EP2304321A1 - Laserzündkerze mit vorrichtung zur beeinflussung der strömung des luft-kraftstoff-gemisches und zur verbesserung der entflammung - Google Patents
Laserzündkerze mit vorrichtung zur beeinflussung der strömung des luft-kraftstoff-gemisches und zur verbesserung der entflammungInfo
- Publication number
- EP2304321A1 EP2304321A1 EP09780577A EP09780577A EP2304321A1 EP 2304321 A1 EP2304321 A1 EP 2304321A1 EP 09780577 A EP09780577 A EP 09780577A EP 09780577 A EP09780577 A EP 09780577A EP 2304321 A1 EP2304321 A1 EP 2304321A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spark plug
- laser spark
- laser
- flow
- fluid flow
- 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- Withdrawn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
- 239000000203 mixture Substances 0.000 title description 9
- 239000000446 fuel Substances 0.000 title description 2
- 239000012530 fluid Substances 0.000 claims abstract description 74
- 238000002485 combustion reaction Methods 0.000 claims abstract description 49
- 230000005855 radiation Effects 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
-
- 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
- F02P23/00—Other ignition
- F02P23/04—Other physical ignition means, e.g. using laser rays
-
- 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
-
- 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
- F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
- F02P15/08—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q13/00—Igniters not otherwise provided for
Definitions
- the invention relates to a laser spark plug, in particular for an internal combustion engine, with means for coupling, in particular focusing, of laser radiation to an ignition point and a method for igniting a fluid in an internal combustion engine.
- Such laser spark plugs are known and are in particular at
- High efficiency engine used the operation of which is characterized by a correspondingly high turbulence level of a gas mixture in the combustion chamber. Particularly in the case of operation in the area of the lean boundary, a high turbulence level in the combustion chamber is sought to improve the thermodynamic efficiency.
- the laser spark plug in a combustion chamber side End region comprises means for influencing a fluid flow, which constitute a substantially sleeve-shaped continuation of the laser spark plug in the combustion chamber side direction and which are adapted to influence a fluid flow in the region of the ignition point.
- the means according to the invention for influencing the fluid flow in the region of the ignition point is advantageously given the opportunity to set a particularly favorable for the laser ignition fluid flow.
- the targeted influencing of a flow field according to the invention at the location of the laser ignition makes it possible to improve the flammability of the ignitable mixture in the ignition point, so that advantageous laser pulses with lower pulse energy can be used for reliable ignition.
- laser spark plug according to the invention laser systems with lower ignition pulse energies can therefore be advantageously used, which leads to low production costs of corresponding laser ignition systems and longer service lives.
- the inventive principle allows an increase in the smoothness of the internal combustion engine, which can also represent an increased efficiency or a reduction of the exhaust emissions of the internal combustion engine.
- the means for influencing the fluid flow are an integral part of the laser spark plug.
- the means according to the invention for influencing the fluid flow can, for example, advantageously be designed or connected directly in one piece with the rest of the body of the laser spark plug.
- a particularly favorable possibility for influencing the fluid flow in the region of the ignition point is given by the fact that the means according to the invention for influencing the fluid flow have a substantially hollow cylindrical basic shape and are arranged concentrically to a longitudinal axis of the laser spark plug.
- the principle of the laser spark plug according to the invention is based on the fact that the means for influencing a fluid flow at least partially foreclosure of the arranged around the ignition flow field of further, the combustion chamber side
- a deflection of the fluid flow in the combustion chamber end region of the laser spark plug is advantageously made possible by the fact that the means for influencing the fluid flow have an end face chamfered at least sectionally in its combustion chamber end region, that is, a surface normal of the relevant end face closes with the longitudinal axis of the laser spark plug a different angle from 0 °. Due to the diversion of the fluid flow according to the invention, ideal conditions can be set for the ignition in the region of the ignition point. As already explained in the other embodiments of the present invention, the turbulence level around the ignition point is also reduced in this variant of the invention. It is also conceivable, along a circumferential direction more
- a further advantageous variant of the laser spark plug according to the invention which enables an effective reduction of the turbulence size, is provided in that the means for influencing the fluid flow have at least one flow opening, the fluid connection between a region of the ignition point and a radially outside of the means for influencing the fluid flow arranges arranged area.
- a particularly precise control of the fluid flows guided through the flow openings or flow channels is given when the flow openings or flow channels have a circular or rectangular cross-section.
- the flow channels can furthermore advantageously be designed as a swirl channel.
- An improved supply of the ignition point with an ignitable fluid with simultaneously controlled flow formation is given according to another very advantageous variant of the invention in that at least one flow channel is arranged so that its longitudinal axis extends through the ignition point.
