EP0020888A1 - Injecteur de combustible pour moteurs à combustion interne - Google Patents

Injecteur de combustible pour moteurs à combustion interne Download PDF

Info

Publication number
EP0020888A1
EP0020888A1 EP80101801A EP80101801A EP0020888A1 EP 0020888 A1 EP0020888 A1 EP 0020888A1 EP 80101801 A EP80101801 A EP 80101801A EP 80101801 A EP80101801 A EP 80101801A EP 0020888 A1 EP0020888 A1 EP 0020888A1
Authority
EP
European Patent Office
Prior art keywords
contact
injection nozzle
valve needle
compression spring
sleeve
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.)
Granted
Application number
EP80101801A
Other languages
German (de)
English (en)
Other versions
EP0020888B1 (fr
Inventor
Gerhard Stumpp
Ewald Dr.-Ing. Eblen
Karl Hofmann
Nestor Rodriguez Amaya
Josef Schlagenhauf
Odon Kopsé
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 EP0020888A1 publication Critical patent/EP0020888A1/fr
Application granted granted Critical
Publication of EP0020888B1 publication Critical patent/EP0020888B1/fr
Expired 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
    • 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 injector for internal combustion engines according to the preamble of the main claim.
  • a fuel injector for internal combustion engines according to the preamble of the main claim.
  • Such an injector is already known from DE-OS 27 39 628, in which the connector is connected to a measuring device to detect the electrical resistance between the nozzle needle and the valve seat and to indicate the movement of the nozzle needle relative to the valve seat.
  • the valve seat is grounded and the nozzle needle is connected to the positive pole of the vehicle electrical system, and the electrical connection of the connection piece with the nozzle needle takes place via the pressure body and the closing spring.
  • the fuel injector for internal combustion engines according to the invention with the characterizing features of the main claim has the advantage over the discussed prior art that the electrical connection between the nozzle needle and the connector is made safely and that series products can be designed as electrical switches without great effort, without the fuel is used to isolate the switch.
  • FIG. 1 shows the first exemplary embodiment
  • FIG. 2 shows the second exemplary embodiment in an axial section and on an enlarged scale.
  • the two fuel injection valves for internal combustion engines in FIGS. 1 and 2 are essentially made of electrically conductive materials and are rotationally symmetrical with respect to the valve axis 9. Both injection valves essentially consist of a nozzle holder 10, an adjoining intermediate plate 11 and a nozzle body 12, which are screwed axially by means of a union nut 13.
  • a valve needle 15 has a needle shaft 18 which slides in a guide bore 14 of the nozzle body 12, a sealing cone 17 which interacts with a valve seat 16 of the nozzle body 12 and a pressure pin 19 which bears continuously on a pressure pin 20.
  • a spring space 21 which is open at the end and has a shoulder 22 and a bore 23 are recessed, to which a recess 24 leading to the outside is continued.
  • a helical compression spring 25 is supported on the one hand via a spring adjusting washer 26 on the shoulder 22 and on the other hand via an insulation to be described on the pressure bolt 20.
  • the fuel reaches the inlet channels 29 to 32 and ring channels 33, 34, in a pressure chamber .27 of the nozzle body 12, which has a connection to a spray opening 28 via the valve seat 16.
  • a line element 40 made of electrically conductive materials has a contact pin 41 fastened in the bore 23 by means of an insulating sleeve 42, a contact spring 43 clamped onto the end section thereof and a contact cone 44 which is sprinkled therein. This lies in a depression 46 of a pressure bolt 45 non-positively, so that there is a permanent electrical contact between the two parts.
  • a guide surface 48 and a bearing surface 49 of the pressure pin 20 are coated with an insulation 47 made of abrasion-resistant material, so that the pressure spring 25 is electrically insulated from the pressure pin 20.
  • a connecting piece 50 is fastened via an insulating sleeve 51, the contact tongue 52 of which receives a line (not shown) of a test device and the end portion of a connecting line 54 is soldered into the eye 53 thereof; likewise the other end section of this connecting line is connected to the contact pin 41.
  • the needle shaft 18 of the valve needle 15 has an insulating layer 55 made of abrasion-resistant material, which slides in the guide bore 14 of the nozzle body 12.
  • the injector is screwed into the engine block, not shown, in its functional state and consequently has electrically conductive contact with the ground of the vehicle electrical system.
  • that of valve seat 16 and sealing cone 17 formed electrical switch closed, whereby a circuit between the nozzle body 12 and the test device, not shown, is also closed.
  • the electrical switch 16/17 When the injection nozzle is in the open state, the electrical switch 16/17 is open, and since the valve needle 15, the pressure pin 20, the contact pin 41 and the connector 50 have electrical insulation with respect to the nozzle body 12 and the nozzle holder 10, the current path now opens and therefore interrupts the electrical connection between the engine block and the test device.
  • the line element 60 of the injection valve in FIG. 2 is designed as a helical spring with two axial ends 61, 62 and is arranged to move freely within the compression spring 25.
  • the end 62 is non-positively supported in the trough 46 of the pressure pin 20, and the other end 61 is in a contact pin 64 which is stuck in the bore 23 by means of an insulating cap 65.
  • the connecting piece 66 is fastened via a sleeve 67 in the recess 24 of the nozzle holder 10, the plug 68 which is insulated from the sleeve 67 runs out into a contact tongue 69 which rests non-positively on a pin 70 of the contact bolt 64 and consequently establishes an electrical connection.
  • a sleeve 71 made of hardened steel consisting of a ring 72 and a collar 73 is glued to the pressure bolt 20 by means of an electrically insulating plastic layer 74 and forms the guide surface 48 and the bearing surface 49 for the compression spring 25.
  • a sleeve 75 made of hardened steel is glued to the needle shaft 18 of the valve needle 15 by means of an insulating layer 76 and slides in the guide bore 24 of the nozzle body 12.
  • the sealing cone 17 with the valve seat 16 forms the electrical switch and the interconnected parts between the sealing cone 17 and the plug 68 are electrically insulated from the cooperating housing parts, so that the current path between the valve seat 16 and the test device, not shown, through the opening and closing of the injection nozzle is also opened and closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP80101801A 1979-06-22 1980-04-03 Injecteur de combustible pour moteurs à combustion interne Expired EP0020888B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2925187A DE2925187A1 (de) 1979-06-22 1979-06-22 Kraftstoff-einspritzduese fuer brennkraftmaschinen
DE2925187 1979-06-22

