Specific Fuel Line Mounting Means Patents (Class 123/469)
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Patent number: 6502552Abstract: A fuel delivery system comprises fuel rail (26), at least one fuel injector (30), a flex cable (72) extending along a length of the fuel rail (26), and lead (70) extending from the flex cable (72). (FIG. 2). Lead (70) extends to an electrical connector (34). (FIG. 2). Electrical connector (34) connects to the fuel injector 930) and attaches to the fuel rail (26).Type: GrantFiled: October 4, 2001Date of Patent: January 7, 2003Assignee: Siemens VDO Automotne Inc.Inventor: Ki-Ho Lee
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Patent number: 6497220Abstract: A high-pressure connection for a fuel injection system for internal combustion engines is proposed, which compensates for errors of alignment between the high-pressure line and the high-pressure connection without any bending stress being exerted on the high-pressure line.Type: GrantFiled: March 30, 2001Date of Patent: December 24, 2002Assignee: Robert Bosch GmbHInventor: Friedrich Boecking
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Patent number: 6497219Abstract: A common rail housing for a common rail injection system is composed of a pressure accumulation pipe whose outer circumference is formed in complete round shape in cross section and which is provided inside with a pressure accumulation chamber having oval cross section and a plurality of blanch pipes each of which is provided inside with a fuel conduit bore. Outer circumference of the oval cross section has a specified portion whose curvature is smaller than that of complete round shape having an area equal to that of the oval cross section. Each of the blanch pipe is connected to the pressure accumulation pipe so that the fuel conduit bore and the pressure accumulation chamber intersect nearly perpendicularly to each other at the specified portion. Accordingly, when fuel is supplied to the pressure accumulation chamber, not only the stresses concentrated on the specified portion are limited but also wall strength of the pressure accumulation pipe at the specified portion is reinforced.Type: GrantFiled: April 5, 2001Date of Patent: December 24, 2002Assignee: Denso CorporationInventor: Tetsushi Natsume
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Patent number: 6481420Abstract: A method and an apparatus for maintaining the alignment of a fuel injector during shipping and normal use. In one embodiment of the invention, a clip for retaining a fuel injector to a fuel rail cup that has an annular flange is provided. The clip has a substantially flat base to at least partially surround an end of the fuel injector and a plurality of upstanding tangs to receive and substantially surround the annular flange. An alignment protrusion is also provided on the clip to interface with the annular flange to prevent axial rotation of the fuel injector relative to the fuel rail cup.Type: GrantFiled: January 30, 2001Date of Patent: November 19, 2002Assignee: Visteon Global Technologies, Inc.Inventors: Gerard N. Panasuk, Jamey M. Chatlos, Matthew M. Cole, Paul P. Pucci, Raymond N. Maurer
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Patent number: 6470856Abstract: The invention relates to a method for machining a common rail for a common rail fuel injection system of an internal combustion engine, having a base body, which is equipped with a plurality of connection openings. The invention also relates to a common rail and to a connection stub for application of the method. In the method, the base body is deformed in the region of the connection openings. In the region of each of the connection openings, one through bore is provided, which has two segments of different-sized internal diameters. The connection stub of the invention is characterized in that the outside diameter of the connection stub, on its end toward the common rail, is substantially equivalent to the internal diameter of the segment of the through bore in the common rail having the larger diameter.Type: GrantFiled: September 5, 2001Date of Patent: October 29, 2002Assignee: Robert Bosch GmbHInventor: Friedrich Boecking
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Patent number: 6435161Abstract: An engine of an outboard motor includes a fuel injection system. In a preferred mode, the fuel injection system comprises a high pressure fuel system and a vapor separator assembly. The high pressure fuel system includes a fuel injector that is removably attached to the engine. The vapor separator assembly includes a vapor separator and is also removably attached to the engine. The high pressure fuel system and said vapor separator assembly are connected by a quick connector. Preferably, one end of the quick connector is formed from an outlet end of a fuel filter.Type: GrantFiled: August 24, 2000Date of Patent: August 20, 2002Assignee: Sanshin Kogyo Kabushiki KaishaInventor: Masahiko Kato
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Publication number: 20020096147Abstract: A connection for a feed line at a feed pump pumping fuel out of a fuel tank, includes a nonreturn valve disposed in a horizontal portion of a connection stub. The connection stub is held on the feed pump by a latching device. The connection permits a particularly compact configuration of the feed pump.Type: ApplicationFiled: January 14, 2002Publication date: July 25, 2002Inventor: Ralf Muhlhausen
