EP0188745B1 - Injecteur de carburant pour moteurs à combustion interne - Google Patents

Injecteur de carburant pour moteurs à combustion interne Download PDF

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Publication number
EP0188745B1
EP0188745B1 EP85115988A EP85115988A EP0188745B1 EP 0188745 B1 EP0188745 B1 EP 0188745B1 EP 85115988 A EP85115988 A EP 85115988A EP 85115988 A EP85115988 A EP 85115988A EP 0188745 B1 EP0188745 B1 EP 0188745B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
injection nozzle
union nut
nozzle according
contact disc
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
Application number
EP85115988A
Other languages
German (de)
English (en)
Other versions
EP0188745A3 (en
EP0188745A2 (fr
Inventor
Bernhard Dipl.-Ing. Kaczynski
Alfred Dr.-Ing. Schmitt
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
Publication of EP0188745A2 publication Critical patent/EP0188745A2/fr
Publication of EP0188745A3 publication Critical patent/EP0188745A3/de
Application granted granted Critical
Publication of EP0188745B1 publication Critical patent/EP0188745B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/001—Glowing plugs for internal-combustion engines
    • 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
    • F02M53/00—Fuel-injection apparatus characterised by having heating, cooling or thermally-insulating means
    • F02M53/04—Injectors with heating, cooling, or thermally-insulating means
    • F02M53/06—Injectors with heating, cooling, or thermally-insulating means with fuel-heating means, e.g. for vaporising
    • 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