Publications (2)

Publication Number Publication Date
EP0020888A1 true EP0020888A1 (fr) 1981-01-07
EP0020888B1 EP0020888B1 (fr) 1983-10-12

Family

ID=6073858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101801A Expired EP0020888B1 (fr) 1979-06-22 1980-04-03 Injecteur de combustible pour moteurs à combustion interne

Country Status (4)

Country Link
US (1) US4340181A (fr)
EP (1) EP0020888B1 (fr)
JP (2) JPS566063A (fr)
DE (2) DE2925187A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2153907A (en) * 1983-12-14 1985-08-29 Diesel Kiki Co Solenoid valve constituting an on-off switch
GB2154658A (en) * 1984-02-28 1985-09-11 Diesel Kiki Co Valve unit including a switch
EP0101822B1 (fr) * 1982-08-05 1987-10-28 Robert Bosch Gmbh Buse d'injection de carburant pour moteurs à combustion interne
WO1992005363A1 (fr) * 1990-09-18 1992-04-02 Lucas Industries Public Limited Company Gicleurs d'injection de carburant
WO2005010335A2 (fr) * 2003-07-23 2005-02-03 Siemens Aktiengesellschaft Circuit et procede pour faire fonctionner un systeme d'injection et injecteur
WO2005080786A1 (fr) * 2004-02-11 2005-09-01 Siemens Aktiengesellschaft Element de contact pour le pointeau de la soupape d'un injecteur de moteurs a combustion interne

