WO2004036709A1 - Dispositif d'allumage a prechambre realisee dans un materiau a conductivite thermique elevee, pour un moteur a combustion interne, et allumeur a prechambre - Google Patents
Dispositif d'allumage a prechambre realisee dans un materiau a conductivite thermique elevee, pour un moteur a combustion interne, et allumeur a prechambre Download PDFInfo
- Publication number
- WO2004036709A1 WO2004036709A1 PCT/FR2003/003083 FR0303083W WO2004036709A1 WO 2004036709 A1 WO2004036709 A1 WO 2004036709A1 FR 0303083 W FR0303083 W FR 0303083W WO 2004036709 A1 WO2004036709 A1 WO 2004036709A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- prechamber
- ignition device
- passages
- igniter
- thermal conductivity
- Prior art date
Links
Classifications
-
- 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
-
- 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
- F02P9/00—Electric spark ignition control, not otherwise provided for
- F02P9/002—Control of spark intensity, intensifying, lengthening, suppression
- F02P9/007—Control of spark intensity, intensifying, lengthening, suppression by supplementary electrical discharge in the pre-ionised electrode interspace of the sparking plug, e.g. plasma jet ignition
Definitions
- Prechamber ignition device made of a material with high thermal conductivity, for an internal combustion engine, and prechamber igniter
- the present invention relates to an ignition device for an internal combustion engine, as well as to a prechamber igniter.
- the ignition device comprises a prechamber igniter which can be screwed in place of a conventional spark plug without modification of the cylinder head of the internal combustion engine (diameter less than or equal to 14 mm), the means for igniting an oxidant and fuel mixture being contained in a prechamber defined by a body the head of which is provided with passages.
- the igniter prechamber when the prechamber igniter is mounted in the cylinder head of the engine, the igniter prechamber is separated from the main combustion chamber of the engine by the head of the prechamber body and communicates with the main combustion chamber through the intermediate passages made in this head.
- the prechamber igniter may optionally be provided with means making it possible to introduce the reactants directly into the prechamber.
- US Patent 4,926,818 describes a device and a method for generating pulsed jets intended to form vortex combustion pockets.
- the device described comprises a main chamber containing a main fuel mixture in which moves a piston and a prechamber receiving reagents and communicating with the main chamber through orifices made in a wall.
- the ignition of the reactants in the prechamber produces jets of gas in combustion, which ignite the main mixture contained in the main chamber by convection of the flame front.
- Patent application FR 2 781 840 describes an ignition device for an internal combustion engine comprising:
- a main chamber intended to contain a main combustible mixture, and provided with a system for compressing said mixture
- a prechamber intended to receive reagents and communicating with the main chamber through orifices made in a wall separating the main chamber from the prechamber, - an ignition system for the reagents contained in the prechamber.
- the orifices are of small diameter and able to prevent the passage of a flame front while allowing the passage of unstable compounds originating from the combustion of the reagents contained in the prechamber.
- the compression system and the seeding of the main mixture with unstable compounds allow mass self-ignition of the initial mixture.
- Patent application FR 2 810 692 also relates to an ignition device of an internal combustion engine comprising a prechamber of generally cylindrical shape, similar to that described in application FR 2 781 840, but whose passages communicating with the chamber main combustion are circumscribed by a circular curve passing through the outermost passage centers, the diameter of this circular curve being in a ratio less than or equal to VI with the diameter of the cylindrical prechamber.
- This arrangement allows the engine to operate with a small quantity of combustion air, in particular when the composition of the air-fuel mixture in the main chamber is stoichiometric, for reasons of pollution control with a three-way catalyst.
- the present invention relates to an ignition device for an internal combustion engine which can have the following advantages: - reduction in the fuel enrichment of the air-fuel mixture when the engine is running at full load,
- the invention relates to an ignition device of an internal combustion engine, comprising:
- a main chamber intended to contain a main combustible mixture, and provided with a system for compressing said mixture, an igniter comprising a prechamber intended to receive reagents and a system for igniting the reagents contained in the prechamber, said prechamber being defined by a prechamber body having a head comprising at least one passage, said head of the prechamber body separating the prechamber of the main bedroom and communicating the prechamber and the main bedroom through the passage (s).
