EP4103826A1 - Fremd gezündete hubkolben-brennkraftmaschine mit einem vorkammerzündsystem - Google Patents
Fremd gezündete hubkolben-brennkraftmaschine mit einem vorkammerzündsystemInfo
- Publication number
- EP4103826A1 EP4103826A1 EP21701428.1A EP21701428A EP4103826A1 EP 4103826 A1 EP4103826 A1 EP 4103826A1 EP 21701428 A EP21701428 A EP 21701428A EP 4103826 A1 EP4103826 A1 EP 4103826A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- internal combustion
- combustion engine
- ignition system
- housing
- cover
- 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.)
- Withdrawn
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 44
- 239000000463 material Substances 0.000 claims abstract description 21
- 238000010146 3D printing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 4
- 239000011796 hollow space material Substances 0.000 abstract 3
- 239000012212 insulator Substances 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910001182 Mo alloy Inorganic materials 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910001026 inconel Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 239000010421 standard material Substances 0.000 description 1
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
- 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
- F02B19/18—Transfer passages between chamber and cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P13/00—Sparking plugs structurally combined with other parts of internal-combustion engines
-
- 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
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
- H01T13/39—Selection of materials for electrodes
-
- 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
- H01T13/54—Sparking plugs having electrodes arranged in a partly-enclosed ignition chamber
-
- 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
Definitions
- the invention relates to an externally ignited reciprocating internal combustion engine with a prechamber ignition system with the features from the preamble of claim 1.
- an ignition device for igniting fuel-air mixtures in a combustion chamber of an internal combustion engine by means of a corona discharge is known, with an ignition electrode, an outer conductor surrounding the ignition electrode, which has a front and a rear end and with one between the ignition electrode and the outer conductor arranged electrical insulator, from which at least one tip of the ignition electrode protrudes.
- the at least one tip of the ignition electrode lies in a space which is shielded by a cap assigned to the insulator, which has an inside facing the insulator and an outside facing away from the insulator, as well as one or more holes through which the shielded space and one on the outside The space lying on the cap, the combustion chamber, is in communication.
- a spark plug for igniting a combustible gas mixture in an internal combustion engine comprising: an ignition electrode, an electrical supply line to which the ignition electrode is connected, an insulator body through which the supply line is passed, a housing head which sits sealingly on the insulator body and an external thread for screwing into an internal combustion engine, a tubular housing which is fastened to the housing head, surrounds the insulator body and carries a hexagon, the tubular housing having a Surrounds the insulator body holder, which is welded to the housing head via a weld seam and presses the insulator body against the housing head with a pretension.
- German laid-open specification DE 102016 120984 A1 A prechamber spark plug for a gas-operated internal combustion engine and a method for its production are known from this laid-open specification.
- a spark plug is also known from German patent application DE 102016206992 A1, from which the present invention is based.
- the spark plug is, in particular, a prechamber spark plug with a housing, an ignition electrode and a ground electrode, the ignition electrode being able to have an electrical voltage applied to it via a supply line and the supply line running at least partially within an insulator, with at least one discharge area of the housing is made of a material with a thermal conductivity of over 170 W / (m * K).
- a prechamber ignition system made of a material with a thermal conductivity of> 250 W / (m * K) is necessary ) to use.
- this material has the disadvantage in the lower left map (low speed, low load) that too much heat (energy) is lost.
- the object of the present invention is to show a measure with which the ignitability of a prechamber ignition system in a high load and / or Speed range or in the event of a late ignition of an internal combustion engine can be ensured.
- the upper part of the prechamber ignition system remains with a very strongly thermally conductive material with a thermal conductivity preferably greater than 170 W / (m * K) in order to be able to give off the excess heat to the cylinder head.
- the cap material of the cover of the prechamber ignition system is designed according to the invention in such a way that in the nominal power point (area of the highest power output of the internal combustion engine) no pre-ignition occurs but is as hot as possible.
- materials with a thermal conductivity of less than 170 W / (m * K) such as. B. the following alloys:
- the ignition device heats up, e.g. Legs Spark plug in the prechamber ignition system, because the heat remains in the lower part (cover area) of the prechamber ignition system.
- the cover of the prechamber ignition system (cover is the part that largely protrudes from the prechamber ignition system into the combustion chamber) is made from one of the above-mentioned materials.
- This other cover material is welded to the housing according to claim 2, for example by friction welding or fused to one another in a 3D printing process.
- Fig. 1 shows a section through an antechamber ignition system.