- At least one flow channel has a diameter which changes along its longitudinal axis.
- the flow channels according to the invention may also advantageously have a nozzle shape in order to set a corresponding flow behavior of the fluid present in the combustion chamber.
- a particularly advantageous configuration is given in the case of the laser spark plug according to the invention in that a preferably monolithically formed laser device with a laser-active solid and a passive Q-switching is integrated into the laser spark plug, whereby a local generation of high-energy laser pulses in the laser spark plug according to the invention is possible.
- the laser spark plug according to the invention can be used in particular in stationary engines or large gas engines, their application in the automotive sector, however, is also conceivable.
- the ignition point is also particularly advantageously selected as a function of the design of the means according to the invention for influencing the fluid flow.
- the location of the ignition point can be determined for example by the choice of a focal length of a focusing optics used, which is integrated, for example, in the means for coupling the laser radiation.
- FIG. 1 schematically shows a partial cross section of a first embodiment of a laser spark plug according to the invention
- FIG. 2 schematically shows the arrangement of the laser spark plug according to FIG. 1 in one embodiment
- Combustion chamber of an internal combustion engine is Combustion chamber of an internal combustion engine
- FIG. 1 shows a first embodiment of a laser spark plug 100 according to the invention in a partial cross section.
- the laser spark plug 100 has means 110 for coupling laser radiation 120 to an ignition point ZP in order to ignite an ignitable mixture present in the region of the ignition point ZP.
- the means 110 for coupling in the laser radiation 120 in the present case comprise a focusing optics symbolized by a biconvex lens 111 for focusing the laser radiation 120 onto the ignition point ZP. Furthermore, the means 110 for coupling in the laser radiation 120 in the present case comprise a combustion chamber window 112 optically arranged downstream of the focusing optics 111, which effects a spatial separation between a combustion-chamber-side end region 100a and the further components of the laser spark plug 100. According to the invention, the laser spark plug 100 has means 130, which are arranged in its combustion-chamber-side end region 100a, for influencing a fluid flow and which are designed to influence a fluid flow in the region of the ignition point ZP.
- the means 130 for influencing the fluid flow are an integral part of the laser spark plug 100.
- the means 130 are accordingly substantially hollow-cylindrical or sleeve-shaped continuations of the housing of the laser spark plug 100 in the direction of the combustion chamber over an end face plane 112a the combustion chamber window 112 also formed.
- FIG. 2 shows the laser spark plug 100 according to the invention from FIG. 1 in a typical installation situation in an internal combustion engine, of which only one combustion chamber 200 and part of the combustion chamber walls delimiting the combustion chamber 200 are shown in FIG.
- the means 130 for influencing the fluid flow protrude into the combustion chamber 200 and thus provide efficient protection of the flame core occurring at the ignition point ZP from fluid flows with a turbulence level that is impermissibly high for safe ignition.
- inventive means 130 can also complete with the cylinder head or even protrude into the cylinder head.
- the installation position of the laser spark plug 100 with respect to the combustion chamber 200 is selected so that an end face 112a of the combustion chamber window 112 (Figure 1) is approximately in the same plane as a combustion chamber 200 in Figure 2 upwards delimiting combustion chamber wall.
- the focusing optics 111 are advantageously designed so that they focus the laser radiation 120 at an ignition point ZP which is approximately in one plane which is defined by the combustion chamber side end faces of the means 130 for influencing the fluid flow.
- relatively high-energy laser pulses 120 can be generated directly locally in the laser spark plug 100.
- the pumping light required for generating the laser pulses 120 can advantageously be supplied to the laser device 105 via a pumping light source which is arranged away from the laser spark plug 100 and not shown, and a corresponding optical waveguide device which optically connects the pumped light source to the laser spark plug 100.
- the configuration shown in FIGS. 1, 2 of the laser spark plug 100 according to the invention with the substantially sleeve-shaped means 130 for influencing the fluid flow represents a preferred variant of the invention, it is also possible that the means 130 according to the invention for influencing the fluid flow also have a hollow cylindrical basic shape have deviating geometry or that they are not arranged concentrically as shown to the longitudinal axis L ( Figure 1) of the laser spark plug 100th
- the substantially sleeve-shaped means 130 with notches (not shown) so that along a circumferential direction of the laser spark plug 100 preferably a plurality of openings results which exchange fluids between the region of the ignition point ZP and a radially outer side allow the housing of the laser spark plug 100 arranged region.