- said prechamber body is made of a material having a thermal conductivity at 20 ° C of at least 10 W / K / m.
- the prechamber body is made of a material having a thermal conductivity at 20 ° C of at least 30 W / K / m, better still at least 50 W / K / m.
- the thermal conductivity at 20 ° C of the material from which the body of the prechamber is made does not exceed 350 W / K / m.
- the prechamber body according to the invention one can use any type of material whose thermal conductivity is as defined above and which is capable of withstanding the temperature and pressure constraints due to the operation of the ignition device.
- copper alloys can be used.
- the material constituting the prechamber body according to the invention is chosen from binary brasses, cupro-nickel, cupro-aluminum and nickel silver.
- the alloys CuZn5, CuZn10, CuZn15, CuZn30, CuZn33, CuZn36, CuZn36, CuNi44Mn, CuNi ⁇ F, CuAI5, CuNi2, CuNi21, CuNi10 CuZn ⁇ alloy whose thermal conductivity at 20 ° C is 234 W / (mK).
- the composition of these alloys is given by standard NF A51 -101
- a particularly preferred material for the prechamber body according to the invention is the alloy CuCrI Zr, the thermal conductivity of which
- 20 ° C is 320 W / K / m.
- This alloy comprises, by weight, more than 0.4% of chromium, from 0.02 to 0.1% of zirconium, the complement to 100% being copper.
- These alloys with high thermal conductivity are particularly suitable for prechamber igniters intended to be used with highly supercharged internal combustion engines, that is to say having an effective average pressure greater than or equal to 13 bars. Mention may be made, for example, of motors for compressors or turbochargers.
- the use of such a material according to the invention makes it possible to better dissipate the energy at the level of the body of the prechamber and thus to avoid the appearance of hot spots.
- the combustion mode resulting from the use of the ignition device according to the invention ensures a combustion speed sufficient to dispense with an increase in the combustion speed via aerodynamics.
- the main mixture contained in the main chamber is ignited by convection of the flame front resulting from the ignition of the reagents contained in the prechamber.
- the passage or passages are preferably of cylindrical shape and of diameter greater than 1 mm.
- the passage or passages are capable of preventing the propagation of a flame front while allowing the propagation of unstable compounds originating from the combustion of the reagents contained in the prechamber, the compression system of the main chamber and seeding the main mixture with said unstable compounds allowing mass self-ignition of the main mixture.
- Self-ignition in a large volume allows a very rapid pressure build-up, a reduction in knocking and good repeatability.
- the said passage or passages are preferably of cylindrical shape and of diameter less than or equal to 1 mm. More preferably, the said passage or passages have a length less than or equal to their diameter. By length is meant the dimension of the passages in a direction perpendicular to the surface of the partition wall. In this way, the least possible of unstable compounds are trapped on the walls.
- the number of passage (s) is between 1 and 20, preferably between 3 and 15.
- the upper part of the prechamber body, not attached to the main chamber has the shape of a cylinder of internal diameter ⁇ , and
- the head of the prechamber body comprises several passages, said passages being circumscribed by a circular curve of diameter d 2 passing through the centers of the outermost passages, the ratio d 2 / ⁇ being less than or equal to 0.5.
- the ratio d 2 / ⁇ is less than or equal to 1/3.
- the center of the curve passing through the centers of the outermost passages is located on the axis of symmetry of the prechamber.
- the center of the curve passing through the centers of the outermost passages can be located at a distance d 3 from the axis of symmetry of the prechamber, equal to or greater than a quarter of the diameter ⁇ of the prechamber.
- the invention also relates to an igniter for an internal combustion engine comprising a prechamber defined by a prechamber body having a head provided with at least one passage, the prechamber being intended to contain a combustible mixture, and a system for igniting the mixture.
- fuel contained in the prechamber said prechamber body being made of a material having a thermal conductivity at 20 ° C of at least 10 W / K / m, preferably at least 30 W / K / m, better at least 50 W / K / m, and less than or equal to 350 W / K / m.