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3029721A1 (de) * 1980-08-06 1982-03-04 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoff-einspritzventil fuer brennkraftmaschinen
DE3117779A1 (de) * 1981-05-06 1982-11-25 Robert Bosch Gmbh, 7000 Stuttgart "kraftstoff-einspritzduese fuer brennkraftmaschinen"
DE3125884A1 (de) * 1981-07-01 1983-01-20 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoff-einspritzduese fuer brennkraftmaschinen
JPS5833773U (ja) * 1981-08-31 1983-03-04 トヨタ自動車株式会社 デイ−ゼル機関の燃料噴射時期測定装置
US4625918A (en) * 1983-07-29 1986-12-02 Diesel Kiki Co., Ltd. Fuel injection valve
AU5270490A (en) * 1989-03-07 1990-10-09 Karl Holm An atomizing nozzle device for atomizing a fluid and an inhaler
DE19523243B4 (de) * 1995-06-27 2009-04-02 Robert Bosch Gmbh Kraftstoffeinspritzventil für Brennkraftmaschinen mit einer Spannmutter mit konisch ausgebildeter Ringschulter
DE19652719A1 (de) * 1996-12-18 1998-06-25 Daimler Benz Ag Vorrichtung zur Bestimmung der Öffnungs- und Schließzeitpunkte eines Ventils
AU2001210652A1 (en) * 2000-08-21 2002-03-04 Volvo Lastvagnar Ab Needle position sensing device
DE102004015745A1 (de) * 2004-03-31 2005-10-13 Robert Bosch Gmbh Einrichtung zum Einspritzen von Kraftstoff in den Brennraum einer Brennkraftmaschine mit einem Nadelhubsensor
US7497203B2 (en) * 2005-08-03 2009-03-03 Caterpillar Inc. Avoidance of spark damage on valve members
GB2547684A (en) * 2016-02-26 2017-08-30 Delphi Int Operations Luxembourg Sarl Fuel injector for a combustion engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU182356A1 (ru) * 1964-06-11 1966-07-13 М. Г. Сандомирский Способ определения начала открытия клапана
US3942366A (en) * 1973-02-02 1976-03-09 Robert Bosch Gmbh Fuel injection arrangement
US4066059A (en) * 1976-01-02 1978-01-03 Texaco Inc. Fuel injection nozzle valve and ignition system
DE2748447A1 (de) * 1976-11-08 1978-05-11 Gen Motors Corp Zuendanlage fuer fremdgezuendete einspritz-brennkraftmaschinen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3361353A (en) * 1965-10-20 1968-01-02 Mitchell W. Millman Method and apparatus for injection of liquid fuels
GB1586254A (en) * 1977-06-22 1981-03-18 Lucas Industries Ltd Fuel injection nozzle unit for supplying fuel to an internal combustion engine
US4231525A (en) * 1979-05-10 1980-11-04 General Motors Corporation Electromagnetic fuel injector with selectively hardened armature

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU182356A1 (ru) * 1964-06-11 1966-07-13 М. Г. Сандомирский Способ определения начала открытия клапана
US3942366A (en) * 1973-02-02 1976-03-09 Robert Bosch Gmbh Fuel injection arrangement
US4066059A (en) * 1976-01-02 1978-01-03 Texaco Inc. Fuel injection nozzle valve and ignition system
DE2748447A1 (de) * 1976-11-08 1978-05-11 Gen Motors Corp Zuendanlage fuer fremdgezuendete einspritz-brennkraftmaschinen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0101822B1 (fr) * 1982-08-05 1987-10-28 Robert Bosch Gmbh Buse d'injection de carburant pour moteurs à combustion interne
GB2153907A (en) * 1983-12-14 1985-08-29 Diesel Kiki Co Solenoid valve constituting an on-off switch
GB2154658A (en) * 1984-02-28 1985-09-11 Diesel Kiki Co Valve unit including a switch
WO1992005363A1 (fr) * 1990-09-18 1992-04-02 Lucas Industries Public Limited Company Gicleurs d'injection de carburant
WO2005010335A2 (fr) * 2003-07-23 2005-02-03 Siemens Aktiengesellschaft Circuit et procede pour faire fonctionner un systeme d'injection et injecteur
WO2005010335A3 (fr) * 2003-07-23 2005-06-09 Siemens Ag Circuit et procede pour faire fonctionner un systeme d'injection et injecteur
WO2005080786A1 (fr) * 2004-02-11 2005-09-01 Siemens Aktiengesellschaft Element de contact pour le pointeau de la soupape d'un injecteur de moteurs a combustion interne

