WO2015055612A1 - Soupape d'injection pour moteur à combustion interne - Google Patents

Soupape d'injection pour moteur à combustion interne Download PDF

Info

Publication number
WO2015055612A1
WO2015055612A1 PCT/EP2014/071958 EP2014071958W WO2015055612A1 WO 2015055612 A1 WO2015055612 A1 WO 2015055612A1 EP 2014071958 W EP2014071958 W EP 2014071958W WO 2015055612 A1 WO2015055612 A1 WO 2015055612A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid inlet
injection valve
fluid
inlet line
flow
Prior art date
Application number
PCT/EP2014/071958
Other languages
German (de)
English (en)
Inventor
Achim Reuther
Original Assignee
Continental Automotive Gmbh
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 Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Priority to EP14798711.9A priority Critical patent/EP3058214B1/fr
Publication of WO2015055612A1 publication Critical patent/WO2015055612A1/fr

Links

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
    • F02M61/165—Filtering elements specially adapted in fuel inlets to injector
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0671—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto
    • F02M51/0675—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature having an elongated valve body attached thereto the valve body having cylindrical guiding or metering portions, e.g. with fuel passages
    • 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
    • F02M55/008—Arrangement of fuel passages inside of injectors
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/27—Fuel-injection apparatus with filters

Definitions

  • the invention relates to an injection valve for a Burn ⁇ voltage combustion engine.
  • Injectors are widely used, particularly in internal combustion engines, where they can be arranged to meter a fluid into an intake manifold of an internal combustion engine or directly into the combustion chamber of a cylinder of the internal combustion engine. These injectors should have a high durability over their lifetime and a very accurate injection volume.
  • the fluid may be or include fuel for the internal combustion engine, such as gasoline or diesel.
  • the object of the invention is to create an improved A ⁇ injection valve.
  • the main flow direction is preferably a direction according to which the fluid predominantly flows when it Fluid inlet line passes.
  • the main flow direction may be directed from an inlet of the fluid ⁇ inlet line to an outlet of the fluid inlet line directly from an inlet of the injection valve to an exit of the injection valve and / or.
  • the catching portion may contribute to a catcher or a catching element which is arranged in the fluid inlet line.
  • particulate filters for example for filtering suspended particles carried by the fluid, in the injection valve or the fluid inlet line of the injection valve can advantageously be dispensed with. Consequently, it can be prevented that the filter, negative influence on the flow resistance of the fluid flowing through the fluid inlet ⁇ forward conduction due to the opening amounts of the corresponding filter. Furthermore, chemical reactions, which can be ⁇ influences the operation of the injector negative, be prevented. The said chemical reactions of the injection valve can, in particular, be caused by the material of the filter.
  • the filters may further cause physical or mechanical disadvantages to the injector, such as vibrations or pressure waves caused by the filters during operation of the injector. Such disadvantages can also be prevented by the given injection valve concept. Furthermore, filters can only be applied with opening sizes down to a certain dimension, wherein
  • Airborne particulates of smaller sizes than this dimension can in any event cause damage to the injector over its lifetime.
  • the injection valve a Ven ⁇ tilnadel, which with a valve seat of the injection valve can interact, wherein an opening of the injection valve, a movement of the valve needle relative to the valve seat, on which the valve needle rests in a closed position of the injection valve means.
  • the injection valve must open against pressures of 200 bar in Ben ⁇ zinmotoren up to 2000 bar for diesel engines.
  • damage to the sealing surface between the valve needle and the valve seat can be prevented, in particular caused by suspended particles BeC ⁇ ending.
  • the fluid inlet conduit has a first bend arranged to connect an inlet portion of the fluid inlet conduit to the capture portion, the fluid inlet conduit having a second bend arranged to connect the capture portion to an exit portion of the fluid inlet conduit.
  • the second bend On the basis of the second bend, it can be achieved that the flow of the fluid is diverted from the direction of the catching section back to the main flow direction.
  • the second bend is expediently arranged downstream in the flow direction of the first bend.
  • the fluid inlet line is formed such that the catching section overlaps axially with the inlet section and the outlet section of the fluid inlet line.
  • the fluid inlet line is configured such that the fluid flowing through the fluid inlet line carried suspended particles are deposited in the fluid inlet line in a deposition area of the first bend.