Definitions

  • the invention relates to a fuel injection nozzle according to the preamble of the main claim.
  • a known injection nozzle of this type EP-A-0140148 prior art according to Art. 54 (3)
  • the support shoulder for the sleeve is formed on an annular body which is welded to the union nut and the sleeve together with the contact disk and insulating washers on the end face the cap nut presses.
  • This design is relatively complex and requires tight tolerances on the union nut and ring body so that the glow body is exactly aligned with the nozzle axis.
  • an incandescent body is inserted into a sleeve, which is attached to the end of the union nut on the combustion chamber side and is welded to the union nut (DE-A1 33 07 109).
  • this design does not require an additional ring body for fastening the sleeve, the weld seam is constantly under tension if a tensioned heat protection ring is arranged between the glow body or contact disk and the nozzle body.
  • Patent applications EP-A-0 188 743, EP-A-0 188 744 and EP-A-0 188 746 are concerned with fuel injectors of a similar type to the present invention.
  • the arrangement according to the invention with the characterizing features of the main claim has the advantage that the tensioning forces possibly acting on the sleeve are intercepted in a dimensionally stable manner by the support shoulder on the union nut without an additional ring body having to be welded to the union nut.
  • the section of the union nut encompassing the sleeve can be made longer if the wall openings of the sleeve extend from its downstream end face.
  • the arrangement can advantageously be such that the sleeve has an inwardly directed annular collar at the downstream end which holds the one end of the incandescent body centered and is provided with the wall openings. This will u. a. also facilitates the assembly of the glow insert consisting of sleeve, incandescent body, contact disk and insulating washers.
  • the centering of the annular insulating bodies can be carried out, for example, by means of a cylindrical section of the sleeve which adjoins the flange and which suitably comprises the outside of the insulating body and the contact disk.
  • a cylindrical section of the sleeve which adjoins the flange and which suitably comprises the outside of the insulating body and the contact disk.
  • the insulating body lying between the contact disk and the sleeve is centered on the sleeve by an annular collar engaging in its bore. This increases the diameter of the insulating body and reduces the heat radiation from the incandescent body onto the insulating body.
  • the parts can also be centered in a joining tool in which the parts are expediently connected to one another. This means that a centering projection for the parts can be dispensed with entirely on the sleeve.
  • a perfect seal between the sleeve and the nozzle body and, at the same time, good heat protection of the nozzle body is obtained if a pressure-resistant metallic retaining ring rests on the insulating body facing the nozzle body, against which a sealing and heat protection ring resting on the end wall of the nozzle body is supported.
  • an insulating body can also be provided, which is provided with a metallization at least on its end face facing the nozzle body.
  • the clamping force of the sealing and heat protection ring can advantageously also serve to hold the parts of the glow insert to one another and to the union nut, so that the parts do not have to be glued or soldered to one another. In some cases, however, it may be advantageous with a view to facilitating assembly if the sleeve, the contact disk, the insulating body, the incandescent body and, if appropriate, the retaining ring form a prefabricated structural unit which is inserted as a whole into the union nut.
  • the ventilation of the incandescent body can be further improved and the thermal load on the insulating bodies or their connections to the sleeve and the contact disk can be further reduced.
  • the incandescent body is tapered towards the nozzle body to match the shape of the spray jet.
  • a wire coil is used as the incandescent body, the conical design, as a further advantage, results in better dynamic behavior compared to a cylindrical design of the incandescent body, and therefore reduces the risk of breakage.
  • the measure also serves to provide the contact disk with holes in the region of the annular space formed between the sleeve and the incandescent body for the air drawn in to pass through.
  • the assembly of an injection nozzle provided with a heat protection ring is further facilitated if the outer ring edge of the heat protection ring is raised and presses against a conical wall section of the nozzle body. As a result, the heat protection ring is centered directly on the nozzle body.
