EP2443711A1 - Spark plug - Google Patents
Spark plugInfo
- Publication number
- EP2443711A1 EP2443711A1 EP10854248A EP10854248A EP2443711A1 EP 2443711 A1 EP2443711 A1 EP 2443711A1 EP 10854248 A EP10854248 A EP 10854248A EP 10854248 A EP10854248 A EP 10854248A EP 2443711 A1 EP2443711 A1 EP 2443711A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spark plug
- distal
- peripheral electrodes
- lower portion
- section
- 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
- 230000002093 peripheral effect Effects 0.000 claims abstract description 59
- 238000002485 combustion reaction Methods 0.000 description 15
- 150000002500 ions Chemical class 0.000 description 14
- 239000000446 fuel Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 239000012212 insulator Substances 0.000 description 3
- 235000003332 Ilex aquifolium Nutrition 0.000 description 2
- 235000002296 Ilex sandwicensis Nutrition 0.000 description 2
- 235000002294 Ilex volkensiana Nutrition 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004637 bakelite Substances 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization 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
-
- 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
-
- 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
- H01T13/52—Sparking plugs characterised by a discharge along a surface
Definitions
- the invention relates generally to spark plugs for internal combustion engines.
- spark plugs for internal combustion engines have been known for more than 100 years. Although the design of spark plugs has improved considerably during that time, there is a continuing need for spark plugs which will further enhance engine performance and, hopefully, reduce the rate of fuel consumption.
- the invention satisfies this need.
- the invention is a spark plug comprising (a) a central electrode having a proximal portion and a distal portion, the distal portion having a circular cross section with a longitudinal axis and terminating in a distal end; and (b) a plurality of peripheral electrodes, each peripheral electrode having a lower portion and an upper portion and being substantially identical in shape and dimensions, each upper portion having a distal- most point, each distal-most point being disposed in a central plane within which the longitudinal axis of the distal portion of the central electrode is wholly disposed, the cross- section of each upper portion taken along its central plane defining a convex outer side and a non-convex inner side, each convex outer side having a curved surface which is tangent to a plurality of tangent planes, all of which tangent planes intersect the longitudinal axis of the distal portion of the central electrode at points at or above the distal end of the distal point of the central
- Figure 1 is a perspective view of a spark plug having features of the invention
- Figure 2 is a plan view of one end of the spark plug illustrated in Figure 1 ;
- Figure 3A is a cross-sectional view of the spark plug illustrated in Figure 2, taken along line 3-3;
- Figure 3B is an alternative cross-sectional view of the spark plug illustrated in Figure 2, take along line 3-3;
- Figure 4A is diagrammatic illustration of a first lower portion of a peripheral electrode useable in the invention;
- Figure 4B is a diagrammatic illustration of a second lower portion of a peripheral electrode useable in the invention.
- Figure 4C is a diagrammatic illustration of a third lower portion of a peripheral electrode useable in the invention.
- Figure 4D is a diagrammatic illustration of a fourth lower portion of a peripheral electrode useable in the invention.
- Figure 4E is a diagrammatic illustration of a fifth lower portion of a peripheral electrode useable in the invention
- Figure 4F is a diagrammatic illustration of a sixth lower portion of a peripheral electrode useable in the invention
- Figure 4G is a diagrammatic illustration of a seventh lower portion of a peripheral electrode useable in the invention.
- Figure 4H is a diagrammatic illustration of an eighth lower portion of a peripheral electrode useable in the invention.
- Figure 41 is a side view of the lower portion of the peripheral electrode illustrated in Figure 4H;
- Figure 4J is a diagrammatic illustration of an ninth lower portion of a peripheral electrode useable in the invention
- Figure 4K is a side view of the lower portion of the peripheral electrode illustrated in Figure 4J
- Figure 4L is a diagrammatic illustration of a tenth lower portion of a peripheral electrode useable in the invention
- Figure 4M is a side view of the lower portion of the peripheral electrode illustrated in Figure 4L;
- Figure 4N is an alternative side view of the lower portion of the peripheral electrode illustrated in Figure 4L.
- the invention is a spark plug 10 for an internal combustion engine which is capable of providing extraordinary performance.
- the spark plug 10 comprises a central electrode 12 and a plurality of peripheral electrodes 14.
- the invention is illustrated in Figures 1-3.
- the central electrode 12 has a proximal portion 16 and a distal portion 18.
- the distal portion 18 has a circular cross-section with a longitudinal axis 20.
- the distal portion 18 terminates at a distal end 22.
- the distal end 22 of the central electrode 12 is dome-shaped for a congruous blunt shape.
- the central electrode 12 is cylindrical as with a typical spark plug.
- the diameter of the distal portion 18 is between about 0.125 inches and about 0.265 inches. This diameter of the distal portion 18 is about two to three times larger than in a typical spark plug.
- the central electrode 12 is enlarged for several reasons. One purpose is for spark stabilization. The enlarged electrode stores up more energy, thereby releasing a greater amount of electricity at the spark event. A second purpose is to cause continuous rapid ion movement during the ignition cycle that will not break down, even under extreme combustion pressure, as with racing engines.
- the plurality of peripheral electrodes 14 are disposed equidistant from one another around the central electrode 12 so as to define a circle having the central electrode 12 disposed at its center.