- the prechamber body is made of a copper alloy. More preferably, the material constituting the prechamber body according to the invention is chosen from binary brasses, cupro-nickel, cupro-aluminum and nickel silver.
- a particularly preferred material for the prechamber body of the igniter according to the invention is the CuCrIZr alloy, the thermal conductivity of which at 20 ° C. is 320 W / K / m.
- Figure 1 shows a schematic view, partially in section, of an ignition device comprising a prechamber igniter according to the invention.
- Figure 2 shows a schematic view in vertical section of the prechamber body of an igniter according to the invention.
- Figure 3 is a bottom view of the head of a prechamber body of an igniter according to the invention.
- a cylinder of an internal combustion engine shown in the
- Figure 1 comprises a main chamber 1 delimited by a jacket (not shown) and closed above by a cylinder head 10.
- the main chamber 1 contains a piston (not shown) actuated in translation by a connecting rod (not shown) .
- An igniter 11 with prechamber according to the invention is fixed in the cylinder head 10 so as to be adjacent to the main chamber 1, for example by screwing into a thread 10a of the cylinder head 10.
- the igniter 1 1 comprises a prechamber body 12, of generally tubular shape, comprising a head 12a, preferably having the shape of a spherical cap, defining a prechamber 2.
- the head 12a of the prechamber body 12 constitutes a partition wall between the main chamber 1 and the prechamber 2.
- the head 12a communicates the prechamber 2 with the main chamber 1 via passages (15).
- the prechamber body 12 is made of a material having a thermal conductivity at 20 ° C of at least 10 W / K / m, preferably at least 20 W / K / m, better still at least 50 W / K / m.
- the thermal conductivity at 20 ° C of the material from which the prechamber body is made does not exceed 350 W / K / m.
- the prechamber body 12 is produced from the CuCrIZr alloy, the thermal conductivity of which at 20 ° C. is 320 W / K / m.
- the prechamber 2 has a volume of between 0.2 cm 3 and 2 cm 3 , preferably between 0.5 cm 3 and 1.5 cm 3 .
- the S / V ratio between the sum of the sections of the passages 1 ⁇ of the prechamber and the volume of the prechamber is between 10 "3 mm " 1 and ⁇ .10 "2 mm “ 1 .
- the igniter may also include an inlet (not shown) allowing the pre-chamber 2 to be supplied with a mixture of air-fuel reagents formed upstream or to introduce fuel, the air being mixed with the fuel in the pre-chamber 2.
- the prechamber is provided with an ignition system comprising a central electrode 13 and a ground electrode 14.
- the interelectrode space is for example of the order of 0.7 mm.
- the passages 15 are orifices preferably having a diameter greater than 1 mm.
- the passages 15 When it is desired to prevent, during ignition, the passage of a flame front while allowing the passage of unstable compounds (ignition of the main mixture by self-ignition), the passages 15 then have a small diameter, generally less than 1 mm, and, advantageously, a length less than their diameter.
- the passages 1 ⁇ advantageously belong to a circle of diameter d 2 corresponding substantially to half the diameter ⁇ of the prechamber.
- the center of this circle can be on the axis of symmetry 2b of the prechamber 2, as shown in Figure 2.
- the center of this circle can also be located at a distance d 3 from the axis of symmetry 2b of the prechamber 2, as shown in Figure 3, on which passages 15 8 in number have been shown.
- An air-fuel mixture is introduced into the main chamber and the prechamber 2 is supplied.
- a spark is then produced between the electrodes 13 and 14, thereby initiating combustion in the prechamber 2, so that the temperature and the pressure increase. her breast.
- the high thermal conductivity of the prechamber body allows energy to be evacuated at the level of the prechamber body and thus avoids the appearance of hot spots.
- the resulting combustion mode ensures a sufficient combustion speed to dispense with an increase in the combustion speed via aerodynamics. We can thus reduce the enrichment when the engine is running at full load. The phenomenon of rattling is also considerably reduced.
