the orifice is set to 0.9 mm–1.3 mm. In this manner, a pressure difference between the first common rail and the second common rail is minimized.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: November 7, 2006
    Assignee: Denso Corporation
    Inventors: Yusuke Kawasaki, Ryo Suenaga, Mamoru Oki
  • Patent number: 7128055
    Abstract: A fuel delivery system is provided having a fuel rail with an outlet. A fuel injector is provided having a body with an outlet and a generally tubular inlet. The tubular inlet of the fuel injector is generally axially slideable into the fuel rail outlet. The fuel injector outlet has a generally noncircular cross-sectional shape and is torsionally restrained by the fuel rail outlet.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: October 31, 2006
    Assignee: Millennium Industries, Corp.
    Inventor: Michael J. Zdroik
  • Patent number: 7117850
    Abstract: An outboard motor comprises an engine disposed inside an outer cover, an intake unit provided for the engine and including a throttle body disposed in a vicinity of a crankcase of the engine and an intake manifold disposed on a side of the engine so as to extend from the throttle body, the intake manifold having a plurality of intake pipes extending towards intake ports formed in a cylinder head of the engine, and a fuel injectors disposed in substantially intermediate portions of the respective intake pipes.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: October 10, 2006
    Assignee: Suzuki Kabushiki Kaisha
    Inventor: Hiroyuki Maejima
  • Patent number: 7114489
    Abstract: A fuel-supply manifold assembly has a thin-wall tube extending along a tube axis and formed with a plurality of radially throughgoing ports and respective saddle fittings each formed with a face complementary to and fitting with an outer surface of the tube at a respective one of the ports and with a throughgoing passage having an inner end aligned with the respective port. Respective tubular alignment nipples each have a throughgoing passage and each further have an inner end seated in a respective one of the ports and an outer end seated in the inner end of the respective fitting.
    Type: Grant
    Filed: July 13, 2004
    Date of Patent: October 3, 2006
    Assignee: Benteler Automobiltechnik GmbH
    Inventors: Volker Wenke, Lars Sonntag
  • Patent number: 7100575
    Abstract: To improve the maintenance and inspection of a fuel injection valve, as well working of the fuel piping and wiring to the fuel injection valve. An engine fuel injection apparatus includes an air chamber provided on an upstream end of an air intake passage of an engine. A first fuel injection valve for injecting fuel toward the upstream end of the air intake passage is provided on a wall of the air chamber facing a wall connected to the upstream end of the air intake passage. The fuel piping and wiring to the first fuel injection valve is located outside of the air chamber. The air chamber also serves as an air cleaner case provided with a filter element therein.
    Type: Grant
    Filed: May 23, 2005
    Date of Patent: September 5, 2006
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yoshiyuki Kurayoshi, Takashi Akagi, Tomomi Yuhara, Naohisa Hirao
  • Patent number: 7086384
    Abstract: A vehicle fuel intake system (10) includes an intake manifold (14), an injector pack assembly (18) and an air cleaner assembly (16). The injector pack assembly (18) includes an encapsulated lead frame (36) that provides electrical communication to fuel injectors (26). The intake manifold defines a fuel rail (22) and a cavity (24). Fuel vapors permeating from the fuel rail (22) are trapped in the cavity (24) and channeled back into the air intake passages (20). The air cleaner assembly (16) includes a filter (28) for absorbing fuel vapor emissions from unburned fuel escaping a non-operating engine (12). An actuator (30) moves the filter (28) between an open and closed position. Once the engine begins operation, the actuator (30) opens the filter (28) to allow unrestricted airflow through the intake manifold (14).
    Type: Grant
    Filed: March 30, 2005
    Date of Patent: August 8, 2006
    Assignee: Siemens VDO Automotives Inc.
