EP1187983B1 - Soupape d'injection de carburant pour moteurs a combustion interne - Google Patents

Soupape d'injection de carburant pour moteurs a combustion interne Download PDF

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Publication number
EP1187983B1
EP1187983B1 EP00936813A EP00936813A EP1187983B1 EP 1187983 B1 EP1187983 B1 EP 1187983B1 EP 00936813 A EP00936813 A EP 00936813A EP 00936813 A EP00936813 A EP 00936813A EP 1187983 B1 EP1187983 B1 EP 1187983B1
Authority
EP
European Patent Office
Prior art keywords
valve
injection
fuel
valve body
fuel injection
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
EP00936813A
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German (de)
English (en)
Other versions
EP1187983A1 (fr
Inventor
Steffen Hunkert
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.)
Volkswagen AG
Original Assignee
Volkswagen 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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP1187983A1 publication Critical patent/EP1187983A1/fr
Application granted granted Critical
Publication of EP1187983B1 publication Critical patent/EP1187983B1/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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F02M61/1833—Discharge orifices having changing cross sections, e.g. being divergent

Definitions

  • the invention relates to a fuel injection valve for internal combustion engines after Genus of claim 1 from.
  • a fuel injection valve for internal combustion engines after Genus of claim 1 from.
  • known fuel injection valve is a piston-shaped valve member axially displaceable in arranged a valve body and has at its combustion chamber end a conical valve sealing surface. With this conical valve sealing surface, the valve member acts arranged with one at a closed end of a bore in the valve body conical valve seat surface together, being at the contact line between Valve sealing surface and valve seat surface is formed a sealing cross-section.
  • this Sealing cross-section are in the fuel flow direction downstream injection ports arranged downstream, which are arranged in the wall of the valve body and the starting from the bore in the valve body open on the outer circumferential surface and in protrude the combustion chamber of the engine to be supplied.
  • These are Injection openings on the known fuel injection valve conical, wherein the cross section of the injection openings of a relatively large diameter at Fuel inlet to a relatively small diameter at the fuel outlet evenly reduced conically.
  • the known fuel injection valve has the disadvantage that all Injection openings have the same conicity, so that it is not possible to Fuel injection jet at each injection port separately to the respective requirements to individually adapt to the individual Einsprittstrahl within the combustion chamber.
  • This individual optimization of the individual beam geometries at each Injection opening comes in particular in an off-center or oblique Installation position of the fuel injection valve in the combustion chamber of the internal combustion engine, however a significant importance, since it is only possible, the fuel injection in terms of the beam geometry and the beam conditioning optimally to the respective Adjust conditions in the combustion chamber of the engine and so an optimal Fuel preparation and combustion to produce.
  • Such a beam geometry optimization at each jet entry is however with the known fuel injection valve not possible.
  • the fuel injection valve according to the invention for internal combustion engines with the Characteristic features of claim 1 has the advantage over the other hand on that at each injection port an optimization of the injection jet geometry in Depending on local needs is possible.
  • the cross section of the injection opening starting from a large diameter to a small diameter in the flow direction of the Fuel evenly (positive conicity).
  • the cross-section of the injection opening (Spray hole), starting from the inlet opening in the direction of the combustion chamber side Evenly increase the outlet opening (negative conicity).
  • At least two injection openings as a function of the Installation position of the fuel injection valve in the combustion chamber to be supplied Internal combustion engine, mutually different cone angles, wherein the Cone angle preferably in a range between 10 to 90 °.
  • the Cone angle preferably in a range between 10 to 90 °.
  • deflection angle preferably between 15 ° to special installation cases up to 120 °
  • the differently formed Injection openings may be arranged in a row over the circumference of the injection valve can.
