EP2748904A1 - Zündkerze für eine brennkraftmaschine - Google Patents
Zündkerze für eine brennkraftmaschineInfo
- Publication number
- EP2748904A1 EP2748904A1 EP12769580.7A EP12769580A EP2748904A1 EP 2748904 A1 EP2748904 A1 EP 2748904A1 EP 12769580 A EP12769580 A EP 12769580A EP 2748904 A1 EP2748904 A1 EP 2748904A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ground electrode
- spark plug
- electrode
- center
- ground
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 17
- 239000000969 carrier Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 1
- 229910033181 TiB2 Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
- H01T13/32—Sparking plugs characterised by features of the electrodes or insulation characterised by features of the earthed electrode
-
- 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
-
- 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
-
- 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
- H01T13/46—Sparking plugs having two or more spark gaps
- H01T13/467—Sparking plugs having two or more spark gaps in parallel connection
Definitions
- the invention relates to a spark plug for an internal combustion engine, in particular a gas engine, comprising a center electrode and at least one ground electrode group, each comprising one or more ground electrode plates, the center electrode having at least one center electrode plate with a center electrode surface, wherein the center electrode surface is in a range of 0 ° to 50 ° preferably up to a maximum of 45 ° - inclined to a cross-sectional plane transverse to the longitudinal axis of the spark plug, each ground electrode pad of a ground electrode group facing the center electrode surface spaced from the central electrode surface and extending substantially parallel to the central electrode surface ground electrode surface, wherein a projection of all ground electrode surfaces of the ground electrode plate of a ground electrode group to their assigned center electrode area in the direction of a normal vector of the center electrode area in summ e gives an imaginary electrode surface, wherein the imaginary electrode surface has a size of 8 mm 2 to 25 mm 2 .
- US Pat. No. 5,493,171 shows a spark plug with enlarged and in the Substantially radial electrode surfaces, wherein the electrodes to extend the spark plug life consist at least partially of titanium diboride.
- US 5,767,613 shows a spark plug with increased radial electrode surfaces, through which a more efficient and complete combustion of a fuel-air mixture is to be made possible.
- spark plugs whose electrode surfaces are inclined with respect to the longitudinal axis of the spark plug (eg US 2,180,528 and DE 24 46 929 A1).
- the principal object of a spark plug is to ignite a fuel-air mixture supplied to the electrodes.
- the ignition system sufficient energy must be made available to allow sparking between the electrodes.
- the flame kernel must have enough energy so that it does not cool down enough at the electrodes to extinguish it. Therefore, the flammability conditions are much more difficult with large electrode areas than with smaller electrode areas.
- the object of the invention is to provide a comparison with the prior art improved spark plug of the aforementioned type.
- This object is achieved according to the invention in that each ground electrode area of the ground electrode plates of a ground electrode group is arranged in a range of 0.2 mm to 0.8 mm away from the at least one center electrode area.
- the maximum high-voltage strength of a conventional spark plug body is about 40 kV to 45 kV.
- each ground electrode area of the ground electrode platelets of a ground electrode group is arranged at a distance of less than or equal to 0.4 mm from the at least one center electrode area.
- the arrangement of a central electrode surface and the ground electrode surfaces of the ground electrode plates of a ground electrode group assigned to this center electrode surface and extending essentially parallel to the center electrode surface at an angle of maximally 50 ° to a cross sectional plane transverse to the longitudinal axis of the spark plug can also be replaced by short structural lengths of a ground electrode carrier on which the respective ground electrode plates are arranged, and associated short paths from a ground electrode plate to the spark plug body good cooling of the electrodes can be achieved. This is particularly important in applications in internal combustion engines with prechamber.
- a ground electrode group may comprise exactly one ground electrode plate. However, it can also be provided that a ground electrode group comprises more than one, preferably two, ground electrode platelets.
- the center electrode has a plurality of center electrode plates each having a central electrode surface and the spark plug comprises a plurality of ground electrode groups, wherein each of the ground electrode pads of the ground electrode plates of a ground electrode group of the plurality of ground electrode groups spaced and substantially parallel to a central electrode surface of the plurality of central electrode surfaces are arranged.