  • the suspended particles can be prevented from damaging or destroying the injector, for example, during operation or closing of the injector or its valve needle (see above).
  • the suspended particles are deposited by the gravitational force in a region of the first bend, since the suspended particles can have a greater mass density than the fluid.
  • the suspended particles are metallic particles having typical diameters of less than 100 ym.
  • the floating particles are metallic particles having typical diameters of less than 100 ym.
  • the suspended particles may also have diameters of less than 30 ym.
  • the fluid inlet conduit is configured such that the suspended particles are prevented from being passed through the capture portion and passing the second bend when fluid is directed through the fluid inlet conduit.
  • the fluid inlet line has a flow element, which is arranged at a given position of the first bend, and wherein the flow element is formed ⁇ to define a capture range for the suspended particles, so that when the suspended particles have once entered the capture area , from the flow of the fluid through the flow element are retained.
  • the flow ⁇ element may be a blocking component for the suspended particles that have entered the capture area.
  • the flow element can direct the flow of the fluid as it passes the capture area.
  • the given position may relate to any position in or adjacent to the first bend.
  • the flow element has two parts separated by a given distance.
  • the given distance is expediently greater than so that the suspended particles can enter into the capture range a through ⁇ diameter of the suspended particles.
  • the two parts are arranged on opposite inner sides of the fluid inlet line.
  • the flow element has a rounded and / or a straight shape.
  • the injection valve has a filter for filtering the suspended particles from the fuel.
  • the filter element may be provided in addition to the described capture range for the suspended particles.
  • Figure 1 shows schematically a longitudinal section of an injection valve of the prior art.
  • Figures 2 to 5 show a schematic longitudinal section of an injection valve according to the present invention or disclosure.
  • FIG. 6 shows a longitudinal section of an injection valve according to FIGS. 2 to 5.
  • FIG. 1 shows an injection valve 100.
  • the injection valve 100 is shown only schematically.
  • the injection valve 100 has a fluid inlet line 1.
  • the fluid inlet line 1 is designed to define the flow of a fluid along a main ⁇ flow direction, which is indicated by the arrow 6.
  • the fluid inlet line 1 is provided with a filter 5 for suspended particles, such as welding beads, which float or are guided in the fluid to be led through the fluid inlet line 1.
  • a floating particle is in the figure
  • a trajectory of the suspended particles is identified by the reference numeral 3.
  • a trajectory of the fluid is indicated by the reference numeral 4 in FIG.
  • the suspended particles 2 deviate from the trajectory 4 of the fluid.
  • the suspended particles 2 may have typical diameters of less than 100 ym, preferably less than 30 ym.
  • FIG. 2 schematically shows a longitudinal section of an injection valve 100 according to the present invention.
  • the injection valve 100 from FIG. 2 has a catching section 7.
  • the catching portion 7 is configured to guide the fluid along a direction that is at least partially aligned opposite to the main flow direction 6. This is evident from the trajectory 4 of the fluid which is conducted in the catching section 7 in a direction opposite to the main flow direction 6, that is to say upward in FIG. 2.
  • the suspended particles in the fluid inlet line 1 may allow the suspended particles in the fluid inlet line 1 to deposit in a given deposition area (not explicitly shown). Consequently, the suspended particles can be preferably prevented from being conducted from the fluid to the discharge section 13 of the fluid inlet line 1. In other words, the suspended particles 2 are caught by the catching portion 7 in the deposition area.
  • the trapping of the suspended particles 2 can be simplified by the gravitational force of the suspended particles, which can have a greater mass density than the fluid.
  • the fluid inlet line 1 has a first bend 9, which directs the fluid, which flows according to the main flow direction 6, in the catching region 7 in the opposite direction.
  • the fluid inlet line 1 further has a second bend 10, which then redirects the fluid from the catching area 7 in the direction of the main flow direction 6.
  • the catching portion 7 overlaps axially with the inlet portion 12 and the outlet portion 13 of the fluid inlet duct 1.
  • FIG. 3 shows an alternative embodiment of the injection valve 100.
  • the injection valve 100 from FIG. 3 has a step 11 in the inlet section 12 of the fluid inlet line 1.
  • the stage 11 causes a reduction in the diameter of the inlet ⁇ section 12 of the fluid inlet line 1.
  • the mentioned Redu ⁇ cation causes an increase in the flow velocity of the fluid, which can be achieved that the trajectory 3 of the suspended particles 2 further deviates from the trajectory 4 of the fluid , As a result, trapping of the suspended particles 2 can be further simplified.
