WO1984001980A1 - Fuel injection valve - Google Patents

Fuel injection valve Download PDF

Info

Publication number
WO1984001980A1
WO1984001980A1 PCT/GB1983/000275 GB8300275W WO8401980A1 WO 1984001980 A1 WO1984001980 A1 WO 1984001980A1 GB 8300275 W GB8300275 W GB 8300275W WO 8401980 A1 WO8401980 A1 WO 8401980A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
needle member
valve
valve seat
orifice
Prior art date
Application number
PCT/GB1983/000275
Other languages
French (fr)
Inventor
David Michael Bacon
Richard Tunaley Shaw
Original Assignee
Perkins Engines Group
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 Perkins Engines Group filed Critical Perkins Engines Group
Publication of WO1984001980A1 publication Critical patent/WO1984001980A1/en

Links

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
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
    • 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
    • F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
    • F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
    • 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
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • This invention relates to a fuel injection valve for a diesel engine.
  • Conventional diesel injectors incorporate a needle valve formed by the conical tip of a needle member that co ⁇ operates with a frusto-conical valve seat to control the flow of fuel.
  • Fuel is supplied to an annular chamber surrounding the needle member adjacent its tip so that a pressure impulse in the fuel supply serves to move the needle member axially and separate the needle tip from the valve seat.
  • Fuel then flows directly from said annular chamber through the central orifice of the valve seat.
  • the spray orifice is aligned axially with the needle member and valve seat, but in a multi-spray injector a plurality of spray orifices are formed in a nozzle with the outlet side of the valve- seat. Multi-spray injectors are preferred where it is desired to disperse the injected fuel in the combustion system.
  • An object of the present invention is to provide an improved fuel injection valve, in particular a valve that will produce a spray in the form of a swirling cone of fuel.
  • a fuel injection valve for a diesel engine comprises a fuel delivery nozzle body formed with a central bore, a fuel spray orifice co-axial with said bore, a frusto-conical valve seat co-axial with and tapering inwards towards said orifice, and a fuel supply passage that supplies fuel to said valve seat and orifice, and a needle member that is slidably received in said bore and has a cyl ⁇ indrical end portion of reduced diameter terminating in a conical tip that co-operates with said valve seat to open and close said orifice; characterised in that said nozzle body is formed with a chamber that communicates with said fuel supply passage and into which a shoulder portion of the needle member projects so that pressurisation of the fuel moves the needle member axially to disengage its conical end from the valve seat, and in that the nozzle body is formed with a plurality of fuel supply passages that extend tangen- tially of, and open into, a cylindrical portion of said central bore adjacent to the wider
  • the opening of the spool valve occurs progressively thereby exercising control over the flow of fuel to the valve seat.
  • the axial spacing of said openings of the fuel supply passages in relation to the valve seat can be varied to produce a delay in the two open ⁇ ing actions.
  • Figure 1 is an axial section through an injection valve according to a first embodiment of the invention
  • Figure 3 is a section in the plane 3-3 of Figure 1
  • Figure 4 is an enlarged view of the end of the injector nozzle in Figure 1 with the needle member lifted off the seat
  • Figure 5 is a part axial section through an injection valve according to a second embodiment of the invention.
  • Figure 6 is an axial section through an injection valve according to a third embodiment of the invention.
  • Figure 7 is a section in the plane 7-7 in Figure 6, and