- the center electrode has a first center electrode plate with a first center electrode surface and a second center electrode plate with a second center electrode surface and the spark plug comprises a first ground electrode group and a second ground electrode group, wherein the ground electrode surfaces of the ground electrode platelets of the first ground electrode group spaced and substantially parallel are arranged to the first center electrode surface and wherein the ground electrode surfaces of the Ground electrode pad of the second ground electrode group spaced and arranged substantially parallel to the second center electrode surface.
- the spark plug has an external thread with a diameter of substantially 18 mm.
- the external thread may be e.g. to act a metric iso thread M18.
- Such a spark plug size is typical for stationary gas engines.
- Protection is also desired for an internal combustion engine, in particular a stationary gas engine, with at least one prechamber and at least one main combustion chamber and with at least one spark plug according to one of claims 1 to 7, wherein the at least one spark plug is arranged in the at least one prechamber.
- 1a is a perspective view of an embodiment of the proposed spark plug
- FIG. 1b is a plan view of the spark plug of Fig. 1a
- FIG. 1c is a sectional view along section line AA of Fig. 1b,
- FIG. 1 d shows a representation of the electrode surface of the spark plug according to FIG.
- FIGS. 2a and 2b show perspective views of a further embodiment of the proposed spark plug
- FIG. 2c is a plan view of the spark plug of Fig. 2a
- FIG. 2d is a sectional view along section line AA of Fig. 2c
- FIG. 2e shows a representation of an electrode surface of the spark plug according to FIG. 2a, FIG.
- 3a and 3b are perspective views of another embodiment of the proposed spark plug
- FIG. 3c is a plan view of the spark plug of Fig. 3a
- FIG. 3d shows a sectional view along the section line AA of FIG. 3c, FIG.
- 3e is an illustration of an electrode surface of the spark plug according to FIG.
- FIG. 4c is a plan view of the spark plug of Fig. 4a
- FIG. 4d is a sectional view along section line AA of Fig. 4c
- FIG. 4e shows a side view of an end region of the spark plug according to FIG.
- 4g is a perspective view of a center electrode plate of
- 5a and 5b show a further embodiment of the proposed spark plug in perspective views
- FIG. 5c is a plan view of the spark plug of Fig. 5a
- FIG. 5d is a sectional view along section line AA of Fig. 5c
- 5e is an illustration of an electrode surface of the spark plug according to FIG.
- FIG. 6a shows a further embodiment of the proposed spark plug in a perspective view
- FIG. 6b is a side view of the spark plug of Fig. 6a
- FIG. 6c is a plan view of the spark plug of Fig. 6a
- FIG. 6d is a sectional view along section line AA of Fig. 6c
- FIG. 6e shows an illustration of an electrode surface of the spark plug according to FIG.
- FIG. 7b is a side view of the spark plug of Fig. 7a
- FIG. 7c is a plan view of the spark plug of Fig. 7a
- Fig. 7d is a sectional view along section line AA of Fig. 7c and
- FIG. 7e shows an illustration of an electrode surface of the spark plug according to FIG.
- Fig. 1a shows an embodiment of a proposed spark plug 1 in a perspective view.
- the spark plug 1 has a cylindrical center electrode 2, wherein the end portion of the center electrode 2 has an inclined end surface 9.
- a center electrode plate 2 ' is arranged on this oblique end face 9, a center electrode plate 2 'is arranged.
- This center electrode pad 2 ' may typically be made of a noble metal or a noble metal alloy and may be connected to the center electrode 2 in a known manner, for example by resistance welding.
- the spark plug 1 also has a typically metallic end portion 7, which typically has an external thread, whereby the spark plug 1 can be screwed into the cylinder head of an internal combustion engine.
- This external thread arranged on the metallic end region 7 may, for example, be a metric iso thread M18 having a diameter of substantially 18 mm.
- Such spark plug size is a typical size for stationary gas engines.
- a ground electrode carrier 8 is arranged, on which a ground electrode group 3a comprising a ground electrode plate 3 'is arranged.
- the center electrode plate 2 'and the ground electrode plate 3' of the ground electrode group 3a are arranged facing each other.
- the center electrode chip 2 ' has a center electrode surface 4a in the direction of the ground electrode chip 3'
- the ground electrode chip 3 ' has a ground electrode surface 5 in the direction of the center electrode chip 2'.
- Center electrode surface 4a and ground electrode surface 5 are spaced from each other and are substantially parallel to each other.