  • a plurality of axially superimposed to provide arranged rows of injection openings on the fuel injection valve the also via a corresponding control of the axially movable valve member can be alsêtbar one after the other.
  • the fuel inflow into the injection opening particularly advantageous if the inlet edges on the Injection opening are rounded with a radius. This is already possible here turbulences and thus avoid the emergence of low pressure areas, so that the fuel inflow into the injection opening can be made uniform. This also aids in shaping the fuel flow within the injection port in the desired jet geometry of the injected at the outlet of the injection opening Fuel jet.
  • each injection port each as required by the flow of the fuel and the jet geometry at the exit provided with an individual optimized conicity, wherein the cone angle of the corresponding injection port can be positive or negative.
  • FIG 1 shows a first embodiment in a simplified partial section through the combustion chamber-side tip of the fuel injection valve, in which the Injection openings have a negative cone angle
  • the figure 2 a second Embodiment in a section through the combustion chamber side part of Valve body, wherein the juxtaposed injection ports to each other are offset and have different positive cone angles
  • the figure 3 a third embodiment, in which two axially superimposed rows of Injection openings are shown with different cone angles.
  • valve body 1 which with its lower, shown end in a combustion chamber not shown in detail an internal combustion engine protrudes.
  • a valve member 3 is axially displaceable in a known manner guided, which at its lower illustrated, combustion chamber end a conical Valve sealing surface 5, with which it has a valve seat surface 7 on the valve body. 1 interacts.
  • This valve seat surface 7 is at a closed end of a Bore 9 formed in the valve body 1 and also has a conical cross section on, wherein the cone angle of the valve seat surface 7 slightly from the cone angle of the Valve sealing surface 5 deviates on the valve member 3.
  • valve seat surface 7 and valve sealing surface 5 are further a Variety of injection openings 13 are provided, starting from the wall of the Bore 9 open to the outer peripheral surface of the valve body 1 and not in shown in detail in the combustion chamber of the engine to be supplied protrude.
  • injection ports are intended depending on the requirements the fuel flow and the injection jet to be sprayed be conical, wherein in the first embodiment shown in Figure 1 is a negative Conicity is shown, in which the cone angle is chosen such that the Cross section of the injection opening in the flow direction of the fuel from a relative small inlet diameter on the wall of the hole 9 steadily into a larger one Outlet diameter on the outer peripheral wall of the valve body 1 increases.
  • the injection openings 13 should be different from each other Have cone angle, that of the position of the respective injection port in the valve body 1 and the arrangement of the entire fuel injection valve in the combustion chamber to supplying internal combustion engine are dependent.
  • Fuel injection valve differs from the first shown in FIG Embodiment in the arrangement and configuration of the injection openings 13 in the wall of the valve body 1.
  • the injection openings 13 now have a positive conicity, wherein the diameter d1 at the entrance to the injection port 13th is formed larger than the diameter d2 at the outlet opening of the Injection opening 13 in the combustion chamber of the engine to be supplied.
  • two injection ports 13 are provided, the are arranged differently in the valve body 1 and also different Have cone angle. In this case, the cone angle ⁇ of a deflection angle ⁇ of the inflowing fuel at the inlet into the injection port 13 dependent.
  • Cone angle ⁇ at the injection openings 13 should preferably with increasing Deflection angle ⁇ also increase. Furthermore, the inlet edges 15 am Transition between the inner wall surface of the valve body 1 for entry into the Injection opening 13 is formed rounded. In this way, a uniform Entering the fuel flow into the injection ports 13 can be achieved, which then within the injection openings 13 according to the desired spray pattern over formed the formation of the cone angle to the desired injection spray pattern can be.
  • FIG. 3 shows a third exemplary embodiment of the invention
  • Fuel injection valve for internal combustion engines in which in the valve body 1 now two rows of axially übereiander arranged injection openings 13 are provided are.
  • the injection openings 13 arranged in a circumferential row have in each case the same deflection angle ⁇ and thus the same cone angle ⁇ .

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 (7)

