US3908911A - Fuel injection nozzle for internal combustion engines - Google Patents

Fuel injection nozzle for internal combustion engines Download PDF

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Publication number
US3908911A
US3908911A US436783A US43678374A US3908911A US 3908911 A US3908911 A US 3908911A US 436783 A US436783 A US 436783A US 43678374 A US43678374 A US 43678374A US 3908911 A US3908911 A US 3908911A
Authority
US
United States
Prior art keywords
nozzle
snap ring
fuel injection
hollow screw
internal combustion
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.)
Expired - Lifetime
Application number
US436783A
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English (en)
Inventor
Karl Hofmann
Walter Mladek
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Application granted granted Critical
Publication of US3908911A publication Critical patent/US3908911A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors

Definitions

  • ABSTRACT A fuel injection nozzle for internal combustion engines which include a hollow screw for fastening the nozzle to the cylinder head of the engine.
  • the nozzle further includes a nozzle holder into which an annular groove extends from the outer surface thereof.
  • the present invention relates to a fuel injection nozzle for internal combustion engines, and more particularly to a fuel injection nozzle having a hollow screw which bears against a device belonging to the nozzle holder and by means of which the nozzle may be fastened to the cylinder head of the internal combustion engine.
  • the raw material to be used consisting of round rods, have as small a diameter as possible, with the stock removal processes consisting, preferably, of pure turning and drilling operations.
  • the hollow screw for fastening the nozzle is supported on a flange of the nozzle holder which was obtained by'turning down the remainder of the shaft. It is furthermore desired that the developed nozzle holder be suitable not only for fastening by means of a hollow screw but also by means of flange brackets or other fastening members. for example, on a principle of assembly using prefabricated parts.
  • the device is a snap ring which partially and radially engages an annular groove of the nozzle holder.
  • the hollow screw has an internal groove on its side facing the snap ring which covers a portion of the snap ring in its circumferential direction and secures it with respect to radial deflection.
  • the internal groove may be tapered in the direction of the side facing away from the engine, and in this way the snap ring is radially tensioned when the injection nozzle is axially fastened.
  • FIGURE of the drawing illustrates in partial cross section a fuel injection valve including the snap ring device.
  • a fuel injection nozzle 3 is fastened by means of a hollow screw 4.
  • the hollow screw 4 bears on a snap ring 5, which is preferably circular in cross section with approximately one half of its circumferential entent engaging an annular groove 6 of the nozzle holder 7.
  • the hollow screw 4 has an internal groove 8, which covers a portion of the snap ring 5 and which tapers axially so that when the nozzle is axially fastened, the snap ring is radially tensioned at the same time.
  • the holder according to the present invention makes possible an extremely favorable manufacture requiring few steps, it also permits other means for fastening the nozzle, for example, clamps or flanges. In such a case, only the annular groove 6 would additionally be present. Because of the fact that there is no shoulder serving as a support for the hollow screw 4 on the nozzle holder 7, an inserted alignment stud 10 can be maintained short enough so that it lies within the internal screw threads 11 or the cylinder intended to accept the hollow screw 4.
  • a fuel injection nozzle which is fastened to a cylinder head of an internal combustion engine having a nozzle holder and a hollow screw.for fastening the nozzle to the cylinder head, the improvement comprising an annular groove extending into the nozzle holder from the outer surface thereof and a snap ring device which partially and radially engages the annual groove, said snap ring device having a circular cross section, wherein the hollow screw is provided with an internal groove extending into the hollow screw from the inner surface thereof, said internal groove covering a portion of the snap ring in its circumferential direction and securing it with respect to radial deflection, and wherein said internal groove is tapered in the axialdirection of the nozzle facing away from the engine such that the snap ring device is radially tensioned when the nozzle is axially fastened to the cylinder head.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
US436783A 1973-01-25 1974-01-25 Fuel injection nozzle for internal combustion engines Expired - Lifetime US3908911A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2303506A DE2303506A1 (de) 1973-01-25 1973-01-25 Kraftstoffeinspritzduese fuer brennkraftmaschinen