- the ground electrode area 5 of the ground electrode plate 3 'of the ground electrode group 3a is spaced 0.35 mm from the center electrode area 4a in this example (see Fig. 1c).
- the projection of the ground electrode area 5 of the ground electrode plate 3 'in the direction of a normal vector N of the center electrode area 4a results in an imaginary electrode area A having a size of 8.25 mm 2 (see FIG. 1 d).
- Fig. 1b shows a plan view of the spark plug 1 of Fig. 1a.
- the spark plug 1 has a ground electrode group 3a in the form of a single ground electrode carrier 8, on which a single earth electrode plate 3 '(in this illustration by the Ground electrode carrier 8 hidden) is arranged.
- the center electrode 2 on whose end-side surface 9 a center electrode plate 2 'is arranged.
- FIG. 1c shows a longitudinal section through an end region of the spark plug 1 according to section line AA of FIG. 1b.
- the center electrode 2 is surrounded by a usually ceramic insulator 6.
- the center electrode 2 has an oblique end surface 9, which is inclined at an angle of 45 ° to a cross-sectional plane transverse to the longitudinal axis L of the spark plug 1.
- a center electrode plate 2 ' is attached on this oblique end face 9, a center electrode plate 2 'is attached.
- the center electrode plate 2 ' has a central electrode surface 4a, which is also inclined at an angle of 45 ° to a cross-sectional plane transverse to the longitudinal axis L of the spark plug 1, corresponding to the oblique end surface 9.
- a ground electrode group 3a in the form of a ground electrode carrier 8 to which a ground electrode plate 3 'is attached is disposed.
- ground electrode platelets 3 'and center electrode platelets 2' are arranged substantially congruent to one another and have equal sized electrode surfaces (ground electrode surface 5 and center electrode surface 4a). Center electrode surface 4a and ground electrode surface 5 are spaced apart by 0.35 mm and are substantially parallel to each other.
- the projection of the ground electrode surface 5 of the ground electrode plate 3 'onto the center electrode surface 4a in the direction of a normal vector N of the center electrode surface 4a results in an imaginary electrode surface A according to FIG. 1d. According to the dimensions given in millimeters (mm), an imaginary electrode area A of 8.25 mm 2 results.
- Fig. 2a shows a perspective view of another embodiment of the proposed spark plug 1
- Fig. 2b shows another perspective view, wherein for reasons of clarity, the ground electrode groups 3a and 3b and two center electrode plates 2 'have been removed from the illustration.
- the Center electrode 2 of this spark plug 1 has a substantially tetrahedral end region with three end faces 9 arranged in a tetrahedral fashion relative to one another. Each of the three end faces 9 is inclined by 45 ° to a cross-sectional plane transverse to the longitudinal axis L of the spark plug 1, and at each of the end faces 9, a center electrode chip 2 'is disposed.
- Each ground electrode group 3a, 3b, 3c is formed in each case by a ground electrode carrier 8, on each of which a ground electrode tab 3 'is arranged.
- Fig. 2c shows a plan view of the spark plug 1 of Fig. 2a and Fig. 2d shows a longitudinal section through an end portion of the spark plug 1 according to section line AA of Fig. 2c.
- the respective center electrode platelet 2 'and the ground electrode pad 3' of a respective ground electrode group 3a, 3b, 3c are arranged relative to one another such that in a viewing direction in accordance with a normal vector N of the respective center electrode area 4a, 4b, 4c, the respective center electrode area 4a, 4b, 4c and the ground electrode surface 5 of the ground electrode plate 3 'of their respective associated ground electrode group 3a, 3b, 3c are substantially congruent and have the same contour.
- the ground electrode area 5 of the ground electrode chip 3 'of the ground electrode group 3a in a viewing direction according to a normal vector N of the center electrode area 4a is substantially congruent with the center electrode area 4a, thus has substantially the same contour and also the same area amount.
- the center electrode surface 4a of the center electrode chip 2 'and the ground electrode surface 5 of the ground electrode chip 3' of the ground electrode group 3a are facing each other and spaced apart by 0.35 mm and are substantially parallel to each other.
