EP2050953A2 - Collecteur de distribution d'huile à haute pression pour moteur diesel - Google Patents

Collecteur de distribution d'huile à haute pression pour moteur diesel Download PDF

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Publication number
EP2050953A2
EP2050953A2 EP08016720A EP08016720A EP2050953A2 EP 2050953 A2 EP2050953 A2 EP 2050953A2 EP 08016720 A EP08016720 A EP 08016720A EP 08016720 A EP08016720 A EP 08016720A EP 2050953 A2 EP2050953 A2 EP 2050953A2
Authority
EP
European Patent Office
Prior art keywords
oil
reservoir
entrance
manifold
outlet tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08016720A
Other languages
German (de)
English (en)
Other versions
EP2050953A3 (fr
Inventor
Alexander L. Gnesin
Gregory A. Griffin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Engine Intellectual Property Co LLC
Original Assignee
International Engine Intellectual Property Co LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Engine Intellectual Property Co LLC filed Critical International Engine Intellectual Property Co LLC
Publication of EP2050953A2 publication Critical patent/EP2050953A2/fr
Publication of EP2050953A3 publication Critical patent/EP2050953A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00

Definitions

  • This invention relates to internal combustion engines, particularly to diesel engines that power motor vehicles.
  • a known diesel engine comprises a processor-based engine controller that processes data from various sources to develop control data for controlling certain functions of the engine, including fueling of the engine by injection of fuel into engine combustion chambers.
  • Such an engine has an oil pump that delivers oil under pressure to an oil rail, or oil manifold, serving electric-actuated fuel injection devices (fuel injectors), that use oil from the oil rail to force injections of fuel.
  • the pressure at the oil rail is sometimes referred to as injection control pressure, or ICP, and that pressure is under the control of an appropriate ICP control strategy that is an element of the overall engine control strategy implemented in the engine control system.
  • Certain fuel injectors contain electric-actuated valves that control the delivery of pressurized oil in an oil rail to pistons that are stroked when the valves open to force fuel into the engine combustion chambers via plungers. Certain fuel injectors are capable of amplifying ICP to develop very high injection pressures.
  • an oil manifold In order to contain high-pressure oil, an oil manifold is typically a metal casting of suitable shape that is machined at certain locations in order to mate it with other parts of the engine with which it is associated.
  • a typical casting comprises a reservoir having one or more entrances into which oil is pumped to achieve desired ICP.
  • the casting At locations along its length, the casting has outlet tubes through which oil is sourced from the reservoir to the fuel injectors.
  • the cast-in outlet tubes are goosenecks that wrap around portions of the wall that encloses the reservoir.
  • the entrances of the cast-in goosenecks had circular cross sections at the reservoir. A certain minimum wall thickness and a corresponding amount of metal were needed at and adjacent those locations in order to endow the manifold with sufficient strength to assure that stresses in the metal did not exceed specified limits.
  • the inventors have discovered that a differently shaped entrance to a cast-in outlet tube from the reservoir can provide significant weight reduction without compromising compliance with the relevant specification for the oil manifold.
  • the inventors have confirmed this by comparative stress analysis. In a particular example, a weight reduction of about five pounds of iron was achieved.
  • the present invention is embodied in a cast oil manifold by making the entrance openings from the reservoir to the cast-in outlet tubes substantially elliptical, rather than circular.
  • the passages running through the outlet tubes follow a curved path, transitioning along the path from substantially elliptical entrances to circular exits that lead to fuel injectors at the engine cylinders.
  • Each outlet tube presents the outward appearance of a gooseneck wrapping around a portion of the circumference of the body of the manifold that contains the reservoir.
  • One generic aspect of the invention relates to a diesel engine comprising combustion chambers that are fueled by introducing pressurized oil into fuel injectors to cause the fuel injectors to inject fuel and a cast oil manifold comprising a walled body enclosing a reservoir for holding pressurized oil and cast-in outlet tubes through which oil in the reservoir is delivered to the fuel injectors.