  • Figure 8 is a transverse vertical section through the cyl ⁇ inder of a diesel engine fitted with an injector incorporating an injection valve according to the invention.
  • Figure 8 shows a fuel -injector 1 mounted in the head 2 of a diesel engine so as to inject a spray of fuel into a com ⁇ bustion chamber defined by the underside of the head, the cylinder 3 in the blo 4 and the crown of the piston 5.
  • a bracket 6 and stud 7 clamp the injector down in a bore 8 in the head, and a fuel pipe 9 supplies fuel to the top of the injector.
  • the injector comprises a body 10 to which the fuel pipe 9 is connected at its upper end, and which is adapted to supply fuel through an internal passage 11 (see Figure 1) to a nozzle assembly 12 connected to the lower end of the body by a cap nut 13.
  • the injector body 10 and the means for mounting it in the head may be of known design, but the nozzle assembly 12 is specially adapted according to the invention, as shown in Figures 1 to 1 , so as to produce an injected fuel spray in the form of a cone.
  • the nozzle assembly 12 comprises a nozzle body 14 and a needle member 15 that is smoothly slidably within a central cylindrical bore 16 of the body 14.
  • the lower portion 17 of the needle member is of reduced diameter and terminates in a conical nose 18. This portion 17 extends through a corre ⁇ sponding bore 19 at the lower end of the body 14, and the nose 18 of the needle member co-operates with a frusto- conical seat 20 at the lower end of bore 19 surrounding a fuel injection hole 21.
  • a compression spring 22 is mounted on a spigot 23 at the upper end of the needle member 15 and acts between the injector body 10 and the needle member 15 to urge the latter- downwards and engage the nose 18 with the seat 20, thereby closing the fuel injection hole 21 and forming a liquid and air-tight seal.
  • the upper surface of the nozzle body 14 is formed with an annular fuel gallery 24 that communicates with the fuel passage 11 in the injector body, and four equi-anularly spaced fuel passages 25 extend downwards from the gallery 24 to the lower end of the nozzle body.
  • An opening 26 is formed between one of these passages 25 and the lower end 16' of the central bore 16 so that pressurisation of the fuel will be effective within the lower end of bore 16 to act upon the shoulder portion 15 ' of the needle member and lift the latter against the bias of spring 22.
  • each passage 25 communicates with an in ⁇ wardly extending pasage 27 that opens into the bore 19 ad ⁇ jacent the top of the seat 20.
  • These four passages 27 are directed tangentially of the bore 19 and seat 20 so as to direct fuel in a common sense of rotation about the central longitudinal axis of the injector, as shown in Figure 3.
  • the lower reduced diameter portion 17 of the needle member immediately adjacent the nose 18 constitutes a land 28 which obstructs the tangential passages 27 to a varying degree during movement of the needle member 15.
  • the choice of the size of the fuel passages, their number and disposition may be such as to control the pressure and volume of fuel flowing between the nose 18 and the seat 20 for a given separation between the nose and the seat, there ⁇ by enabling the choice of cone angle to be made independent ⁇ ly of these parameters.
  • the passages 27 may, instead of lying in a plane perpendicul r to the needle axis, lie on a frusto-conical surface so that they are directed inwards and downwards at and angle O.
  • the nozzle body 14 shown in Figures 1 to 5 is formed as a one-piece body, with the fuel passages 25, 26 and 27 being bored therein, and with the outer portions of those bore ⁇ holes for passages 26 and 27 being plugged at 30.
  • the nozzle body 14 may be formed as an assembly comprising an inner cylindrical portion 31 received as a close fit within an outer sleeve portion 32, grooves being formed in the outer surface of the inner portion 31 to be closed by the inner surfaces of the sleeve portion 32 and thereby form the passages 25 and 27.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