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Patent number: 6382186Abstract: A fuel injection valve for internal combustion engines, having a holder body, which can be braced with a valve body that protrudes into the engine combustion chamber. A fuel inflow conduit extending from one end is provided that is formed by a longitudinal bore and a transverse bore that intersects the longitudinal bore. The injection port of the transverse bore forms a lateral pressure connection on a radial circumferential wall of the holder body for a fuel delivery line. In the region of a radial circumferential wall face opposite the lateral pressure connection, the holder body has a radially inward-pointing flat face.Type: GrantFiled: December 1, 1999Date of Patent: May 7, 2002Assignee: Robert Bosch GmbHInventors: Walter Kulovits, Juergen Gottschling, Werner Teschner
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Publication number: 20020046736Abstract: A fuel rail is formed by a lost core process. The core is formed of metal, and then over-molded with plastic. The plastic over-molded metal core is immersed in a hot bath of glycolitin oil. The metal core melts, leaving the plastic overmold fuel rail. Attachment features can be formed in the fuel rail to attach fuel injectors by a snap fit connection, a threaded connection, or a twist and lock connection.Type: ApplicationFiled: July 26, 2001Publication date: April 25, 2002Inventors: Graham T. Bolsover, Lisa Whaley, Jon-David Kehoe, Ki Ho Lee
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Publication number: 20020046737Abstract: A fuel injection system for an internal combustion engine is provided that includes a fuel injector having an injector housing with first and second opposing portions. An injector passage extends between the first and second portions. A valve is disposed in the injector passage for selectively permitting fuel to flow from the first portion to the second portion. A fuel rail having a fuel passage includes a first opening receiving the first portion with the injector passage and fluid communication with the fuel passage. An intake manifold has a second opening receiving the second portion. A polymer layer extends from the fuel rail and intake manifold about at least a portion of the fuel injector sealing the first and second portions respectively to the fuel rail and intake manifold for preventing fuel from leaking from the fuel injection system. The injector wiring may also be integrated into the fuel injection system.Type: ApplicationFiled: October 16, 2001Publication date: April 25, 2002Applicant: Siemens Automotive Inc.Inventors: Ki-Ho Lee, Lisa Whaley
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Patent number: 6374806Abstract: A fluid delivery system for delivering a supply of a fluid from a fluid source to a fuel injector includes a rail for conveying a fluid and being positionable proximate the fuel injector. The rail has a fluid passageway defined therein, the fluid passageway being in fluid communication with the source of fluid. A connector is in fluid communication with both the rail and with the fuel injector for fluidly connecting the rail to the fuel injector. The connector is universally moveable in three axes for accommodating static tolerances existing between the rail and the fuel injector and for accommodating dynamic relative motion between the rail and the fuel injector such that stresses imposed on the fuel injector resulting from being attached to the rail are substantially eliminated.Type: GrantFiled: October 23, 2000Date of Patent: April 23, 2002Assignee: International Truck and Engine Corp.Inventors: Philip D. Keeley, Kenneth R. Seymour, II, Martin R. Zielke, James H. Yager, John A. Serio
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Patent number: 6374805Abstract: A fluid delivery system for delivering a supply of a fluid from a fluid source to at least one fuel injector includes a rail for conveying a fluid and being positionable proximate the fuel injector. The rail has a fluid passageway defined therein, the fluid passageway being in fluid communication with the source of fluid. A connector is in fluid communication with both the rail and with the fuel injector for fluidly connecting the rail to the fuel injector. The connector is universally shiftable in three orthogonal axes for accommodating static tolerances existing between the rail and the fuel injector and for accommodating dynamic relative motion between the rail and the fuel injector.Type: GrantFiled: September 1, 2000Date of Patent: April 23, 2002Assignee: International Truck and Engine Corp.Inventors: Kenneth R. Seymour, II, Martin R. Zielke, Edgardo Y. Estacio
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Patent number: 6367503Abstract: A plastic tank comprises a line which is connected at least in certain sections to its wall and is formed in one piece with the plastic tank. For its production, the plastic tank is injection-moulded between a hollow mould and an inner mould inserted into the latter, the mould having a recess, in which a sprue body is formed as the starting material for the line. Before this sprue body can solidify completely, material is blown out from it by means of the internal gas pressure or pressure blowing technique via channels provided in the mould, so that the required line is created there. The lines may be arranged on the outside and/or inside and parallel and/or at an angle to the tank walls.Type: GrantFiled: April 3, 2000Date of Patent: April 9, 2002Assignee: Mannesmann VDO AGInventors: Dieter Keller, Martin Maasz, Karl Eck, Christian Kochsmeier