  • the outer ring edge of the heat protection ring can serve as an additional sealing element downstream of the inner ring edge.
  • FIGS. 1 to 3 each show one of the exemplary embodiments on the basis of a section through the end of an injection nozzle on the combustion chamber side.
  • the injection nozzle according to FIG. 1 has a nozzle body 10, in which, as is known, a valve seat is formed and a valve needle is displaceably mounted.
  • the nozzle body 10 and an intermediate disk limiting the stroke of the valve needle are clamped by a union nut 12 to a nozzle holder, in which u. a. a closing spring pressing the valve needle against the valve seat is accommodated.
  • the nozzle body 10 is provided with a conical wall section 14 which merges into a flat end wall 16.
  • the union nut 12 is extended on the combustion chamber side beyond the nozzle body 10 and is provided downstream of its end wall 16 with an inner support shoulder 18 against which an annealing insert, designated as a whole by the reference number 20, bears.
  • an annealing insert designated as a whole by the reference number 20, bears.
  • the latter has a filament 22 designed as a wire coil, which forms a passage 24 for the spray jets 26.
  • the incandescent body 22 is dimensioned such that the spray jets do not wet the incandescent body 22, but cause an injector effect, through which air is sucked from the combustion chamber into the interior of the incandescent body 22.
  • the incandescent body 22 is surrounded by a metallic sleeve 30, which has a cylindrical section 32 of larger diameter and a cylindrical section 34 of smaller diameter.
  • the transition between the sections 32, 34 is formed by a flange section 36, which rests on the support shoulder 18 of the union nut 12.
  • the smaller section 34 is provided at the end with an inwardly directed annular collar 38, on which the incandescent body 22 is supported and soldered in the center.
  • Downstream of the support shoulder 18, the union nut 12 is provided with a bore section 40 which fits around the section 34 of the sleeve.
  • An annular collar 42 adjoins the bore section 40 and overlaps the end of the sleeve 30 and the incandescent body 22 on the combustion chamber side in a protective manner.
  • a first annular insulating body 44, a metallic contact disk 46, a second annular insulating body 48 and a metallic retaining ring 50 are inserted one after the other into the larger cylindrical section 32 of the sleeve 30.
  • the insulating body 44 rests on the flange part 36 and the parts 44 to 50 are centered on the outside by the sleeve 30.
  • the upstream end of the incandescent body 22 is soldered to the contact disk 46, which has an inner flanged edge 52 for centering the incandescent body 22.
  • the contact disk 46 is provided with a connecting lug 54 which passes through a circumferential recess in the sleeve 30, projects into a transverse bore 56 of the union nut 12 and is used to fasten a connecting cable.
  • the insulating bodies 44 and 48 are preferably made of a ceramic material and the terminal lug 54 of the contact disk 46 is preferably surrounded by an insulating covering.
  • three millings 57 are provided which are uniformly distributed over the circumference, via which the sucked-in air reaches the annular space 58 formed between the sleeve 30 and the incandescent body 22 and from there via the interstices between the turns into the interior of the incandescent body 22.
  • a metal heat protection ring 60 is clamped deformed between the holding ring 50 and the nozzle body 10 and presses with an inner ring edge 62 against the end wall 16 of the nozzle body 10.
  • a central ring region 64 of the heat protection ring 60 which is offset axially to the inner ring edge 62, is supported on the retaining ring 50.
  • the outer ring edge 66 of the heat protection ring 60 is drawn conically upwards and lies on the conical. Wall section 14 of the nozzle body 10. As a result, the heat protection ring 60 is centered on the nozzle body 10 and the passage 24 and the annular space 58 are properly sealed against the chamber 68 surrounding the heat protection ring 60.
  • the parts 44 to 50 are soldered or glued to one another and to the sleeve 30, so that they can be handled as an independent structural unit before the injection nozzle is assembled.
  • This structural unit is inserted into the union nut 12 from the upstream side and advanced until it rests on the support shoulder 18. Then the sleeve 30 can be placed at a suitable location are glued or soldered or welded to the union nut 12.
  • the assembly of the injection nozzle is then advantageously carried out so that the nozzle holder, the washer and the nozzle body 10 are placed one on top of the other, the heat protection ring 60 is placed on the nozzle body 10 and then the union nut 12 together with the glow insert 20 is put on the parts and screwed onto the nozzle holder, the tensing heat protection ring 60 is held centered on the nozzle body 10.