- FIG. 3a shows a further embodiment of the laser spark plug 100 according to the invention, in which the end face 131 of the means 130 according to the invention for influencing the fluid flow in its combustion chamber end portion 130a is chamfered at least in sections, so that a surface normal n an angle different from 0 ° with the longitudinal axis L of Laser spark plug 100 includes.
- an advantageous deflection of turbulent flows from the combustion chamber 200 advantageously results (FIG. 2), so that once again a flame kernel emerging in the region of the ignition point ZP is effectively protected from a turbulence level that is too great.
- FIG. 3b illustrates a further variant of the invention in which the means 130 according to the invention for influencing the fluid flow likewise have surface regions 131a, 131b with beveled end faces.
- the laser spark plug 100 according to FIG. 3b has differently bevelled surface areas 131a, 131b in the inventive means 130 for influencing the fluid flow, whereby advantageously also an asymmetrical flow deflection in the end region of the laser spark plug 100 can be achieved ,
- the surface normals n1, n2 of the differently beveled surface regions 131a, 131b respectively include different angles with the longitudinal axis L of the laser spark plug 100.
- FIG. 3c shows a further variant of the laser spark plug 100 according to the invention, in which different regions 131c, 131d along the location coordinate x shown by way of example in FIG. 3c vary widely in a direction in the direction of the combustion chamber, i. in Figure 3c down, extend.
- This inventive asymmetry with respect to the means 130 for influencing the fluid flow can be combined particularly advantageously with means (not shown) integrated in a piston for guiding a fluid flow in the combustion chamber 200 (FIG. 2) of the internal combustion engine.
- FIG. 4 a shows a further advantageous embodiment of the laser spark plug 100 according to the invention, in which the means 130 for influencing the fluid flow have a plurality of flow openings 135 which, in combination with corresponding flow channels 135 ', provide a fluid connection between a region of the ignition point ZP and a radially outer side of the means 130 Influencing the fluid flow arranged region 200a produce.
- the flow openings 135 according to the invention and the associated flow channels 135 'advantageously make it possible to reduce the turbulence size of fluid flows which move radially from the outside to the combustion chamber end of the laser spark plug 100.
- the turbulence level in the ignition point ZP can thus be kept below a critical limit for a reliable ignition process.
- the number, shape, orientation and size of the flow openings 135 or of the flow channels 135 ' is preferably adapted or optimized for this purpose using numerical flow simulations to the respective flow conditions of the respective internal combustion engine.
- FIG. 4b shows a further embodiment of the laser spark plug 100 according to the invention, in which a plurality of flow openings 135 or corresponding flow channels 135 'are provided in different planes E1, E2, whose surface normals are each preferably approximately parallel to the longitudinal axis L of the laser spark plug 100.
- FIGS. 4c, 4d show further advantageous embodiments of the laser spark plug 100 according to the invention, in each of which a plurality of flow openings 135 or flow channels 135 ', each in a different configuration, are provided.
- FIG. 4e shows a further embodiment of the laser spark plug 100 according to the invention, in which a first group of flow openings 135a has a circular cross-section as described in the embodiments described so far, while a second group of flow openings 135b has a rectangular cross-section.
- FIG. 4f shows a further embodiment of the laser spark plug 100 according to the invention, in which flow openings 135c, 135d are provided which both have a circular shape but have a different diameter.
- the means 130 according to the invention for influencing the fluid flow of the laser spark plug 100 depicted in FIG. 4f also have differently designed flow channels 135c ', 135d' whose diameter is adapted, for example, to the flow openings 135c, 135d.
- the flow channels 135 are arranged so that their longitudinal axis extends in each case through the ignition point ZP.
- the flow channels 135 '"each have a varying diameter along the longitudinal axis of the flow channel 135' ', resulting in a nozzle effect with respect to the fluid flow passing therethrough.
- FIGS. 5a-5f each illustrate differently shaped lateral surfaces of the substantially sleeve-shaped means 130 for influencing the fluid flow.
- FIG. 5a shows a first variant of a lateral surface for the means 130 according to the invention for influencing the fluid flow, which has a total of four flow openings 135.
- the flow openings 135 are arranged along a circumferential direction U and are therefore located substantially in the same plane with respect to the longitudinal axis L of the laser spark plug 100 (FIG. 1).
- FIG. 5b shows a further embodiment of the lateral surface of the fluid flow control means 130 according to the invention, in which a double-row configuration of flow openings 135 is provided.
- FIGS. 5c-5f Further possible combinations of flow openings in the lateral surface of the means 130 according to the invention for influencing the fluid flow can be seen in FIGS. 5c-5f.
