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

Fuel injection nozzle for internal combustion engines Download PDF

Info

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
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

Links

Images

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.

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. There is also provided a snap ring device which partially and radially engages the annular groove.

Description

United States Patent Hofmann et al.
[451 Sept. 30, 1975 FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES [75] Inventors: Karl Hofmann, Aldingen; Walter Mladek, Stuttgart, both of Germany [73] Assignee: Robert Bosch G.m.b.H., Stuttgart,
Germany [22] Filed: Jan. 25, 1974 [21] Appl. N0.: 436.783
[30] Foreign Application Priority Data Jan. 25, I973 Germany 2303506 [52] U.S. Cl. 239/533 [51] Int. Cl.-' F02M 61/04 [58] Field of Search 239/533; 285/393, 415,
[561 References Cited UNITED STATES PATENTS l.()57.763 4/1913 Mueller ct al. 285/415 X l 925,937 9/1933 Schultis 285/356 X Primary E.\'aminerM. Henson Wood, Jr. Assistant E.\'aminerAndres Kashnikow Attorney, Agent, or Firm--Edwin E. Greigg [57] 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. There is also provided a snap ring device which partially and radially engages the annular groove.
1 Claim, 1 Drawing Figure U.S. Patent Sept. 30,1975 3,908,911
FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES BACKGROUND OF THE INVENTION 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.
Because of the fact that the individual parts of a fuel injection nozzle. especially of a nozzle holder, are subjected during manufacture to stock removal processes, it is desired that 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.
In a known fuel injection nozzle of this type, 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.
OBJECTS AND SUMMARY OF THE INVENTION It is, therefore, an object of the present invention to provide a fuel injection nozzle which accomplishes the above desired purposes.
This and other objects are attained according to the present invention in that the device is a snap ring which partially and radially engages an annular groove of the nozzle holder.
According to a special advantageous embodiment of the present invention, 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. Preferably 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.
BRIEF DESCRIPTION OF THE DRAWING An exemplary embodiment of the object of the present invention is shown in the sole FIGURE of the drawing which illustrates in partial cross section a fuel injection valve including the snap ring device.
DESCRIPTION OF THE PREFERRED EMBODIMENT In the bore 1 of the cylinder head 2 of an internal combustion engine, 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.
Aside from the fact that 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.
What is claimed is:
1. In 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.
l= l l

Claims (1)

1. In 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 axial direction 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.
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 (en) 1973-01-25 1973-01-25 FUEL INJECTION NOZZLE FOR COMBUSTION MACHINES

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 (en)
JP (2) JPS49109723A (en)
DE (1) DE2303506A1 (en)
FR (1) FR2215541B1 (en)
GB (1) GB1425137A (en)
IT (1) IT1007008B (en)
SE (1) SE393440B (en)

Cited By (8)

* 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
WO1998045595A1 (en) * 1997-04-10 1998-10-15 Automobiles Peugeot Device for fixing a fuel injector on an internal combustion engine cylinder head
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 (en) * 2002-01-30 2003-08-07 Siemens Aktiengesellschaft 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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3402968A1 (en) * 1984-01-28 1985-08-01 Klöckner-Humboldt-Deutz AG, 5000 Köln Air-compressing internal combustion engine
DE3908796A1 (en) * 1988-06-06 1989-12-14 Bosch Gmbh Robert FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES
DE3839635A1 (en) * 1988-11-24 1990-05-31 Bosch Gmbh Robert FUEL INJECTION NOZZLE FOR INTERNAL COMBUSTION ENGINES
DE19508305A1 (en) * 1995-03-09 1996-09-12 Bayerische Motoren Werke Ag Injector-nozzle holder in cylinder head
DE19511703A1 (en) * 1995-03-30 1996-10-02 Bayerische Motoren Werke Ag Device for fastening an injection nozzle, in particular to the cylinder head of an internal combustion engine
DE19941054A1 (en) * 1999-08-28 2001-03-01 Bosch Gmbh Robert Fuel injection valve for internal combustion engines
DE10108201A1 (en) * 2001-02-21 2002-08-22 Bosch Gmbh Robert tension assembly
DE102008003129A1 (en) * 2008-01-02 2009-07-09 Deutz Ag Reciprocating piston combustion engine for use in e.g. tunnel work machine at salt mine, has flume attached between sealing seat and seal of injection nozzle retainer in cylinder head at step opening

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 (12)

* 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
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
US5996908A (en) * 1996-03-06 1999-12-07 Robert Bosch Gmbh Filter for a fuel injection valve for internal combustion engines
WO1998045595A1 (en) * 1997-04-10 1998-10-15 Automobiles Peugeot Device for fixing a fuel injector on an internal combustion engine cylinder head
FR2762051A1 (en) * 1997-04-10 1998-10-16 Peugeot DEVICE FOR FIXING A FUEL INJECTOR TO A CYLINDER HEAD OF AN INTERNAL COMBUSTION ENGINE
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 (en) * 2002-01-30 2003-08-07 Siemens Aktiengesellschaft Leakage connection for connecting a leakage pipe to a fuel injector
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 (en) 1976-10-30
JPS49109723A (en) 1974-10-18
GB1425137A (en) 1976-02-18
FR2215541A1 (en) 1974-08-23
SE393440B (en) 1977-05-09
DE2303506A1 (en) 1974-08-01
JPS5890368U (en) 1983-06-18
JPS6129971Y2 (en) 1986-09-03
FR2215541B1 (en) 1976-10-08

Similar Documents

Publication Publication Date Title
US3908911A (en) Fuel injection nozzle for internal combustion engines
US4012154A (en) Threadless locking device
CA1067772A (en) Fuel injection nozzle assembly
GB2030649A (en) Heat insulator sleeve for a fuel injection nozzle of an internal combustion engine
JPS6419169A (en) Fuel injection nozzle assembly and assembling thereof
GB1530374A (en) Filter for liquids
GB980350A (en) Anchor fastener for use with sandwich type panels
IE34855L (en) Self-retained bolt assembly
EP0197449A3 (en) Multipart piston for an internal-combustion engine
ES8406683A1 (en) Cylinder head locking construction
US4004499A (en) Bolt-on piston assembly
US4941764A (en) Arrangement for fastening a brake booster
US4346846A (en) Fuel injection nozzle
GB909059A (en) Bearing cap fastening for a piston engine
US4096998A (en) Fuel injector
GB871405A (en) A new or improved locking ring, lock nut or like member
GB1480854A (en) Nuclear reactor diagrid
US4618097A (en) Fuel injection nozzle for internal combustion engines
GB1215111A (en) Improvements in or relating to internal combustion engines
FR2331691A2 (en) Securing cap for carburettor slow running screw - has weakened section to ensure rupture on removal of cap
JPH0683956U (en) Fuel injection device for each cylinder of a diesel engine
GB1316552A (en) Ignition distributors
SU1071369A1 (en) Spindle unit
GB447237A (en) Improvements in or relating to fuel injection nozzles for internal combustion engines
SU1057710A2 (en) Connecting rod