    Inventors: Ki-Ho Lee, James Kenneth Vanderveen
  • Patent number: 7066148
    Abstract: In a common rail for accumulating highly pressured fuel, a cylindrical body is provided with a chamber for accumulating highly pressured fuel and a delivery port which connects the chamber to the outer circumference thereof and communicates via a pipe-joining unit with a conduit in a distribution pipe. The longitudinal center axes of the chamber and the cylindrical body are disposed substantially coaxially with each other, and each of the longitudinal center axes of the delivery ports and the longitudinal center axis of the cylindrical body are skewed to each other. Accordingly, the durability of the cylindrical body is improved, and the thickness of the cylindrical body is uniform and the forging form of the cylindrical body becomes symmetric. The length of the delivery port is extended so that the durability of the cylindrical body is improved.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: June 27, 2006
    Assignee: Denso Corporation
    Inventor: Tadashi Nishiwaki
  • Patent number: 7063074
    Abstract: An apparatus for protecting a fuel system component disposed on an engine body in a vehicle, the apparatus including a protector including a first wall and a second wall connected with the first wall. The first and second walls extend toward the engine body and cooperate with each other to surround the fuel system component. The second wall has one end opposed to the engine body with a clearance. A first fastening member fixes the first wall to the engine body.
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: June 20, 2006
    Assignees: Nissan Motor Co., LTD, Aichi Machine Industry Co., Ltd., Renault s.a.s. societe par actions Simplifiee
    Inventors: Takehiro Horibe, Koji Asano, Syoji Kobiyama, Akio Iwamoto, Takahiro Yata
  • Patent number: 7047942
    Abstract: Cylinder heads (100a to 100f are respectively provided with fuel injectors (101a to 101f). Each of the fuel injectors (101a to 101f) is connected to each of joints (105a to 105f) in a common rail (105) extending linearly through fuel injection pipes (103a to 103f). In this example, it can be achieved to allow all the fuel injection pipes (103a to 103f) to have the same length by crossing the injection pipes (103b, 103c, 103d and 103e) to connect. With this configuration, it is possible to reduce the irregularities in the amount of fuel injection and to enhance the engine performance.
    Type: Grant
    Filed: March 23, 2004
    Date of Patent: May 23, 2006
    Assignee: Komatsu Ltd.
    Inventors: Hatsuo Ando, Tatsuya Iwazaki, Kanji Namimatsu, Takumi Ito, Yasuyuki Onodera
  • Patent number: 7040294
    Abstract: To manufacture fuel piping for connecting a fuel tank and a drive unit including an engine using a resin material at a low cost and to cause the fuel piping to suitably follow the movement of the fuel tank and the drive unit when the vehicle is being operated. A fuel piping includes connectors at both ends of a pipe member formed of resin material into a thin tubular shape for connecting between a fuel tank and a fuel injection apparatus for supplying fuel to an engine of a two-wheel vehicle or the like via the connectors. One or more bent portions are formed at the midsection of the pipe member of the fuel piping.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: May 9, 2006
    Assignee: Honda Motor Co., Ltd.
    Inventors: Katsuichi Yagisawa, Katsunori Komuro, Yasuaki Nagai, Toshikazu Saito, Masaki Ueno, Minoru Ueda
  • Patent number: 7028668
    Abstract: A fuel rail for a fuel-injected internal combustion engine includes an elongated tube having a longitudinal axis, an overall length and a cross-sectional shape along a substantial portion of the length of the tube. The cross-sectional shape is a closed curve, wherein all portions of the cross-sectional shape curve outwardly from the longitudinal axis, and the shape has a non-constant radius. The fuel rail also includes at least one fuel outlet for communicating with a fuel injector.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: April 18, 2006
    Assignee: Robert Bosch GmbH
    Inventors: David West, Michael T. Streb, William M. Warner
  • Patent number: 7021290
    Abstract: A fuel rail assembly with crossover conduits for communicating fuel between two fuel rails of a fuel-injected, spark ignited internal combustion engine is provided. The hose has a body with a mechanism for damping pressure pulsations within the fuel rail assembly.