Publications (1)

Publication Number Publication Date
US3908911A true US3908911A (en) 1975-09-30

Family

ID=5869887

Family Applications (1)

Application Number Title Priority Date Filing Date
US436783A Expired - Lifetime US3908911A (en) 1973-01-25 1974-01-25 Fuel injection nozzle for internal combustion engines

Country Status (7)

Country Link
US (1) US3908911A (OSRAM)
JP (2) JPS49109723A (OSRAM)
DE (1) DE2303506A1 (OSRAM)
FR (1) FR2215541B1 (OSRAM)
GB (1) GB1425137A (OSRAM)
IT (1) IT1007008B (OSRAM)
SE (1) SE393440B (OSRAM)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030668A (en) * 1976-06-17 1977-06-21 The Bendix Corporation Electromagnetically operated fuel injection valve
US4057190A (en) * 1976-06-17 1977-11-08 Bendix Corporation Fuel break-up disc for injection valve
US4066213A (en) * 1976-04-16 1978-01-03 Deere & Company Fuel injection nozzle assembly
USD262969S (en) 1979-08-16 1982-02-09 Lucas Industries Limited Fuel injection nozzle
WO1998045595A1 (fr) * 1997-04-10 1998-10-15 Automobiles Peugeot Dispositif de fixation d'un injecteur de carburant sur une culasse de moteur a combustion interne
EP0889232A1 (en) * 1997-07-02 1999-01-07 Lucas Industries Public Limited Company Mounting arrangement
US5996908A (en) * 1996-03-06 1999-12-07 Robert Bosch Gmbh Filter for a fuel injection valve for internal combustion engines
WO2003064849A1 (de) * 2002-01-30 2003-08-07 Siemens Aktiengesellschaft Leckageanschluss zum anbringen einer leckageleitung an einen kraftstoffinjektor
US20180010564A1 (en) * 2015-01-30 2018-01-11 Hitachi Automotive Systems, Ltd. Fuel injection valve

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3402968A1 (de) * 1984-01-28 1985-08-01 Klöckner-Humboldt-Deutz AG, 5000 Köln Luftverdichtende brennkraftmaschine
DE3908796A1 (de) * 1988-06-06 1989-12-14 Bosch Gmbh Robert Kraftstoff-einspritzduese fuer brennkraftmaschinen
DE3839635A1 (de) * 1988-11-24 1990-05-31 Bosch Gmbh Robert Kraftstoff-einspritzduese fuer brennkraftmaschinen
DE19508305A1 (de) * 1995-03-09 1996-09-12 Bayerische Motoren Werke Ag Vorrichtung zur Halterung einer Einspritzdüse an einem Maschinenteil, insbesondere im/am Zylinderkopf einer Brennkraftmaschine
DE19511703A1 (de) * 1995-03-30 1996-10-02 Bayerische Motoren Werke Ag Vorrichtung zur Befestigung einer Einspritzdüse insbesondere am Zylinderkopf einer Brennkraftmaschine
DE19941054A1 (de) * 1999-08-28 2001-03-01 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE10108201A1 (de) 2001-02-21 2002-08-22 Bosch Gmbh Robert Spannbaugruppe
DE102008003129A1 (de) * 2008-01-02 2009-07-09 Deutz Ag Zylinderkopf für eine Brennkraftmaschine mit Leckkraftstoffrücklauf