- FIG. 5f The configuration illustrated in Figure 5f has specially shaped flow channels which are substantially truncated cone shape. According to FIG. 5f, these flow channels are arranged alternately along the circumferential direction U with their larger or smaller truncated cone diameter in the region of the plane of the drawing of FIG. 5f.
- the above-described inventive features of the means 130 for influencing the fluid flow can also be used in combinations other than those explicitly described.
- the laser spark plug 100 according to the invention enables reliable laser ignition even with relatively low pulse energies. It is also possible to use a plurality of laser pulses 120, which follow one another for a short time, for an ignition process which, due to the influencing of the fluid flow in the region of the ignition point ZP according to the invention, can advantageously all be deposited in the same flame core.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810040429 DE102008040429A1 (de) | 2008-07-15 | 2008-07-15 | Strömungsschutzvorrichtung an einer Laserzündkerze zur Verbesserung des Entflammungsverhaltens |
PCT/EP2009/059002 WO2010007066A1 (de) | 2008-07-15 | 2009-07-14 | Laserzündkerze mit vorrichtung zur beeinflussung der strömung des luft-kraftstoff-gemisches und zur verbesserung der entflammung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2304321A1 true EP2304321A1 (de) | 2011-04-06 |
Family
ID=41037676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09780577A Withdrawn EP2304321A1 (de) | 2008-07-15 | 2009-07-14 | Laserzündkerze mit vorrichtung zur beeinflussung der strömung des luft-kraftstoff-gemisches und zur verbesserung der entflammung |
Country Status (4)
Country | Link |
---|---|
US (1) | US9133813B2 (de) |
EP (1) | EP2304321A1 (de) |
DE (1) | DE102008040429A1 (de) |
WO (2) | WO2010007067A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009026794A1 (de) * | 2009-06-05 | 2010-12-09 | Robert Bosch Gmbh | Laserzündeinrichtung |
US8833323B2 (en) * | 2009-02-02 | 2014-09-16 | Robert Bosch Gmbh | Ignition laser |
AT508983B1 (de) * | 2009-10-07 | 2012-12-15 | Ge Jenbacher Gmbh & Co Ohg | Laserzündkerze für brennkraftmaschine |
DE102009047021A1 (de) * | 2009-11-23 | 2011-05-26 | Robert Bosch Gmbh | Laserzündkerze |
DE102010003899A1 (de) * | 2010-04-13 | 2011-10-13 | Robert Bosch Gmbh | Laserzündkerze mit einer Vorkammer |
DE102010027943A1 (de) * | 2010-04-20 | 2011-10-20 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Laserzündkerze für eine Brennkraftmaschine |
DE102010029385A1 (de) * | 2010-05-27 | 2011-12-01 | Robert Bosch Gmbh | Laserinduzierte Fremdzündung für eine Brennkraftmaschine |
DE102010029347A1 (de) | 2010-05-27 | 2011-12-01 | Robert Bosch Gmbh | Laserinduzierte Fremdzündung für eine Brennkraftmaschine |
DE102010029420A1 (de) * | 2010-05-27 | 2011-12-01 | Robert Bosch Gmbh | Laserinduzierte Fremdzündung für eine Brennkraftmaschine |
WO2016028760A1 (en) | 2014-08-18 | 2016-02-25 | Woodward, Inc. | Torch igniter |
CN106196169B (zh) * | 2016-09-18 | 2019-04-09 | 北京航天动力研究所 | 一种高温使用可更换点火火焰径向喷射装置 |
US11421601B2 (en) | 2019-03-28 | 2022-08-23 | Woodward, Inc. | Second stage combustion for igniter |
JP7332252B2 (ja) * | 2020-02-10 | 2023-08-23 | 東芝エネルギーシステムズ株式会社 | ガスタービン燃焼器 |
US11859817B2 (en) * | 2020-12-07 | 2024-01-02 | General Electric Company | System and method for laser ignition of fuel in a coal-fired burner |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5659982U (de) * | 1979-10-15 | 1981-05-22 | ||
DE102006015600A1 (de) * | 2006-04-04 | 2007-10-11 | Ufermann, Rüdiger | Laser-Zündkerze mit variablem oder fixem Zündpunkt |