    Type: Grant
    Filed: November 25, 2003
    Date of Patent: April 4, 2006
    Assignee: Millennium Industries
    Inventors: Michael J. Zdroik, Robert Doherty, Jackson Zel Roe, Gary Lynn Handshoe
  • Patent number: 7021291
    Abstract: A juncture and method for changing direction of fuel flow in a high pressure fuel injection system such as a common rail and/or a fuel pump, the juncture comprising a body, a first passage formed in the body having a first diameter and a longitudinal axis extending therethrough, the first passage including a groove positioned along a portion of the longitudinal axis, and a second passage formed in the body having a second diameter, a central axis extending therethrough, and an opening, the opening of the second passage being provided in the groove of the first passage to allow fluidic communication between the second passage and the first passage so that stresses at the juncture caused by high pressure fuel changing direction of flow is reduced.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: April 4, 2006
    Assignee: Cummins Inc.
    Inventors: James E. Denton, Anthony A. Shaull, Scott R. Simmons, Matthew B. State, Todd M. Wieland
  • Patent number: 7013874
    Abstract: To improve the maintenance and inspection of a fuel injection valve, as well working of the fuel piping and wiring to the fuel injection valve. An engine fuel injection apparatus includes an air chamber provided on an upstream end of an air intake passage of an engine. A first fuel injection valve for injecting fuel toward the upstream end of the air intake passage is provided on a wall of the air chamber facing a wall connected to the upstream end of the air intake passage. The fuel piping and wiring to the first fuel injection valve is located outside of the air chamber. The air chamber also serves as an air cleaner case provided with a filter element therein.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: March 21, 2006
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Yoshiyuki Kurayoshi, Takashi Akagi, Tomomi Yuhara, Naohisa Hirao
  • Patent number: 7007674
    Abstract: A fuel rail assembly configured for coupling to an engine, the fuel rail including a body having therein a fuel passageway, and a fuel injector coupled to the body and in fluid communication with the fuel passageway. A portion of the body is configured to interconnect with the engine assembly to secure the fuel rail assembly to the engine without using conventional threaded fasteners.
    Type: Grant
    Filed: April 1, 2003
    Date of Patent: March 7, 2006
    Assignee: Robert Bosch Corporation
    Inventors: Michael T. Streb, William M. Warner
  • Patent number: 7007675
    Abstract: In a fuel supply system constituted such that there is disposed a saddle type fuel tank provided with a main chamber and an auxiliary chamber on both sides of an upwardly protruding center portion of a bottom face thereof, a fuel transfer tube which is mounted to lie over the protruding portion of the fuel tank, is connected to a fuel introduction port of a jet pump disposed on a main chamber side, to pump fuel in the auxiliary chamber via the fuel transfer tube, at least a part of the fuel transfer tube is formed by arranging alternately a plurality of bellows portions each of which cross section is changed, and a plurality of straight portions each of which cross section is fixed.
    Type: Grant
    Filed: January 28, 2004
    Date of Patent: March 7, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Satoshi Ida, Takashi Kokojima, Takeshi Hidaka
  • Patent number: 7004145
    Abstract: The interior of the drawn, rolled or forged pipe (1) forms a high-pressure reservoir (2) comprising pressure lines (4), which are respectively connected to the reservoir by means of a transversal bore (3). The sealing body (7) of an end connection presses against a bearing surface (8) of the pipe (1) to form a seal by means of a force transmission element (9, 10, 13) that is provided with a thread. To reduce axial installation space and to improve the tensioning conditions, the sealing body (7) and the force transmission element (10, 13, 18) are arranged at least partially parallel to one another in the axial direction.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: February 28, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventor: Eckbert Uwe Zander
  • Patent number: 6990959
    Abstract: An air fuel delivery system arrangement for an engine is provided, including an air manifold body, having a first set of runners for a first cylinder bank with inlets on a first side and outlets on a second side of the manifold body and a second set of runners for a second cylinder bank with inlets on a second side and outlets on a first side. And a first fuel rail is included, having outlets for connection with fuel injectors for delivering fuel to the first cylinder bank being positioned generally between the inlets of the manifold body. A second fuel rail is also included, having outlets for connection with fuel injectors for delivering fuel to the second cylinder bank being positioned generally between the inlets of the manifold body being generally vertically aligned with the first fuel rail.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: January 31, 2006
    Assignee: Millennium Industries Corp.
