WO2020207534A1 - Agencement d'une bougie d'allumage dans une douille de bougie d'allumage constituée d'un matériau métallique et procédé pour sa fabrication - Google Patents

Agencement d'une bougie d'allumage dans une douille de bougie d'allumage constituée d'un matériau métallique et procédé pour sa fabrication Download PDF

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Publication number
WO2020207534A1
WO2020207534A1 PCT/DE2020/100274 DE2020100274W WO2020207534A1 WO 2020207534 A1 WO2020207534 A1 WO 2020207534A1 DE 2020100274 W DE2020100274 W DE 2020100274W WO 2020207534 A1 WO2020207534 A1 WO 2020207534A1
Authority
WO
WIPO (PCT)
Prior art keywords
spark plug
plug sleeve
fuel channel
check valve
ignition
Prior art date
Application number
PCT/DE2020/100274
Other languages
German (de)
English (en)
Inventor
Claus Schaeperkoetter
Heinrich SCHÄPERKÖTTER
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2020207534A1 publication Critical patent/WO2020207534A1/fr

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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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/06—Fuel-injectors combined or associated with other devices the devices being sparking plugs
    • 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
    • F02M21/0272—Ball valves; Plate valves; Valves having deformable or flexible parts, e.g. membranes; Rotatable valves
    • 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0275—Injectors for in-cylinder direct injection, e.g. injector combined with spark plug
    • 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/12—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for fuels in pulverised state
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/40—Sparking plugs structurally combined with other devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Definitions

  • the invention relates to an arrangement of a spark plug in a spark plug sleeve made of a metallic material, which has an eccentric cylindrical receptacle for receiving an insulator body of the spark plug, so that a wall section of the spark plug sleeve designed with a greater wall thickness results, with A ground electrode extending from the spark plug sleeve is provided at the end of the receptacle with a reduced diameter and this earth electrode interacts with a central electrode protruding axially over the insulator body to generate an ignition spark gap, where a fuel duct runs within the thick wall section and its outlet , the ignition spark gap adjacent, is provided in the spark plug sleeve, and wherein the fuel channel is assigned to a check valve.
  • the invention relates to an arrangement of a spark plug in a spark plug sleeve made of a metallic material, which has a cylindrical receptacle extending eccentrically to its outer fastening section for receiving an insulating body of the spark plug, so that a wall section of the spark plug sleeve with a greater wall thickness results, a ground electrode is provided at the front end and this to generate a spark gap with an axially protruding center electrode over the insulator body cooperates, with a fuel channel running within the wall thickness formed with greater wall thickness, and a fuel line forming a feed pipe in which a Check valve is arranged at one end with an A occurs connected to the fuel channel.
  • the invention also relates to an arrangement of an ignition and injection device consisting of an ignition device and a feed for a gaseous additive in a cylinder head of a reciprocating piston internal combustion engine, the ignition device designed as a spark plug being arranged in a cylindrical receptacle of a spark plug sleeve made of a metallic material and with its end having a ground electrode and a center electrode protrudes directly into a combustion chamber of the reciprocating internal combustion engine, and wherein a fuel channel runs within the spark plug zenhülse, which extends up to the end face facing the combustion chamber.
  • the invention also relates to a method for producing a spark plug sleeve made of a metallic material of an ignition and injection device whose cylindrical receptacle for a spark plug is arranged eccentrically to form a wall section with a greater wall thickness, with a wall section located between end faces within this wall section the spark plug sleeve extending fuel channel extends.
  • a spark plug should be arranged eccentrically to a spark plug sleeve in order to create space for the supply of an antechamber fluid which is introduced via a fuel channel with a flow direction F.
  • a check valve is intended to ensure that the pressure increase caused by the combustion cannot drive antechamber fluid against the flow direction F from the fuel channel.
  • the prechamber fluid is fed into the fuel channel via a feed pipe that is fixed to the spark plug sleeve. Within this feed pipe, the check valve is arranged on.
  • a combustible gas such as H2, CFU and / or fuel should be used as the prechamber fluid.
  • H2 in particular is very suitable due to its high diffusion speed, wide ignition limits and low ignition energy requirement.
  • the spark plug is fixed in the cylinder head with the spark plug sleeve, which is referred to as an adapter, the spark plug sleeve holding the spark plug via a central one Recording.
  • the hydrogen used as fuel then flows through a long nozzle with a very small inner diameter to prevent the flame from kicking back into the supply line.
  • the check valve is arranged at the outlet of the fuel channel and designed as a diaphragm flutter valve, which should consist of a rolled-up spring steel strip that takes on a spring function and is designed at the same time as a sealing surface at the movable end.
