EP0625634A1 - Gerät zum Warten von Kraftstoffeinspritzventilen - Google Patents

Gerät zum Warten von Kraftstoffeinspritzventilen Download PDF

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Publication number
EP0625634A1
EP0625634A1 EP94303242A EP94303242A EP0625634A1 EP 0625634 A1 EP0625634 A1 EP 0625634A1 EP 94303242 A EP94303242 A EP 94303242A EP 94303242 A EP94303242 A EP 94303242A EP 0625634 A1 EP0625634 A1 EP 0625634A1
Authority
EP
European Patent Office
Prior art keywords
apertures
mounting element
adapter
injector
adapter element
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Withdrawn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
EP94303242A
Other languages
English (en)
French (fr)
Inventor
Philip Edward Ryan
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.)
CELTIN Pty Ltd
Original Assignee
CELTIN Pty Ltd
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 CELTIN Pty Ltd filed Critical CELTIN Pty Ltd
Publication of EP0625634A1 publication Critical patent/EP0625634A1/de
Withdrawn legal-status Critical Current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
    • F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines

Definitions

  • This invention relates to an apparatus for servicing fuel injectors, and particularly, though not exclusively, for servicing electrically operated side feed fuel injectors.
  • top feed injectors where the fuel was fed to the injector from its top, was sprayed from the bottom, and control signal lines were connected to one side.
  • side feed injectors have been introduced where the fuel is fed into the injector through an annular filter in its side, is sprayed from the bottom, and the control signal lines are connected to the top.
  • Such side feed injectors are available as single point injectors, known as Throttle Body Injectors (TBI), or, more commonly, multi point injectors.
  • TBI Throttle Body Injectors
  • the advantage of the side feed injectors over the top feed injectors is that the fuel enters the injector over a far greater area than with the top feed injectors so that better filtering is achieved and the fuel can be sprayed out faster and under greater pressure. Furthermore, since there is a greater volume of the injector within the fuel, it is kept cooler by the fuel than the top feed injectors.
  • top feed injectors are known, for example from US Patent No. 4,845,979, such devices are not suitable for servicing side feed injectors.
  • the invention provides apparatus for servicing one or more fuel injectors each having a fuel inlet, a spray outlet, and electrically operable valve means operable to permit liquid to flow from the fuel inlet to the spray outlet, the apparatus comprising: a first mounting element comprising first and second substantially spaced apart face portions forming parts of a chamber, the first and second face portions defining at least one pair of apertures, the or each pair of apertures comprising a first aperture formed in the first face portion and a second aperture formed in the second face portion and the first and second apertures lying opposite each other, and the first mounting element defining a chamber inlet leading to the chamber; and at least one generally cylindrical adapter element having an interior defining a receptacle of a size and shape for receiving therein at least a portion of one of said fuel injectors including the fuel inlet thereof, such that the injector's spray outlet is directed beyond the adapter element, and an outer configuration of a size and shape for positioning within one of said pairs of apertures of said first mounting element, the or each adapt
  • the apparatus further comprises at least one enclosure for receiving an output spray of liquid from the spray outlet of the or each fuel injector being tested.
  • control means is provided to be couplable to the or each injector being serviced so as to operate the or each injector to spray liquid through its spray outlet.
  • the first mounting means is provided with a plurality of pairs of apertures and the apparatus further comprises a plurality of adapter elements so that a plurality of fuel injectors can be serviced simultaneously.
  • different ones of the adapter elements are internally configured for receiving different types of fuel injectors.
  • at least one adapter element is internally configured for receiving at least a portion of a side feed fuel injector so that the fuel inlet of the injector is positioned within the receptacle of the adapter element.
  • At least one adapter element is internally configured for receiving at least a portion of a top feed fuel injector so that the inlet of the injector is positioned within the receptacle of the adapter element.
  • the or each adapter element for receiving a top feed injector comprises a first portion having an outer configuration of a size and shape for positioning within a respective one of the pairs of apertures of said first mounting element and having one or more adapter inlets extending therethrough and first and second sealing means mounted thereon, and a second portion, connectable to the first portion and defining a receptacle of a size and shape for receiving therein at least a portion of the top feed fuel injector to be tested including the fuel inlet thereof.
  • the apparatus preferably further comprises blanking elements, each externally configured to fit into a respective one of the pairs of apertures in the first mounting element and to close off both apertures thereof.