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Publication number: 20020038651Abstract: A support structure for a fuel supply system of a V-type engine having a mechanical connection to fixedly connect an intermediate portion of a fuel supply conduit portion arranged to straddle between the cylinder heads in two banks of the V-type engine to a water jacket assembly disposed to bridge between and rigidly connected to the cylinder heads to thereby provide a rigid vibration-suppressing support for the fuel supply conduit portion of the fuel supply system whereby generation of the working sound of respective fuel injection valves in every cylinders of the V-type engine is suppressed and reduced.Type: ApplicationFiled: September 28, 2001Publication date: April 4, 2002Applicant: NISSAN MOTOR CO., LTD.Inventors: Eiichi Sato, Seiji Ishihara
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Publication number: 20020023606Abstract: A fuel supply device is mounted to a motorcycle engine between two substantially identical air intake connections. The air intake connections each include a body portion with a projection and a flange, each extending radially from the body portion. Fasteners inserted through apertures in the flanges hold the air intake connections to the engine. The protrusion is preferably made of a resilient material, such as rubber. The flange is preferably made of a non-resilient material, such as aluminum. An aperture having an annular recess extends through the projection. The aperture is adapted to receive an internally threaded metal sleeve having an annular protrusion that surrounds the metal sleeve. A threaded fastener preferably extends through the metal sleeve and couples the fuel supply device to the projection. In the event that the fastener is excessively torqued during tightening the metal sleeve can spin in the aperture without damaging the projection.Type: ApplicationFiled: July 19, 2001Publication date: February 28, 2002Applicant: Harley-Davidson Motor Company Group, Inc.Inventor: Andreas Schneider
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Publication number: 20020020395Abstract: The invention relates to an injector for injecting fuel, which is under extremely high pressure, into the combustion chambers of an internal combustion engine. A valve body is provided, which opens and closes a valve chamber received in the injector housing, and an inlet leads from the valve body to the injection nozzle. For actuating the valve body, a control chamber of the injector housing is pressure-relieved by means of a control element. The inlet originating at the high-pressure collection chamber (common rail), extends centrally through the valve body, which is received movably in the injector housing.Type: ApplicationFiled: June 25, 2001Publication date: February 21, 2002Applicant: Robert Bosch GmbHInventor: Friedrich Boecking
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Patent number: 6341595Abstract: A fuel rail for a fuel injection system is disclosed. The fuel rail includes a first portion including a generally elongated base, at least one mounting bracket and a plurality of fuel cup openings in the generally elongated base. The fuel rail also comprises a second, generally U-shaped, portion having a first and second opposing sides. Each of the first and second opposing sides are sealingly connected to the generally elongated base with a laser weld. The second portion also has a supply end having a fuel supply opening, and a closed end, distal from the supply end. The closed end and the supply end are sealingly connected to the generally elongated base with a laser weld. A method of manufacturing the fuel rail is also disclosed.Type: GrantFiled: June 30, 2000Date of Patent: January 29, 2002Assignee: Siemens Automotive CorporationInventors: Joseph Edward Scollard, James Russell Morris, Jeffery Ersin Brittle, Dean Leigh Spiers
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Patent number: 6340019Abstract: An isolator design provides for the isolation of each fuel rail mounting bracket from the intake manifold mounting boss and the screw assembly secures the fuel rail assembly to the intake manifold. The isolator assembly reduces the amount of heat transfer from the hot engine intake manifold to the fuel rail assembly, which in turn transfers heat back to the fuel tank via the fuel return line. The isolation of the fuel rail assembly to the intake manifold is accomplished by an isolator washer placed between the fuel rail mounting bracket and the manifold mounting boss. An isolator sleeve has locking tabs, which snap onto an inside diameter rib on the isolator washer. The mounting screw passes through the isolator washer and isolator sleeve to thereby securely lock each element of the isolator design. The assembly provides a structure for attachment of both isolator parts to the fuel rail mounting bracket.Type: GrantFiled: September 11, 2000Date of Patent: January 22, 2002Assignee: Delphi Technologies, Inc.Inventors: Edgar Samuel Eshleman, Gary John Deangelis
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Patent number: 6338334Abstract: A fuel piping structure for a diesel engine, which is capable of cooling fuel which is flowing through a fuel circuit, especially, through a fuel return circuit, and capable of making the fuel circuit compact in size, is provided. For this purpose, in the fuel piping structure for the diesel engine in which the fuel circuit is provided between a fuel tank (5) and fuel injection nozzles (2) each for each cylinder head (1), a part of the fuel circuit is formed inside an intake manifold (3). Further, the part of the fuel circuit may be a part of a fuel return circuit running from the fuel injection nozzles (2) to the fuel tank (5), and/or a part of a fuel supply circuit running, from the fuel tank (5) to the fuel injection nozzles (2).Type: GrantFiled: March 29, 2000Date of Patent: January 15, 2002Assignee: Komatsu Ltd.Inventor: Hatsuo Ando
