EP0713968B1 - 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

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Publication number
EP0713968B1
EP0713968B1 EP95115187A EP95115187A EP0713968B1 EP 0713968 B1 EP0713968 B1 EP 0713968B1 EP 95115187 A EP95115187 A EP 95115187A EP 95115187 A EP95115187 A EP 95115187A EP 0713968 B1 EP0713968 B1 EP 0713968B1
Authority
EP
European Patent Office
Prior art keywords
fuel
injection
line
collecting space
injection line
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 - Lifetime
Application number
EP95115187A
Other languages
German (de)
English (en)
Other versions
EP0713968A1 (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

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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
    • 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 to a fuel feed line via a line section.
  • 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 pass 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 opens into the fuel feed line in the manner of a suction jet pump. Advantageous training and further training are included in the subclaims.
  • a fuel injection bar designated in its entirety by 1 supplies several fuel injectors as usual 2 a mixture-compressing internal combustion engine. This is via a fuel feed line 3 Injection bar 1 fuel supplied, one earlier still common return line is the one described here Injection bar 1 not provided.
  • the injection bar is installed to remedy this problem 1 with a collecting space 4 for fuel vapor bubbles in connection.
  • this collecting space 4 which is preferably geodetic lies above the injection bar 1, will Separate the resulting fuel vapor bubbles automatically.
  • the vapor bubbles can directly over the suction jet-like line section be dissipated, but actually these vapor bubbles largely through the ability of the fuel to both air and evaporated fuel up to absorb to some extent, degraded. Because about that Injection bar 1 always fresh fuel in the Arrives in collecting space 4, there is a relatively large transition area between the vapor bubbles as well as the liquid Fuel so that the vapor bubbles are largely absorbed can be.
  • EP 0 593 053 A1 is used in the present injection molding thus no gaseous fuel is drawn off, but liquid fuel saturated with vapor bubbles. The gas components in this are liquid, with vapor bubbles saturated fuel so low that no combustion problems may occur.
  • the collecting space 4 is in the essentially geodesically above the actual, the Injection valves 2 supplying injection rail section, to make sure that the vapor bubbles are due to their lower specific weight too actually get into this collecting space 4.
  • the collecting space 4 While at 1 the collecting space 4 as a separate one Volume in the supply line 3 opposite End region of the injection bar 1 is formed 2, the collecting space 4 structurally summarized with the injection bar 1. Only a partition provided with through openings 8 9 separates the collecting space 4 from the so-called supply section la.
  • the passage openings 8 are located in the partition 9 essentially directly above the branch points of the individual injection valves 2, however, this can as well further details, especially of a constructive nature designed differently from the exemplary embodiments shown be without leaving the content of the claims.

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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 (4)

  1. Rail d'injection de carburant d'un moteur à combustion interne, pour système d'alimentation en carburant sans circuit de retour, dans lequel le rail d'injection (1) qui alimente en carburant les injecteurs (2) est relié à un espace collecteur (4) des bulles de vapeur de carburant, situé au dessus de lui et également à une canalisation d'amenée de carburant (3), par une section de conduite (5),
    caractérisé en ce que
    la section de conduite (5) débouche dans la canalisation d'amenée (3) à la manière d'un jet pompé par aspiration, afin de ramener ainsi au rail d'injection (1) les bulles de vapeur de carburant se trouvant dans le collecteur (1).
  2. Rail selon la revendication 1,
    caractérisé en ce que
    la section de conduite (5) est équipée d'une buse de dosage (6).
  3. Rail selon la revendication 1 ou 2,
    caractérisé en ce qu'
    il est prévu dans la canalisation d'amenée (3), en aval du point où débouche la section de conduite (5), une grille de pulvérisation (7).
  4. Rail selon l'une des revendications précédentes,
    caractérisé en ce que
    le collecteur (4) est réuni par construction, au rail d'injection (1), une paroi séparatrice (9) percée de trous de passage (8) séparant le collecteur de la partie (1a) du rail alimentant les injecteurs (2) montés en dérivation.
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 EP0713968A1 (fr) 1996-05-29
EP0713968B1 true 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003012274A1 (fr) 2001-07-31 2003-02-13 Volkswagen Aktiengesellschaft Circuiterie et procede pour la regulation d'une pompe electrique d'alimentation en carburant dans un systeme d'alimentation en carburant sans retour

Family Cites Families (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
US4601275A (en) * 1982-08-23 1986-07-22 General Motors Corporation Fuel rail
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
DE4030490C2 (de) * 1989-09-29 1999-02-04 Denso Corp Vorrichtung zur Kraftstoffzufuhr in einer Mehrzylinder-Brennkraftmaschine
DE4115039A1 (de) * 1991-05-08 1992-11-12 Bosch Gmbh Robert Brennstoffverteiler
JP2812102B2 (ja) 1992-10-15 1998-10-22 株式会社デンソー 内燃機関の燃料供給装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003012274A1 (fr) 2001-07-31 2003-02-13 Volkswagen Aktiengesellschaft Circuiterie et procede pour la regulation d'une pompe electrique d'alimentation en carburant dans un systeme d'alimentation en carburant sans retour

Also Published As

Publication number Publication date
EP0713968A1 (fr) 1996-05-29
DE59504683D1 (de) 1999-02-11
ES2126827T3 (es) 1999-04-01

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