    Inventors: Michael J. Zdroik, Robert Doherty, Jackson Zel Roe
  • Patent number: 6966301
    Abstract: An accumulator fuel system for an internal combustion engine having a plurality of engine cylinders, includes an accumulator fuel volume for supplying high pressure fuel to one or more of a plurality of injectors, each of which is arranged to supply fuel to an associated one of the engine cylinders. The accumulator fuel volume is integrated within an engine component, where the engine component provides a purpose other than that solely of an accumulator volume for storing high pressure fuel. The accumulator fuel volume is therefore defined in an existing engine component, to reduce part count, weight and cost. In one embodiment the accumulator fuel volume is defined within a rocker shaft of the engine and in another embodiment within the engine cylinder head.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: November 22, 2005
    Assignee: Delphi Technologies, Inc.
    Inventors: Andrew Knight, Andrew Male
  • Patent number: 6959695
    Abstract: An injection module assembly includes a fuel rail defining a passageway through which a fuel can flow, and a plurality of fuel injectors for delivering the fuel in the passageway to a respective plurality of combustion chambers in an internal combustion engine. The fuel injectors are coupled to the fuel rail such that an interface between the fuel rail and each fuel injector is substantially sealed to substantially prevent leakage of both liquid fuel and hydrocarbon emissions from the interface. The injection module assembly further includes an electrical connector coupled to the fuel rail and to each of the injectors for providing electrical power to each injector, and an overmolding covering at least a portion of the fuel rail, at least a portion of the electrical connector, and at least a portion of each fuel injector.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: November 1, 2005
    Assignee: Robert Bosch Corporation
    Inventors: William M. Warner, Brian Joseph Vivio, Brian Joseph Bachand
  • Patent number: 6948479
    Abstract: A hydraulic pulsation damper system for installation into an otherwise rigid hydraulic system to absorb and extinguish pressure pulsations being transmitted through the system by hydraulic fluid contained therein. The system is useful in suppressing pulsations in automotive fuel lines supplying fuel to fuel injection systems. The system includes fuel-conducting tubing made of flexible, non-permeable material that includes a convoluted central portion capable of expanding and contracting in response to pulsations in the fuel. Resilient foam is molded around the convoluted portion for controlling expansion of the convolutions. The foam and convoluted tubing are contained within a housing made from a larger-diameter hose having ends sealed as by swaged connectors. The damper system may be bent to accommodate installation with a fuel line in an engine and can conveniently provide a sound-deadening link in the fuel line of a vehicle between a body-mounted portion and an engine-mounted portion thereof.
    Type: Grant
    Filed: September 1, 2004
    Date of Patent: September 27, 2005
    Assignee: Delphi Technologies, Inc.
    Inventors: Michael R. Raney, Eugen Maier
  • Patent number: 6935315
    Abstract: A fluid rail for conveying an actuating fluid under pressure from an actuating fluid source to a respective fuel injector of an internal combustion engine includes a rail assembly being disposable in a space defined in part by a rocker arm carrier of the engine and having; a. a first rail portion having a substantially cylindrical inside diameter defining a first substantially cylindrical flow passage; b. a second rail portion having a substantially cylindrical inside diameter defining a second substantially cylindrical flow passage; c. having a volume of between 15 cubic inches and 60 cubic inches. A method of conveying an actuating fluid under pressure from an actuating fluid source to a respective fuel injector of an internal combustion engine is further included.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: August 30, 2005
    Assignee: International Engine Intellectual Property Company, LLC
    Inventor: Kenneth R. Seymour, II
  • Patent number: 6932061
    Abstract: A fuel tank includes fuel pipes which are configured to resist bubble disruption of the fuel pump, minimizing the risk of fuel running out when the tank level becomes low. The fuel tank includes a fuel tank body with a fuel feed conduit operatively attached thereto, for feeding fuel to a fuel injection system. The fuel feed conduit has a pickup inlet which opens into the fuel tank body, allowing fuel to be drawn outwardly by a fuel pump of the fuel injection system. The fuel tank also includes a fuel return conduit with a return port inside the fuel tank body, for returning unused fuel therethrough to the fuel tank body. The return port of the fuel return conduit is directed toward the pickup inlet of the fuel feed conduit. The fuel feed and return conduits may be fixed to the fuel tank body using a plate-shaped member.