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Publication number: 20010042539Abstract: A fuel injector fixing structure for use with an in-cylinder injection type engine is improved to reduce the number of processing man-hours and the number of parts as well as the number of assembling man-hours. In detail, each fuel injector is inserted into an injector fixing hole of a cylinder head, followed by attaching an injector fixing bracket. Then, each connecting portion of a fuel delivery pipe is connected to a fuel inlet of each fuel injector, followed by inserting a common bolt through an fixing boss portion and an injector fixing bracket, and fixing these elements to a common boss portion of the cylinder head. In this way, each fuel injector and the fuel delivery pipe can be fixed in the cylinder head by virtue of a common bolt, thereby making it possible to reduce the number of processing man-hours and the number of parts as well as the number of assembling man-hours.Type: ApplicationFiled: April 27, 2001Publication date: November 22, 2001Inventor: Hisashi Ozeki
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Patent number: 6318339Abstract: A fuel supply line system for a fuel injection nozzle which is inserted into the cylinder head of an internal combustion engine, having a pressure connector that communicates tightly on the inlet side with the connection piece of an inlet tube and on the outlet side is pressed axially, via a sealing face, against a seat face on the nozzle holder body of the fuel injection nozzle by means of a screw connection. A shoulder is formed on the pressure connector, when the pressure connector is screwed into a threaded bore, in order to absorb the tightening moment, the shoulder is pressed against a contact pressure face embodied complimentary to the shoulder on the nozzle holder body and extending annularly all the way around, and that the sealing face is disposed on a body that is provided between the pressure connector and the nozzle holder body and is deformable in a defined way by the screwing in of the pressure connector.Type: GrantFiled: August 3, 1999Date of Patent: November 20, 2001Assignee: Robert Bosch GmbHInventor: Karl Hofmann
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Publication number: 20010029929Abstract: A common rail housing for a common rail injection system is composed of a pressure accumulation pipe whose outer circumference is formed in complete round shape in cross section and which is provided inside with a pressure accumulation chamber having oval cross section and a plurality of blanch pipes each of which is provided inside with a fuel conduit bore. Outer circumference of the oval cross section has a specified portion whose curvature is smaller than that of complete round shape having an area equal to that of the oval cross section. Each of the blanch pipe is connected to the pressure accumulation pipe so that the fuel conduit bore and the pressure accumulation chamber intersect nearly perpendicularly to each other at the specified portion. Accordingly, when fuel is supplied to the pressure accumulation chamber, not only the stresses concentrated on the specified portion are limited but also wall strength of the pressure accumulation pipe at the specified portion is reinforced.Type: ApplicationFiled: April 5, 2001Publication date: October 18, 2001Inventor: Tetsushi Natsume
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Patent number: 6273118Abstract: A draw and return tube assembly, and a process of manufacturing the same, provides a unitized triangular shaped assembly, wherein the draw and the return tubes are each secured to a flange and are secured to one another by a weld at a position opposite the flange. The triangular shape allows the assembly to withstand large external forces without undergoing deformation.Type: GrantFiled: June 26, 2000Date of Patent: August 14, 2001Inventor: Kenneth A. Watson
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Patent number: 6273123Abstract: A draw and return tube fuel assembly having a draw tube and a return tube welded to a flange. The tubes may be extruded in a variety of diameter sizes such that the assembly can be manufactured to connect to any size draw and return fuel line connectors. The method of manufacturing the draw and return tube assembly with extruded tubing eliminates the steps of heating, flaring and cleaning and thereby eliminates the corresponding hazardous materials created as a byproduct of these eliminated steps.Type: GrantFiled: October 15, 1999Date of Patent: August 14, 2001Inventors: Neal L. Keefer, Kenneth A. Watson
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Patent number: 6269798Abstract: Two A-shaped brackets for clamping three linearly located injectors onto a cylinder head of an engine. Each bracket has one top branch and two foot branches. Two top branches of the two brackets cooperatively press down a center injector among the three, and two pairs of foot branches of the two brackets press down two side injectors, respectively. Each injector has a flange that is pressed down by the two top branches of the two brackets or the two foot branches of the associated bracket Each bracket has an opening at its approximate center so that a screw shaft extending from the cylinder head can penetrate. Each bracket is secured on a cylinder head by tightening a nut over the screw shaft.Type: GrantFiled: November 10, 1999Date of Patent: August 7, 2001Assignee: Isuzu Motors LimitedInventors: Kouichi Takahashi, Hiroyuki Ichikawa