  • the invention is based on an arrangement of a spark plug in a spark plug sleeve made of a metallic material, which has an eccentric section extending cylindrical receptacle for receiving an insulator body of the spark plug.
  • a wall section of the spark plug sleeve with a greater wall thickness is created.
  • a ground electrode extending from the spark plug sleeve at the end face is provided at an end of the receptacle with a reduced diameter, this earth electrode cooperating with a central electrode extending from the insulator body to generate an ignition spark gap.
  • a fuel channel runs inside the wall section, which has a greater wall thickness, the outlet of which, adjacent to the ignition spark gap, is provided in the spark plug sleeve, and a check valve is assigned to the fuel channel.
  • the check valve is inserted into the sen from the outlet side of the fuel channel. This results in a lower thermal load on the check valve arranged in the fuel channel, and the check valve is also not directly exposed to the exhaust gas occurring in the combustion chamber during combustion. In addition, its arrangement in the fuel channel from the outlet side considerably simplifies installation. As a fuel that is blown into the combustion chamber via the fuel channel, H2 in particular is very suitable because of its high diffusion speed, wide ignition limits and low flame energy requirement.
  • check valve inserted into this from the outlet side of the fuel channel, in contrast, according to DE 10 2017 130 984 A1, in the embodiment specified as the prior art, it is provided to be arranged in the feed pipe.
  • the check valve should be inserted into the line cross-section of the feed pipe from an inlet side for the fuel.
  • the feed pipe has a bore section which faces the inlet of the fuel channel running in the spark plug sleeve and which is radially expanded, and in that the check valve is inserted into this from the end of the enlarged bore section.
  • the check valve can thus be inserted in a simple manner before the connection of the feed pipe with the spark plug from the end provided for the corresponding connection into the enlarged bore section.
  • the check valve should have a spherical or conical blocking body which is acted upon in the closing direction by a valve spring, the valve spring being supported on an annular shoulder of the fuel channel or the fuel line running in the feed pipe.
  • a valve seat of the check valve that cooperates with the locking body can be formed directly in the feed pipe at the end of the extended bore section.
  • the invention is based on an arrangement of an ignition and injection device consisting of an ignition device and a feed for a gaseous additive in a cylinder head of a reciprocating internal combustion engine, the ignition device designed as a spark plug being arranged in a cylindrical receptacle of a spark plug sleeve made of a metallic material and protrudes with its end having a ground electrode and a center electrode directly into a combustion chamber of the reciprocating internal combustion engine.
  • a fuel channel runs within the spark plug sleeve, which extends up to its end face facing the combustion chamber.
  • the receptacle is arranged eccentrically in the spark plug sleeve, that the fuel channel runs in a wall section formed with a greater wall thickness due to the eccentricity of the spark plug and that a check valve is arranged in an end section of the fuel channel.
  • the subject of the invention is thus the structural design of a so-called hydrogen spark plug, the challenge of which is the very limited installation space of a series spark plug, into which a non-return valve, cavities and a gas connection must be integrated in addition to the center electrode.
  • the installation space must not be larger so that no changes have to be made to existing cylinder heads. Due to the very limited space in the combustion chamber of the gasoline engine for two to four gas exchange valves per cylinder unit, for fresh and exhaust gas ducts and for cooling ducts (water, oil) or cooling fins (air), there is no space for a larger spark plug or an additional gas injector.
  • the center electrode consisting of an insulator, electrode, interference suppression resistor and ignition cable connection, which can be designed as a commercially available 10 mm spark plug or an even smaller special spark plug and is therefore thinner than the center electrode of a 14 mm spark plug, is eccentrically inserted into the spark plug sleeve, which is designed as a metallic threaded body with the outer dimensions of a 14 mm spark plug can be introduced. This eccentric arrangement creates space for the fuel channel and the check valve, the cavity and the gas connection.
  • the check valve is advantageously placed as close as possible to the gas outlet in the breathing space of the spark plug so that only a little exhaust gas can flow back, or pure hydrogen is available up to the check valve. This avoids flushing or dilution losses of the hydrogen for the mixture formation of the initial combustion in the vicinity of the spark plug and minimizes hydrogen consumption. Any retreat of the flame front into the fuel channel, breathing space / non-return valve and then through the non-return valve into the hydrogen supply line is prevented by the strong cooling of the flame on the component walls. Pure hydrogen is not flammable.
  • the check valve with its flow direction to the combustion chamber can be designed, for example, as a spring-loaded ball valve.