- Figure 1 shows a section through a prechamber ignition system 1 for an externally ignited floating piston internal combustion engine, in particular a floating piston internal combustion engine, with a housing 2, which in this embodiment is formed radially on the outside by a cylinder head material of a cylinder head 3 of the floating piston internal combustion engine.
- An ignition device 4 is arranged in the prechamber ignition system 1 and projects into a flea space 5 in the housing 2.
- a spark plug, a corona ignition system or some other ignition device for externally ignited internal combustion engines can be provided as the ignition device.
- the flea chamber 5 is covered by a cover 7 on the side facing away from the ignition device 4, opposite a combustion chamber 6 of the floating piston internal combustion engine.
- the cover 7 has at least one first opening 8 which connects the flea chamber 5 and the combustion chamber 6 to one another in a gas-carrying manner.
- two openings 8 can be seen. These openings 8 can be bores in the cover 7, for example.
- the cover 7 itself can be connected to the cylinder head 3 in a material and / or form-fitting manner or in a 3D printing process.
- a fuel injector 9 can also be seen in FIG. 1, with which fuel can be introduced into the combustion chamber 6 of the reciprocating piston internal combustion engine in order to produce a combustible fuel / air mixture in the combustion chamber 6.
- the technical problem is solved by using a combination material for the prechamber ignition system 1.
- the upper part of the prechamber ignition system 1 (in the area of the ignition device 4) remains a very highly thermally conductive material with a thermal conductivity preferably> 170 W / (m * K) in order to be able to give off the excess heat to the cylinder head 3.
- the material of the cover 7 of the prechamber ignition system 1 is designed according to the invention in such a way that in the nominal power point (area of the highest power output of the internal combustion engine) no pre-ignition occurs but is as hot as possible.
- Materials with a thermal conductivity ⁇ 170 W / (m * K), such as the following alloys, are suitable for this purpose:
- the low load for the externally ignited internal combustion engine and retarded ignition times can be achieved, since only little energy is lost from the combustion in the prechamber ignition system 1 on the way into the combustion chamber 6.
- the cover of the prechamber ignition system 1 is made from one of the above-mentioned materials and not from the standard material of the housing 2.
- the inventive design of the prechamber ignition system 1 can be used both for passive prechamber ignition systems, as shown here, and for active prechamber ignition systems , with its own introduction of fuel into the cavity 5, can be used.
- the housing 2 can also be formed as a separate housing 2, which is introduced into the cylinder head 3, instead of the cylinder head material.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020103863.1A DE102020103863B4 (de) | 2020-02-14 | 2020-02-14 | Fremd gezündete Hubkolben-Brennkraftmaschine mit einem Vorkammerzündsystem |
| PCT/EP2021/050912 WO2021160374A1 (de) | 2020-02-14 | 2021-01-18 | Fremd gezündete hubkolben-brennkraftmaschine mit einem vorkammerzündsystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4103826A1 true EP4103826A1 (de) | 2022-12-21 |
Family
ID=74215902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21701428.1A Withdrawn EP4103826A1 (de) | 2020-02-14 | 2021-01-18 | Fremd gezündete hubkolben-brennkraftmaschine mit einem vorkammerzündsystem |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12140070B2 (de) |
| EP (1) | EP4103826A1 (de) |
| CN (1) | CN114746633A (de) |
| DE (1) | DE102020103863B4 (de) |
| WO (1) | WO2021160374A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023004631B4 (de) * | 2023-11-15 | 2026-03-05 | Mercedes-Benz Group AG | Vorkammerzündeinrichtung für eine Verbrennungskraftmaschine sowie Verbrennungskraftmaschine für ein Kraftfahrzeug |