  • FIG. 4 shows a further embodiment of the injection valve.
  • the injection valve 100 furthermore has a flow element 8.
  • the flow element 8, in combination with a wall or boundary of the fluid inlet line 1, can define a capture region for capturing the suspended particles 2.
  • the flow element 8 On opposite inner sides of the fluid inlet line 1, the flow element 8 in each case has a part with a rounded shape. Thereby, the flow of the fluid (see reference numeral 4) can be directed, while on the other hand, trapping of the suspended particles 2 can be facilitated because the suspended particles 2 once entered the capture area are separated from the flow of the fluid.
  • FIG. 5 shows a further embodiment of the injection valve 100.
  • the flow element 8 has two straight parts. This embodiment may have a similar effect to that described with reference to FIG.
  • FIG. 6 shows a longitudinal section of an injection valve 100 according to FIGS. 2 to 5, described in somewhat more detail.
  • the injection valve 100 is preferably suitable for metering fuel into an internal combustion engine.
  • the injection valve 100 preferably has a fluid inlet line 1, although this is not explicitly indicated.
  • injector 1 may be provided at any convenient position of injector 100, for example in or at a portion of the injector which is spaced from an injector or valve seat (see below).
  • the injection valve 100 has a longitudinal axis X.
  • the injector 100 further includes an injector housing 16 having an injector cavity.
  • the injection valve cavity can accommodate a valve needle 22 with a needle portion 21, wherein the valve needle 22 in the injection valve ⁇ cavity is axially movable.
  • the injection valve 100 further has a valve seat 18, on which the valve needle 22 rests in a closed position in which the valve needle 22 is raised for an opening.
  • the suspended particles 2 may enter the injection valve 100 and, for example, by the pressure applied to the injection valve 100, arrive at a sealing surface between the valve needle 22 and the valve seat 18. Consequently, the particles can
  • the injector 100 further includes a spring member 17 which is designed and arranged to exert a force on the valve needle to urge the valve needle 22 into a closed position. In the closed position of the valve needle 22, the valve needle 22 sealingly rests on the valve seat 18 to prevent flow of the fluid through at least the one injector.
  • the injector may be playing a hole in the injection valve 100 at ⁇ . However, it may also be suitably for the dosage of the fluid of another kind.
  • the injection valve 100 further includes an electromagnetic activation unit designed to drive the valve needle 22.
  • the electromagnetic activation unit has a coil or a lifting magnet 15. It also has a pole piece 14, which is fixedly coupled to the injection valve housing 16.
  • the electromagnetic activation unit further comprises a magnetic armature 19, which is axially movable by actuation of the electromagnetic activation unit in the injection valve cavity.
  • the magnet armature 19 is mechanically coupled or decoupled with the valve needle 22.
  • the armature 19 is movable relative to the valve needle 22 only within certain limits.
  • Valve needle 22 prevents fluid flow through an outlet portion (not explicitly indicated) and through injector housing 16 in a closed position of valve needle 22. Outside the closed position of valve needle 22, valve needle 22 permits flow of fluid through the outlet portion.
  • the valve needle 22 also has a stop element 20, which is further connected to other components of the injection valve 100 can abut during closing, whereby an axial movement of the valve needle 22 is restricted.
  • the stop member 20 may be welded to the valve needle 22.
  • the electro ⁇ magnetic activation unit can exert an electromagnetic force on the armature 19.
  • the magnet armature 19 can move in a direction away from the outlet section, in particular in the direction of flow of the fluid subsequently, because of the electromagnetic force which acts on the magnet armature 19.
  • the magnet armature 19 can take the valve needle 22 so that the valve needle 22 moves in the axial direction out of the closed position.
  • a clearance between the injector housing 16 and the valve needle 22 at one axial end of the valve needle 22 remote from the electromagnetic activation unit forms a flow path for the fluid, and the fluid can pass through the injector.
  • the spring element 17 can force the valve needle 22 to move in the axial direction to the closed position. It is dependent on the force balance between the force of the valve needle 22 caused by the electromagnetic activation unit together with the coil 15 and the force on the valve needle 22 caused by the spring element 17, whether the valve needle 22 is in its closed position or not.
  • the concept presented allows a cost-efficient implementation of the invention.
  • injection valve since the use of particle filters can be avoided.
  • the integration of the presented fluid inlet line into existing injection valve concepts can still be easily achieved.
  • the robustness of the injector according to the invention can be increased because separate filter components are prone to failure or damage.