  • a radially widened section for receiving a valve spring applied in the closing direction by a Ven to form the check valve at the end of the fuel channel Locking body is provided, the valve spring being supported at ih rem from the locking body facing away from the end on a locking element fixed in the section.
  • a bore extends from the fuel channel between the locking body and the closure element and connects it to an annular space formed between the spark plug and the spark plug sleeve.
  • the fuel channel is closed at its fuel-side end by means of a pressed-in ball that serves as a closure element and is caulked from the outside.
  • valve spring of the check valve is supported on this ball, whereby the hydrogen is fed to the combustion chamber via the transverse bore and the annular space.
  • Other valve designs such as flutter valve, diaphragm valve as a check valve can also be used be used.
  • the gas connection is realized by a feed tube that is pressed into the printed spark plug sleeve or, alternatively, is glued or soldered.
  • the standard center electrode with ceramic body, electrode, interference suppression resistor and connection thread made from a commercially available 10 mm spark plug is sealed on the electrode side with a sealing ring and attached to the connection side by flanging the base body.
  • the pressing force (sealing force) between the ceramic body and the base body is generated by a subsequent heat treatment that shrinks the base body.
  • Another possible embodiment would be the integration of a magnetically controlled metering valve for the hydrogen supply in the check valve and in the base body of the spark plug.
  • the connection of the spark plug with the ignition cable and the hydrogen supply can be made with a plug.
  • the electrical connection is made via a spring (conventional spark plug connector) and the gas connection is made via a sliding connection with an O-ring seal.
  • the gas supply only requires a low pressure, because gas is injected before the ignition point and that is before top dead center.
  • a method for producing a spark plug sleeve consisting of a metallic material's spark plug assembly is proposed, the cylindrical receptacle for a spark plug to form a wall section with a greater wall thickness is arranged eccentrically, within this wall section a between the end faces Spark plug sleeve extending fuel channel extends.
  • the spark plug sleeve is produced using 3D printing.
  • the free-form outer surfaces which can be easily implemented with 3D printing, prevent non-functional material accumulations. This makes the spark plug lighter, less material is required, the printing time is reduced and the Manufacturing costs are minimized.
  • a subsequent heat treatment causes the printed component to shrink by approx. 0.1%.
  • internal stresses are relieved and the hardness and strength increased (hardness approx. 54 HRC, tensile strength approx. 1900 Mpa).
  • the material-specific shrinkage is used specifically in the production strategy to create an additional force fit between the flange and the ceramic insert. This is necessary in order to achieve a seal between the flange and the ceramic insert.
  • a geometric feature (shrink zone) has also been introduced for targeted shrinking. An essential part of the pressure is the introduction of the fuel channel, which in this form cannot be conventionally produced.
  • Figure 1 is a schematic representation of a cylinder unit of a Hubkolbenbrennkraftmaschine with a spark plug assigned to this, via the spark plug sleeve hydrogen is supplied
  • Figure 2 is a longitudinal section through a complete unit consisting of a
  • spark plug there is a spark plug, a spark plug sleeve and a supply pipe for supplying hydrogen, a check valve being inserted into the fuel channel from an outlet side thereof,
  • FIG. 3 shows a longitudinal section through a spark plug sleeve produced in 3D printing
  • FIG. 4 shows a longitudinal section through the spark plug designed according to FIG. 3 after the spark plug has been inserted into it
  • Figure 5 is a longitudinal section through a complete unit consisting of a
  • spark plug There is a spark plug, a spark plug sleeve and a supply pipe for supplying hydrogen, a check valve being inserted from one end into an enlarged bore section of the supply pipe.
  • FIG. 1 a cylinder head of a reciprocating internal combustion engine is designated which, together with a cylinder liner 2 and a working piston 3, delimits a combustion chamber 4.
  • An ignition and injection device 5 is inserted into the cylinder head 1, of which a spark plug sleeve 6 and a spark plug 8 having an isolator body 7 are shown in FIG.
  • FIG. 1 shows that the end of the spark plug 8 is provided with an electrical connection bolt 9, via which it can be connected to a spark plug connector, not shown, so that an ignition cable 10 connected to the spark plug connector can be used Connection with an electronic ignition system 1 1 is established.
  • the ignition and injection device 5 is connected to a hydrogen-receiving tank 12 via a control device (not shown), with a fuel line 13 on the one hand to the spark plug sleeve 6 and on the other hand to the tank 12 connected. Starting from the fuel line 13, a fuel channel 14 runs within the spark plug sleeve 6.
  • Such a reciprocating internal combustion engine can be operated in lean burn mode, in which the combustion chamber 4 is supplied with a very lean fuel / air mixture with liquid or gaseous hydrocarbons (e.g. gasoline, natural gas) for stoichiometric combustion with lambda> 2.