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1057763A (en) * 1911-10-30 1913-04-01 Mueller Mfg Co H Method of coupling telescopic pipes.
US1925937A (en) * 1930-12-09 1933-09-05 Samuel W Goldman Pipe coupling
US2008803A (en) * 1932-04-18 1935-07-23 Stephan Engineering Corp Fuel atomizing and igniting means
US2137391A (en) * 1937-01-09 1938-11-22 Wright Aeronautical Corp Cylinder attachment
US2552679A (en) * 1947-11-05 1951-05-15 American Bosch Corp Cooled injection nozzle
US2674470A (en) * 1950-09-29 1954-04-06 Arthur I Appleton Electrical connector and method of making same
US3439876A (en) * 1966-06-06 1969-04-22 Murphy Diesel Co Check valve assembly for engine fuel injectors
US3733093A (en) * 1971-03-10 1973-05-15 G Seiler Pull and push safety device for screw socket connections of pipes

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB447237A (en) * 1934-10-11 1936-05-14 Bosch Robert Improvements in or relating to fuel injection nozzles for internal combustion engines

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1057763A (en) * 1911-10-30 1913-04-01 Mueller Mfg Co H Method of coupling telescopic pipes.
US1925937A (en) * 1930-12-09 1933-09-05 Samuel W Goldman Pipe coupling
US2008803A (en) * 1932-04-18 1935-07-23 Stephan Engineering Corp Fuel atomizing and igniting means
US2137391A (en) * 1937-01-09 1938-11-22 Wright Aeronautical Corp Cylinder attachment
US2552679A (en) * 1947-11-05 1951-05-15 American Bosch Corp Cooled injection nozzle
US2674470A (en) * 1950-09-29 1954-04-06 Arthur I Appleton Electrical connector and method of making same
US3439876A (en) * 1966-06-06 1969-04-22 Murphy Diesel Co Check valve assembly for engine fuel injectors
US3733093A (en) * 1971-03-10 1973-05-15 G Seiler Pull and push safety device for screw socket connections of pipes

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4066213A (en) * 1976-04-16 1978-01-03 Deere & Company Fuel injection nozzle assembly
US4057190A (en) * 1976-06-17 1977-11-08 Bendix Corporation Fuel break-up disc for injection valve
US4030668A (en) * 1976-06-17 1977-06-21 The Bendix Corporation Electromagnetically operated fuel injection valve
USD262969S (en) 1979-08-16 1982-02-09 Lucas Industries Limited Fuel injection nozzle
US5996908A (en) * 1996-03-06 1999-12-07 Robert Bosch Gmbh Filter for a fuel injection valve for internal combustion engines
WO1998045595A1 (fr) * 1997-04-10 1998-10-15 Automobiles Peugeot Dispositif de fixation d'un injecteur de carburant sur une culasse de moteur a combustion interne
FR2762051A1 (fr) * 1997-04-10 1998-10-16 Peugeot Dispositif de fixation d'un injecteur de carburant sur une culasse de moteur a combustion interne
EP0889232A1 (en) * 1997-07-02 1999-01-07 Lucas Industries Public Limited Company Mounting arrangement
US6019088A (en) * 1997-07-02 2000-02-01 Lucas Industries Mounting arrangement
WO2003064849A1 (de) * 2002-01-30 2003-08-07 Siemens Aktiengesellschaft Leckageanschluss zum anbringen einer leckageleitung an einen kraftstoffinjektor
US20050001426A1 (en) * 2002-01-30 2005-01-06 Jurgen Dick Leakage connection for connecting a leakage pipe to a fuel injector
US20180010564A1 (en) * 2015-01-30 2018-01-11 Hitachi Automotive Systems, Ltd. Fuel injection valve
US10415527B2 (en) * 2015-01-30 2019-09-17 Hitachi Automotive Systems, Ltd. Fuel injection valve

Also Published As

Publication number Publication date
IT1007008B (it) 1976-10-30
GB1425137A (en) 1976-02-18
SE393440B (sv) 1977-05-09
DE2303506A1 (de) 1974-08-01
JPS6129971Y2 (OSRAM) 1986-09-03
FR2215541B1 (OSRAM) 1976-10-08
JPS49109723A (OSRAM) 1974-10-18
FR2215541A1 (OSRAM) 1974-08-23
JPS5890368U (ja) 1983-06-18

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