- FIG. 2e shows a representation of the imaginary electrode area A resulting, for example, by projecting the ground electrode area 5 of the ground electrode plate 3 'of the ground electrode group 3a onto the center electrode area 4a in the direction of a normal vector N of the center electrode area 4a. Due to the dimensions given in millimeters, an imaginary electrode area A of 11, 13 mm 2 results for all three projections of respective ground electrode area 5 to respective center electrode area 4 a, 4 b, 4 c .
- FIG. 3a shows a perspective view of a further embodiment of the proposed spark plug 1
- Fig. 3b shows another perspective view, for reasons of clarity, the ground electrode groups 3a, 3b, 3c and three center electrode plate 2 'have been removed from the illustration.
- 3c shows a plan view of the spark plug 1 of FIG. 3a
- FIG. 3d shows a longitudinal section through an end region of the spark plug 1 according to section line AA of FIG. 3c.
- the center electrode 2 of this spark plug 1 has a substantially pyramidal end region with four end surfaces 9 arranged in pyramidal relationship to one another. Each of the four end faces 9 is inclined at 45 ° to a cross-sectional plane transverse to the longitudinal axis L of the spark plug 1, and at each of the end faces 9, a center electrode pad 2 'is disposed.
- Each ground electrode group 3a, 3b, 3c, 3d is formed by a respective ground electrode carrier 8, on each of which a ground electrode plate 3 'is arranged.
- Two mutually associated center electrode platelets 2 'and ground electrode platelets 3' accordingly each have one of the central electrode surfaces 4a, 4b, 4c, 4d and in each case a ground electrode surface 5.
- the respective ground electrode surface 5 is arranged substantially parallel to its associated central electrode surface 4a, 4b, 4c, 4d and spaced from it by 0.35 mm each.
- FIG. 4a shows a perspective view of another embodiment of the proposed spark plug 1
- Fig. 4b shows another perspective view, wherein for reasons of clarity, the ground electrode groups 3a, 3b, 3c and three center electrode plate 2 'have been removed from the illustration.
- 4c shows a plan view of the spark plug of FIG. 4a and FIG.
- FIG. 4d shows a longitudinal section through an end region of the spark plug 1 according to section line AA of FIG. 4c.
- 4e shows a side view of an end region of the spark plug 1 according to FIG. 4a, and
- FIG. 4f shows a cross section through the end region of the spark plug 1 along the section line BB of FIG. 4e.
- FIG. 4g shows a perspective view of a center electrode plate 2 'of the spark plug 1 according to FIG. 4a.
- the center electrode 2 of this spark plug 1 has a substantially frusto-conical end region with a peripheral circumferential surface which forms an end face 9 of the center electrode 2.
- the angle between a surface line of the end surface 9 and a cross-sectional plane transverse to the longitudinal axis L of the spark plug 1 is 45 ° (see Fig. 4d).
- Each of the four ground electrode groups 3 a, 3 b, 3 c, 3 d of this spark plug is assigned a respective center electrode pad 2 ', which is formed on the end face 9 and formed in accordance with the frusto-conical configuration of the end face 9.
- Each ground electrode group 3a, 3b, 3c, 3d is formed by a respective ground electrode carrier 8, on each of which a ground electrode plate 3 'is arranged.
- the ground electrode plates 3 ' are shaped according to the frusto-conical configuration of the end face 9, so that in each case a ground electrode surface 5 of the ground electrode plate 3' of a ground electrode group 3a, 3b, 3c, 3d and their associated center electrode surface 4a, 4b, 4c, 4d spaced and substantially parallel to each other, wherein the electrode surfaces in this case are non-planar surfaces.
- the respective mutually facing and curved surfaces of mutually associated center electrode platelets 2 'and ground electrode platelets 3' are spaced apart by 0.35 mm.
- Each of the four imaginary electrode surfaces A is essentially a sector cutout of a the center electrode surfaces 4a, 4b, 4c, 4d comprehensive lateral surface of a truncated cone and has a size of 8 mm 2 to 25 mm 2 .
- Fig. 5a and Fig. 5b show two perspective views of another embodiment of the proposed spark plug 1.
- Fig. 5c shows a plan view of the spark plug 1 of Fig. 5a and Fig. 5d shows a longitudinal section through an end portion of the spark plug 1 according to section line AA Fig. 5c.