EP2072803A2 (de) * | 2007-12-19 | 2009-06-24 | GE Jenbacher GmbH & Co OHG | Vorrichtung zur Zündung eines Brennstoff/Luftgemischs im Brennraum einer Brennkraftmaschine |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1392364A (en) * | 1921-04-02 | 1921-10-04 | Smith Frederick Arthur | Ignition device for internal-combustion engines |
DE748641C (de) * | 1936-12-03 | 1944-11-08 | Zuendkerze mit einer Brueckenelektrode | |
US3926169A (en) * | 1974-06-21 | 1975-12-16 | Fuel Injection Dev Corp | Combined fuel vapor injector and igniter system for internal combustion engines |
FR2470462A2 (fr) * | 1976-04-28 | 1981-05-29 | Duracher Rene | Allumeur pour moteur catalytique non polluant |
JPS5343143A (en) * | 1976-09-30 | 1978-04-19 | Tokai Trw & Co | Ignition plug |
DE3619938A1 (de) * | 1986-06-13 | 1987-12-17 | Bayerische Motoren Werke Ag | Zuendkerze fuer brennkraftmaschinen |
DE3913665A1 (de) * | 1989-04-26 | 1990-10-31 | Ruhrgas Ag | Vorkammer-zuendeinrichtung |
US5105780A (en) * | 1990-08-08 | 1992-04-21 | Caterpillar Inc. | Ignition assisting device for internal combustion engines |
US6304023B1 (en) * | 1999-03-02 | 2001-10-16 | Caterpillar Inc. | Spark plug for an internal combustion engine having a helically-grooved electrode |
EP1329631A3 (de) * | 2002-01-22 | 2003-10-22 | Jenbacher Zündsysteme GmbH | Verbrennungsmotor |
EP1519039A1 (de) * | 2003-09-23 | 2005-03-30 | AVL List GmbH | Gütegeschaltener, gepumpter Festkörperlaser |
FR2873763B1 (fr) | 2004-07-29 | 2009-06-12 | Peugeot Citroen Automobiles Sa | Dispositif d'allumage pour moteur a combustion interne et moteur comportant un tel dispositif |
DE102004039818A1 (de) | 2004-08-17 | 2006-03-09 | Kuhnert-Latsch-GbR (vertretungsberechtigter Gesellschafter Dr. Reinhard Latsch, 76530 Baden-Baden) | Verfahren und Vorrichtung zur Entflammung von Kraftstoff-Luft-Gemischen bei einem Verbrennungsmotor mit Vorkammerzündung |
US7040280B1 (en) * | 2005-02-08 | 2006-05-09 | General Motors Corporation | Spark ignition enhancer and spark plug therewith |
US7995631B2 (en) * | 2006-04-14 | 2011-08-09 | Raytheon Company | Solid-state laser with spatially-tailored active ion concentration using valence conversion with surface masking and method |
DE102006018973A1 (de) * | 2006-04-25 | 2007-10-31 | Kuhnert-Latsch-GbR (vertretungsberechtigter Gesellschafter Herr Dr.-Ing. Reinhard Latsch, 76530 Baden-Baden) | Laserzündung in einer Vorkammer |
DE102007041528A1 (de) * | 2007-08-31 | 2009-03-05 | Robert Bosch Gmbh | Zündeinrichtung für eine Laserzündung einer Brennkraftmaschine |
PL384721A1 (pl) * | 2008-03-17 | 2009-09-28 | Wiesław Olędzki | Urządzenie zapłonu laserowego do silnika spalinowego w szczegółności silnika czterosuwowego, zasilanego alkoholem etylowym, metylowym oraz benzyną, naftą i benzelem(benzenem) |
-
2008
- 2008-07-15 DE DE200810040429 patent/DE102008040429A1/de not_active Ceased
-
2009
- 2009-07-14 EP EP09780577A patent/EP2304321A1/de not_active Withdrawn
- 2009-07-14 WO PCT/EP2009/059004 patent/WO2010007067A1/de active Application Filing
- 2009-07-14 WO PCT/EP2009/059002 patent/WO2010007066A1/de active Application Filing
- 2009-07-14 US US13/054,417 patent/US9133813B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5659982U (de) * | 1979-10-15 | 1981-05-22 | ||
DE102006015600A1 (de) * | 2006-04-04 | 2007-10-11 | Ufermann, Rüdiger | Laser-Zündkerze mit variablem oder fixem Zündpunkt |
EP2072803A2 (de) * | 2007-12-19 | 2009-06-24 | GE Jenbacher GmbH & Co OHG | Vorrichtung zur Zündung eines Brennstoff/Luftgemischs im Brennraum einer Brennkraftmaschine |
Non-Patent Citations (1)
Title |
---|
See also references of WO2010007066A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2010007066A1 (de) | 2010-01-21 |
US20110185996A1 (en) | 2011-08-04 |
DE102008040429A1 (de) | 2010-01-28 |
US9133813B2 (en) | 2015-09-15 |
WO2010007067A1 (de) | 2010-01-21 |
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