A fuel injection valve for a diesel engine comprises a fuel delivery nozzle body (14) formed with a central bore (16), a fuel spray orifice (21) co-axial with said bore (16), a frusto-conical valve seat (20) co-axial with, and tapering inwards towards said orifice (20), and a fuel supply passage (25) that suplies fuel to said valve seat (20) an orifice (21); and a needle member (15) that is slidably received in said bore (16) and has a cylindrical end portion (17) of reduced diameter terminating in a conical tip (18) that co-operates with said valve set (20) to open and close said orifice (21); characterised in that said nozzle body (14) is formed with a chamber (16') that communicates with said fuel supply passage (25) and into which a shoulder portion (15') of the needle member (15) projects so that pressurisation of the fuel moves the needle member (15) axially to disengage its conical end from the valve seat (20), and in that the nozzle body (14) is formed with a plurality of fuel supply passages (27) that extend tangentially of, and open into, a cylindrical portion (19) of said central bore (16) adjacent to the wider end of the valve seat (20) and in which said cylindrical end portion (17) of the needle member (15) slides to open said passages (27) as the needle member (15) moves axially to disengage the valve seat (20).

Description

Fuel injection valve
Technical Field
This invention relates to a fuel injection valve for a diesel engine.
Conventional diesel injectors incorporate a needle valve formed by the conical tip of a needle member that co¬ operates with a frusto-conical valve seat to control the flow of fuel. Fuel is supplied to an annular chamber surrounding the needle member adjacent its tip so that a pressure impulse in the fuel supply serves to move the needle member axially and separate the needle tip from the valve seat. Fuel then flows directly from said annular chamber through the central orifice of the valve seat. In a single spray injector, the spray orifice is aligned axially with the needle member and valve seat, but in a multi-spray injector a plurality of spray orifices are formed in a nozzle with the outlet side of the valve- seat. Multi-spray injectors are preferred where it is desired to disperse the injected fuel in the combustion system.
Disclosure of the Invention
An object of the present invention is to provide an improved fuel injection valve, in particular a valve that will produce a spray in the form of a swirling cone of fuel.
According to the invention, a fuel injection valve for a diesel engine comprises a fuel delivery nozzle body formed with a central bore, a fuel spray orifice co-axial with said bore, a frusto-conical valve seat co-axial with and tapering inwards towards said orifice, and a fuel supply passage that supplies fuel to said valve seat and orifice, and a needle member that is slidably received in said bore and has a cyl¬ indrical end portion of reduced diameter terminating in a conical tip that co-operates with said valve seat to open and close said orifice; characterised in that said nozzle body is formed with a chamber that communicates with said fuel supply passage and into which a shoulder portion of the needle member projects so that pressurisation of the fuel moves the needle member axially to disengage its conical end from the valve seat, and in that the nozzle body is formed with a plurality of fuel supply passages that extend tangen- tially of, and open into, a cylindrical portion of said central bore adjacent to the wider end of the valve seat and in which said cylindrical end portion of the needle member slides to open said passages as the needle member moves axially to disengage the valve seat.
The cylindrical end portion of the needle member together with the fuel supply p srages opening into the cylindrical portion of the central bore, constitutes a spool valve which controls opening of these passages independently o , though in a manner related to, the opening of the valve .seat as the needle member is moved axially. The opening of the spool valve occurs progressively thereby exercising control over the flow of fuel to the valve seat. The axial spacing of said openings of the fuel supply passages in relation to the valve seat can be varied to produce a delay in the two open¬ ing actions.
The invention will now be described by way of example with reference to the accompanying drawings in which
Figure 1 is an axial section through an injection valve according to a first embodiment of the invention,
O PI Figure 2 is a section in the plane 2-2 of Figure 1,
Figure 3 is a section in the plane 3-3 of Figure 1,
Figure 4 is an enlarged view of the end of the injector nozzle in Figure 1 with the needle member lifted off the seat,
Figure 5 is a part axial section through an injection valve according to a second embodiment of the invention,
Figure 6 is an axial section through an injection valve according to a third embodiment of the invention.
Figure 7 is a section in the plane 7-7 in Figure 6, and