  • a very lean fuel / air mixture with liquid or gaseous hydrocarbons (e.g. gasoline, natural gas) for stoichiometric combustion with lambda> 2.
  • an ignition spark for example a hydrogen / air mixture
  • an inflammatory mixture for example a hydrogen / air mixture
  • the ignition mixture ignited in this way creates a turbulent flame front in the lean hydrocarbon / air main mixture.
  • FIG. 2 which, as explained above, consists of the spark plug sleeve 6, which is provided with an external thread 6a, and the spark plug 8.
  • the receptacle 15 is arranged eccentrically in the spark plug sleeve 6. This creates a wall section 17 of the spark plug sleeve 6 which, compared to the other wall sections, has a greater wall thickness.
  • the fuel channel 14 which begins at an upper end face 18 of the spark plug sleeve 6 and ends at the lower end face 19 thereof, runs within this wall section 17.
  • the inlet area of the fuel channel 14 the latter is radially expanded in diameter, a feed pipe 20 being pressed into this section.
  • a radial diameter extension 21 is also provided in the outlet end region of the fuel channel 14, which serves to accommodate a check valve 22.
  • valve seat 23 which cooperates with a spherical locking body 24.
  • the locking body 24 is by means of a ner valve spring 25 is biased in its closing direction, this valve spring 25 being supported with its other end on a spherical closure element 26.
  • a caulking 27, which is carried out from the end face 19, is used to fix the closure element 26 in the enlarged diameter 21.
  • the hydrogen supplied via the fuel channel 14 and the check valve 22 enters a bore 29 from a space 28 formed between the blocking body 24 and the closure element 26 and is supplied to an annular space 30 which runs between the spark plug 8 and the spark plug sleeve 6.
  • the hydrogen is blown into the combustion chamber 4 according to FIG. 1 via this annular space 30.
  • the spark plug 8 essentially consists of a center electrode 31, an ignition pin 32 and an interference suppression resistor 33. These components are enclosed by the insulator body 7.
  • a ground electrode 34 extends from the spark plug sleeve 6, it being possible to generate an ignition spark gap due to the electrical voltage between the center electrode 31 and the ground electrode 34.
  • the spark plug 8 is fixed in the spark plug sleeve 6 by means of a flange 35.
  • spark plug sleeve 6 is shown in its state after the Fier ein by a 3D printing process.
  • a number of corresponding spark plug sleeves 6 can be produced by means of laser beam melting in the powder bed. These individual components are each positioned on a construction platform via their extruded edge geometry of the upper end face of the spark plug sleeve 6, which is then, as FIG. 2 shows, used as a flange 35.
  • a total of 100 spark plug sleeves 6 can be produced on the building platform using the 3D process.
  • all components are parallel, i.e. with one cut, separated from the aforementioned construction platform by means of wire EDM.
  • This process is followed by a heat treatment through which the printed component shrinks by approx. 0.1%.
  • residual stresses are relieved by the heat treatment and the hardness and strength are increased.
  • the spark plug 8 with its insulator body 7 made of ceramic is inserted into the stepped receptacle 15.
  • the spark plug 8 is thereby inserted into the spark plug sleeve 6 by means of the flange 35 fixed.
  • the insertion of the spark plug 8 into the receptacle 15 is preferably carried out after the heat treatment of the spark plug sleeve 6, which is still in the heated state.
  • the material-specific shrinkage of the spark plug sleeve 6 is used in a targeted manner as part of the production strategy in order to generate an additional frictional connection between the flange 35 and the spark plug 8. This is necessary in order to achieve a seal between the flange and the insulator body 7.
  • a spark plug 40 having an insulator body 39 is designed, for example, as a sliding spark plug 41.
  • the ignition spark does not, as in the exemplary embodiment according to FIG. 2, jump directly as an air spark over from the center electrode to the hoop-like ground electrode on the spark plug sleeve. Instead, it is a sliding spark which, proceeding from a center electrode 42, flows along one end of the insulator foot 43 formed on the insulator body 39 to the ground electrode 44. The spark covers this sliding spark gap by sliding over the surface of the insulator base 43 and then jumping onto the ground electrode 44.
  • the spark plug sleeve 37 is provided with an external thread 45 by means of which it can be screwed into the cylinder head 1 according to FIG. 1, as shown in FIG. A receptacle 46, which has steps with different diameters and runs eccentrically to the longitudinal center axis of the spark plug sleeve 37, receives the sliding spark plug 41. Inside a wall section 47, which is made thick-walled due to the eccentric design of the spark plug sleeve 37, the fuel channel 38 runs.