  • the cast-in outlet tubes comprise walls that wrap around portions of the walled body.
  • Each outlet tube has an entrance at the reservoir and an exit leading to a respective fuel injector.
  • Each entrance has a substantially elliptical transverse cross section.
  • Another generic aspect relates to the oil manifold that has been described.
  • FIG. 1 is a perspective view of an oil manifold embodying principles of the present invention.
  • Figure 2 is a perspective view of the oil manifold from a different direction.
  • Figure 3 is an enlarged cross section view generally in the direction of arrows 3-3 in Figure 1 .
  • Figure 4 is an enlarged end view generally in the direction of arrow 4 in Figure 1 showing approximately an upper half portion of the oil manifold.
  • Figure 1 shows an oil manifold 10 that mounts on an underlying portion of an internal combustion engine 12, the engine being only schematically indicated.
  • This particular oil manifold is designed to mount on an in-line, six-cylinder diesel engine.
  • Oil manifold 10 is a cast iron part that comprises an elongate body 14 and a series of six cast-in goosenecks 16 at spaced apart locations along the length of body 14.
  • a generally cylindrical reservoir 18 runs lengthwise through body 14 along a longitudinal axis 20.
  • Figure 3 shows one lengthwise end to have an entrance 22 that is communicated by piping (not shown) to an oil pump (also not shown) that pumps oil into reservoir 18.
  • piping not shown
  • oil pump also not shown
  • the drawings show the opposite end of body 14 to be open because they show manifold 10 as cast and thereafter machined, it should be understood that the opposite end is either plugged in any suitably appropriate way.
  • bosses 24, 26 are present along opposite sides of body 14. Headed screws (not shown) pass through these bosses and thread into holes in engine 12 to fasten the oil manifold to the engine.
  • goosenecks 16 form cast-in outlet tubes through which oil in reservoir 18 is delivered to fuel injectors that are schematically shown by the reference numerals 34 in Figure 2 .
  • the walls of the goosenecks wrap around portions of body 14, and each gooseneck comprises a passageway having an entrance 28 at reservoir and an exit 30 leading to a respective fuel injector 34.
  • each entrance 28 has a substantially elliptical transverse cross section with the major axis of the ellipse of each entrance being perpendicular to axis 20 and spanning a distance indicated by the reference numeral 32 in Figure 4 .
  • Each exit 30 has a circular transverse cross section.
  • entrance 28 of each gooseneck 16 is offset from the respective exit 30 along the length of body 14.
  • Each entrance 28 is arranged such that an imaginary line passing through the center of its substantially elliptical transverse cross section perpendicularly intersects axis 20.
  • pressurized oil in reservoir 18 creates flow through the respective gooseneck 16 and into the respective fuel injector to force an injection of fuel into the respective combustion chamber.
  • Oil manifold 10 is manufactured by standard sand casting methods, and after casting, is machined by standard machining techniques for proper fitting to engine 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
EP08016720A 2007-10-16 2008-09-23 Collecteur de distribution d'huile à haute pression pour moteur diesel Withdrawn EP2050953A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/873,045 US20090095571A1 (en) 2007-10-16 2007-10-16 High pressure oil manifold for a diesel engine

Publications (2)

Publication Number Publication Date
EP2050953A2 true EP2050953A2 (fr) 2009-04-22
EP2050953A3 EP2050953A3 (fr) 2010-04-21

Family

ID=39952342

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08016720A Withdrawn EP2050953A3 (fr) 2007-10-16 2008-09-23 Collecteur de distribution d'huile à haute pression pour moteur diesel

Country Status (8)

Country Link
US (1) US20090095571A1 (fr)
EP (1) EP2050953A3 (fr)
KR (1) KR20090038832A (fr)
CN (1) CN101413468A (fr)
BR (1) BRPI0804356A2 (fr)
CA (1) CA2639795A1 (fr)
MX (1) MX2008012679A (fr)
RU (1) RU2008139792A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018224721A1 (fr) * 2017-06-09 2018-12-13 Wärtsilä Finland Oy Élément de distribution de fluide

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2337082A (en) 1998-05-09 1999-11-10 Perkins Engines Co Ltd An i.c engine fuel injection system having a reservoir for actuating fluid

