EP0713968A1 - Rail d'injection de combustible avec espace collecteur de bulles de vapeur - Google Patents

Rail d'injection de combustible avec espace collecteur de bulles de vapeur Download PDF

Info

Publication number
EP0713968A1
EP0713968A1 EP95115187A EP95115187A EP0713968A1 EP 0713968 A1 EP0713968 A1 EP 0713968A1 EP 95115187 A EP95115187 A EP 95115187A EP 95115187 A EP95115187 A EP 95115187A EP 0713968 A1 EP0713968 A1 EP 0713968A1
Authority
EP
European Patent Office
Prior art keywords
fuel
injection
collecting space
line
rack
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
EP95115187A
Other languages
German (de)
English (en)
Other versions
EP0713968B1 (fr
Inventor
Albin Bergmann
Robert Mahler
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0713968A1 publication Critical patent/EP0713968A1/fr
Application granted granted Critical
Publication of EP0713968B1 publication Critical patent/EP0713968B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails

Definitions

  • the invention relates to a fuel injection rail of an internal combustion engine, which is connected to a collecting space for fuel vapor bubbles, which is connected via a line section to a fuel supply line.
  • a fuel injection rail for a return-free fuel supply system in particular a mixture-compressing internal combustion engine
  • EP 0 593 053 A1 is known from EP 0 593 053 A1.
  • the vapor bubbles are to get into the collecting space via the line section branching off from the fuel supply line and are later to be fed again in small doses to the injection valves branching off from the injection rail via the other connection between the collecting space and the injection rail.
  • the invention Since in this known device, in particular, the removal of the fuel vapor bubbles accumulated in the collecting space has proven to be problematic, the invention has set itself the task of showing improvements in this regard. To solve this problem it is provided that the line section branching off from the collecting space is like an ejector pump opens into the fuel supply line. Advantageous training and further education are included in the subclaims.
  • a fuel injection bar designated as a whole by 1, supplies, as usual, a plurality of fuel injection valves 2 of a mixture-compressing internal combustion engine. Fuel is supplied to this injection bar 1 via a fuel feed line 3; a return line which was still customary in the past is not provided in the injection bar 1 described here.
  • the injection bar 1 is connected to a collecting space 4 for fuel vapor bubbles.
  • this collecting space 4 which is preferably geodetically located above the injection bar 1, the fuel vapor bubbles which are formed will separate out automatically.
  • the collecting space 4 can thus be emptied continuously in an elegant manner, with the result that the fuel located in the collecting space - Steam bubbles can be dissolved and removed.
  • the vapor bubbles can be removed directly via the line section designed in the manner of a suction jet pump, but in fact these vapor bubbles are largely broken down by the ability of the fuel to absorb both air and evaporated fuel to a certain degree. Since fresh fuel always reaches the collecting space 4 via the injection bar 1, there is a relatively large transition area between the vapor bubbles and the liquid fuel, so that the vapor bubbles can be largely absorbed.
  • no gaseous fuel is drawn off in the present injection rail, but rather liquid fuel saturated with vapor bubbles. The gas components in this liquid fuel, which is saturated with vapor bubbles, are so low that no combustion problems can occur.
  • the inlet openings of the injection valves 2 are geodetically as deep as possible with respect to the injection bar 1, in order to prevent direct suction of vapor bubbles and the associated mixture formation or combustion problems.
  • a suitably dimensioned metering nozzle 6 can be provided in the line section 5. Furthermore, an atomizing grille 7 can be provided in the feed line 3 downstream of the mouth of the line section 5, on which possibly entrained vapor bubbles which have been removed from the collecting space 4 are comminuted or dissolved. This atomizing grille 7 thus prevents, when the internal combustion engine is running, that impermissibly large steam bubbles can get into the injection valves 2.
  • the collecting space 4 is located essentially geodetically above the actual injection bar section that supplies the injection valves 2, in order to ensure that the vapor bubbles actually do because of their lower specific weight get into this collecting room 4.
  • the collecting space 4 is designed as a separate volume in the end region of the injection strip 1 opposite the inlet line 3, in the exemplary embodiment according to FIG. 2 the collecting space 4 is structurally combined with the injection strip 1. Only a partition 9 provided with through openings 8 separates the collecting space 4 from the so-called supply section 1a.
  • the passage openings 8 are located in the partition 9 substantially directly above the branch points of the individual injection valves 2, however this and other details, in particular of a constructive nature, can be designed quite differently from the exemplary embodiments shown, without leaving the content of the patent claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP95115187A 1994-11-24 1995-09-27 Rail d'injection de combustible avec espace collecteur de bulles de vapeur Expired - Lifetime EP0713968B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4441858 1994-11-24
DE4441858 1994-11-24