  • the apparatus preferably further comprises a second mounting element comprising a generally planar platform having a rim at a periphery thereof for supporting the first mounting element, the platform being arranged to cover the top of the or each enclosure, and the platform being provided with one or more apertures, each aperture being positioned so as to correspond to the position of one pair of apertures in the first mounting element.
  • a plurality of enclosures are provided, each enclosure corresponding to a respective aperture in the platform for receiving the output spray from a respective fuel injector being tested.
  • the second mounting element is preferably provided with first clamping means for clamping the or each enclosure between the second mounting element and a base.
  • the apparatus further comprises retaining means for retaining the or each adapter element within the first mounting element.
  • the retaining means comprises second clamping means for clamping the, or each, adapter element to the first mounting means.
  • the second clamping means preferably also clamps the first mounting element over the second mounting element.
  • the apparatus 1 for servicing fuel injectors includes a hollow mounting element 2 having a top face 3 and a bottom face 4 coupled together by an outer side wall 5 so as to define a chamber 6 therebetween.
  • the chamber 6 is generally annular in shape with the top and bottom faces 3 and 4 being joined together at a central portion 10 thereof.
  • a plurality of pairs of apertures 7 and 8 are provided in the mounting element, one aperture 7 of each pair being in the top face 3 and the second aperture 8 of each pair being in the bottom face 4 and in a corresponding position to the first aperture 7.
  • a liquid inlet 9 is provided in the side wall 5 to enable liquid to be fed into the chamber 6.
  • FIGS 1 and 2 Two different types of side feed injectors 11 and 12 are shown in Figures 1 and 2.
  • the first type 11 is used by The Ford Motor Co. and the second type 12 is used by General Motors Co.
  • the injectors illustrated are Throttle Body Injectors, the multi point side feed injectors have identical operational principles. Both types are provided with a generally annular filter-covered inlet 13 extending around a side of the injectors 11 and 12 through which filter liquid enters the injector. The liquid is sprayed out from the injector from a spray outlet 14 at a lower end of the injectors.
  • a valve (not shown) is provided in the injector between the inlet 13 and the outlet 14. The valve is electrically controlled from electrical control lines (not shown), which are connected to connectors 15 provided on an upper end of the injectors.
  • Adapter element 16 is generally cylindrical in shape and has a cylindrical wall 18 having an open top 19 through which the injector 11 is inserted into the adapter element so that the inlet 13 is positioned within the adapter element 16.
  • the inner side of the cylindrical wall 18 is provided with abutments 20 arranged to fit around the injector 11 and hold it so that its outlet 14 is directed downwardly and outwardly through an aperture 21 in the bottom of the adapter element 16.
  • the cylindrical wall 18 is provided with at least one passage 22 extending from the outside of the adapter element 16 to the interior thereof.
  • Two sealing elements 23 and 24, such as O-rings, are positioned around the outer circumference of the adapter element 16 and arranged to seal against the edges of the apertures 7 and 8, respectively, when the adapter element 16 is inserted therein.
  • the sealing elements 23 and 24 seal the chamber 6 so that liquid therein does not escape through the apertures 7 and 8, but passes through the passage(s) 22 into the interior of the adapter element 16 and thence into the inlet 17 of the injector 11 from which it can be sprayed downwardly and outwardly controlled by control signals connected to the connectors 15.
  • adapter element 17 is generally cylindrical in shape and has a cylindrical wall 25 having an open top 26 through which the injector 12 is inserted into the adapter element so that the inlet 13 is positioned within the adapter element 17.
  • the inner side of the cylindrical wall 25 is provided with abutments 27 arranged to fit around the injector 12 and hold it so that its outlet 14 is directed downwardly and outwardly through an aperture 28 in the bottom of the adapter element 17.
  • the cylindrical wall 25 is provided with at least one passage 29 extending from the outside of the adapter element 17 to the interior thereof.
  • Two sealing elements 30 and 31, such as O-rings, are positioned around the outer circumference of the adapter element 17 and arranged to seal against the edges of the apertures 7 and 8, respectively, when the adapter element 17 is inserted therein.
  • the sealing elements 30 and 31 seal the chamber 6 so that liquid therein does not escape through the apertures 7 and 8, but passes through the passage(s) 29 into the interior of the adapter element 17 and thence into the inlet 17 of the injector 12 from which it can be sprayed downwardly and outwardly controlled by control signals connected to the connectors 15.