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Patent number: 6269797Abstract: A cylinder head, air intake manifold, fuel injector and fuel rail arrangement for an overhead valve engine that provides a compact assembly. The fuel rail is attached to the cylinder head by fasteners that extend parallel to the fasteners that fix the intake manifold to an adjacent portion of the cylinder head. The layout is such, however, that there is no interference between the various components and thus accessibility is improved while cost is minimized.Type: GrantFiled: November 19, 1998Date of Patent: August 7, 2001Assignee: Yamaha Hatsudoki Kabushiki KaishaInventor: Masahiro Uchida
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Publication number: 20010009148Abstract: To provide a common rail capable of injecting fuel stably by restraining pressure variation in an injection pipe and having excellent stability of seal at a portion thereof connected to the injection pipe, in a common rail constituted by providing a branch hole having a pressure receive seat face communicating with a main pipe rail and opened outwardly at a boss portion provided at a peripheral wall portion of the main pipe rail, bringing and engaging a pressing seat face portion constituted by a connection head portion in contact with the pressure receive seat face and fastening to connect the pressing seat face portion thereto in accordance with pressing operation under a neck of the connection head portion by screwing a fastening nut, by providing an orifice pipe having an outer diameter the same as or larger than a hole diameter of the branch hole in the branch hole, the orifice pipe does not influence on seal performance and the common rail is constituted to be capable of injecting fuel stably by restraiType: ApplicationFiled: December 21, 2000Publication date: July 26, 2001Inventors: Kikuo Asada, Shoichiro Usui
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Patent number: 6237571Abstract: An apparatus and a method for connecting a fuel pressure tube to a side feed injector device of an internal combustion engine providing a conduit for leak-back transfer from the injector to a take-off point for return to the fuel feed system having a holder for fitting onto an injector body and serving to receive a fuel pressure tube, a housing member configured to cooperate with the holder to define a leak-back receptacle, and ducts to enable communication of a leak-back flow of fuel from the injector and to enable controlled delivery of the leak-back fuel for re-use.Type: GrantFiled: August 26, 1999Date of Patent: May 29, 2001Assignee: Perkins Engines Company LimitedInventor: Mark Harrison
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Patent number: 6227169Abstract: A delivery pipe of a fuel supply system for injectors mounted on a cylinder head is divided for each injector or a group of injectors. Divided pipe parts are coupled with each other through a flexible member to allow flexing of the delivery pipe. Each injector is connected with the delivery pipe through a flexible coupling member and with the cylinder head through a flexible cushioning member. Alternatively, a fuel passage is formed in the cylinder head in place of the delivery pipe to supply fuel to the injectors after heating in the cylinder head.Type: GrantFiled: September 22, 1999Date of Patent: May 8, 2001Assignees: Nippon Soken, Inc., Toyota Jidosha Kabushiki KaishaInventors: Yasuyuki Sato, Tokio Kohama, Kimitaka Saito, Masaaki Yano
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Patent number: 6199539Abstract: A circular cross-sectional fuel pipe can be prevented from undesired rotation in an engine cylinder head, by a key-key slot combination having a relatively small radial dimension. The key slot is formed by a groove formed in a cylindrical sleeve that is press fit in a counterbore machined in the cylinder head. The mating key can be a ball, or pin, or bar press fit into a side surface of the fuel pipe.Type: GrantFiled: June 22, 2000Date of Patent: March 13, 2001Assignee: Detroit Diesel CorporationInventors: Samuel Pearlman, James Edward McCarthy, Jr., David Henry Mitchell, Ronald Michael Tkac
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Patent number: 6178950Abstract: A noise reducing fuel injection system includes an engine having a head with an injector bore. A fuel injector is suspended in the injector bore via a noise reducing mounting bracket. The mounting bracket has a clamping portion that clamps to the fuel injector, a support that is attached to the engine and an arm portion extending between the clamping portion and the support. The fuel injector is allowed to slide a slight distance in and out of the injector bore when the engine is running by either making the arm portions slightly flexible, by including resilient members between the support and the engine, or both.Type: GrantFiled: July 18, 1997Date of Patent: January 30, 2001Assignee: Caterpillar Inc.Inventors: Alan R. Stockner, Mike Youakim
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Patent number: 6167855Abstract: An apparatus and method for incorporating a plurality of various fuel and emission components generally located on the top or outside of an internal combustion engine into a completed sub-assembly that can be delivered to an engine assembly line and installed as a unit on the engine. The air-fuel system components are assembled in a unitized or integrated air-fuel module which is then assembled to the engine. Also disclosed is a method of assembling an engine including providing an intake manifold base having at least one valve cover integrally molded in a bottom of the intake manifold base and having integral intake manifold runners; assembling an integrated air-fuel module at a first location; and then attaching the integrated air-fuel module to the engine at a second location.Type: GrantFiled: June 10, 1999Date of Patent: January 2, 2001Assignee: Siemens Canada LimitedInventors: John Mammarella, Frank Vyskocil
