WO2020150758A1 - Moteur a combustion interne refroidi par liquide - Google Patents

Moteur a combustion interne refroidi par liquide Download PDF

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Publication number
WO2020150758A1
WO2020150758A1 PCT/AT2020/060015 AT2020060015W WO2020150758A1 WO 2020150758 A1 WO2020150758 A1 WO 2020150758A1 AT 2020060015 W AT2020060015 W AT 2020060015W WO 2020150758 A1 WO2020150758 A1 WO 2020150758A1
Authority
WO
WIPO (PCT)
Prior art keywords
prechamber
sealing
internal combustion
combustion engine
fuel supply
Prior art date
Application number
PCT/AT2020/060015
Other languages
German (de)
English (en)
Inventor
Christof Knollmayr
Andreas Zurk
Martin KLAMPFER
Andreas Puschnik
Original Assignee
Avl List 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 Avl List Gmbh filed Critical Avl List Gmbh
Priority to DE112020000476.7T priority Critical patent/DE112020000476A5/de
Publication of WO2020150758A1 publication Critical patent/WO2020150758A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/12—Engines characterised by precombustion chambers with positive ignition
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/12—Arrangements for cooling other engine or machine parts
    • F01P3/16—Arrangements for cooling other engine or machine parts for cooling fuel injectors or sparking-plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
    • F02B19/1004—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder details of combustion chamber, e.g. mounting arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
    • F02B19/1019—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber
    • F02B19/108—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder with only one pre-combustion chamber with fuel injection at least into pre-combustion chamber, i.e. injector mounted directly in the pre-combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/16—Chamber shapes or constructions not specific to sub-groups F02B19/02 - F02B19/10
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B43/00—Engines characterised by operating on gaseous fuels; Plants including such engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/242—Arrangement of spark plugs or 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
    • 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
    • F02M21/0281—Adapters, sockets or the like to mount injection valves onto engines; Fuel guiding passages between injectors and the air intake system or the combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2201/00—Fuels
    • F02B2201/04—Gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/26—Cylinder heads having cooling means
    • F02F1/36—Cylinder heads having cooling means for liquid cooling
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/855—Mounting of fuel injection apparatus using clamp elements or fastening means, e.g. bolts or screws
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine
    • 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
    • F02M55/004—Joints; Sealings
    • 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
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
    • 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 a liquid-cooled internal combustion engine with at least one cylinder head, which has at least one coolant chamber, with at least one prechamber arranged in the cylinder head, which is formed by at least one prechamber component, which has a fuel supply device for supplying fuel gas, the fuel supply device being fixed in one the prechamber component connected sealing sleeve is arranged, which is fluid-tightly connected to the prechamber component at its first end facing the prechamber component.
  • the gas fuel supply device is generally arranged as close as possible to the actual ignition location of the prechamber in order to keep the volume of damage as small as possible and to avoid the associated adverse effects on the combustion.
  • coolant rooms in the area of the pre-comb components and other structural constraints can sometimes make it difficult to minimize the volume of damage.
  • the object of the invention is to keep the damage volume in the fuel supply, in particular fuel gas supply, as low as possible in internal combustion engines with coolant spaces in the cylinder head.
  • the object is achieved in that the fuel supply device is arranged in a sealing sleeve which is fixedly connected to the prechamber component and is connected in a liquid-tight manner to the prechamber component at its first end facing the prechamber component.
  • the mouth of the fuel supply device can be brought very close to the ignition location of the prechamber.
  • the ignition location of an ignition device opening into the prechamber is arranged in the region of a longitudinal axis of the prechamber. The volume of damage can thus be kept to a minimum.
  • the sealing sleeve can be arranged adjacent to the coolant space or can be guided through it.
  • the cross section of the prechamber part can be circular, but may also deviate from a circular shape.
  • a first sealing element is arranged between the sealing sleeve in the region of its first end and a first sealing surface of the chamber component, the first sealing surface preferably being arranged normal to a longitudinal axis of the sealing sleeve. The first sealing element ensures the coolant-side sealing of the fuel supply device from the coolant space.
  • the fuel-side sealing of the fuel supply device advantageously takes place in that a second sealing element is arranged between the fuel supply device in the region of its first end and a second sealing surface of the prechamber component, the second sealing surface preferably being arranged normally to a longitudinal axis of the fuel supply device.
  • the seal can be made by direct contact between the fuel supply device and the prechamber component by means of a sealing seat or a squeezing edge.
  • a separate second sealing element can be omitted.
  • the necessary sealing forces can be applied in that the fuel supply device is non-positively connected to the antechamber component via a clamping element, the fuel supply device being pressed by the clamping element via the second sealing element to the antechamber component.
  • the clamping element can be screwed to the sealing sleeve, for example.
  • an embodiment variant of the invention provides that the sealing sleeve at its second end facing away from the prechamber component is connected to the cylinder head in a liquid-tight manner via a holding part, at least a third sealing element between the holding part and the cylinder head and / or at least a fourth sealing element is net angeord between the holding part and the sealing sleeve.
  • the sealing sleeve is preferably screwed to the prechamber component.
  • the sealing sleeve can be mounted on the prechamber component by means of an external thread or an internal thread.