  • the interior configurations of the adapter elements are designed to match the outer configurations of the injectors and provide liquid communication between the passages and the inlets of the injectors. It will further be appreciated that different injectors will require different adapter elements.
  • a retaining plate 32 having a plurality of recesses 33 therein at positions corresponding to the positions of the injectors.
  • the recesses are sized and shaped so as to abut the top of the injectors but allow access to the connectors 15 on the injectors.
  • the retaining plate is clamped to the mounting element 2 by means of a knurled hand screw 34 which includes a shoulder 35 abutting the edge of a central aperture 36 in the retaining plate 32 and screws onto an upper end of a threaded bolt 37.
  • the lower end of the bolt 37 is threaded into a threaded recess 38 in the central portion 10 of the mounting element 2 and retained therein by a locking nut 39.
  • a plurality of containers 40 are provided; one container per injector.
  • the containers 40 are formed by vertical tubes of transparent or translucent material, such as glass or plastic, and are graduated so that the volume of liquid received can be easily measured.
  • the containers 40 are positioned on a base plate 41 and are clamped to the base plate 41 by a clamping plate 42 having a central aperture 43 which is abutted by a shoulder 44 of a knurled hand screw 45.
  • the knurled hand screw 45 is threaded onto an upper end of a threaded bolt 46.
  • the lower end of the bolt 46 is threaded into a threaded recess 47 in a central portion 48 of the base plate 41 and retained therein by a locking nut 49.
  • the clamping plate 42 is provided around its periphery with a rim 50 on which the mounting element 2 rests.
  • a plurality of apertures 51 are arranged in the clamping plate 42 in positions corresponding to the injectors and the containers so as to allow the spray outlet from each injector to pass into a corresponding container 40.
  • the apparatus 1 has provision for servicing eight injectors at the same time. However, if a fewer number of injectors are to be serviced, then the apertures 7 and 8 in the mounting element 2 should be blocked to prevent liquid in the chamer 6 from escaping.
  • a further generally cylindrical adapter element 52 having a pair of sealing elements 53 and 54 arranged around its external cicumference, similarly to the O-rings 23 and 24 of adapter element 16, to seal the adapter element 52 to the edges of the apertures 7 and 8, respectively.
  • the adapter element 52 is preferably provided with a passageway 55 extending from the outside of the adapter element 52 to an end of a threaded recess 56 provided in the bottom of the adapter element 52.
  • a similar threaded recess 57 is provided in the top of the adapter element 52.
  • this structure enables the adapter element 52 to be used for mounting top feed injectors.
  • the threaded recess 56 is closed off by threaded blanking screw 58.
  • a retaining screw 59 is screwed into the top recess 57 and is provided with a flange 60 against which the retaining plate 32 abuts.
  • the apparatus 1 can also be used for servicing top feed injectors 61.
  • the top feed injector 61 includes an inlet 62 at its top, an outlet 63 at its bottom and a valve (not shown) in the injector between the inlet and the outlet.
  • the valve is controlled by signals on control lines (not shown) connected to connectors 64 at a side of the injector 61.
  • adapter element 52 is used together with a top feed injector receiving element 65.
  • the receiving element 65 is provided with a threaded portion 66 for threading into the bottom recess 56 of adapter element 52 and a receptacle portion 67 for receiving the top portion of the top feed injector 61.
  • a passageway 68 extends between the inside of receptacle portion 67 and the outside of threaded portion 66 providing liquid communication between the passageway 55 leading to the bottom recess 56 of the adapter element 52 and the top portion of the injector 61 such that liquid from the chamber 6 of the mounting element 2 can pass to the inlet 62 of the injector 61.
  • a retaining screw 59 is screwed into the top recess 57 of adapter element 52, in a similar fashion to that described above.
  • the lower portion of the top feed injector 61 abuts against the aperture 51 in clamping plate 42 so that the outlet 63 sprays liquid into the container 40.
  • a clamping frame 69 In order to clamp the mounting element 2 to the clamping plate 42, and thereby retain the injector 61 in position, a clamping frame 69 is provided.
  • the frame 69 comprises a pair of arms 70 and 71, each having a leg 72 at a lower end thereof for fitting into a respective aperture 73 provided in rim 50 of clamping plate 42.
  • the upper ends of the two arms are coupled to the sides of a threaded ring 74.
  • a knurled screw 75 is provided having a head 76 resting on hand screw 34 and a threaded shank 77 threaded into ring 74.
  • the head 76 is preferably provided with a tip 78 resting in a corresponding dip 79 in the head of hand screw 34.
  • apertures 7 are convenient, it is not essential. If desired a smaller unit with, say, four apertures 7 arranged in a line can be constructed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Nozzles (AREA)
EP94303242A 1993-05-18 1994-05-05 Gerät zum Warten von Kraftstoffeinspritzventilen Withdrawn EP0625634A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPL8843/93 1993-05-18
AUPL884393 1993-05-18