Landscapes
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03778403A EP1556932B1 (fr) | 2002-10-18 | 2003-10-17 | Dispositif d'allumage a prechambre realisee dans un materiau a conductivite thermique elevee, pour un moteur a combustion interne, et allumeur a prechambre |
DE60322089T DE60322089D1 (de) | 2002-10-18 | 2003-10-17 | Zündvorrichtung mit vorzündkammer hergestellt aus einem material mit höher thermischer leitfähigkeit, für verbrennungsmotor und zünder mit vorzündkammer |
US10/531,722 US7104245B2 (en) | 2002-10-18 | 2003-10-17 | Precombustion chamber ignition device made of a material with high thermal conductivity for an internal combustion engine, and precombustion chamber igniter |
JP2004544402A JP2006503218A (ja) | 2002-10-18 | 2003-10-17 | 高熱伝導材からつくった前燃焼室を有する内燃機関用点火装置と前燃焼室を有する点火器 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0213017 | 2002-10-18 | ||
FR0213017A FR2846042B1 (fr) | 2002-10-18 | 2002-10-18 | Dispositif d'allumage a prechambre realisee dans un materiau a conductivite thermique elevee, pour un moteur a combustion interne, et allumeur a prechambre |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004036709A1 true WO2004036709A1 (fr) | 2004-04-29 |
Family
ID=32050530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2003/003083 WO2004036709A1 (fr) | 2002-10-18 | 2003-10-17 | Dispositif d'allumage a prechambre realisee dans un materiau a conductivite thermique elevee, pour un moteur a combustion interne, et allumeur a prechambre |
Country Status (8)
Country | Link |
---|---|
US (1) | US7104245B2 (fr) |
EP (1) | EP1556932B1 (fr) |
JP (1) | JP2006503218A (fr) |
AT (1) | ATE400912T1 (fr) |
DE (1) | DE60322089D1 (fr) |
ES (1) | ES2307997T3 (fr) |
FR (1) | FR2846042B1 (fr) |
WO (1) | WO2004036709A1 (fr) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011128190A1 (fr) * | 2010-04-13 | 2011-10-20 | Robert Bosch Gmbh | Bougie d'allumage au laser dotée d'une préchambre |
US8839762B1 (en) | 2013-06-10 | 2014-09-23 | Woodward, Inc. | Multi-chamber igniter |
US9172217B2 (en) | 2010-11-23 | 2015-10-27 | Woodward, Inc. | Pre-chamber spark plug with tubular electrode and method of manufacturing same |
US9476347B2 (en) | 2010-11-23 | 2016-10-25 | Woodward, Inc. | Controlled spark ignited flame kernel flow in fuel-fed prechambers |
EP3095981A1 (fr) * | 2015-05-22 | 2016-11-23 | Caterpillar Motoren GmbH & Co. KG | Allumage contre courant dans des moteurs à combustion interne |
US9653886B2 (en) | 2015-03-20 | 2017-05-16 | Woodward, Inc. | Cap shielded ignition system |
US9765682B2 (en) | 2013-06-10 | 2017-09-19 | Woodward, Inc. | Multi-chamber igniter |
US9840963B2 (en) | 2015-03-20 | 2017-12-12 | Woodward, Inc. | Parallel prechamber ignition system |
US9856848B2 (en) | 2013-01-08 | 2018-01-02 | Woodward, Inc. | Quiescent chamber hot gas igniter |
US9890689B2 (en) | 2015-10-29 | 2018-02-13 | Woodward, Inc. | Gaseous fuel combustion |
US9893497B2 (en) | 2010-11-23 | 2018-02-13 | Woodward, Inc. | Controlled spark ignited flame kernel flow |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2003232676A1 (en) * | 2003-05-30 | 2005-01-21 | In-Tae Johng | Ignition plugs for internal combustion engine |
JP4473802B2 (ja) * | 2005-09-15 | 2010-06-02 | ヤンマー株式会社 | 火花点火機関 |
JP2007113536A (ja) * | 2005-10-24 | 2007-05-10 | Nissan Motor Co Ltd | 副室式内燃機関 |