Figure 8 is a transverse vertical section through the cyl¬ inder of a diesel engine fitted with an injector incorporating an injection valve according to the invention.
Figure 8 shows a fuel -injector 1 mounted in the head 2 of a diesel engine so as to inject a spray of fuel into a com¬ bustion chamber defined by the underside of the head, the cylinder 3 in the blo 4 and the crown of the piston 5. A bracket 6 and stud 7 clamp the injector down in a bore 8 in the head, and a fuel pipe 9 supplies fuel to the top of the injector.
The injector comprises a body 10 to which the fuel pipe 9 is connected at its upper end, and which is adapted to supply fuel through an internal passage 11 (see Figure 1) to a nozzle assembly 12 connected to the lower end of the body by a cap nut 13. The injector body 10 and the means for mounting it in the head may be of known design, but the nozzle assembly 12 is specially adapted according to the invention, as shown in Figures 1 to 1 , so as to produce an injected fuel spray in the form of a cone.
The nozzle assembly 12 comprises a nozzle body 14 and a needle member 15 that is smoothly slidably within a central cylindrical bore 16 of the body 14. The lower portion 17 of the needle member is of reduced diameter and terminates in a conical nose 18. This portion 17 extends through a corre¬ sponding bore 19 at the lower end of the body 14, and the nose 18 of the needle member co-operates with a frusto- conical seat 20 at the lower end of bore 19 surrounding a fuel injection hole 21. A compression spring 22 is mounted on a spigot 23 at the upper end of the needle member 15 and acts between the injector body 10 and the needle member 15 to urge the latter- downwards and engage the nose 18 with the seat 20, thereby closing the fuel injection hole 21 and forming a liquid and air-tight seal.
The upper surface of the nozzle body 14 is formed with an annular fuel gallery 24 that communicates with the fuel passage 11 in the injector body, and four equi-anularly spaced fuel passages 25 extend downwards from the gallery 24 to the lower end of the nozzle body. An opening 26 is formed between one of these passages 25 and the lower end 16' of the central bore 16 so that pressurisation of the fuel will be effective within the lower end of bore 16 to act upon the shoulder portion 15 ' of the needle member and lift the latter against the bias of spring 22.
The lower end of each passage 25 communicates with an in¬ wardly extending pasage 27 that opens into the bore 19 ad¬ jacent the top of the seat 20. These four passages 27 are directed tangentially of the bore 19 and seat 20 so as to direct fuel in a common sense of rotation about the central longitudinal axis of the injector, as shown in Figure 3. The lower reduced diameter portion 17 of the needle member immediately adjacent the nose 18 constitutes a land 28 which obstructs the tangential passages 27 to a varying degree during movement of the needle member 15.
In operation, high .pressure impulses of fuel are supplied to the injector from an injection pump. On receiving a high pressure impulse through passages 11 and 25, the lower end 16' of the central bore is pressurised and the needle member is lifted against the bias of spring 22 to a degree depend¬ ing on the intensity of and duration of the pressure impulse. Lifting of the needle member 15 results in separa¬ tion of the conical nose 18 and the seat 20 thereby opening the hole 21. Lifting of the needle member 15 also causes the land 28 to open the tangential passages 27 and fuel flows between the nose and seat in a rotary manner which produces a conical hollow spray shown as 29 in Figure 8. There is therefore a -dual action of lifting the needle member to open the hole 21 and opening the tangential passages 27 to allow the flow of fuel. The axial position of the opening of passages 27 relative to the frusto-conical seat 20, will determine the delay between lifting of the needle member and the flow of fuel to produce the spray.
The choice of the size of the fuel passages, their number and disposition may be such as to control the pressure and volume of fuel flowing between the nose 18 and the seat 20 for a given separation between the nose and the seat, there¬ by enabling the choice of cone angle to be made independent¬ ly of these parameters. In an alternative embodiment of the invention, as shown in Figure 5, the passages 27 may, instead of lying in a plane perpendicul r to the needle axis, lie on a frusto-conical surface so that they are directed inwards and downwards at and angle O.
The nozzle body 14 shown in Figures 1 to 5, is formed as a one-piece body, with the fuel passages 25, 26 and 27 being bored therein, and with the outer portions of those bore¬ holes for passages 26 and 27 being plugged at 30. However, in an alternative embodiment, shown in Figures 6 and 7, the nozzle body 14 may be formed as an assembly comprising an inner cylindrical portion 31 received as a close fit within an outer sleeve portion 32, grooves being formed in the outer surface of the inner portion 31 to be closed by the inner surfaces of the sleeve portion 32 and thereby form the passages 25 and 27.
.-•*.