- Fig. 5e shows a representation of the imaginary electrode area A, which results by projecting the ground electrode area 5 of the ground electrode plate 3 'of the ground electrode group 3a onto the center electrode area 4a in the direction of a normal vector N of the center electrode area 4a.
- the metallic end portion 7 of this spark plug 1 has an external thread in the form of a metric iso thread M18 having a diameter of substantially 18 mm.
- a ground electrode carrier 8 is arranged, on which a ground electrode group 3a comprising a ground electrode plate 3 'is arranged.
- the cylindrical center electrode 2 has an end face 9, which is arranged substantially transversely to the longitudinal axis L of the spark plug 1.
- a center electrode plate 2 ' is arranged, wherein the center electrode plate 2' has a substantially circular center electrode surface 4a, which is arranged substantially transversely to the longitudinal axis L of the spark plug 1.
- the angle between the central electrode surface 4a and a cross-sectional plane transverse to the longitudinal axis L of the spark plug 1 is substantially 0 °.
- the center electrode chip 2 'and the ground electrode chip 3' of the ground electrode group 3a are arranged facing each other.
- the center electrode chip 2 ' has the center electrode surface 4a in the direction of the ground electrode chip 3'
- the ground electrode chip 3 ' has a ground electrode surface 5 in the direction of the center electrode chip 2'.
- Center electrode surface 4a and ground electrode surface 5 are spaced from each other and are substantially parallel to each other.
- the ground electrode surface 5 of the ground electrode plate 3 'of the ground Group of electrodes 3a in this example is spaced 0.35 mm from the central electrode surface 4a (see Fig. 5d).
- the ground electrode surface 5 is substantially circular and has a diameter of 4.8 mm.
- the center electrode surface 4a is also substantially circular and is slightly smaller than the ground electrode area 5 with a diameter of 4.5 mm.
- the projection of the ground electrode area 5 of the ground electrode plate 3 'on the center electrode area 4a in the direction of a normal vector N of the center electrode area 4a thus gives an imaginary one substantially circular electrode surface A with a diameter of 4.5 mm (see Fig. 5d and Fig. 5e). This results in a size of the imaginary electrode area A of 15.9 mm 2 .
- Fig. 6a shows a perspective view of another embodiment of the proposed spark plug 1 and Fig. 6b shows a side view of this spark plug 1.
- Fig. 5c shows a plan view of the spark plug 1 of Fig. 6a and Fig. 6d shows a longitudinal section through an end portion of Spark plug 1 according to section line AA of Fig. 6c.
- This spark plug 1 has two ground electrode carrier 8 arranged essentially inside the metallic end region 7 of the spark plug 1 and substantially flush with the end face of the metallic end region 7. At each ground electrode carrier 8 is in each case a ground electrode plate 3 'is arranged.
- Each of the two ground electrode supports 8 is substantially U-shaped in a plan view (see FIG. 6c).
- This substantially U-shaped design of the ground electrode carrier 8 in conjunction with relatively large cross sections of the ground electrode carrier 8 allows good heat dissipation of that heat which acts on the ground electrode carrier 8 in the direction of the spark plug main body or of the metallic end region 7 of the spark plug 1.
- a center electrode carrier 10 is arranged, which in this case has an end face 9 of the center electrode 2. This end face 9 is substantially transverse to the longitudinal axis L of the Spark plug arranged.
- a center electrode plate 2 ' is arranged, whose center electrode surface 4a is also arranged substantially transversely to the longitudinal axis L of the spark plug 1.
- the total of two ground electrode plates 3 'on the two ground electrode carriers 8 are arranged facing the one center electrode plate 2', whereby a single ground electrode group 3a is formed.
- Each ground electrode plate 3 ' has a ground electrode surface 5.
- the two ground electrode surfaces 5 are arranged facing the center electrode surface 4a in the direction of the longitudinal axis L of the spark plug 1.
- the ground electrode surfaces 5 of the two ground electrode plates 3 'of the ground electrode group 3a are substantially parallel to the center electrode surface 4a and spaced therefrom by 0.35 mm.
- openings 11 are provided on the lateral surface of the metallic end portion.
- An imaginary electrode area A is always determined per ground electrode group. It results in each case from the areal sum of the projections of all the ground electrode areas of the ground electrode platelets of the relevant ground electrode group to their associated center electrode area in the direction of a normal vector of the center electrode area.