Publications (1)

Publication Number Publication Date
EP0625634A1 true EP0625634A1 (de) 1994-11-23

Family

ID=3776897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94303242A Withdrawn EP0625634A1 (de) 1993-05-18 1994-05-05 Gerät zum Warten von Kraftstoffeinspritzventilen

Country Status (4)

Country Link
EP (1) EP0625634A1 (de)
CN (1) CN1116301A (de)
BR (1) BR9401985A (de)
CA (1) CA2122775A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007049038A1 (en) * 2005-10-25 2007-05-03 Moving Sun Limited Fuel system test cell

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102226436B (zh) * 2011-06-08 2013-04-17 镇江中船设备有限公司 喷油器试验台
GB2572012A (en) * 2018-03-16 2019-09-18 Delphi Tech Ip Ltd Handling tool
CN108644044B (zh) * 2018-05-15 2019-09-13 平湖瓦爱乐发动机测试技术有限公司 一种用于多孔喷嘴的多油束分离器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3315503C1 (de) * 1983-04-28 1984-05-03 Daimler-Benz Ag, 7000 Stuttgart Testeinrichtung für Hochdruck-Einspritzventile
US4845979A (en) * 1987-09-11 1989-07-11 Ferocem Proprietary Limited Electronic fuel injector service device
WO1990013801A1 (en) * 1989-05-01 1990-11-15 Caterpillar Inc. Apparatus and method for testing fuel injectors

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3315503C1 (de) * 1983-04-28 1984-05-03 Daimler-Benz Ag, 7000 Stuttgart Testeinrichtung für Hochdruck-Einspritzventile
US4845979A (en) * 1987-09-11 1989-07-11 Ferocem Proprietary Limited Electronic fuel injector service device
WO1990013801A1 (en) * 1989-05-01 1990-11-15 Caterpillar Inc. Apparatus and method for testing fuel injectors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007049038A1 (en) * 2005-10-25 2007-05-03 Moving Sun Limited Fuel system test cell
GB2432885A (en) * 2005-10-25 2007-06-06 Managed Technologies Ltd Testing i.c. engine fuel injectors

Also Published As

Publication number Publication date
CA2122775A1 (en) 1994-11-19
BR9401985A (pt) 1994-12-13
CN1116301A (zh) 1996-02-07

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