EP0051129B1 - Kraftstoff-Einspritzdüse für Brennkraftmaschinen, insbesondere für Dieselmotoren - Google Patents

Kraftstoff-Einspritzdüse für Brennkraftmaschinen, insbesondere für Dieselmotoren Download PDF

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Publication number
EP0051129B1
EP0051129B1 EP81106991A EP81106991A EP0051129B1 EP 0051129 B1 EP0051129 B1 EP 0051129B1 EP 81106991 A EP81106991 A EP 81106991A EP 81106991 A EP81106991 A EP 81106991A EP 0051129 B1 EP0051129 B1 EP 0051129B1
Authority
EP
European Patent Office
Prior art keywords
recess
intermediate plate
induction coil
nozzle
coil
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
EP81106991A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0051129A1 (de
Inventor
Odon Dipl.-Ing. Kopse
Nestor Rodriguez Dipl.-Ing. Amaya
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 EP0051129A1 publication Critical patent/EP0051129A1/de
Application granted granted Critical
Publication of EP0051129B1 publication Critical patent/EP0051129B1/de
Expired 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
    • F02M65/005—Measuring or detecting injection-valve lift, e.g. to determine injection timing

Definitions

  • the invention relates to a fuel injection nozzle according to the preamble of the main claim. It has been found that the bottom section of the intermediate plate supporting the induction coil is relatively thin and therefore insufficiently rigid. The stiffness is increased by the reinforcing ring on the inside of the base part. Despite this reinforcement, it cannot be ruled out that - due to the low rigidity - the induction coil glued into the recess will come loose and the function of the induction coil acting as a signal transmitter will be disturbed.
  • FIG. 1 shows the first exemplary embodiment with a conically enlarged recess wall
  • Figure 2 shows the second example with an annular groove in the recess wall.
  • an intermediate plate 62 clamped between a nozzle body 10 and a nozzle holder 13 shows a valve needle 11 with a pressure pin 17, which cooperates with a pressure pin 18 loaded by a pressure spring 19.
  • the intermediate plate 62 abutting the nozzle holder 13 has a ring 59 which receives the pressure pin 17.
  • a rotationally symmetrical recess 61 is recessed with an end base 63 and a jacket-shaped wall 64 which widens conically towards the base 63.
  • a capsule 65 made of magnetic material, in particular metal, consists of a sleeve 66 and an inner flange 67.
  • the capsule 65 receives an induction coil 20 and is inserted into the recess 61 in such a way that the inner flange 67 connects the induction coil 20 to the bottom 63 the recess 61 keeps pressed.
  • the capsule 65 is glued into the cutout 61 of the intermediate plate 62, the adhesive 68 filling the ring region, which is triangular in cross section, between the wall 64 and the outer casing 69 of the capsule 65.
  • the intermediate plate 72 in FIG. 2 has a cylindrical wall 74 with a sawtooth-shaped annular groove 75 in cross section, the cross section of which widens towards the bottom 73.
  • the capsule 65 holds the induction coil 20 pressed against the bottom 73 of the recess 71, and the adhesive 68 fills the area between the wall 74 and the outer casing 69 of the capsule 65 and the sawtooth-shaped annular groove 75.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP81106991A 1980-10-30 1981-09-07 Kraftstoff-Einspritzdüse für Brennkraftmaschinen, insbesondere für Dieselmotoren Expired EP0051129B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3040811 1980-10-30
DE19803040811 DE3040811A1 (de) 1980-10-30 1980-10-30 Kraftstoff-einspritzduese fuer brennkraftmaschinen, insbesondere fuer dieselmotoren

Publications (2)

Publication Number Publication Date
EP0051129A1 EP0051129A1 (de) 1982-05-12
EP0051129B1 true EP0051129B1 (de) 1984-01-25

Family

ID=6115491

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106991A Expired EP0051129B1 (de) 1980-10-30 1981-09-07 Kraftstoff-Einspritzdüse für Brennkraftmaschinen, insbesondere für Dieselmotoren

Country Status (4)

Country Link
US (1) US4394823A (Direct)
EP (1) EP0051129B1 (Direct)
JP (1) JPS57102557A (Direct)
DE (2) DE3040811A1 (Direct)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326840A1 (de) * 1983-07-26 1985-02-14 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoff-einspritzduese fuer brennkraftmaschinen
DE3515264A1 (de) * 1985-04-27 1986-11-27 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoff-einspritzduese fuer brennkraftmaschinen
GB2260165A (en) * 1991-10-01 1993-04-07 Lucas Ind Plc I.c. engine fuel injector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE561146A (Direct) * 1956-09-27
DE3004424A1 (de) * 1980-02-07 1981-08-13 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoff-einspritzduesenhalter

Also Published As

Publication number Publication date
JPS57102557A (en) 1982-06-25
DE3162039D1 (en) 1984-03-01
US4394823A (en) 1983-07-26
EP0051129A1 (de) 1982-05-12
DE3040811A1 (de) 1982-06-16
JPH031510B2 (Direct) 1991-01-10

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