Claims

Claims
A fuel injection valve for a diesel engine comprising a fuel delivery nozzle body formed with a central bore, a - fuel spray orifice co-axial with said bore, a frusto- conical valve seat co-axial with and tapering inwards towards said orifice, and a fuel supply passage that supplies fuel to said valve seat and orifice, and a needle member that is slidably received in said bore and has a cylindrical end portion of reduced diameter term¬ inating in a conical tip that co-operates with said valve seat to open and close said orifice; characterised in that said nozzle body (14) is formed with a chamber (16') that communicates with said fuel supply passage (25) and into which a shoulder portion (15') of the needle member (15) projects so that pressurisation of the fuel moves the needle member (15) axially to dis¬ engage its conical end (18) from the valve seat (20), and in that the nozzle body (14) is formed with a plur¬ ality of fuel supply passages (27) that extend tangent- ially of, and open into, a cylindrical portion (19) of said central bore (16) adjacent to the wider end of the valve seat (20) and in which said cylindrical end portion (17) of the needle member (15) slides to open said passages (27) as the needle member moves (15) axially to disengage the valve seat (20) .
A valve as claimed in claim 1 in which the needle member
(15) comprises a main cylindrical body portion joined by said shoulder portion (15') to said cylindrical end portion (17) of reduced diameter, and said central bore
(16) comprises a main cylindrical portion in which said main body portion is slidably received and through which part of said cylindrical end portion (17) of the needle member (15) extends so as to define said chamber (16*)
Q--TPI as an annulus extending axially between said shoulder portion (15') of the :needle member and the junction of the main cylindrical portion of the central bore (16) with said cylindrical portion (19) in which the cylind¬ rical end portion (17) of the needle member slides.
3. A valve as claimed in claim 1 or 2 in which said tang¬ ential fuel supply passages (27) lie in a common plane perpendicular to the axis of the needle member (15).
4. A valve as claimed in claim 1 or 2 in which said tan¬ gential fuel supply passages (27) lie are directed radially inwards and axially towards said orifice (21).
5. A valve as claimed in any one of the preceding claims in which the openings of said tangential fuel supply passages (27) into said cylindrical portion (19) of the central bore are equi-angularly spaced about said cyl¬ indrical portion.
6. A valve as claimed in any one of the preceding claims in which the nozzle ody (14) is an assembly comprising an inner core (31) and an outer sleeve (32) with said tan¬ gential fuel supply passages (27) formed as grooves on the outer surface of said inner core (31).
7. A fuel injector for a diesel engine comprising an injector body (10) and a valve as claimed in any one of the preceding claims.
PCT/GB1983/000275 1982-11-12 1983-10-28 Fuel injection valve WO1984001980A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8232397 1982-11-12

Publications (1)

Publication Number Publication Date
WO1984001980A1 true WO1984001980A1 (en) 1984-05-24

Family

ID=10534229

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1983/000275 WO1984001980A1 (en) 1982-11-12 1983-10-28 Fuel injection valve

Country Status (6)

Country Link
EP (1) EP0137788A1 (en)
JP (1) JPS59502032A (en)
CA (1) CA1199242A (en)
GB (1) GB2131875B (en)
IT (1) IT1209489B (en)
WO (1) WO1984001980A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997049911A1 (en) * 1996-06-22 1997-12-31 Robert Bosch Gmbh Injection valve, in particular for directly injecting fuel into the combustion chamber of an internal combustion engine
WO2023133034A1 (en) * 2022-01-05 2023-07-13 Cummins Inc. Fuel injector, needle seal, and fuel injector system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1181954B (en) * 1984-03-28 1987-09-30 Daimler Benz Ag INJECTOR NOZZLE FOR INTERNAL COMBUSTION ENGINES WITH AIR COMPRESSION INFECTION
DE3502642A1 (en) * 1985-01-26 1986-07-31 Daimler-Benz Ag, 7000 Stuttgart FUEL INJECTION VALVE FOR AN AIR-COMPRESSING INJECTION COMBUSTION ENGINE
FR2726861B1 (en) * 1994-11-11 1999-03-26 Volkswagen Ag INJECTOR FOR AN INTERNAL COMBUSTION ENGINE WITH RECIPROCATING PISTON
JP2014020339A (en) * 2012-07-23 2014-02-03 Okayama Univ Fuel injection nozzle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE839743C (en) * 1952-04-10 Stuttgarter Motorzubehör G.m.b. H., Stuttgart-Zuffenhausen Flat needle nozzle for pre-injection
DE837619C (en) * 1943-07-24 1952-04-28 Bosch Gmbh Robert Injection nozzle for internal combustion engines
CH305821A (en) * 1950-11-13 1955-03-15 L Orange Rudolf Needle injectors for internal combustion engines.
FR1355415A (en) * 1963-05-09 1964-03-13 Ricardo & Co Engineers Fuel injection device for internal combustion engine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB296747A (en) * 1926-01-14 1928-09-07 Zh Rikagaku Kenkyujo Method of and apparatus for injecting oil into internal combustion engines
GB551912A (en) * 1941-03-12 1943-03-15 Scintilla Ltd Fuel injector for internal combustion engines
GB2050504A (en) * 1979-04-24 1981-01-07 Mikuni Kogyo Kk Electromagnetic Fuel Injector for an Internal Combustion Engine Carburation System