    Type: Grant
    Filed: July 19, 2004
    Date of Patent: August 23, 2005
    Assignee: Honda Motor Co., Ltd.
    Inventor: Yuichiro Tsuruta
  • Patent number: 6928984
    Abstract: High pressure fluid systems, such as those found in common rail fuel systems for engines, often need a low pressure containment system to appropriately address the possibility of fuel leakage around the engine. In addition, such high pressure systems also often require flow to go from one location, such as the common rail, to another location, such as a fuel injector, while undergoing a direction change because of spacial constraints around the engine. The present invention utilizes an elbow component with valve surfaces on its two faces that are oriented at about 90° with respect to one another. When the elbow component is fastened to the head with first fasteners and fastened to a flow limiter housing in another direction with second fasteners, a quill tube is compressed between the valve surface on the elbow component and a similar conical seat on a fuel injector in one direction while also compressing a short tube and flow limiter between the other valve surface of the elbow component and the common rail.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: August 16, 2005
    Assignee: Caterpillar Inc.
    Inventors: David M. Shamine, Albrecht M. Ritter
  • Patent number: 6925989
    Abstract: The invention relates to a fuel system having pressure pulsation damping. The invention specifically locates restrictors in relation to identified critical elements of the system to control the maximum operating system pulse magnitude, as well as dampening the overall pulsations of the system.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: August 9, 2005
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Christopher John Treusch, Joe Zhi Li, Robert Eugene Wattleworth
  • Patent number: 6923162
    Abstract: A fuel-injection system for injecting fuel into an internal combustion engine, having at least one fuel injector and a fuel-distributor line, is provided for each fuel injector with a connecting piece, which is connectable to an inflow section of the fuel injector. The connecting piece is connectable to the fuel injector via a screw connection made up of a screw cap and a thread. A retaining sleeve is able to be slipped with form locking over the screw cap and a counter-hold section, matched in form, on the side of the thread, in order to prevent a twisting of the screw cap and the thread relative to one another.
    Type: Grant
    Filed: September 20, 2002
    Date of Patent: August 2, 2005
    Assignee: Robert Bosch GmbH
    Inventor: Ferdinand Reiter
  • Patent number: 6923160
    Abstract: The invention relates to a high pressure fuel accumulator for an accumulator injection system in internal injection engines, comprising a base body which is provided with a longitudinal recess which has a plurality of connecting bores emanating therefrom. The inner chamber of the longitudinal recess is essentially cylindrical in shape and has at least one rib shaped section on the inner perimeter of the longitudinal recess into which a connecting bore formed in the longitudinal recess leads.
    Type: Grant
    Filed: March 5, 2004
    Date of Patent: August 2, 2005
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Wirkowski, Eckbert Zander
  • Patent number: 6918378
    Abstract: In a high pressure fuel injection pipe, pipe extension and heat treatment are repeated by using a header manufactured by transformation induced plastic type strength steel. A process for depositing residual austenite is then performed, after which a final pipe extension process is performed, and the joint portion is molded and bending processing is performed without performing perfect annealing at the size of a product.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: July 19, 2005
    Assignee: Usui Kokusai Sangyo Kaisha Limited
    Inventors: Masayoshi Usui, Kikuo Asada, Teruhisa Takahashi
  • Patent number: 6918377
    Abstract: A fuel injection nozzle is proposed, in which an inner nozzle needle and an outer nozzle needle can be actuated independently of one another. Upon opening of the outer nozzle needle, a stream of fuel is injected into the combustion chamber in the direction of the longitudinal axis of the fuel injection nozzle, while upon opening of the inner nozzle needle, the fuel is injected laterally into the combustion chamber.
