EP0814254B1 - Procédé et dispositif de mélange des additifs dans un ecoulement de fluide - Google Patents

Procédé et dispositif de mélange des additifs dans un ecoulement de fluide Download PDF

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Publication number
EP0814254B1
EP0814254B1 EP97109752A EP97109752A EP0814254B1 EP 0814254 B1 EP0814254 B1 EP 0814254B1 EP 97109752 A EP97109752 A EP 97109752A EP 97109752 A EP97109752 A EP 97109752A EP 0814254 B1 EP0814254 B1 EP 0814254B1
Authority
EP
European Patent Office
Prior art keywords
fuel
cross
area
mouth
connection duct
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
EP97109752A
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German (de)
English (en)
Other versions
EP0814254A1 (fr
Inventor
Reinhard Dipl.-Ing. Regele
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.)
REGELE REINHARD DIPL ING
Original Assignee
REGELE REINHARD DIPL ING
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Filing date
Publication date
Application filed by REGELE REINHARD DIPL ING filed Critical REGELE REINHARD DIPL ING
Publication of EP0814254A1 publication Critical patent/EP0814254A1/fr
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Publication of EP0814254B1 publication Critical patent/EP0814254B1/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
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • 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
    • F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/08—Preparation of fuel
    • F23K5/10—Mixing with other fluids
    • F23K5/12—Preparing emulsions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/503—Mixing fuel or propellant and water or gas, e.g. air, or other fluids, e.g. liquid additives to obtain fluid fuel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying

Definitions

  • the invention relates to a method for admixing a Additive to a fluid made by a feed pump is fed to a reservoir of an injection pump, which atomizes the fluid through fine nozzles into a combustion chamber.
  • the invention further relates to a device for performing of the process for sucking in and admixing additives into a fluid flow by means of a connector, one through channel for the fluid and one related connection channel for the additive has, the additive by one of the Fluid flow generated vacuum is sucked.
  • the present invention is based on the object to create a method and a device for injection systems, especially diesel injection systems, where by fine nozzles the fluid is atomized under high pressure, one to create usable and effective mixing device.
  • the invention is based on the idea foaming by adding air to the fuel to achieve, which significantly improves the combustion is while reducing pollutant emissions. This advantage is particularly evident in the lower speed range, which prevents soot formation.
  • the feeder the air comes through a mixing device in the intake area the fuel delivery pump is arranged. This will the problems encountered in the prior art avoided and achieves a high suction power for the substance to be mixed.
  • the foamed Fuel easily in injection pumps, in particular Diesel injection pumps, can compress.
  • DE-35 08 577 A1 is the addition of water or other additional liquids with and without additives for Fuel for gasoline and diesel engines in load-dependent variables Quantities just before the injection pump to reduce the Known emission values and fuel consumption.
  • FIG 1 is the injection system for a diesel internal combustion engine shown. Via a feed pump 2 Diesel fuel sucked from the container 1 and over the Fuel filter 3 of the injection pump 4 supplied. The one from the Injection pump 4 diesel fuel not required is over the fuel return line 64 is returned to the tank. The Injection pump 4 injects the diesel fuel in a very metered manner high pressure and with the greatest possible precision via the injection nozzle 7 in the combustion chamber 8 of the internal combustion engine. Depending on the load and speed of the diesel internal combustion engine the injection quantity and also the start of injection without Throttling of the intake air determined. It is known that at Load in the lower speed range as a result of being too rich Fuel / air mixture there is an imperfect combustion, which leads to soot and smoke formation. This is where the invention comes in one by adding air to the fuel, before it is injected. For this purpose it is in the intake area the feed pump 2 a mixing device 5 in the Fuel line 6 inserted.
  • the mixing device 5 is shown in detail in FIG. 2, into which the fuel line 6 opens.
  • a constriction 51 with a cross-sectional area F D is provided in the through-channel for the fuel within the mixing device 5. Following this constriction 51 there is an expansion of the line cross section in the suction line 65, which leads to the feed pump 2.
  • a connection channel 52 opens out with a cross section F d .
  • a valve with the valve housing 53, the valve cone 54 and a valve spring 55 connects to the connection channel 52. The task of this valve is to prevent fuel from escaping through the connection channel 52 and the additive line 56.
  • the function of adding air to the fuel is the following:
  • the fuel feed pump 2 sucks fuel from the storage container 1 via the suction line 65 and the fuel line 6 and presses it via lines 61 and 62 to the injection pump 4.
  • the constriction 51 in the mixing device 5 accelerates the fuel and consequently a negative pressure is created , which affects the connection channel 52 and sucks air from there, which is supplied to the fuel through the orifice cross section F d , and precisely in the constriction 51 with the cross section F D.
  • the constriction 51 is designed in the manner of an aperture, ie the fuel line 6 narrows quite abruptly and widens in approximately the same way, as a result of which the fluid flow is swirled considerably.
  • the correct admixture of air to the fuel should always take place. If too much air is added to the fuel, the performance of the internal combustion engine drops. In particular in the case of injection pumps with pressure-dependent adjustment of the injection timing, an excessive supply of air in the fuel can lead to malfunctions of this injection timing control.
  • the ratio of the cross-sectional area F D of the fuel line 6 at the junction of the connecting channel 52 to the muzzle cross-sectional area F d of the connecting channel 52 should suitably be in a range from 100: 1 to 290: 1. With these conditions, optimal results are achieved.
  • the mouth cross-sectional area F d of the connecting channel 52 must not be too large, so that the smallest possible air bubbles arise.
  • the mouth cross-sectional area F d must be large enough to supply the required amount of air.
  • the opening cross-sectional area F d of the connecting channel 52 is 0.013 to 0.025 mm 2 . With such an opening cross-sectional area F d of the connecting channel 52, tiny bubbles are formed in diesel fuel, which lead to foaming. It may be that a different orifice cross-sectional area F d must be provided for fuels with a different viscosity. However, this can easily be determined by further experiments.
  • the opening cross-sectional area F d of the connecting channel 52 is only approximately 0.013 to 0.025 mm 2 in size, it may be that with a very large cross-sectional area F D of the fuel line 6, sufficient foaming is not achieved. As shown in FIG. 3, a plurality of orifice cross sections F d can therefore also be arranged on the constriction 51 of the fuel line 6, into which air is supplied through the connecting duct 52.
  • the cross-sectional area F D fuel line 6 at the mouth of the connecting channel 52 is determined by the generation of the necessary negative pressure for sucking in the air from the suction line 65. However, enough fuel must also be able to be conveyed through this cross section F D in order to also support the injection pump 4 To be able to supply maximum load of the internal combustion engine with the necessary fuel. In the usual fuel lines, which have a flow diameter of approximately 4 mm, a cross-sectional area F D in the region of the mouth of the connecting duct 52 with 2.5 to 3.8 mm has proven to be optimal. In the case of large engines, however, larger cross sections are necessary in order to be able to deliver the required amount of fuel.
  • each of these cross-sectional areas F D is assigned a mouth cross section F d of the connecting channel 52. In this way, the most favorable cross-sectional conditions can be maintained both for the mouth cross section F d of the connecting channel 52 and for the fuel line 6 at the constriction 51.