  • the parts 44 to 50 can first be held in the sleeve 30 only by frictional engagement without being connected to one another.
  • the parts are then pressed by the tensing heat protection ring 60 against the flange part 36 of the sleeve and this against the support shoulder 18, so that, if necessary, also on an additional operation for firmly connecting the sleeve 30 to the union nut 12 can be dispensed with.
  • the embodiment described has the advantage that the clamping force of the heat protection ring 60 is positively absorbed by the support shoulder 18 without an annular body having to be additionally welded onto the union nut 12.
  • the power supply element required for contacting the incandescent body 22, namely the connecting lug 54, does not need to be passed through a bore in the union nut 12, which would have to be carefully sealed against the combustion chamber by melting glass or the like.
  • the insulating body 44, 48 can be dimensioned so wide that there is a perfect seal to the metallic parts 30, 46, 50 and the surface pressure remains within acceptable limits.
  • the incandescent body 22 is precisely centered on the sleeve 30 and the contact disk 46 and fastened centrally.
  • the glow insert 20 consists overall of simple parts that are easy to control and assemble in manufacture.
  • FIGS. 2 and 3 correspond essentially with the previously described exemplary embodiment with regard to the nozzle body, the union nut, the heat protection ring and the insulating body, so that the same reference numerals are also used for these parts.
  • a sleeve 70 is provided which lies with a flange edge 72 on the support shoulder 18 of the union nut 12.
  • the lower insulating body 44 is centered here by an inner annular collar 74 of the sleeve 70, which protrudes above the flange edge 72.
  • the upper insulating body 48 is centered by a retaining ring 76 with an L-shaped cross section, which with its cylindrical leg 78 engages over both insulating bodies 48 and 44.
  • the sleeve 70 has an inwardly and slightly obliquely downwardly directed annular collar 80, which is provided with bores 82 for the passage of air into the interior of the sleeve 70.
  • a contact disk 84 is clamped between the insulating bodies 44, 48 and differs from the embodiment according to FIG. 1 essentially only by bores 86.
  • an incandescent body 88 is held, which is designed as a wire coil, which is tapered toward the nozzle body 10.
  • the axes of the bores 82 run approximately parallel to the adjacent surface line of the incandescent body 88.
  • the diameter of the insulating bodies 44, 48 can be increased compared to the embodiment according to FIG. 1, as a result of which the thermal load on the insulating bodies 44, 48 or the connection points between the insulating bodies and the contact disk 84 is reduced.
  • the design has the advantage that the union nut 12 can enclose the sleeve 70 under the flange edge 72 over a greater axial length than in the exemplary embodiment according to FIG. 1, which facilitates assembly and improves the heat dissipation from the sleeve 70.
  • the conical glow body 88 has a better dynamic behavior than a cylindrical filament, which reduces the risk of breakage.
  • the conical design of the incandescent body 88 achieves a better adaptation to the spray jet shape and a further reduction in the thermal load on the insulating bodies 44, 48.
  • the air supply to the spray jets is further improved by the widening of the annular space between the incandescent body 88 and the surrounding parts in the upper region of the incandescent body 88, and by the additional bores 86 in the contact disk 84.
  • the incandescent body of which consists of a ceramic sleeve, which is provided on its outer or inner surfaces with e.g. B. is printed heating conductors.
  • the injection nozzle according to FIG. 3 has a sleeve 90 which is firmly crimped into the union nut 12 between the support shoulder 18 and an end wall 92.
  • the sleeve 90 is provided on the combustion chamber side with an inner annular collar 94, on which a glow element 88 which corresponds to the embodiment according to FIG. 2 is supported and fastened in the center.
  • Bores 96 are provided in the annular collar 94 for the passage of the sucked-in air and are aligned parallel to the axis of the injection nozzle.
  • the insulating bodies 44, 48, a contact disk 97 and a flat metallic holding disk 98 are firmly connected to one another and to the sleeve 90.
  • the outer ring edge of the contact disk 97 is continuously raised and connected to a plurality of power supply lines 99 which are distributed uniformly over the circumference.