Publications (2)

Publication Number Publication Date
EP0713968A1 true EP0713968A1 (fr) 1996-05-29
EP0713968B1 EP0713968B1 (fr) 1998-12-30

Family

ID=6534055

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95115187A Expired - Lifetime EP0713968B1 (fr) 1994-11-24 1995-09-27 Rail d'injection de combustible avec espace collecteur de bulles de vapeur

Country Status (3)

Country Link
EP (1) EP0713968B1 (fr)
DE (1) DE59504683D1 (fr)
ES (1) ES2126827T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10137315A1 (de) 2001-07-31 2003-02-20 Volkswagen Ag Schaltungsanordnung und Verfahren zur Regelung einer elektrischen Kraftstoffpumpe in einem rücklauffreien Kraftstoff-Fördersystem

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3132432A1 (de) * 1981-08-17 1983-02-24 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzanlage
DE3326408A1 (de) * 1982-08-23 1984-02-23 General Motors Corp., Detroit, Mich. Montagegestell fuer kraftstoffeinspritzeinrichtungen von brennkraftmaschinen
US4732131A (en) * 1986-08-26 1988-03-22 Brunswick Corporation Fuel line purging device
US4966120A (en) * 1987-07-29 1990-10-30 Aisan Kogyo Kabushiki Kaisha Fuel injection system assembly
DE4030490A1 (de) * 1989-09-29 1991-04-11 Nippon Denso Co Vorrichtung zur kraftstoffzufuhr bei einer mehrzylinder-brennkraftmaschine
EP0512235A1 (fr) * 1991-05-08 1992-11-11 Robert Bosch Gmbh Distributeur de combustible
EP0593053A1 (fr) 1992-10-15 1994-04-20 Nippondenso Co., Ltd. Système d'alimentation en combustible pour moteurs à combustion interne

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3132432A1 (de) * 1981-08-17 1983-02-24 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzanlage
DE3326408A1 (de) * 1982-08-23 1984-02-23 General Motors Corp., Detroit, Mich. Montagegestell fuer kraftstoffeinspritzeinrichtungen von brennkraftmaschinen
US4732131A (en) * 1986-08-26 1988-03-22 Brunswick Corporation Fuel line purging device
US4966120A (en) * 1987-07-29 1990-10-30 Aisan Kogyo Kabushiki Kaisha Fuel injection system assembly
DE4030490A1 (de) * 1989-09-29 1991-04-11 Nippon Denso Co Vorrichtung zur kraftstoffzufuhr bei einer mehrzylinder-brennkraftmaschine
EP0512235A1 (fr) * 1991-05-08 1992-11-11 Robert Bosch Gmbh Distributeur de combustible
EP0593053A1 (fr) 1992-10-15 1994-04-20 Nippondenso Co., Ltd. Système d'alimentation en combustible pour moteurs à combustion interne

Also Published As

Publication number Publication date
DE59504683D1 (de) 1999-02-11
ES2126827T3 (es) 1999-04-01
EP0713968B1 (fr) 1998-12-30