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE839743C (en) * 1952-04-10 Stuttgarter Motorzubehör G.m.b. H., Stuttgart-Zuffenhausen Flat needle nozzle for pre-injection
DE837619C (en) * 1943-07-24 1952-04-28 Bosch Gmbh Robert Injection nozzle for internal combustion engines
CH305821A (en) * 1950-11-13 1955-03-15 L Orange Rudolf Needle injectors for internal combustion engines.
FR1355415A (en) * 1963-05-09 1964-03-13 Ricardo & Co Engineers Fuel injection device for internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997049911A1 (en) * 1996-06-22 1997-12-31 Robert Bosch Gmbh Injection valve, in particular for directly injecting fuel into the combustion chamber of an internal combustion engine
WO2023133034A1 (en) * 2022-01-05 2023-07-13 Cummins Inc. Fuel injector, needle seal, and fuel injector system

Also Published As

Publication number Publication date
EP0137788A1 (en) 1985-04-24
IT1209489B (en) 1989-08-30
GB2131875A (en) 1984-06-27
IT8323685A0 (en) 1983-11-11
CA1199242A (en) 1986-01-14
GB2131875B (en) 1985-10-23
GB8328715D0 (en) 1983-11-30
JPS59502032A (en) 1984-12-06

Similar Documents

Publication Publication Date Title
CA1275879C (en) Dual spray cone electromagnetic fuel injector
US5020728A (en) Fuel injection nozzle for internal combustion engines
KR100287309B1 (en) Fuel Injection Nozzle for Internal Combustion Engines
US6189817B1 (en) Fuel injector
US4006719A (en) Vortex action fuel injection valve for internal combustion engine
US4096995A (en) Variable spray direction fuel injection nozzle
KR20010015858A (en) Flat needle for pressurized swirl fuel injector
EP0311266B1 (en) Damped opening poppet covered orifice fuel injection nozzle
CN1093226C (en) Fuel injection device
CN101529080B (en) Injector for injecting fuel into combustion chambers of internal combustion engines
US20040011894A1 (en) Fuel injecton valve
DE2038646A1 (en) Electromagnetically actuated injection valve for manifold injection systems
EP2011993B1 (en) Dual spray injection nozzle
WO1984001980A1 (en) Fuel injection valve
USRE33841E (en) Dual spray cone electromagnetic fuel injector
GB2296041A (en) I.c.engine fuel injector
US6918549B2 (en) Fuel injector tip for control of fuel delivery
KR950702007A (en) Fuel injection nozzle for internal combustion engines
US6427666B1 (en) Fuel injection valve
EP1033488B1 (en) Fuel injector
JP4075511B2 (en) Fuel injection device for internal combustion engine
US20030116653A1 (en) Fuel injector tip
US6131828A (en) Fuel injector
JP3849224B2 (en) Fuel injection valve
JPH06241147A (en) Fuel feeding device for internal combustion engine

Legal Events

Date Code Title Description
AK Designated states

Designated state(s): JP US

AL Designated countries for regional patents

Designated state(s): DE FR GB SE

WWE Wipo information: entry into national phase

Ref document number: 1983903396

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1983903396

Country of ref document: EP

WWR Wipo information: refused in national office

Ref document number: 1983903396

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1983903396

Country of ref document: EP