EP0014342B1 - Soupape à siège plat pour installation d'injection de carburant - Google Patents

Soupape à siège plat pour installation d'injection de carburant Download PDF

Info

Publication number
EP0014342B1
EP0014342B1 EP19800100188 EP80100188A EP0014342B1 EP 0014342 B1 EP0014342 B1 EP 0014342B1 EP 19800100188 EP19800100188 EP 19800100188 EP 80100188 A EP80100188 A EP 80100188A EP 0014342 B1 EP0014342 B1 EP 0014342B1
Authority
EP
European Patent Office
Prior art keywords
spring
valve
diaphragm
flat
bore
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
EP19800100188
Other languages
German (de)
English (en)
Other versions
EP0014342A1 (fr
Inventor
Johannes Steinwart
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.)
Audi AG
Original Assignee
Audi NSU Auto Union AG
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 Audi NSU Auto Union AG filed Critical Audi NSU Auto Union AG
Publication of EP0014342A1 publication Critical patent/EP0014342A1/fr
Application granted granted Critical
Publication of EP0014342B1 publication Critical patent/EP0014342B1/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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/52—Arrangement of fuel metering devices

Definitions

  • the invention relates to a flat seat valve for a fuel injection system according to the preamble of the claim.
  • a valve element which interacts with the valve seat and on which the spring is supported is fitted in the center of the membrane.
  • the other end of the spring itself is loosely received in the bore of the screw plug.
  • a disadvantage of this embodiment is that the attachment of the valve element to the membrane is difficult and can result in a deformation of the membrane, which results in a metering error of 8 to 8 with low fuel quantities, in particular in the idling and in the lower part-load range 10% can lead.
  • the spring is a loose item that can easily be lost during assembly.
  • the invention has for its object to provide a flat seat valve of the type mentioned, which is characterized by a simpler structure and easier assembly.
  • the inventive design of the flat seat valve ensures that the diaphragm can be produced without openings for the attachment of a valve element and also does not itself carry a valve element, which simplifies production, prevents deformation of the diaphragm and, due to the lack of a valve element connected to the diaphragm, the weight the membrane is reduced and its sensitivity is increased.
  • the pot-like body offers a sufficient contact area to keep the surface pressure to an acceptable level. Because the ends of the spring are fixed on the one hand in the pot-like body and on the other hand in the screw plug, these three parts form an assembly unit, which simplifies assembly.
  • the arrangement of the end of the spring facing the membrane in the pot-like body has the further advantage that a buckling of the spring, which could occur if the spring has to be made relatively long for constructional reasons, by guiding the pot-like body in the Screw plug-receiving bore in the valve housing is avoided.
  • the flat seat valve has a housing 1, which is composed of two housing parts 2 and 3, which have two flat surfaces 4 and 5 facing each other.
  • a first valve chamber 6 is arranged in the housing part 2 and a second valve chamber 7 is arranged in the housing part 3.
  • the two valve chambers are separated from one another by a metal membrane 8, which is clamped between the flat surfaces 4 and 5.
  • a valve seat body 9 projects into the valve chamber 6, the lower end of which forms a valve seat 10 which lies in one plane with the flat surface 4.
  • An inner bore 11 extends from the valve seat 10 and leads to an injection nozzle.
  • a line 12 opens into the first valve chamber 6, through which a measured amount of fuel is supplied.
  • the second valve chamber 7 is connected to a channel 13 through which fuel is supplied to the second valve chamber 7 at a certain pressure.
  • the membrane 8 is under the action of a spring 14 which is inserted into a bore 15 in a screw plug 16 and abuts the membrane 8 over a large area via a pot-like body 17 and presses it onto the valve seat 10.
  • the screw plug 16 is screwed into a threaded bore 18 in the housing part 3. It has a collar 19 with a circumferential groove 20 into which an O-ring 21 is inserted, through which the threaded plug 16 is sealed off from the threaded bore 18.
  • the housing parts 2 and 3 are screwed together by screws 22.
  • the ends of the spring 14 are held in the bore 15 of the screw plug 16 and in the pot-like body 17 by thread-like projections 23 and 24, respectively.

Landscapes

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

Claims (1)

  1. Soupape à siège plat pour une installation d'injection de carburant avec une membrane en métal (8) comme pièce mobile de soupape, qui est tendue entre deux surfaces planes (4, 5) d'un boîtier de soupape, et qui agit avec un siège central de soupape d'un corps (9) de siège de soupape, et avec un ressort (14) agissant sur la membrane, qui s'appuie sur un presse-étoupe (16), qui est vissé, en pouvant être réglé, dans un alésage fileté du boîtier de soupape et présente un alésage (15) pour recevoir l'extrémité du ressort qui est éloigné de la membrane (8), caractérisé en ce que le ressort (14) est disposé, par son extrémité tournée vers la membrane (8), dans un corps (17) de forme cylindrique, qui s'appuie sur la membrane, et en ce que ce corps de forme cylindrique (17) ainsi que l'alésage (15) du presse-étoupe (16) recevant l'autre extrémité du ressort (14) sont pourvus de saillies (23 et respectivement 24) formant des filetages, pour le maintien des extrémités du ressort.
EP19800100188 1979-02-07 1980-01-16 Soupape à siège plat pour installation d'injection de carburant Expired EP0014342B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2904496 1979-02-07
DE19792904496 DE2904496A1 (de) 1979-02-07 1979-02-07 Flachsitzventil fuer eine kraftstoff- einspritzanlage