US7798118B2 (en) * | 2007-01-12 | 2010-09-21 | Econo Plug Technologies Inc. | Method and apparatus for incorporation of a flame front—type ignition system into an internal combustion engine |
DE102009000956A1 (de) | 2009-02-18 | 2010-08-19 | Robert Bosch Gmbh | Laserzündkerze und Vorkammermodul hierfür |
US8461750B2 (en) | 2009-09-11 | 2013-06-11 | Woodward, Inc. | Pre-chamber spark plug and electrodes therefor |
DE102009047019A1 (de) * | 2009-11-23 | 2011-05-26 | Robert Bosch Gmbh | Laserzündkerze |
US9217360B2 (en) | 2011-12-01 | 2015-12-22 | Cummins Intellectual Property, Inc. | Prechamber device for internal combustion engine |
JP6030473B2 (ja) * | 2013-02-20 | 2016-11-24 | 日本特殊陶業株式会社 | 点火プラグ及びエンジン |
DE102013221963B4 (de) * | 2013-10-29 | 2019-10-17 | Dkt Verwaltungs-Gmbh | Vorkammerzündkerze |
US9593622B2 (en) * | 2015-02-09 | 2017-03-14 | Caterpillar Inc. | Combustion system, nozzle for prechamber assembly, and method of making same |
US20160053672A1 (en) * | 2015-11-05 | 2016-02-25 | Caterpillar Inc. | Fuel supply system for engine |
JP6556037B2 (ja) * | 2015-12-04 | 2019-08-07 | 株式会社デンソー | 内燃機関及び点火プラグ |
DE102016206992A1 (de) * | 2016-04-25 | 2017-10-26 | Dkt Verwaltungs-Gmbh | Zündkerze |
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 |
JP7365790B2 (ja) * | 2019-05-20 | 2023-10-20 | 株式会社デンソー | 内燃機関及びスパークプラグ |
DE102020103863B4 (de) | 2020-02-14 | 2023-04-27 | Bayerische Motoren Werke Aktiengesellschaft | Fremd gezündete Hubkolben-Brennkraftmaschine mit einem Vorkammerzündsystem |
Citations (5)
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US2047575A (en) * | 1935-07-02 | 1936-07-14 | Richard J Burtnett | Spark plug |
US4926818A (en) * | 1989-02-24 | 1990-05-22 | The Regents Of The University Of California | Pulsed jet combustion generator for premixed charge engines |
EP0896902A2 (fr) * | 1997-08-13 | 1999-02-17 | Volkswagen Aktiengesellschaft | Element de véhicule, en particulier une tête de cylindre d'une machine à combustion |
FR2781840A1 (fr) * | 1998-07-31 | 2000-02-04 | Univ Orleans | Dispositif et procede d'allumage pour moteur a combustion interne et paroi de separation correspondante |
FR2810692A1 (fr) * | 2000-06-23 | 2001-12-28 | Peugeot Citroen Automobiles Sa | Dispositif d'allumage pour moteur a combustion interne a prechambre |
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US2739578A (en) * | 1950-07-20 | 1956-03-27 | Daimler Benz Ag | Precombustion diesel engine |
US3892216A (en) * | 1973-10-23 | 1975-07-01 | Eaton Corp | Composite article and method of making same |
US4176649A (en) * | 1976-05-10 | 1979-12-04 | Toyota Motor Company, Ltd. | Emission control |
DE3303048C2 (de) * | 1982-06-18 | 1984-11-29 | Feldmühle AG, 4000 Düsseldorf | Vor- oder Wirbelkammer für Verbrennungsmotoren und Verfahren zu deren Herstellung |
JP3073118B2 (ja) * | 1993-04-20 | 2000-08-07 | 株式会社日立製作所 | 筒内噴射式内燃機関 |
-
2002
- 2002-10-18 FR FR0213017A patent/FR2846042B1/fr not_active Expired - Fee Related
-
2003
- 2003-10-17 US US10/531,722 patent/US7104245B2/en not_active Expired - Fee Related
- 2003-10-17 DE DE60322089T patent/DE60322089D1/de not_active Expired - Fee Related
- 2003-10-17 EP EP03778403A patent/EP1556932B1/fr not_active Expired - Lifetime