Also Published As

Publication number Publication date
DE2925187A1 (de) 1981-01-08
DE3065240D1 (en) 1983-11-17
JPH037572Y2 (fr) 1991-02-25
JPH02131073U (fr) 1990-10-30
US4340181A (en) 1982-07-20
EP0020888B1 (fr) 1983-10-12
JPS566063A (en) 1981-01-22

Similar Documents

Publication Publication Date Title
EP0020888A1 (fr) Injecteur de combustible pour moteurs à combustion interne
EP0045530B1 (fr) Soupape injectrice de combustible pour moteurs à combustion
DE2932480C2 (fr)
DE3143848A1 (de) Elektromagnetisch betaetigbares ventil, insbesondere kraftstoffeinspritzventil
DE3507441A1 (de) Elektromagnetisch betaetigbares kraftstoffeinspritzventil und verfahren zu seiner herstellung
DE3143849A1 (de) Elektromagnetisch betaetigbares ventil, insbesondere kraftstoffeinspritzventil
DE2922503A1 (de) Kraftstoffeinspritzeinrichtung
WO1997017539A1 (fr) Soupape d'injection de carburant pour moteurs a combustion interne
EP1423603A1 (fr) Soupape d'injection de carburant
DE3004424C2 (fr)
EP0068339B1 (fr) Buse d'injection de carburant pour moteurs à combustion interne
EP1350025A1 (fr) Liaison entre un induit et un pointeau de soupape d'une soupape d'injection de carburant
DE3724545A1 (de) Kraftstoff-einspritzduese fuer brennkraftmaschinen
EP0204722A1 (fr) Dispositif d'injection de carburant dans la chambre de combustion d'un moteur a combustion interne.
EP0294586B1 (fr) Buse d'injection de combustible pour moteurs à combustion interne
DE3220090A1 (de) Vorrichtung zur elektrischen kontaktierung eines elektromagnetisch betaetigbaren kraftstoffeinspritzventiles
DE3522225A1 (de) Kraftstoffeinspritzventil mit ausgleichsfeder
EP0042915B1 (fr) Soupape d'injecteur de combustible pour moteur à combustion
EP1328722A1 (fr) Soupape d'injection de carburant
DE19735232A1 (de) Verfahren zur Dämpfung eines Brennstoffeinspritzventiles und Brennstoffeinspritzventil
DE3705587A1 (de) Elektromagnetisch betaetigtes ventil, insbesondere kraftstoffeinspritzventil
WO2002031352A2 (fr) Soupape d'injection de carburant
DE2949705A1 (de) Kraftstoffeinspritzduese fuer brennkraftmaschinen
DE2939274A1 (de) Kraftstoff-einspritzduese von brennkraftmaschinen
EP2299101B1 (fr) Soupape magnétique dotée d'une unité de commande contactée directement

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19800403

AK Designated contracting states

Designated state(s): DE FR GB IT SE

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB IT SE

REF Corresponds to:

Ref document number: 3065240

Country of ref document: DE

Date of ref document: 19831117

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19900331

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19900419

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19900426

Year of fee payment: 11

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19900626

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19910403

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19910404

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19910426

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19920201

EUG Se: european patent has lapsed

Ref document number: 80101801.1

Effective date: 19911108