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

Abstract

L'invention concerne une soupape d'injection (100), destinée à un moteur à combustion interne, qui comporte une conduite d'entrée de fluide (1) adaptée pour définir un écoulement (4) d'un fluide le long d'une direction d'écoulement principal (6). La conduite d'entrée de fluide (1) comporte une partie collectrice (7), qui est adaptée pour guider le fluide le long d'une direction qui est orientée au moins en partie dans la direction contraire à la direction d'écoulement principal (6).
PCT/EP2014/071958 2013-10-15 2014-10-14 Soupape d'injection pour moteur à combustion interne WO2015055612A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14798711.9A EP3058214B1 (fr) 2013-10-15 2014-10-14 Soupape d'injection pour moteur a combustion

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013220791.3A DE102013220791B4 (de) 2013-10-15 2013-10-15 Einspritzventil für eine Verbrennungskraftmaschine
DE102013220791.3 2013-10-15

Publications (1)

Publication Number Publication Date
WO2015055612A1 true WO2015055612A1 (fr) 2015-04-23

Family

ID=51900383

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/071958 WO2015055612A1 (fr) 2013-10-15 2014-10-14 Soupape d'injection pour moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP3058214B1 (fr)
DE (1) DE102013220791B4 (fr)
WO (1) WO2015055612A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017207845A1 (de) * 2017-05-10 2018-11-15 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids
US11300085B2 (en) * 2018-09-05 2022-04-12 Ford Global Technologies, Llc Methods and systems for a fuel injector

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4140070A1 (de) * 1991-12-05 1993-06-09 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Kraftstoffeinspritzventil fuer brennkraftmaschinen, insbesondere gemischverdichtende brennkraftmaschinen
US5678767A (en) * 1996-03-14 1997-10-21 Siemens Automotive Corporation Fuel injector with contaminant deflector
EP1043054A2 (fr) * 1999-03-31 2000-10-11 Delphi Technologies, Inc. Filtre
DE102004024542A1 (de) * 2004-05-18 2005-12-15 Robert Bosch Gmbh Kraftstoff-Einspritzventil für Brennkraftmaschinen
EP1621765A2 (fr) * 2004-07-30 2006-02-01 Siemens Aktiengesellschaft Element filtrant et dispositif filtrant
EP1621760A1 (fr) * 2004-07-29 2006-02-01 Delphi Technologies, Inc. Accumulateur de carburant comportant un filtre
JP2006336594A (ja) * 2005-06-06 2006-12-14 Denso Corp 燃料フィルタ
EP1918576A2 (fr) * 2006-10-30 2008-05-07 Robert Bosch Gmbh Filtre à carburant
EP2116718A2 (fr) * 2008-04-10 2009-11-11 Delphi Technologies, Inc. Dispositif de protection pour système de guidage inférieur d'un injecteur à carburant

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4140070A1 (de) * 1991-12-05 1993-06-09 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Kraftstoffeinspritzventil fuer brennkraftmaschinen, insbesondere gemischverdichtende brennkraftmaschinen
US5678767A (en) * 1996-03-14 1997-10-21 Siemens Automotive Corporation Fuel injector with contaminant deflector
EP1043054A2 (fr) * 1999-03-31 2000-10-11 Delphi Technologies, Inc. Filtre
DE102004024542A1 (de) * 2004-05-18 2005-12-15 Robert Bosch Gmbh Kraftstoff-Einspritzventil für Brennkraftmaschinen
EP1621760A1 (fr) * 2004-07-29 2006-02-01 Delphi Technologies, Inc. Accumulateur de carburant comportant un filtre
EP1621765A2 (fr) * 2004-07-30 2006-02-01 Siemens Aktiengesellschaft Element filtrant et dispositif filtrant
JP2006336594A (ja) * 2005-06-06 2006-12-14 Denso Corp 燃料フィルタ
EP1918576A2 (fr) * 2006-10-30 2008-05-07 Robert Bosch Gmbh Filtre à carburant
EP2116718A2 (fr) * 2008-04-10 2009-11-11 Delphi Technologies, Inc. Dispositif de protection pour système de guidage inférieur d'un injecteur à carburant

Also Published As

Publication number Publication date
EP3058214A1 (fr) 2016-08-24
DE102013220791A1 (de) 2015-04-16
DE102013220791B4 (de) 2015-07-23
EP3058214B1 (fr) 2019-12-11

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