Similar Documents

Publication Publication Date Title
DE102004003242A1 (de) Satteltank mit Kraftstoffversorgungsvorrichtung
DE3323892C2 (de) Vorrichtung zum Dosieren und Einspritzen einer kleinen Flüssigkeitsmenge in die Spleißluft einer Druckluft-Fadenspleißvorrichtung
DE69609311T2 (de) Entgasungsvorrichtung für tankstellen
DE2819474A1 (de) Treibstoff-versorgungseinrichtung fuer verbrennungsmotoren
DE2507262A1 (de) Narkosemittelverdunster
EP0713968B1 (fr) Rail d'injection de combustible avec espace collecteur de bulles de vapeur
DE19519885B4 (de) Vorrichtung zur Erzeugung eines Kühlschmierstoff-Aerosols
EP0916836A2 (fr) Dispositif d'admission de vapeur à l'air d'admission d'un moteur à combustion
DE3244168C2 (de) Dampfverteiler, insbesondere für Luftbefeuchtungsanlagen
DE804142C (de) Vorrichtung zur Entgasung eines fluessigen Brennstoffs, der einem Vergaser o. dgl. mit einem durch UEberlauf konstant gehaltenen Niveau geliefert wird
DE2460214A1 (de) Verfahren und vorrichtung zur aufteilung eines stroemenden fluessigkeits- gas-gemisches in mehrere teilstroeme
DE664505C (de) Vergaser fuer Brennkraftmaschinen
DE1526671A1 (de) Brennstoff-Ekonomiser und Auspuffgasreiniger
EP0814254B1 (fr) Procédé et dispositif de mélange des additifs dans un ecoulement de fluide
DE2612255A1 (de) Verfahren und anlage zur reinigung von abwasser nach dem belebtschlammverfahren
DE2245082A1 (de) Verfahren und vorrichtung zum mischen von mehrkomponenten-kunststoffen, insbesondere polyurethan
DE720533C (de) Spritzvergaser, dessen Spritzduese in ein Zerstaeuberrohr muendet
DE499190C (de) Spritzvergaser mit Luftdrossel und Schwimmerkammerregelung
DE2536817C3 (de) Flüssigkeitsfalle und -sammler, insbesondere zum Schutz des Kompressors in einer Kühlanlage
DE2938363A1 (de) Vorrichtung zur wetterkuehlung mit integriertem vorentstauber
DE2139766A1 (fr)
DE68902031T2 (de) Zerstaeubungsduese fuer vergaser einer gemischverdichtenden brennkraftmaschine.
AT267265B (de) Einrichtung zur Bildung eines Flüssigkeitsnebels in einem Gasstrom, insbesondere für die Schmierung von Druckluftgeräten
DE453444C (de) Brennstoffvernebler fuer Vergasermaschinen
DE563016C (de) Spritzvergaser

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

Kind code of ref document: A1

Designated state(s): DE ES FR GB IT

17P Request for examination filed

Effective date: 19960618

17Q First examination report despatched

Effective date: 19971106

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19981231

REF Corresponds to:

Ref document number: 59504683

Country of ref document: DE

Date of ref document: 19990211

ET Fr: translation filed
ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2126827

Country of ref document: ES

Kind code of ref document: T3

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
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: DE

Payment date: 20071025

Year of fee payment: 13

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

Ref country code: ES

Payment date: 20080828

Year of fee payment: 14

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

Ref country code: GB

Payment date: 20080925

Year of fee payment: 14

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

Ref country code: IT

Payment date: 20080926

Year of fee payment: 14

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

Ref country code: FR

Payment date: 20080929

Year of fee payment: 14

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

Ref country code: DE

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

Effective date: 20090401

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20090927

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20100531

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: 20090930

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

Ref country code: GB

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

Effective date: 20090927

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

Ref country code: IT

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

Effective date: 20090927

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20110715

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

Ref country code: ES

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

Effective date: 20110705

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

Ref country code: ES

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

Effective date: 20090928