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: July 19, 2005
    Assignee: Robert Bosch GmbH
    Inventor: Joachim Boltz
  • Patent number: 6916048
    Abstract: The fitting has a high-pressure fuel supply conduit, and the injector has a hollow body having a threaded seat engaged by a threaded portion of the fitting. The fitting has a shoulder located between the threaded portion and another portion of the fitting, and the hollow body has a shoulder on a non-recessed outer surface of the hollow body. The two shoulders are precision machined so they are parallel in use; and the usual high-pressure fuel sealing washer is inserted between the two shoulders so machined. More specifically, the shoulder of the fitting has a groove housing the washer, and the shoulder of the hollow body undergoes circular spot facing to form a series of circular cavities concentric with the axis of the threaded seat and characteristic of Ra=1.6 surface roughness.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: July 12, 2005
    Assignee: C.R.F. Societa Consortile per Azioni
    Inventor: Mario Ricco
  • Patent number: 6907863
    Abstract: A fuel distributor for distributing fuel supplied by pressure through a fuel feed pipe by a fuel feed system to a plurality of fuel injectors is capable of effectively reducing the amplitude of a pulsative pressure wave and the sound levels of transmitted sounds. The fuel distributor includes a fuel rail, and a fuel distribution line including a pipe fitting connected to the fuel feed pipe, and first and second branch pipes each having one end connected to the pipe fitting and the other end connected to the fuel rail. The first and the second branch pipes are connected respectively to different parts of the fuel rail.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: June 21, 2005
    Assignee: Sanoh Kogyo Kabushiki Kaisha
    Inventor: Kenichi Henmi
  • Patent number: 6892706
    Abstract: A common rail fuel injection device for internal combustion engines includes a housing, a high-pressure fuel connection, and a fuel return connection including a plug part for connection to a fuel return line. To make the fuel injection device easier to assemble, the fuel return connection includes a socket part, which is secured in fuelproof fashion in a fuel return opening in the housing and onto which the plug part is placed in fuelproof fashion.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: May 17, 2005
    Assignee: Robert Bosch GmbH
    Inventors: Dieter Kienzler, Kurt Frank, Thomas Kreutzer
  • Patent number: 6886537
    Abstract: In an accumulation type fuel injection system for an internal combustion engine, a common rail is formed with an accumulation chamber inside a peripheral wall portion so that a central axis of the accumulation chamber is deviated from that of the common rail, which has a cross section in a complete round shape. Thus, a thick wall portion having thicker wall than other portion of the peripheral wall portion is formed in the peripheral wall portion. A plurality of pipe connecting portions is formed radially inside the thick wall portion. A plurality of pipe connectors is formed separately from the common rail and is connected to the common rail at the pipe connecting portions. As a result, machining of an outer periphery of the common rail is simplified.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: May 3, 2005
    Assignee: Denso Corporation
    Inventor: Jun Kondo
  • Patent number: 6880528
    Abstract: The present invention relates to an accumulator-type injection system for injecting fuel from an accumulator into a combustion chamber of an internal combustion engine by means of injectors, the injectors being arranged completely within the cylinder head of the internal combustion engine.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: April 19, 2005
    Assignee: Siemens Aktiengesellschaft
    Inventors: Wendelin Klügl, Johann Warga, Marcus Unruh
  • Patent number: 6877484
    Abstract: A fuel-injection system for the injection of fuel into an internal combustion engine includes at least one fuel injector and a fuel-distributor line as well as for each fuel injector a corrugated-tube bellows, which is able to be connected to an inflow section of the fuel injector. Deformation-energy absorbing elastomeric material abuts with an initial stress against at least some sections of the corrugated-tube bellows.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: April 12, 2005
    Assignee: Robert Bosch GmbH
    Inventor: Ferdinand Reiter
  • Patent number: 6874477
    Abstract: A mounting arrangement with a fuel rail having a plurality of fuel injector cups, a plurality of fuel injectors, and a clip. The fuel injector cups include a cylindrical tube defining a longitudinal axis, a fuel rail mounting section disposed at a first end of the tube, and a lip at a second end of the tube. Each of the fuel injectors corresponding to one of the plurality of fuel injector cups. The fuel injectors have a housing with a retention groove. The clip engages both the lip of the fuel injector cup and the retention groove in the housing of the fuel injector to secure the fuel injector to the fuel injector cup and allow the fuel injector to reciprocate along the longitudinal axis.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: April 5, 2005
    Assignee: Siemens VDO Automotive Corp.