Publications (2)

Publication Number Publication Date
EP0014342A1 EP0014342A1 (fr) 1980-08-20
EP0014342B1 true EP0014342B1 (fr) 1983-08-31

Family

ID=6062307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800100188 Expired EP0014342B1 (fr) 1979-02-07 1980-01-16 Soupape à siège plat pour installation d'injection de carburant

Country Status (3)

Country Link
EP (1) EP0014342B1 (fr)
JP (1) JPS55134750A (fr)
DE (1) DE2904496A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8753066V0 (it) * 1987-02-25 1987-02-25 Zorzi Esterina Dispositivo equilibratore di pressione e o di sicurezza per sistemi fluidici particolarmente per pneumatici di autoveicoli

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2062078C3 (de) * 1970-12-17 1978-04-06 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzanlage für gemischverdichtende fremdgezündete Brennkraftmaschinen
BE759701A (fr) * 1969-12-02 1971-05-17 Petrol Injection Ltd Injecteur de combustible
DE2327588C3 (de) * 1973-05-30 1975-11-20 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zur kontinuierlichen Kraftstoffeinspritzung in die Ansaugluftleitung einer gemischverdichtenden Brennkraftmaschine
DE2344723A1 (de) * 1973-09-05 1975-03-06 Bosch Gmbh Robert Kontinuierlich arbeitende kraftstoffeinspritzanlage
DE2348859A1 (de) * 1973-09-28 1975-04-10 Bosch Gmbh Robert Kraftstoffeinspritzanlage
DE2412808A1 (de) * 1974-03-16 1975-09-25 Bosch Gmbh Robert Kraftstoffeinspritzanlage

Also Published As

Publication number Publication date
JPS55134750A (en) 1980-10-20
DE2904496A1 (de) 1980-08-21
EP0014342A1 (fr) 1980-08-20

Similar Documents

Publication Publication Date Title
DE19649554B4 (de) Membrandruckregelventilanordnung
DE19823160A1 (de) Ventildichtungsmechanismus
DE1291451B (de) Mischvorrichtung zur Erzeugung von Heisswasser
DE4010173A1 (de) Druckregelventil, insbesondere fuer kraftstoffeinspritzsysteme
EP0047848B1 (fr) Soupape de régulation de pression
DE2606199A1 (de) Schaltventil fuer blockierschutzanlagen von kraftfahrzeugen
DE3338242A1 (de) Kulissengetriebe
EP0699859B1 (fr) Electrovanne de commande
EP0014342B1 (fr) Soupape à siège plat pour installation d'injection de carburant
DE3435248A1 (de) Daempfungselement zum daempfen von druckschwingungen in kraftstoffleitungen
DE2339370A1 (de) Kraftstoffeinspritzanlage
EP0289712B1 (fr) Régulateur de pression
DE2354461A1 (de) Membrangesteuertes druckregelventil
EP0222858A1 (fr) Sectionneur de tuyau.
DE1708088C3 (de) Steuereinrichtung fur Zusatzluft
DE2208841A1 (de) Federbelastetes rueckschlagventil
DE2532668A1 (de) Zwei- oder mehrstufiges druckservoventil
DE2256208A1 (de) Drucksteuerventil fuer hydraulikanlagen
DE1455852A1 (de) Druckregler fuer hydraulische Bremsen
DE3226409A1 (de) Ventil fuer gasfoermige und/oder fluessige stroemungsmittel
DE2538639C2 (fr)
DE4430723A1 (de) Elektromagnetisches Schaltventil
DE4435703A1 (de) Saugstrahlpumpe und ihre Verwendung
DE2448251C3 (de) Pneumatischer Verstärker
AT391540B (de) Dosiereinrichtung fuer schmiermittel

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

AK Designated contracting states

Designated state(s): FR GB SE

17P Request for examination filed

Effective date: 19801218

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): FR GB SE

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19831231

Year of fee payment: 5

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

Ref country code: FR

Payment date: 19840106

Year of fee payment: 5

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

Ref country code: SE

Effective date: 19860117

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: FR

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

Effective date: 19860930

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: GB

Effective date: 19881118

EUG Se: european patent has lapsed

Ref document number: 80100188.4

Effective date: 19861023