- 2003-10-17 JP JP2004544402A patent/JP2006503218A/ja active Pending
- 2003-10-17 WO PCT/FR2003/003083 patent/WO2004036709A1/fr active IP Right Grant
- 2003-10-17 ES ES03778403T patent/ES2307997T3/es not_active Expired - Lifetime
- 2003-10-17 AT AT03778403T patent/ATE400912T1/de not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2047575A (en) * | 1935-07-02 | 1936-07-14 | Richard J Burtnett | Spark plug |
US4926818A (en) * | 1989-02-24 | 1990-05-22 | The Regents Of The University Of California | Pulsed jet combustion generator for premixed charge engines |
EP0896902A2 (fr) * | 1997-08-13 | 1999-02-17 | Volkswagen Aktiengesellschaft | Element de véhicule, en particulier une tête de cylindre d'une machine à combustion |
FR2781840A1 (fr) * | 1998-07-31 | 2000-02-04 | Univ Orleans | Dispositif et procede d'allumage pour moteur a combustion interne et paroi de separation correspondante |
FR2810692A1 (fr) * | 2000-06-23 | 2001-12-28 | Peugeot Citroen Automobiles Sa | Dispositif d'allumage pour moteur a combustion interne a prechambre |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011128190A1 (fr) * | 2010-04-13 | 2011-10-20 | Robert Bosch Gmbh | Bougie d'allumage au laser dotée d'une préchambre |
US8701613B2 (en) | 2010-04-13 | 2014-04-22 | Robert Bosch Gmbh | Laser ignition plug with an antechamber |
US9893497B2 (en) | 2010-11-23 | 2018-02-13 | Woodward, Inc. | Controlled spark ignited flame kernel flow |
US9476347B2 (en) | 2010-11-23 | 2016-10-25 | Woodward, Inc. | Controlled spark ignited flame kernel flow in fuel-fed prechambers |
US11674494B2 (en) | 2010-11-23 | 2023-06-13 | Woodward, Inc. | Pre-chamber spark plug with tubular electrode and method of manufacturing same |
US9172217B2 (en) | 2010-11-23 | 2015-10-27 | Woodward, Inc. | Pre-chamber spark plug with tubular electrode and method of manufacturing same |
US10907532B2 (en) | 2010-11-23 | 2021-02-02 | Woodward. Inc. | Controlled spark ignited flame kernel flow in fuel-fed prechambers |
US10054102B2 (en) | 2013-01-08 | 2018-08-21 | Woodward, Inc. | Quiescent chamber hot gas igniter |
US9856848B2 (en) | 2013-01-08 | 2018-01-02 | Woodward, Inc. | Quiescent chamber hot gas igniter |
US8839762B1 (en) | 2013-06-10 | 2014-09-23 | Woodward, Inc. | Multi-chamber igniter |
US9765682B2 (en) | 2013-06-10 | 2017-09-19 | Woodward, Inc. | Multi-chamber igniter |
US9653886B2 (en) | 2015-03-20 | 2017-05-16 | Woodward, Inc. | Cap shielded ignition system |
US9840963B2 (en) | 2015-03-20 | 2017-12-12 | Woodward, Inc. | Parallel prechamber ignition system |
US9843165B2 (en) | 2015-03-20 | 2017-12-12 | Woodward, Inc. | Cap shielded ignition system |
EP3095981A1 (fr) * | 2015-05-22 | 2016-11-23 | Caterpillar Motoren GmbH & Co. KG | Allumage contre courant dans des moteurs à combustion interne |
US9890689B2 (en) | 2015-10-29 | 2018-02-13 | Woodward, Inc. | Gaseous fuel combustion |
Also Published As
Publication number | Publication date |
---|---|
US20050268882A1 (en) | 2005-12-08 |
ES2307997T3 (es) | 2008-12-01 |
FR2846042B1 (fr) | 2005-02-04 |
ATE400912T1 (de) | 2008-07-15 |
EP1556932A1 (fr) | 2005-07-27 |
EP1556932B1 (fr) | 2008-07-09 |
DE60322089D1 (de) | 2008-08-21 |
FR2846042A1 (fr) | 2004-04-23 |
JP2006503218A (ja) | 2006-01-26 |
US7104245B2 (en) | 2006-09-12 |
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