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Patent number: 6167903Abstract: A fuel dispensing system for a vehicle comprises a manifold assembly having an inlet attachable to a pressure gauge port on a vehicle's fuel line. The inlet is in communication with a pair of outlets, a first of which has an elongated flexible hose attached thereto. The flexible hose includes a nozzle at a distal end through which gasoline may be selectively delivered to an external source. A fuel pressure gauge may be attached to the second outlet, if neccessary. Each outlet includes an internally disposed safety valve means for automatically disabling fuel flow in the event that the fuel gauge or hose become detached therefrom. The hose may be conveniently disposed beneath the vehicle's engine hood when not in use.Type: GrantFiled: January 22, 1999Date of Patent: January 2, 2001Inventor: Stephen E. Newman
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Patent number: 6152112Abstract: A diesel engine fuel jumper line assembly is disclosed which provides both improved performance and ease in manufacturing. The fuel jumper line forms a loop with the fuel injector and the fuel manifold/engine block. There is an improved connection between the injector and the fuel jumper lines with positive sealing which provides for substantially enhanced sealing and more effective maintenance. The novel sealing design eliminates the prior metal-to-metal seal and has chamfer-shaped fittings. A reinforced connection in which the fuel manifold is bolted to the fuel line jumper block is also provided, which prevents fuel leaking and mixing with the lubrication oil as well as preventing lubricating oil leaking outside of the engine through the bolt hole.Type: GrantFiled: August 3, 1999Date of Patent: November 28, 2000Inventor: Edoardo Coppola
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Patent number: 6148799Abstract: An intake manifold for the supply of air for an internal combustion engine with a fuel distributor, in which the fuel distributor is fixed to the intake manifold through a plug-in, catch or snap connection.Type: GrantFiled: November 25, 1998Date of Patent: November 21, 2000Assignee: Filterwerk Mann & Hummel GmbHInventors: Rudolf Leipelt, Volker Ernst
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Patent number: 6142122Abstract: A fuel injection valve for internal combustion engines. The valve includes a nozzle needle longitudinally displaceably guided in a nozzle body and having a tensioning nut which axially braces the nozzle body with a nozzle holder, optionally, by way of a transition piece whose respective faces rest on an adjacent face. The valve also includes at least one feed pipe extending in the nozzle holder and the nozzle body, and fuel-carrying transfer points between the nozzle holder and the nozzle body. A portion of at least one of interacting faces (3a; 4a) being constructed as a raised contact surface (11) with surface elements surrounding the fuel-carrying transfer points.Type: GrantFiled: June 21, 1999Date of Patent: November 7, 2000Assignee: DaimlerChrysler AGInventor: Martin Hoppenstedt
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Patent number: 6119657Abstract: A connector is disclosed which is intended for use with an injector. The connector comprises a projection defining an inlet passage sealed, in use, within a bore provided in the injector. The inlet passage communicates with at least one outlet passage. The connector further comprises at least one tooth received within a recess provided in the injector to secure the connector to the injector. The recess is conveniently defined by a body and nut forming part of the injector.Type: GrantFiled: July 17, 1997Date of Patent: September 19, 2000Assignee: Lucas IndustriesInventors: John William Stevens, Keith Graham Walker, Martin John Ralph, Alan Conway Green, Andrew Joseph John Drummond, David Frederick Greenfield, Adrian Mark Greaney, Peter Francis Bradford
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Patent number: 6102007Abstract: A fuel injection system for injecting fuel into an internal combustion engine having at least one fuel injection valve, which has a fuel inlet orifice on an inlet section and having a fuel distribution line, which has, for each fuel injection valve a fuel outlet orifice that may be connected to the fuel inlet orifice of the fuel injection valve, and a connection fitting, connected downstream to the fuel outlet orifice. A connection arrangement injection valve to the respective fuel outlet orifice of the fuel distribution line is provided. The connection arrangement includes an annular seal support and a sleeve that can be inserted in the fuel inlet orifice. The annular seal support has a first sealing element for sealing the seal support against the inlet section of the fuel injection valve, and a second sealing element for sealing the seal support against the connection fitting of the fuel distribution line.Type: GrantFiled: February 10, 1999Date of Patent: August 15, 2000Assignee: Robert Bosch GmbHInventor: Thomas Furst