  • a feed tube 51 is inserted into the fuel channel 38, so that a fuel line 38a running inside the feed tube 51 is connected to the fuel channel 38.
  • the fuel line 38a has a radially widened bore section 52 at its end facing the spark plug sleeve 37. This thus faces the inlet of the fuel channel 38 running in the spark plug sleeve 37.
  • a check valve 53 which has a spherical locking body 54 and a valve spring 55, is inserted into the enlarged bore section 52 from the end.
  • a valve seat 56 of the check valve 53 is formed at the transition from the bore section 52 to the normal line cross section of the feed pipe 51 directly in this.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Spark Plugs (AREA)

Abstract

L'invention concerne un agencement d'une bougie d'allumage (8) dans une douille (6) de bougie d'allumage constituée d'un matériau métallique, la douille, pour la liaison à un corps isolant (7) de la bougie d'allumage (8), présentant un logement cylindrique (15) s'étendant de manière excentrique par rapport à sa partie de fixation extérieure. Cela permet d'obtenir une partie formant paroi (17) de la douille (6) de bougie d'allumage présentant une épaisseur plus importante. En outre, une électrode de masse (34) partant frontalement de la douille (6) de bougie d'allumage est située à une extrémité du logement (15) de diamètre réduit, cette électrode coopérant avec une électrode centrale (31) partant du corps isolant (7) pour produire un parcours d'étincelle d'allumage. À l'intérieur de la partie formant paroi (17) présentant une épaisseur de paroi plus importante s'étend un canal de combustible (14), dont la sortie, voisine du parcours d'étincelle d'allumage, est située dans la douille (6) de bougie d'allumage, et un clapet de non-retour (22) étant associé au canal de combustible (14). L'objet de l'invention est de disposer un dispositif améliorant le rendement d'un moteur à allumage commandé et réduisant les composants nocifs de celui-ci sur ledit moteur, d'agencer ledit dispositif de manière à réduire l'encombrement et d'améliorer la fabrication d'un dispositif correspondant. À cet effet, le clapet anti-retour (22) est inséré à partir du coté sortie du canal de combustible (14) dans celui-ci.
PCT/DE2020/100274 2019-04-08 2020-04-02 Agencement d'une bougie d'allumage dans une douille de bougie d'allumage constituée d'un matériau métallique et procédé pour sa fabrication WO2020207534A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102019109113 2019-04-08
DE102019109113.6 2019-04-08
DE102020108749.7A DE102020108749A1 (de) 2019-04-08 2020-03-30 Anordnung einer Zündkerze in einer aus einem metallischen Werkstoff bestehenden Zündkerzenhülse und Verfahren zu deren Herstellung
DE102020108749.7 2020-03-30

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WO2020207534A1 true WO2020207534A1 (fr) 2020-10-15

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3828764A1 (de) 1988-08-25 1990-03-01 Heinrich Dipl Schaeperkoetter Verfahren und vorrichtung zur veraenderung der entflammungsphase im betrieb eines ottomotors
DE19622945A1 (de) * 1996-06-07 1997-12-11 Wtz Fuer Motoren Und Maschinen Verfahren zum Betrieb von Brennkraftmaschinen
US6575192B1 (en) * 2000-11-03 2003-06-10 Caterpillar Inc Check valve for a prechamber assembly
CN2570482Y (zh) * 2002-09-29 2003-09-03 天津大学 天然气发动机预燃室内置式天然气供气装置
US20150001430A1 (en) * 2012-02-13 2015-01-01 Hyundai Heavy Indusstries Co., Ltd. Check valve for injecting gas
US20170167359A1 (en) * 2015-12-14 2017-06-15 Caterpillar Energy Solutions Gmbh Pre-chamber of an internal combustion engine
DE102017130984A1 (de) 2017-12-21 2018-04-05 FEV Europe GmbH Verbrennungsmotor mit Vorkammerzündung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3828764A1 (de) 1988-08-25 1990-03-01 Heinrich Dipl Schaeperkoetter Verfahren und vorrichtung zur veraenderung der entflammungsphase im betrieb eines ottomotors
DE19622945A1 (de) * 1996-06-07 1997-12-11 Wtz Fuer Motoren Und Maschinen Verfahren zum Betrieb von Brennkraftmaschinen
US6575192B1 (en) * 2000-11-03 2003-06-10 Caterpillar Inc Check valve for a prechamber assembly
CN2570482Y (zh) * 2002-09-29 2003-09-03 天津大学 天然气发动机预燃室内置式天然气供气装置
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