  • the sealing sleeve is formed by an essentially hollow cylindrical tube.
  • the prechamber component can be formed in one part or in several parts.
  • the prechamber component borders the coolant chamber
  • the coolant chamber in one of the combustion chamber facing away region of the prechamber component is covered by a preferably plate-shaped wall part, preferably the wall part is sealed against the prechamber component via a fifth sealing element and against the cylinder head via a sixth sealing element.
  • Figure 1 shows a cylinder head of an internal combustion engine according to the invention in a longitudinal section in a first embodiment.
  • FIG. 2 shows detail II from FIG. 1;
  • FIG. 3 shows a cylinder head of an internal combustion engine according to the invention in a longitudinal section in a second embodiment variant
  • Fig. 4 shows a cylinder head of an internal combustion engine according to the invention in a longitudinal section in a third embodiment.
  • the figures each show a cylinder head 1 of a spark-ignited gas internal combustion engine, which includes a prechamber 2, which can be made in one or more parts.
  • the prechamber 2 is formed in two parts and has a first prechamber component 3 and a lower second prechamber component 4, which together span the prechamber 2.
  • the prechamber 2 is arranged in the region of the cylinder axis la of a cylinder of the internal combustion engine, the high axis 2a of the prechamber 2 coinciding with the cylinder axis la in the exemplary embodiments.
  • the antechamber 2 is connected to the combustion chamber 6 of a cylinder (not shown) via overflow openings 5.
  • an igniter 7 with a defined ignition location 8 in the region of the vertical axis 2a of the prechamber 2 opens into the prechamber 2 in the upper first prechamber component 3.
  • a fuel supply device 9 is mounted as close as possible to the prechamber 2, via which fuel gas can be supplied to the prechamber 2 through an orifice 29.
  • the longitudinal axis 9a of the fuel supply device 9 is here inclined at an angle a of approximately 30 ° with respect to the vertical axis 2a of the prechamber 2.
  • the angle a is generally between about 15 ° and 75 °, in particular between about 25 ° and 60 °.
  • a first end of the fuel supply device 9 facing the prechamber 2 is designated by 9b, a second end of the fuel supply device facing away from the first end 9b is designated by 9c.
  • an additional sealing sleeve 11 which fulfills the coolant-side seal to the fuel supply device 9.
  • the longitudinal axis 11a of the sealing sleeve 11 is preferably arranged coaxially with the longitudinal axis 9a of the fuel supply device 9.
  • a first end of the sealing sleeve 11 facing the chamber 2 is designated 11b, a second end of the sealing sleeve 11 facing away from the first end 11b is designated 11c.
  • This coolant-side sealing is carried out directly or indirectly, for example by means of a first sealing element 12 between the sealing sleeve 11 and the first prechamber component 3.
  • a first sealing element 12 - for example a sealing ring - between the sealing sleeve 11 in the region of the first end 11b of the sealing sleeve 11 and one arranged first sealing surface 13 of the first prechamber component 3.
  • the first sealing surface 13 is arranged here normal to the longitudinal axis 11a of the sealing sleeve 11.
  • the gas-side sealing device takes place directly or by means of a second sealing element 14 between the fuel supply device 9 and a second sealing surface 15 of the first chamber component 3.
  • the second sealing surface 15 is also formed here normal to the longitudinal axis 11a of the sealing sleeve 11.
  • the first sealing surface 13 and the second sealing surface 15 are located in different normal planes egg, £ 2 on the longitudinal axes 9a, 11a, wherein in the exemplary embodiments the first normal plane egg with the first sealing surface 13 is further apart from the prechamber 2 than the second Normal plane £ 2 with the second sealing surface 15.
  • the second sealing element 14 can also be omitted - in this case, the sealing takes place directly via a corresponding sealing seat or a squeezing edge of the fuel supply device 9.
  • the fuel supply device 9 is non-positively and interchangeably connected via a sleeve-shaped clamping element 16 to the first chamber component 3, in the illustrated embodiment the fuel supply device 9 by the clamping element 16 via the second sealing element 14 to the first Pre-chamber component 3 is pressed. This ensures that no coolant reaches the fuel supply device 9.
  • the clamping element 16 is firmly connected to the sealing sleeve 11 by a clamping connection 29.
  • the clamping element 16 on the one hand with the sealing sleeve 11 firmly connected by a clamping connection 29 and on the other hand Fastening screws 30 to be screwed to the cylinder head 1. This enables light an uncomplicated and rapid replacement of the fuel supply device 9.
  • the sealing sleeve 11 is at its averted the first prechamber component 3 two th end 11c via a holding part 17 with the cylinder head 1 in a liquid-tight manner.
  • third sealing surface 19 of the cylinder head 1 is at least a third sealing element 18 and between the holding part 19 and a cylindrical fourth sealing surface 21 of the sealing sleeve 11 at least a fourth sealing device 20 is arranged.
  • the sealing sleeve 11 is firmly connected to the first prechamber component 3, for example via a screw connection 22.
  • the sealing sleeve 11 has an external thread in the region of its first end 9b and the first prechamber component 3 has an internal thread.
  • the sealing sleeve 11 is screwed with its external thread into the internal thread of the first prechamber component 3.
  • the first prechamber component 3 is provided with an external thread and the sealing sleeve 11 at its first end 11b with an internal thread.
  • the sealing sleeve 11 is screwed with its internal thread into the external thread of the first prechamber component 3.
  • the coolant chamber 10 in a region of the first prechamber component 3 facing away from the combustion chamber 6 is covered by an, for example, plate-shaped wall part 23.
  • the wall part 23 is sealed against a fifth cylindrical sealing surface 25 of the first prechamber component 3 by means of an annular fifth sealing element 24 and against a sixth sealing surface 27 of the cylinder head 1 which is arranged normally on the cylinder axis 1 a via a sixth sealing element 26.
  • the wall part 23 thus seals the coolant chamber 10 from an oil chamber 28 of the cylinder head 1 arranged above it.
  • the sealing elements 12, 14, 18, 20, 24, 26 can be formed for example by sealing rings, flat seals, profile seals, O-rings or the like.
  • At least individual parts of the cylinder head can be printed in 3-D.