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Patent number: 6073612Abstract: Deformation of a delivery pipe in which injectors for injecting fuel into the combustion chambers of corresponding cylinders in an internal combustion engine are accommodated, is suppressed, thereby preventing deterioration of the fuel sealing. At least two mounting portions are provided on respective lengths of the delivery pipes that extend outward from opposite ends of a length of the delivery pipe along which injector-inserting portions are disposed for accommodating the injections. This arrangement of the mounting portions prevents deformation of at least the length of the delivery pipe in which the injector-inserting portions are disposed, thereby preventing deterioration of the fuel sealing between the injectors and the injector-inserting portions of the delivery pipe which could otherwise be caused by high-pressure fuel, thermal contractions at very low temperatures, or the like.Type: GrantFiled: February 8, 1999Date of Patent: June 13, 2000Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kenji Ohkubo, Masaaki Yano, Masanori Sugiyama
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Patent number: 6050614Abstract: A swivel flange seal joint assembly which includes a tube having an integral, enlarged ferrule and swivel flange is described. The ferrule is enlarged and includes oversized fastener openings configured to allow circumferential alignment between the swivel flange and openings in a mating surface. The assembly also includes a gasket having openings, and the gasket is positioned between the ferrule and the mating surface so that a seal is formed between when the fasteners which extend through the flange, ferrule, gasket and mating surface openings are tightened.Type: GrantFiled: December 17, 1996Date of Patent: April 18, 2000Assignee: General Electric CompanyInventor: Ralph A. Kirkpatrick
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Patent number: 5979411Abstract: The injector has a recirculating conduit with an end element having two rsses, each incorporating an opening; the backflow connector has a connecting element having a groove, and is fitted to the end element so that the groove corresponds with the openings; a C-shaped snap-on fastener has two arms with two portions for simultaneously engaging or releasing the recesses and, via the openings, also the groove; and the backflow connector is connected and disconnected by translating the fastener, which, however, remains secured to the injector at all times.Type: GrantFiled: June 12, 1998Date of Patent: November 9, 1999Assignee: Elasis Sistema Ricerca Fiat Nel Mezzogiorno Societa Consortile Per AzioniInventor: Mario Ricco
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Patent number: 5957112Abstract: A fuel injector arrangement for an internal combustion engine of the type utilized to power an outboard motor of a watercraft is disclosed. The engine is oriented with its crankshaft vertically extending, such that the engine has a top and a bottom, a first end and a second end, and a side between the ends. An intake passage leads through a side of the engine to a combustion chamber therein. A fuel injector is positioned along the side of the engine and arranged to deliver fuel into air flowing through the passage. In one arrangement, the fuel injector is connected to an intake manifold connected to the side of the engine and having a passage therethrough leading to the intake passage. In this arrangement, a fuel delivery passage is formed in the manifold through which fuel is delivered to the injector. In a second embodiment, the fuel injector is connected to a cylinder head of the engine and the fuel delivery passage is formed in the cylinder head.Type: GrantFiled: April 11, 1997Date of Patent: September 28, 1999Assignee: Sanshin Kogyo Kabushiki KaishaInventors: Masanori Takahashi, Hitoshi Watanabe
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Patent number: 5950602Abstract: The end portion of the side wall of the cylinder head where the rocker cover is attached is extended along the rocker cover, and the position of this end is set at a higher position than the position of the camshaft. The connector tube of the fuel injection nozzle is so formed that it extends obliquely downward at the upper part of the camshaft, facing onto outside from the through hole formed in the extension of the end of the side wall of the cylinder head, to be connected to the fuel supply pipe. Thereby, when the rocker cover is removed, works such as removing the fuel supply pipe from the connector tube and the like are not required, resulting the improvement of the workability. Furthermore, the capacity of the oil separator in the rocker cover can be sufficiently secured.Type: GrantFiled: September 26, 1997Date of Patent: September 14, 1999Assignee: Nissan Motor CQ., Ltd.Inventor: Naotoshi Shinohara
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Patent number: 5934253Abstract: A fuel injection apparatus has a delivery pipe 7, an injector 8, fixing hooks 56 and fixing hook grooves 38. The delivery pipe 7 has an electric signal line and a connector 34, the connector 34 being placed at an end of the electric signal line. The injector 8 has an O-ring 52 and an injector side terminal 54 and is mounted to the delivery pipe 7, the O-ring 52 having a center P and sealing a gap between the delivery pipe 7 and the injector 8. The injector side terminal 54 is electrically connected with the connector 34. The fixing hooks 56 and the fixing hook grooves 38 prevent the injector side terminal 54 from sliding with respect to the connector 34 in the direction of an axis of the injector 8. The contacting points between the fixing hooks 56 and the fixing hook grooves 38 are positioned on a line L. The line L passes through the center P of the O-ring 52 and is perpendicular to the axis of the injector 8.Type: GrantFiled: November 20, 1997Date of Patent: August 10, 1999Assignee: Toyota Jidosha Kabushiki KaishaInventors: Susumu Kojima, Keiso Takeda