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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)

Claims (14)

1. Injecteur de carburant pour moteur à combustion interne, avec un corps d'injecteur (10) fixé à un support d'injecteur par un écrou de recouvrement (12), et une bougie (22) disposée en aval du corps d'injecteur (10), ladite bougie ayant un passage (24) pour le jet d'injection et étant entourée avec un jeu radial par une douille (30), laquelle, avec une partie en forme de bride (72), repose sur un épaulement de soutien (18) disposé en aval du corps d'injecteur (10) et est reliée de façon fixe avec l'écrou de recouvrement (12), et est dotée de perçages de parois (57), par lesquels les jets d'injection aspirent l'air de la chambre de combustion vers l'intérieur de la bougie (22), dont le raccordement électrique du côté de la chambre de combustion est relié à la douille (30), et dont l'autre raccordement électrique est relié électriquement à une rondelle de contact (46), laquelle est maintenue de façon fixe avec la douille (30) entre l'épaulement de soutien (18) de l'écrou de recouvrement (12) et le côté frontal du corps d'injecteur (10) ; caractérisé en ce que l'épaulement de soutien (18) est formé directement sur l'écrou de recouvrement (12), et que les diamètres intérieurs de l'écrou de recouvrement (12) dans la zone se trouvant en amont de son épaulement de soutien (18) sont plus grands que les diamètres extérieurs de la douille (30, 70, 90) et de la rondelle de contact (46, 84, 97), et que ces différentes pièces, avec la bougie (22, 88), peuvent être mises en place depuis l'extrémité amont dans l'écrou de recouvrement (12) et coulissées jusqu'à l'épaulement de soutien (18).
2. Injecteur selon la revendication 1, caractérisé en ce qu'une section (40) de l'écrou. de recouvrement (12) entourant la douille (30, 70, 90) se raccorde de façon appropriée à l'épaulement de soutien (18).
3. Injecteur selon la revendication 2, caractérisé en ce que les percements de parois (82, 96) de la douille (70, 90) se terminent sur la face frontale se trouvant du côté aval de cette douille.
4. Injecteur selon la revendication 3, caractérisé en ce que la douille (70, 90), à l'extrémité frontale se trouvant du côté aval, a un collier annulaire (80, 94) dirigé vers l'intérieur, lequel maintient de façon fixe et centrée l'extrémité de la bougie (88), et est pourvu de percements de parois (82, 96).
5. Injecteur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un alésage central dans la rondelle de contact (46, 84, 97) est entouré d'un col bridé (52), qui maintient de façon fixe et centrée l'extrémité amont de la bougie (22, 88).
6. Injecteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la rondelle de contact (46, 84, 97) a une zone en forme d'anneau décalée axialement par rapport à sa zone centrale, cette zone en forme d'anneau étant située entre deux corps isolants (44, 48), en forme d'anneau et centrés par rapport à la douille (30, 70, 90), l'un de ces deux corps reposant sur une bride (36, 72) de la douille (30, 70, 90), cette bride, de son côté, reposant sur l'épaulement de soutien (18) de l'écrou de recouvrement (12).
7. Injecteur selon la revendication 6, caractérisé en ce que le corps isolant (44) situé entre la rondelle de contact (84) et la douille (70) est centré par un collier annulaire (74) engagé dans son alésage.
8. Injecteur selon la revendication 6, caractérisé en ce que les deux corps isolants (44, 48) en forme de bague sont reliés de façon fixe avec la rondelle de contact (97) et la douille (90), et le centrage est obtenu en reliant les différentes pièces avec un outillage de joints.
9. Injecteur selon la revendication 6, caractérisé en ce qu'une bague de maintien (50, 76, 98) métallique et résistant à la pression est posée sur le corps isolant (48) qui est du côté du corps d'injecteur (10), ou bien en ce que ce corps isolant (48) porte un revêtement métallique contre lequel, sur le côté frontal du corps d'injecteur (10), s'appuie une bague (60) d'étanchéité et de protection contre la chaleur.
10. Injecteur selon la revendication 6, caractérisé en ce que la douille (30, 70), la rondelle de contact (46, 84), les corps isolants (44, 48) et, le cas échéant, la bague de maintien (50, 76) sont maintenus sur l'épaulement de soutien (18) de l'écrou de recouvrement 12 par l'élasticité d'une bague (60) d'étanchéité et de protection contre la chaleur.
11. Injecteur selon la revendication 10, caractérisé en ce que la douille (30, 70, 90), la rondelle de contact (46, 84, 97), les corps isolants (44, 48), la bougie (22, 88) et, le cas échéant, la bague de maintien (50, 76, 98) forment une unité de construction préfabriquée.
12. Injecteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la bougie (88) a une forme conique en direction du corps d'injecteur (10).
13. Injecteur selon l'une quelconque des revendications précédentes, caractérisé en ce que la rondelle de contact (84, 97), dans la zone de l'espace annulaire formé entre la douille (70, 90) et la bougie (88), est également pourvue de trous (86), pour l'admission de l'air aspiré.
14. Injecteur selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un corps d'injecteur (10) est prévu, lequel, sur l'extrémité frontale du côté de la chambre de combustion, est pourvu d'une section conique (14) de parois, et qu'une bague (60) de protection contre la chaleur est disposée, qui presse avec son bord annulaire intérieur (62) contre une zone centrale plane de la paroi frontale du corps d'injecteur (10), qui s'appuie avec une zone annulaire médiane sur la douille (30) portant la bougie (22), et qui est centrée par le bord annulaire extérieur (66), grâce à quoi le bord annulaire extérieur (66) de la bague (60) de protection contre la chaleur est surélevé et repose sur la section de paroi conique (14) du corps d'injecteur (10).
EP85115988A 1985-01-23 1985-12-14 Injecteur de carburant pour moteurs à combustion interne Expired EP0188745B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853502109 DE3502109A1 (de) 1985-01-23 1985-01-23 Kraftstoff-einspritzduese fuer brennkraftmaschinen
DE3502109 1985-01-23