Landscapes

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

Claims (16)

  1. Procédé pour ajouter un additif à un fluide qui est alimenté à partir d'un réservoir, par une pompe d'alimentation, à une pompe d'injection qui vaporise le fluide dans une chambre de combustion par l'intermédiaire de tuyères fines, caractérisé en ce que l'additif est ajouté dans le domaine d'aspiration de la pompe (2) d'alimentation.
  2. Procédé selon la revendication 1, caractérisé en ce que le fluide est accéléré pour l'aspiration de l'additif.
  3. Procédé selon la revendication 2, caractérisé en ce qu'après l'accélération du fluide celui-ci est de nouveau ralenti à sa vitesse initiale.
  4. Procédé selon l'une ou plusieurs des revendications 1 à 3, caractérisé en ce que le fluide est moussé par l'addition d'air.
  5. Procédé selon l'une ou plusieurs des revendications 1 à 4, caractérisé en ce que le fluide est soumis à une précompression avant d'arriver dans la pompe (4) d'injection.
  6. Procédé selon l'une ou plusieurs des revendications 1 à 5 caractérisé en ce que le mélange de fluide alimenté mais pas consommé par la pompe (4) d'injection est reconduit dans le réservoir (1).
  7. Dispositif pour la mise en oeuvre du procédé selon l'une ou plusieurs des revendications 1 à 6, comportant un réservoir (1) à carburant, une pompe (2) d'alimentation de carburant, une pompe (4) d'injection pour injecter le carburant dans les chambres (8) de combustion d'une machine à combustion interne, les différentes unités étant reliées entre elles par une tuyauterie d'alimentation en carburant (6, 61, 62, 63, 65), ainsi qu'un tuyau (64) pour reconduire le carburant non consomme dans le réservoir (1), caractérisé en ce que dans le domaine d'aspiration de la pompe (4) d'alimentation de carburant dans le tuyau (6) d'alimentation en carburant il débouche un canal (52) de raccordement servant à l'introduction d'un additif dans le tuyau (6) d'alimentation en carburant.
  8. Dispositif selon la revendication 7, caractérisé en ce que le tuyau (6) d'alimentation en carburant présente un rétrécissement (51) à l'embouchure du canal (52) de raccordement.
  9. Dispositif selon la revendication 8, caractérisé en ce que la modification de la section (FD) de passage est réalisée brusquement par suite du rétrécissement (51).
  10. Dispositif selon l'une ou plusieurs des revendications 7 à 9, caractérisé en ce qu'après le rétrécissement (51) il y a de nouveau un élargissement.
  11. Dispositif selon les revendications 9 et 10, caractérisé en ce que le rétrécissement (51) est réalisé sous forme d'un diaphragme.
  12. Dispositif selon l'une ou plusieurs des revendications 7 à 11, caractérisé en ce que le rapport entre la surface de la section (FD) du tuyau (6) d'alimentation en carburant, à l'embouchure du canal (52) de raccordement, et la surface de la section du canal (52) de raccordement à l'embouchure (Fd) se situe entre 100 :1 et 290:1.
  13. Dispositif selon l'une ou plusieurs des revendications 7 à 12, caractérisé en ce que le canal (52) de raccordement présente plusieurs sections (Fd) d'embouchure.
  14. Dispositif selon la revendication 13, caractérisé en ce, que dans le domaine de l'embouchure du canal (52) de raccordement, le tuyau (6) d'alimentation en carburant est divisé en plusieurs surfaces (FD) de section, à chaque surface (FD) de section du tuyau (6) d'alimentation en carburant étant affectée une section (Fd) d'embouchure du canal (52) de raccordement.
  15. Dispositif selon l'une ou plusieurs des revendications 7 à 14, caractérisé en ce que la surface (Fd) de section d'embouchure du canal (52) de raccordement. est comprise entre 0,013 et 0,025 mm2.
  16. Dispositif selon l'une ou plusieurs des revendications 7 à 15, caractérisé en ce que la surface (FD) de section du tuyau (6) d'alimentation en carburant, dans le domaine d'une section (Fd) d'embouchure du canal (52) de raccordement, est comprise entre 2,5 et 3,8 mm2.
EP97109752A 1996-06-19 1997-06-16 Procédé et dispositif de mélange des additifs dans un ecoulement de fluide Expired - Lifetime EP0814254B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19624352A DE19624352C2 (de) 1996-06-19 1996-06-19 Verfahren und Vorrichtung zum Beimischen von Zusatzstoffen in eine Fluidströmung
DE19624352 1996-06-19