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Patent number: 5775302Abstract: A fuel distributor pipe (1) which can be subjected to a high internal pressure loading includes at least one connecting arrangement (12) serving for releasably connecting a branch pipe (3) and having a connecting bore (5) which extends radially through the wall of the distributor pipe and which has an inner portion (8) and an adjoining, outer portion (9) which enlarges in a hollow-conical configuration, a screwthreaded socket (12) which is connected to the distributor pipe and whose internal bore (15) extending therethrough continues the connecting bore and serves to receive the branch pipe, and a pressing element (22) having a pressure surface (23) which, when the pressing element is screwed on to a counter-pressure surface (24) provided on a thickened portion (25) of the branch pipe, exerts a force by which a counter-sealing surface (16) of the branch pipe is pressed against the conical wall (18) of the outer portion of the connecting bore.Type: GrantFiled: February 19, 1997Date of Patent: July 7, 1998Assignee: Jurgen GuidoInventors: Jurgen Guido, Norbert Binzer
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Patent number: 5713323Abstract: An integrated air/fuel induction system for a multicylinder internal combustion engine includes an intake manifold assembly having an airbox for providing a source of intake air for consumption by the engine. The intake manifold assembly also includes an air plenum communicating with the airbox. A plurality of intake runners is integrally formed, at least partially, within the airbox, for directing intake air flowing from the plenum into each cylinder of the engine. The airbox thereby encapsulates and utilizes the volume of space surrounding the intake runners. The integrated air/fuel induction system also includes a fuel rail removably latched to the manifold assembly. A biasing member is provided to compensate for any slack between the fuel rail and the manifold assembly. In addition, rotational and axial locators are provided so as to position the fuel rail relative to the engine.Type: GrantFiled: October 4, 1996Date of Patent: February 3, 1998Assignee: Ford Motor CompanyInventors: David Stephen Walsh, Anthony Horvath, John Christian Sorensen, Kristi Marie Hameedi, Gerard Nicholas Panasuk, Phillip Michael Gaskin, James Douglas Taylor
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Patent number: 5682857Abstract: A fuel rail is provided with a mounting clip in each mounting foot to allow secure connection of the fuel rail adjacent an engine manifold. The mounting clip is inserted into a mounting foot after the fuel rail has been manufactured and has a flange which overlies the top of the foot. The clip completely receives a bolt therein and when the bolt is tightened transmits a clamping force to the fuel rail through the flange of the clip. Thus, the bolt bears directly on the clip, not the fuel rail, and can be highly torqued without breaking the fuel rail.Type: GrantFiled: October 1, 1996Date of Patent: November 4, 1997Assignee: Walbro CorporationInventors: Paul F. Briggs, George H. Bucci, David E. Mroczka, Allan L. Tomasco
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Patent number: 5666922Abstract: A fuel line connector for producing recirculation of leakage fuel in a fuel injection valve in which communication of a fuel line with a connection bore of a housing, and with the holder of a fuel injection valve is produced. This is achieved by providing that the fuel line connector has elastically deformable retaining arms, which, after a connecting stub of the fuel line connector has been plugged into a connection bore, engage the housing that contains the connection bore from behind.Type: GrantFiled: May 30, 1995Date of Patent: September 16, 1997Assignee: Robert Bosch GmbHInventors: Erwin Krimmer, Peter Jauernig, Bruno Hezel, Andreas-Bernd Rosenbusch
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Patent number: 5564395Abstract: An internal combustion engine with a V-shaped block is provided with fuel injection apparatus wherein the injection pump elements 16 are inserted in bushings 21, 21a, mounted in the crankcase such a height that the injection line connection 29a of each pump element 16 is as close as possible to the injection line pump connection 29b of the associated injection valve 9.Type: GrantFiled: November 29, 1994Date of Patent: October 15, 1996Assignee: Klockner-Humboldt-Deutz AGInventors: Franz X. Moser, Albert Flotho, Hans-Willi Goebel, Michael Seils
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Patent number: 5520151Abstract: A fuel injection device for internal combustion engines has a fuel distributor device with at least one pipe connector in whose receptacle an injection valve is inserted by its inflow-side, upstream end. A connecting element serves for fixing the injection valve in position axially on the pipe connector of the fuel distributor device and also for fixing it in the circumferential direction. The connecting element, which is constructed as a plastic clip, includes a disc-shaped, circular ring-shaped base element with an inner opening through which the inflow-side end of the injection valve runs in the installed state, the disc-shaped base body being positioned in a circumferential groove of the injection valve. The base element includes two legs which can be closed or opened by means of a locking connection.Type: GrantFiled: April 21, 1995Date of Patent: May 28, 1996Assignee: Robert Bosch GmbHInventors: Juergen Gras, Ferdinand Reiter, Heinz-Martin Krause, Thomas Naeger, Volker Gandert