Publications (3)

Publication Number Publication Date
EP0188745A2 EP0188745A2 (fr) 1986-07-30
EP0188745A3 EP0188745A3 (en) 1987-04-15
EP0188745B1 true EP0188745B1 (fr) 1989-03-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP85115988A Expired EP0188745B1 (fr) 1985-01-23 1985-12-14 Injecteur de carburant pour moteurs à combustion interne

Country Status (3)

Country Link
EP (1) EP0188745B1 (fr)
JP (1) JPS61169655A (fr)
DE (2) DE3502109A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD228598A1 (de) * 1984-05-11 1985-10-16 Karl Marx Stadt Automobilbau Gluehkerzenanordnung, vorzugsweise fuer vorkammer-verbrennungsmotoren
DE3502098A1 (de) * 1985-01-23 1986-07-24 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoff-einspritzduese fuer brennkraftmaschinen
DE3609749A1 (de) * 1986-03-22 1987-09-24 Bosch Gmbh Robert Einrichtung zum einspritzen von kraftstoff in brennraeume von brennkraftmaschinen
DE3615636A1 (de) * 1986-05-09 1987-11-12 Bosch Gmbh Robert Einrichtung zum einspritzen von kraftstoff in einen brennraum einer brennkraftmaschine
DE3617354A1 (de) * 1986-05-23 1987-11-26 Bosch Gmbh Robert Einrichtung zum einspritzen von kraftstoff in einen brennraum einer brennkraftmaschine
DE3617353A1 (de) * 1986-05-23 1987-11-26 Bosch Gmbh Robert Kraftstoff-einspritzduese fuer brennkraftmaschinen
JPH0530269U (ja) * 1991-09-25 1993-04-20 株式会社イナツクス 水 栓

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0188743A2 (fr) * 1985-01-23 1986-07-30 Robert Bosch Gmbh Dispositif d'injection de combustible dans la chambre de combustion d'un moteur à combustion interne
EP0188746A2 (fr) * 1985-01-23 1986-07-30 Robert Bosch Gmbh Dispositif pour l'injection de carburant dans une chambre de combustion d'un moteur à combustion interne

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3307109A1 (de) * 1982-08-14 1984-03-15 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zum einspritzen von kraftstoff in brennraeume von insbesondere selbstzuendenen brennkraftmaschinen
DE3307666A1 (de) * 1983-03-04 1984-09-06 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zum einspritzen von kraftstoff in brennraeume, insbesondere in brennkammern von dieselmotoren
DE3327773A1 (de) * 1983-05-13 1984-11-15 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zur kraftstoffeinspritzung in brennraeume
DE3335920A1 (de) * 1983-10-03 1985-04-18 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zum einspritzen von kraftstoff in brennraeume von brennkraftmaschinen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0188743A2 (fr) * 1985-01-23 1986-07-30 Robert Bosch Gmbh Dispositif d'injection de combustible dans la chambre de combustion d'un moteur à combustion interne
EP0188746A2 (fr) * 1985-01-23 1986-07-30 Robert Bosch Gmbh Dispositif pour l'injection de carburant dans une chambre de combustion d'un moteur à combustion interne

Also Published As

Publication number Publication date
DE3568829D1 (en) 1989-04-20
EP0188745A3 (en) 1987-04-15
JPS61169655A (ja) 1986-07-31
DE3502109A1 (de) 1986-07-24
EP0188745A2 (fr) 1986-07-30

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