    Inventors: Jack Richardson Lorraine, Todd Matthew Answine, Dean Leigh Spiers
  • Patent number: 6871634
    Abstract: A fuel injection system for injecting fuel into an internal combustion engine, including at least one fuel injector and a fuel rail, includes, for each fuel injector, an intake connectible to an intake section of the fuel injector. A corrugated tube is arranged between the intake of the fuel rail and the intake section of the fuel injector. The corrugated tube includes two identical end sections that are able to be brought together concentrically with guide sections of the intake section of the fuel injector and of the intake of the fuel rail. Sealing arrangement are undetachably arranged at the end sections.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: March 29, 2005
    Assignee: Robert Bosch GmbH
    Inventors: Werner Berger, Martin Mueller, Andreas Glaser, Anh Tuan Hoang, Martin Buehner, Cedric Olivier
  • Patent number: 6871638
    Abstract: A common rail has an accumulation pipe in which high pressure fuel is accumulated, a pipe joint to which a high pressure pipe is connected and an orifice member housed inside the pipe joint. The orifice member is provided with a conduit through which a fuel port formed in the accumulation pipe communicates with the high pressure pipe. The conduit is provided at an end thereof with an orifice. The orifice serves to reduce pressure pulsation generated by fuel injection of an injector so that fuel pressure in the common rail is stable. Since the orifice is formed in the orifice member housed in the pipe joint, the orifice is easily and accurately manufactured at a lower cost, compared to an orifice formed in the accumulation pipe. It is easy to standardize the manufacture of plural models of common rails whose orifice diameters are different.
    Type: Grant
    Filed: January 6, 2004
    Date of Patent: March 29, 2005
    Assignee: Denso Corporation
    Inventor: Jun Kondo
  • Patent number: 6851412
    Abstract: A fuel injection system for a piston engine, in which the piston engine comprises an engine block with cylinders arranged thereto and at least one fuel injector nozzle arranged for each cylinder and connected to the fuel injection system and in which the fuel injection system comprises at least one fuel pressure accumulator. The fuel injection system comprises a dedicated fuel pressure accumulator for each cylinder.
    Type: Grant
    Filed: April 7, 2003
    Date of Patent: February 8, 2005
    Assignee: Wartsila Finland Oy
    Inventor: David C. Jay
  • Patent number: 6843234
    Abstract: A fuel injector includes: a body that extends along a longitudinal axis between an inlet and an outlet; a seat, which is coupled to the body proximate the outlet, defines an opening through which fuel is adapted to flow into the internal combustion engine, an armature, which moves along the longitudinal axis between first and second configurations with respect to the seat; and an inlet tube assembly, which is coupled to the body proximate the inlet, includes first and second inlet tube members. The first inlet tube member extends along the longitudinal axis between proximal and distal ends, and the proximal end and the inlet of the body provide a first fluid-tight coupling. The second inlet tube member extends along a bending path between first and second end, and the first end and the distal end of the first inlet tube member provide a second fluid-tight coupling.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: January 18, 2005
    Assignee: Siemens VDO Automotive Corp.
    Inventor: Didier Jean de Vulpillieres
  • Patent number: 6843275
    Abstract: A high-pressure fuel injection pipe has a connecting head portion increased in diameter by buckling molding at the end of a thick and small-diameter metallic pipe. An under-head portion of the connecting head is formed with a thick wall portion that satisfies conditions of: a radius of curvature R1 of a portion A of the thick wall portion continuing to the connecting head is 0.03 to 0.15 times the outer diameter of the pipe; a radius of curvature R2 of a portion B continuing from the portion A of the thick wall portion to a straight pipe portion is 0.3 to 1.5 times the outer diameter of the pipe; and a maximum diametrical size w of the thick wall portion is 0.25 to 0.4 times a maximum diametrical projecting length W of the connecting head.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: January 18, 2005
    Assignee: Usui Kokusai Sangyo Kaisha Limited
    Inventor: Nobuo Kato