  1. Soupape d'injection de carburant pour moteurs à combustion interne, comprenant un organe de soupape (3) pouvant coulisser axialement dans un corps de soupape (1) et présentant à son extrémité du côté de la chambre de combustion une surface d'étanchéité de soupape (5) avec laquelle il coopère avec une surface de siège de soupape (7) disposée sur le corps de soupape (1) en formant une section transversale d'étanchéité et comprenant des ouvertures d'injection (13) dans la paroi du corps de soupape (1), lesquelles sont disposées dans la direction de l'écoulement de carburant en aval après la section transversale d'étanchéité entre la surface de siège de soupape (7) et la surface d'étanchéité de soupape (5) et présentent une forme conique, caractérisée en ce qu'au moins deux ouvertures d'injection (13) de la soupape d'injection de carburant présentent des angles de conicité différents l'un de l'autre.
  2. Soupape d'injection de carburant selon la revendication 1, caractérisée en ce qu'un diamètre d'entrée (d1) des ouvertures d'injection (13) sur la surface de la paroi interne du corps de soupape (1) est plus petit qu'un diamètre de sortie (d2) sur la surface de paroi externe du corps de soupape (1) pénétrant dans la chambre de combustion du moteur à combustion interne.
  3. Soupape d'injection de carburant selon la revendication 1, caractérisée en ce qu'un diamètre d'entrée (d1) des ouvertures d'injection (13) sur la surface de paroi interne du corps de soupape (1) est plus grand qu'un diamètre de sortie (d2) sur la surface de paroi externe du corps de soupape (1) pénétrant dans la chambre de combustion du moteur à combustion interne.
  4. Soupape d'injection de carburant selon la revendication 1, caractérisée en ce qu'une pluralité d'ouvertures d'injection (13) disposées axialement les unes au-dessus des autres sont prévues.
  5. Soupape d'injection de carburant selon la revendication 1, caractérisée en ce que l'angle de conicité (α) des ouvertures d'injection (13) dépend à chaque fois de l'angle de déflexion (β) de la quantité de carburant affluant à l'entrée dans les ouvertures d'injection (13), les ouvertures d'injection (13) ayant un angle de déflexion (β) identique présentant respectivement un angle de conicité (α) identique.
  6. Soupape d'injection de carburant selon la revendication 5, caractérisée en ce que l'angle de conicité (α) au niveau des ouvertures d'injection (13) augmente avec un angle de déflexion (β) croissant du courant de carburant affluant.
  7. Soupape d'injection de carburant selon la revendication 1, caractérisée en ce qu'une arête d'entrée (15) au niveau du passage entre la surface de paroi interne du corps de soupape (1) et l'ouverture d'injection (13) est réalisée de manière arrondie.
EP00936813A 1999-06-02 2000-05-26 Soupape d'injection de carburant pour moteurs a combustion interne Expired - Lifetime EP1187983B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19925380 1999-06-02
DE19925380A DE19925380A1 (de) 1999-06-02 1999-06-02 Kraftstoffeinspritzventil für Brennkraftmaschinen
PCT/EP2000/004813 WO2000075504A1 (fr) 1999-06-02 2000-05-26 Soupape d'injection de carburant pour moteurs a combustion interne

Publications (2)

Publication Number Publication Date
EP1187983A1 EP1187983A1 (fr) 2002-03-20
EP1187983B1 true EP1187983B1 (fr) 2005-08-10

Family

ID=7910091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00936813A Expired - Lifetime EP1187983B1 (fr) 1999-06-02 2000-05-26 Soupape d'injection de carburant pour moteurs a combustion interne

Country Status (4)

Country Link
US (1) US6520145B2 (fr)
EP (1) EP1187983B1 (fr)
DE (2) DE19925380A1 (fr)
WO (1) WO2000075504A1 (fr)