- Fig. 6e shows the representation of the resulting imaginary electrode area A of the ground electrode group 3a of this spark plug 1.
- the projection of the two Ground electrode areas 5 of the ground electrode plates 3 'of the ground electrode group 3a on the center electrode area 4a in the direction of a normal vector N of the center electrode area 4a provide the two projection areas A' and A ". and A "has a size of 11 mm 2 .
- Fig. 7a shows a perspective view of another embodiment of the proposed spark plug 1 and Fig. 7b shows a side view of this spark plug 1.
- Fig. 7c shows a plan view of the spark plug 1 of Fig. 7a and Fig. 7d shows a longitudinal section through an end portion of Spark plug 1 according to section line AA of Fig. 7c.
- the spark plug 1 of this example has two ground electrode carriers 8 arranged substantially inside the metallic end region 7 of the spark plug 1 and substantially flush with the end side of the metallic end region 7.
- a ground electrode plate 3 ' is again arranged in each case.
- Each of the two ground electrode supports 8 has a top view in the direction of a spark plug center extending web 12 in a plan view (see Fig. 6c). At their ends facing the two webs 12 are arranged in this example 0.5 mm apart.
- the two ground electrode carriers 8 in the form of the two webs 12 are in this example made in one piece with the metallic end region 7 (see FIG. 7d).
- the two ground electrode plates 3 'arranged on the two ground electrode carriers 8 constitute, as in the case of the spark plug 1 according to FIGS. 6a to 6e, the only ground electrode group 3a of this spark plug 1, since both earth electrode plates 3' are arranged facing the same center electrode plate 2 'and facing the same.
- the formation of the center electrode 2 with center electrode support 10 and center electrode pad 2 'arranged thereon and the arrangement and alignment of the ground electrode areas 5 of the ground electrode platelets 3' of the ground electrode group 3a with respect to their associated center electrode area 4a of the single center electrode chip 2 ' essentially corresponds to the spark plug 1 according to FIG 6a to 6e.
- Corresponding openings 11 for checking and adjusting the electrode spacings on the lateral surface or openings 11 'for improved fuel / air mixture accessibility at the end face of the metallic end region 7 of the spark plug 1 are similar to the spark plug 1 according to FIG 6a to 6e.
- the two projection surfaces A 'and A formed by the two projections of the ground electrode surfaces 5 of the two ground electrode plates 3' of the ground electrode group 3a on the center electrode surface 4a in the direction of a normal vector N of the center electrode surface 4a, as in the spark plug 1 shown in FIG. 6a to FIG 6e sum the imaginary electrode area A of the ground electrode group 3a with a total size of 22 mm 2 (see Fig. 7e).
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Spark Plugs (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ATA1202/2011A AT511866B1 (de) | 2011-08-22 | 2011-08-22 | Zündkerze für eine brennkraftmaschine |
| PCT/AT2012/000214 WO2013026075A1 (de) | 2011-08-22 | 2012-08-17 | Zündkerze für eine brennkraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2748904A1 true EP2748904A1 (de) | 2014-07-02 |
| EP2748904B1 EP2748904B1 (de) | 2014-10-08 |
Family
ID=47002450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12769580.7A Not-in-force EP2748904B1 (de) | 2011-08-22 | 2012-08-17 | Zündkerze für eine brennkraftmaschine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20140196684A1 (de) |
| EP (1) | EP2748904B1 (de) |
| JP (1) | JP2014529850A (de) |