Family Cites Families (21)

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US4601275A (en) * 1982-08-23 1986-07-22 General Motors Corporation Fuel rail
IT208360Z2 (it) * 1986-11-18 1988-05-28 Weber Srl Gruppo per un collettore di carburante con regolatore di pressione integrato per alimentazione ad iniezione di motori a combustione interna
US4966120A (en) * 1987-07-29 1990-10-30 Aisan Kogyo Kabushiki Kaisha Fuel injection system assembly
DE3918410A1 (de) * 1989-06-06 1990-12-13 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung fuer brennkraftmaschinen
US5163406A (en) * 1990-08-07 1992-11-17 Siemens Automotive L.P. Intake manifold/fuel rail
US5074269A (en) * 1991-04-29 1991-12-24 Chrysler Corporation Anti-rotation fuel injector clip
US5176121A (en) * 1992-04-06 1993-01-05 Siemens Automotive Limited Bumpers for protecting an O-ring seal of a fuel injector during the injector's insertion into a socket
US5197435A (en) * 1992-08-13 1993-03-30 Walbro Corporation Molded fuel injection rail
US5297523A (en) * 1993-02-26 1994-03-29 Caterpillar Inc. Tuned actuating fluid inlet manifold for a hydraulically-actuated fuel injection system
US5325834A (en) * 1993-08-03 1994-07-05 Caterpillar Inc. Method of and conversion kit for converting an engine to hydraulically-actuated fuel injection system
US5390638A (en) * 1994-02-25 1995-02-21 Siemens Automotive L.P. Fuel rail assembly
US5513613A (en) * 1994-07-15 1996-05-07 Ford Motor Company Automotive fuel rail end closure device with temperature sensor for returnless fuel system
US5531202A (en) * 1995-07-18 1996-07-02 Siemens Automotive Corporation Fuel rail assembly having internal electrical connectors
DE19640480B4 (de) * 1996-09-30 2004-04-22 Robert Bosch Gmbh Kraftstoffhochdruckspeicher
JP2000265922A (ja) * 1999-03-16 2000-09-26 Honda Motor Co Ltd 燃料噴射装置
US6227170B1 (en) * 1999-09-29 2001-05-08 Kojin, Ltd. Engine fuel rail and method of fabricating same
US6626152B1 (en) * 2000-09-19 2003-09-30 Delphi Technologies, Inc. Fuel rail
US6619264B2 (en) * 2000-10-25 2003-09-16 Siemens Vdo Automotive Inc. Lost core fuel rail with attachment features
DE10261737A1 (de) * 2002-12-30 2004-07-08 Robert Bosch Gmbh Innendruckbelastetes Bauteil, insbesondere für die Kraftstoffeinspritzung für Brennkraftmaschinen mit einer Kraftstoffhochdruckpumpe
US7523741B2 (en) * 2005-03-30 2009-04-28 Kurz - Kasch, Inc. Fuel rail
US7252071B2 (en) * 2005-03-30 2007-08-07 Delaware Capital Formation, Inc. Fuel rail

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2337082A (en) 1998-05-09 1999-11-10 Perkins Engines Co Ltd An i.c engine fuel injection system having a reservoir for actuating fluid

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018224721A1 (fr) * 2017-06-09 2018-12-13 Wärtsilä Finland Oy Élément de distribution de fluide
KR20200006623A (ko) * 2017-06-09 2020-01-20 바르실라 핀랜드 오이 유체 분배 요소
KR102089920B1 (ko) 2017-06-09 2020-03-17 바르실라 핀랜드 오이 유체 분배 요소

Also Published As

Publication number Publication date
CA2639795A1 (fr) 2009-04-16
BRPI0804356A2 (pt) 2009-06-16
US20090095571A1 (en) 2009-04-16
CN101413468A (zh) 2009-04-22
RU2008139792A (ru) 2010-04-20
KR20090038832A (ko) 2009-04-21
MX2008012679A (es) 2009-05-08
EP2050953A3 (fr) 2010-04-21

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