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JP4103291B2 (ja) * 2000-03-08 2008-06-18 株式会社デンソー 燃料噴射ノズル
DE10118164B4 (de) * 2001-04-11 2007-02-08 Robert Bosch Gmbh Brennstoffeinspritzventil
DE10132449A1 (de) * 2001-07-04 2003-01-23 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE10329731A1 (de) * 2003-07-02 2005-02-03 Robert Bosch Gmbh Kraftstoffeinspritzventil und ein Verfahren zur Herstellung desselben
FR2876750B1 (fr) * 2004-10-19 2010-09-17 Renault Sas Buse d'injection possedant des trous de conicites differentes et moteur comportant une telle buse
US7104475B2 (en) * 2004-11-05 2006-09-12 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7051957B1 (en) * 2004-11-05 2006-05-30 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7185831B2 (en) * 2004-11-05 2007-03-06 Ford Motor Company Low pressure fuel injector nozzle
US7438241B2 (en) * 2004-11-05 2008-10-21 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7124963B2 (en) * 2004-11-05 2006-10-24 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7198207B2 (en) * 2004-11-05 2007-04-03 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7137577B2 (en) * 2004-11-05 2006-11-21 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7168637B2 (en) * 2004-11-05 2007-01-30 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
ES2285646T3 (es) * 2005-01-19 2007-11-16 Delphi Technologies, Inc. Inyector de combustible.
JP4549222B2 (ja) * 2005-04-19 2010-09-22 ヤンマー株式会社 直接噴霧式ディーゼル機関
FR2892452A1 (fr) * 2005-10-26 2007-04-27 Peugeot Citroen Automobiles Sa Chambre de combustion pour moteur a injection directe et moteur comportant ladite chambre
DE102006013962A1 (de) 2006-03-27 2007-10-04 Robert Bosch Gmbh Einspritzdüse mit Spritzkanälen sowie Verfahren zur Einbringung von Kanälen
US7572997B2 (en) * 2007-02-28 2009-08-11 Caterpillar Inc. EDM process for manufacturing reverse tapered holes
KR100872841B1 (ko) * 2007-09-28 2008-12-09 한국전력공사 디엠이 연료용 가스터빈 연소기의 연료노즐과 이의 설계방법
US8496191B2 (en) * 2008-05-19 2013-07-30 Caterpillar Inc. Seal arrangement for a fuel injector needle valve
DE102008041676A1 (de) * 2008-08-29 2010-03-04 Robert Bosch Gmbh Brennstoffeinspritzventil
EP2187043A1 (fr) * 2008-11-14 2010-05-19 Delphi Technologies Holding S.à.r.l. Buse d'injection
US8479519B2 (en) * 2009-01-07 2013-07-09 General Electric Company Method and apparatus to facilitate cooling of a diffusion tip within a gas turbine engine
US20110030635A1 (en) * 2009-08-04 2011-02-10 International Engine Intellectual Property Company, Llc Fuel injector nozzle for reduced coking
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KR20120058151A (ko) * 2010-11-29 2012-06-07 현대자동차주식회사 차량용 인젝터
JP5195890B2 (ja) * 2010-12-21 2013-05-15 トヨタ自動車株式会社 燃料噴射弁および内燃機関
AT511880B1 (de) * 2011-09-06 2013-12-15 Bosch Gmbh Robert Verschleissoptimierte herstellung von konischen spritzlöchern
JP5959892B2 (ja) * 2012-03-26 2016-08-02 日立オートモティブシステムズ株式会社 火花点火式燃料噴射弁
US9546633B2 (en) * 2012-03-30 2017-01-17 Electro-Motive Diesel, Inc. Nozzle for skewed fuel injection
US20130298563A1 (en) * 2012-05-14 2013-11-14 General Electric Company Secondary Combustion System
EP2757247A1 (fr) * 2013-01-18 2014-07-23 EFI Hightech AG Buse d'injection pour un moteur à combustion interne
JP5786875B2 (ja) * 2013-02-05 2015-09-30 株式会社デンソー 燃料噴射ノズル
AT512893B1 (de) 2013-02-05 2013-12-15 Bosch Gmbh Robert Bauelement mit ineinandermündenden Hochdruckbohrungen
EP2884090B1 (fr) 2013-12-11 2018-02-21 Continental Automotive GmbH Corps de buse et soupape d'injection de carburant
US9695723B2 (en) * 2014-01-15 2017-07-04 General Electric Company Combustion system including a piston crown and fuel injector
DE102014220928A1 (de) * 2014-10-15 2016-04-21 Continental Automotive Gmbh Registerdüse zum Einspritzen von Kraftstoff in den Brennraum einer Brennkraftmaschine
US10570865B2 (en) * 2016-11-08 2020-02-25 Ford Global Technologies, Llc Fuel injector with variable flow direction
DE102016224084B4 (de) * 2016-12-05 2019-04-18 Robert Bosch Gmbh Kraftstoffinjektor
JP7529580B2 (ja) * 2021-01-19 2024-08-06 本田技研工業株式会社 内燃機関

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Also Published As

Publication number Publication date
DE19925380A1 (de) 2000-12-07
DE50010930D1 (de) 2005-09-15
US6520145B2 (en) 2003-02-18
US20020043574A1 (en) 2002-04-18
WO2000075504A1 (fr) 2000-12-14
EP1187983A1 (fr) 2002-03-20

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