| CN (1) | CN103748750A (de) |
| AT (1) | AT511866B1 (de) |
| WO (1) | WO2013026075A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3173596B1 (de) * | 2015-11-25 | 2020-04-01 | Caterpillar Energy Solutions GmbH | Vorverbrennungskammeranordnung für verbrennungsmotoren |
| DE102017102128B4 (de) | 2016-02-18 | 2019-01-24 | Federal-Mogul Ignition Gmbh | Zündkerze für eine gasbetriebene Brennkraftmaschine |
| JP6780381B2 (ja) | 2016-08-31 | 2020-11-04 | 株式会社デンソー | スパークプラグ及びその製造方法 |
| DE102017107728A1 (de) * | 2017-04-10 | 2018-10-11 | Federal-Mogul Ignition Gmbh | Vorkammerzündkerze und Verfahren zu deren Herstellung |
| DE102020211356A1 (de) * | 2020-09-10 | 2022-03-10 | Robert Bosch Gesellschaft mit beschränkter Haftung | Kostengünstige Vorkammerzündkerze |
| JP7643293B2 (ja) * | 2020-10-23 | 2025-03-11 | 株式会社デンソー | 内燃機関用のスパークプラグ及びこれを備えた内燃機関 |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2180528A (en) * | 1933-09-09 | 1939-11-21 | Armen A Kasarjian | Spark plug |
| US3958144A (en) * | 1973-10-01 | 1976-05-18 | Franks Harry E | Spark plug |
| IT1022391B (it) * | 1973-10-01 | 1978-03-20 | Franks Harry E | Candela di accensione per motori |
| JPS6214632Y2 (de) * | 1978-04-12 | 1987-04-14 | ||
| JPS5956380A (ja) * | 1982-09-22 | 1984-03-31 | 株式会社デンソー | 内燃機関用スパ−クプラグ |
| GB2184484A (en) * | 1985-12-21 | 1987-06-24 | Dawson Royalties Ltd | Spark plugs |
| GB2276207B (en) * | 1993-03-18 | 1996-09-04 | Nippon Denso Co | A spark plug and a method of producing the same |
| US5456624A (en) * | 1994-03-17 | 1995-10-10 | Alliedsignal Inc. | Spark plug with fine wire rivet firing tips and method for its manufacture |
| US5493171A (en) * | 1994-10-05 | 1996-02-20 | Southwest Research Institute | Spark plug having titanium diboride electrodes |
| US5767613A (en) | 1996-06-17 | 1998-06-16 | Bisnes Mauleg, Inc. | Spark plug with enlarged center electrode and gap |
| US6060822A (en) * | 1997-07-21 | 2000-05-09 | Century Development International Ltd. | Spark plug |
| JP4433634B2 (ja) * | 2000-06-29 | 2010-03-17 | 株式会社デンソー | コージェネレーション用スパークプラグ |
| JP4306115B2 (ja) * | 2000-11-06 | 2009-07-29 | 株式会社デンソー | スパークプラグの製造方法 |
| JP4305713B2 (ja) * | 2000-12-04 | 2009-07-29 | 株式会社デンソー | スパークプラグ |
| JP4485084B2 (ja) * | 2001-02-27 | 2010-06-16 | 日本特殊陶業株式会社 | スパークプラグ |
| AT410151B (de) * | 2001-06-05 | 2003-02-25 | Jenbacher Ag | Zündkerze einer brennkraftmaschine |
| JP4696220B2 (ja) * | 2005-07-15 | 2011-06-08 | 三菱自動車工業株式会社 | 点火プラグ |
| WO2007121757A1 (en) * | 2006-04-20 | 2007-11-01 | Hosny Ibrahim Sabry | Spark plug |
| AT506140B1 (de) * | 2007-11-05 | 2009-11-15 | Francesconi Christian | Zündkerze |
| DE102009016461A1 (de) * | 2009-04-04 | 2010-10-07 | Man Diesel Se | Zündanordnung für einen Gasmotor, mit dieser ausgerüsteter Gasmotor und Verfahren zum Betreiben des Gasmotors |
-
2011
- 2011-08-22 AT ATA1202/2011A patent/AT511866B1/de not_active IP Right Cessation
-
2012
- 2012-08-17 CN CN201280040708.9A patent/CN103748750A/zh active Pending
- 2012-08-17 WO PCT/AT2012/000214 patent/WO2013026075A1/de not_active Ceased
- 2012-08-17 EP EP12769580.7A patent/EP2748904B1/de not_active Not-in-force
- 2012-08-17 JP JP2014526336A patent/JP2014529850A/ja not_active Ceased
-
2014
- 2014-02-18 US US14/182,749 patent/US20140196684A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2013026075A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013026075A1 (de) | 2013-02-28 |
| EP2748904B1 (de) | 2014-10-08 |
| JP2014529850A (ja) | 2014-11-13 |
| AT511866A1 (de) | 2013-03-15 |
| AT511866B1 (de) | 2014-01-15 |
| CN103748750A (zh) | 2014-04-23 |
| US20140196684A1 (en) | 2014-07-17 |
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