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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)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

L'invention concerne un moteur à combustion interne refroidi par liquide, en particulier un moteur à gaz, comportant au moins une culasse (1) qui présente au moins une chambre de refroidissement (10), au moins une préchambre (2) disposée dans la culasse (1) et formée par au moins un élément de préchambre (3), un dispositif d'alimentation en carburant (9), en particulier un dispositif d'alimentation en carburant gazeux, relié à l'élément de préchambre (3) débouchant dans la préchambre (2). Afin de maintenir le volume endommagé lors de l'alimentation en carburant aussi bas que possible, le dispositif d'alimentation en carburant (9) est disposé dans un manchon d'étanchéité (11) qui est fermement relié à l'élément de préchambre (3) et qui est relié de manière étanche aux liquides à l'élément de préchambre (3) à sa première extrémité (11b) tournée vers l'élément de préchambre (3).
PCT/AT2020/060015 2019-01-22 2020-01-22 Moteur a combustion interne refroidi par liquide WO2020150758A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112020000476.7T DE112020000476A5 (de) 2019-01-22 2020-01-22 Flüssigkeitsgekühlte Brennkraftmaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50044/2019A AT522050B1 (de) 2019-01-22 2019-01-22 Flüssigkeitsgekühlte brennkraftmaschine
ATA50044/2019 2019-01-22

Publications (1)

Publication Number Publication Date
WO2020150758A1 true WO2020150758A1 (fr) 2020-07-30

Family

ID=69423034

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2020/060015 WO2020150758A1 (fr) 2019-01-22 2020-01-22 Moteur a combustion interne refroidi par liquide

Country Status (4)

Country Link
CN (1) CN113330208A (fr)
AT (2) AT522050B1 (fr)
DE (2) DE112020000478A5 (fr)
WO (1) WO2020150758A1 (fr)

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DE102020126695A1 (de) 2020-10-12 2022-04-14 Bayerische Motoren Werke Aktiengesellschaft Zündvorrichtung mit einer versatzfrei drehbar mit einer Zündquelle gekoppelten Vorkammer, Verbrennungskraftmaschine mit einer Zündvorrichtung und Kraftfahrzeug mit einer Verbrennungskraftmaschine
DE102020133717A1 (de) 2020-12-16 2022-06-23 Bayerische Motoren Werke Aktiengesellschaft Zündvorrichtung mit einer versatzfrei drehbar mit einer Zündquelle gekoppelten Vorkammer, Verbrennungskraftmaschine mit einer Zündvorrichtung und Kraftfahrzeug mit einer Verbrennungskraftmaschine
US11552456B1 (en) 2022-01-10 2023-01-10 Federal-Mogul Ignition Llc Pre-chamber spark plug
CN115355081B (zh) * 2022-10-14 2023-03-21 潍柴动力股份有限公司 一种预燃室及缸盖
US11757262B1 (en) 2022-12-28 2023-09-12 Federal-Mogul Ignition Gmbh Prechamber spark plug and method of manufacturing the same

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AT522050A1 (de) 2020-08-15
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DE112020000478A5 (de) 2021-11-18
AT522053B1 (de) 2020-10-15
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