Publications (2)

Publication Number Publication Date
EP0814254A1 EP0814254A1 (fr) 1997-12-29
EP0814254B1 true EP0814254B1 (fr) 2001-08-16

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ID=7797305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97109752A Expired - Lifetime EP0814254B1 (fr) 1996-06-19 1997-06-16 Procédé et dispositif de mélange des additifs dans un ecoulement de fluide

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EP (1) EP0814254B1 (fr)
DE (2) DE19624352C2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI107829B (fi) * 1999-06-15 2001-10-15 Markku Juhani Palmu Laite kaasun imemiseksi ja sekoittamiseksi polttonesteen virtaukseen
JP3743281B2 (ja) * 2000-11-29 2006-02-08 トヨタ自動車株式会社 内燃機関の燃料供給装置
DE10133357C1 (de) * 2001-07-13 2003-03-13 Mtu Friedrichshafen Gmbh Steuer- und Regelverfahren für eine Brennkraftmaschine
DE10229483A1 (de) * 2002-07-01 2004-03-04 Volkswagen Ag Dosiereinrichtung und Verfahren zum Zuführen von Additiv zu einem Kraftstoff

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6033992B2 (ja) * 1981-02-14 1985-08-06 工業技術院長 デイ−ゼルエンジンの燃料供給方法及び装置
DE3205297C2 (de) * 1982-02-15 1987-02-26 INTERATOM GmbH, 5060 Bergisch Gladbach Vorrichtung zum Vermischen zweier Fluide stark unterschiedlicher Temperaturen
FR2530967B1 (fr) * 1982-07-28 1986-08-01 Vallet Jacques Dispositif de production d'emulsion
DE3508577A1 (de) * 1985-02-12 1986-11-06 Raimund 6729 Wörth Winkler Beimischung von zusatzfluessigkeiten zum kraftstoff bei otto- und dieselmotoren zur verminderung der emissionswerte
JPS6345456A (ja) * 1986-08-12 1988-02-26 Yanmar Diesel Engine Co Ltd 気液混合燃料の噴射装置
DE3930709A1 (de) * 1989-09-14 1990-01-18 Kurt Tonk Vorrichtung zum ansaugen von zusatzstoffen in eine fluessigkeitsstroemung
DE4128006A1 (de) * 1991-08-23 1993-02-25 Kurt Tonk Vorrichtung zum ansaugen von zusatzstoffen in eine fluidstroemung
DE9200366U1 (de) * 1992-01-15 1993-05-19 Neukamm, Erich, 7130 Mühlacker Vorrichtung zur Verringerung von Schadstoffemissionen
DE29604211U1 (de) * 1996-03-07 1996-07-04 Benecke, Klaus, 44289 Dortmund Dieselspargerät mit gleichzeitiger Verbesserung der Emmissionswerte

Also Published As

Publication number Publication date
DE59704277D1 (de) 2001-09-20
DE19624352C2 (de) 1998-07-02
DE19624352A1 (de) 1998-02-12
EP0814254A1 (fr) 1997-12-29

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