Family Cites Families (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3303048C2 (de) | 1982-06-18 | 1984-11-29 | Feldmühle AG, 4000 Düsseldorf | Vor- oder Wirbelkammer für Verbrennungsmotoren und Verfahren zu deren Herstellung |
| US5345758A (en) * | 1993-04-14 | 1994-09-13 | Adroit Systems, Inc. | Rotary valve multiple combustor pulse detonation engine |
| JPH10325379A (ja) * | 1997-05-23 | 1998-12-08 | Honda Motor Co Ltd | 燃料噴射式内燃機関 |
| US6460506B1 (en) * | 2000-09-14 | 2002-10-08 | Caterpillar Inc. | Spark plug having an encapsulated electrode gap |
| FR2846044B1 (fr) * | 2002-10-18 | 2006-07-14 | Peugeot Citroen Automobiles Sa | Dispositif d'allumage a prechambre revetue d'un revetement refractaire, pour un moteur a combustion interne, et allumeur a prechambre |
| FR2846043B1 (fr) | 2002-10-18 | 2006-07-07 | Peugeot Citroen Automobiles Sa | Moteur a combustion interne a injection directe et bougie a prechambre, procede d'allumage et application |
| FR2846042B1 (fr) | 2002-10-18 | 2005-02-04 | Peugeot Citroen Automobiles Sa | Dispositif d'allumage a prechambre realisee dans un materiau a conductivite thermique elevee, pour un moteur a combustion interne, et allumeur a prechambre |
| US20050000484A1 (en) * | 2003-07-03 | 2005-01-06 | Schultz James M. | Pre-chambered type spark plug with a flat bottom being aligned with a bottom surface of a cylinder head |
| WO2007092972A1 (de) | 2006-02-17 | 2007-08-23 | Ge Jenbacher Gmbh & Co Ohg | Zündkerze |
| DE102006043593B3 (de) | 2006-09-16 | 2008-04-10 | Multitorch Gmbh | Zündkerze |
| DE102009000956A1 (de) * | 2009-02-18 | 2010-08-19 | Robert Bosch Gmbh | Laserzündkerze und Vorkammermodul hierfür |
| KR100990206B1 (ko) * | 2009-10-14 | 2010-10-29 | 정인태 | 내연기관의 점화플러그 |
| US8912716B2 (en) * | 2011-03-21 | 2014-12-16 | Denso International America, Inc. | Copper core combustion cup for pre-chamber spark plug |
| US9217360B2 (en) * | 2011-12-01 | 2015-12-22 | Cummins Intellectual Property, Inc. | Prechamber device for internal combustion engine |
| DE102014111897B4 (de) | 2013-10-31 | 2020-06-25 | Borgwarner Ludwigsburg Gmbh | Zündeinrichtung zum Zünden von Brennstoff-Luft-Gemischen in einer Brennkammer eines Verbrennungsmotors durch eine Korona-Entladung |
| WO2017031482A1 (en) | 2015-08-20 | 2017-02-23 | Michael Fitzgerald | Modular space tether |
| DE102016206992A1 (de) | 2016-04-25 | 2017-10-26 | Dkt Verwaltungs-Gmbh | Zündkerze |
| DE102016120984B4 (de) | 2016-11-03 | 2018-10-18 | Federal-Mogul Ignition Gmbh | Vorkammerzündkerze für eine mit Gas betriebene Brennkraftmaschine und Verfahren zu deren Herstellung |
| WO2018087418A1 (en) | 2016-11-14 | 2018-05-17 | Wärtsilä Finland Oy | Prechamber component and method of manufacturing same |
| US10837355B2 (en) | 2017-12-28 | 2020-11-17 | Honda Motor Co., Ltd. | Internal combustion engine |
| EP3514346A1 (de) | 2018-01-23 | 2019-07-24 | Ricoh Company, Ltd. | Zündvorrichtung und verbrennungsmotor |
| DE102018206784A1 (de) * | 2018-05-03 | 2019-11-07 | Robert Bosch Gmbh | Vorkammer-Zündkerze |
| JP7159810B2 (ja) * | 2018-11-22 | 2022-10-25 | トヨタ自動車株式会社 | 副室付内燃機関 |
| DE102018221429A1 (de) | 2018-12-11 | 2020-06-18 | Robert Bosch Gmbh | Vorkammerzündkerzenkappe, Verfahren zu deren Herstellung und Vorkammerzündkerze |
| JP7001634B2 (ja) * | 2019-05-07 | 2022-01-19 | 日本特殊陶業株式会社 | スパークプラグ |
-
2020
- 2020-02-14 DE DE102020103863.1A patent/DE102020103863B4/de active Active
-
2021
- 2021-01-18 CN CN202180006908.1A patent/CN114746633A/zh not_active Withdrawn
- 2021-01-18 WO PCT/EP2021/050912 patent/WO2021160374A1/de not_active Ceased
- 2021-01-18 EP EP21701428.1A patent/EP4103826A1/de not_active Withdrawn
- 2021-01-18 US US17/799,481 patent/US12140070B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102020103863B4 (de) | 2023-04-27 |
| WO2021160374A1 (de) | 2021-08-19 |
| CN114746633A (zh) | 2022-07-12 |
| US20230070311A1 (en) | 2023-03-09 |
| US12140070B2 (en) | 2024-11-12 |
| DE102020103863A1 (de) | 2021-08-19 |
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