- the peripheral electrodes 14 are typically integral with a threaded base cylinder 24.
- the plurality of peripheral electrodes 14 constitutes 8 peripheral electrodes 14. In all cases, it is important that the number of peripheral electrodes 14 is between about 3 and about 12. When the number of peripheral electrodes 14 is less than 3 or greater than 12, performance in an internal combustion engine is markedly reduced.
- Each of the peripheral electrodes 14 is substantially identical in shape and dimensions.
- Each peripheral electrode 14 has a lower portion 25 and an upper portion 26.
- the upper portion 26 has a distal-most point 28.
- the distal-most point 28 of each of the peripheral electrodes 14 can be relatively sharp. However, in other embodiments, the distal-most point 28 of each of the peripheral electrodes 14 may be more rounded or flat.
- each distal-most point 28 is disposed in a central plane 30 within which the longitudinal axis 20 of the distal portion 18 of the central electrode 12 is wholly disposed.
- the cross-section of each upper portion 26 of each of the peripheral electrodes 14, taken along its central plane 30, defines a convex outer side 32 and a non-convex inner side 34.
- each convex outer side 32 has a curved surface 36 which is tangent to a plurality of tangent planes 38, all of which tangent planes 38 intersect the longitudinal axis 20 of the distal portion 18 of the central electrode 12 at points at or above the distal end 22 of the distal point of the central electrode 12.
- the curved surface 36 of the convex outer side 32 is smooth with preferably no discontinuities.
- Figure 3B illustrates an alternative cross-sectional view identical to that which is illustrated in Figure 3A, except that the inner side 34 defines a small flat section 37 near the distal-most point 28.
- the plurality of peripheral electrodes 14 resembles a fork that has been bent into a loop with the tines arcing inwards to point at the central electrode 12.
- peripheral electrodes 14 are electrically insulated from the central electrode 12 by a layer of bakelite 40 or other suitable insulator.
- the peripheral electrodes 14 can be provided in a variety of shapes.
- Figure 4A illustrates the cross-sectional shape of the lower portion 25 of a peripheral electrode 14 having a generally square cross-section.
- Figure 4B illustrates the lower portion 25 of a peripheral electrode 14 having a generally rectangular cross-section.
- Figure 4C illustrates the lower portion 25 of a peripheral electrode 14 having a generally oval shape.
- Figure 4D illustrates the lower portion 25 of a peripheral electrode 14 having a generally circular shape.
- Figure 4E illustrates the lower portion 25 of a peripheral electrode 14 having a generally square shape but with rounded corners.
- Figure 4F illustrates the lower portion 25 of a peripheral electrode 14 having a generally rectangular cross-section, but with rounded corners.
- Figure 4G illustrates the lower portion 25 of a peripheral electrode 14 having a generally triangular cross-section.
- Figures 4H and 41 illustrates the upper portion 26 of a peripheral electrode 14 having the shape of an eccentric cone.
- Figures 4J and 4K illustrate the upper portion 26 of a peripheral electrode 14 having a shape of an alternative eccentric cone.
- Figures 4L and 4M illustrate the upper portion 26 of a peripheral electrode 14 having a generally flat inner side 34 and an outer side 32 which in cross-section taken along its central plane 30, the inner side 34 has a generally flat surface and the outer side 32 has a surface having the shape of a circular arc.
- Figure 4N illustrates the cross-section of an alternative upper portion 26 of the peripheral electrode 14 illustrated in Figure 4L wherein the inner side 34 is somewhat concave.
- each of the peripheral electrodes 14 is spaced apart from the central electrode 12 by a distance of between about 0.04 inches and about 0.095 inches, most typically between about 0.05 inches and about 0.07 inches.
- the spark plug 10 is capable of providing improved engine performance, including the increasing of horsepower and torque, by utilizing the excess energy from an ignition source to cause rapid ion movement that mixes with the incoming air/fuel in the combustion chamber.
- a blast of negative ions is mixed into the air fuel in the combustion chamber just prior to ignition, during the spark event and during combustion. This blast of ions changes the burn characteristics of the fuel by releasing more potential energy and slowing down the actual combustion event. This phenomenon is similar to raising the octane level of the fuel.
- ions are cooling the tips. This event often results in rapid circular flow around the central electrode.
- the spark plug of the invention need not be designed for one of a large number of specific heat ranges. For most applications, only one heat range is required. In contrast, with conventional spark plugs, as many as 20 different designs are required, one for a different heat range.
- negative ions are separated out of the electrical charge flowing from the coil. The ions travel along the periphery of the negative electrodes, building momentum along the curves of the peripheral electrodes culminating at the distal portion and then blasting a pathway toward the center electrode for the spark plasma to travel. As the piston nears top dead center of the compression/combustion stroke the combustion chamber becomes highly pressurized.
- the spark plasma is amplified and split so a plurality of sparks are emitted from the variety of the ground electrodes.
- spark kernels As many as three distinct, highly energized spark kernels have been observed during high pressure testing. The rapid ion movement impacts upon the central electrode and splays out into the air/fuel charge, heavily ionizing said charge before, during and shortly after the spark event. Thus fully utilizing, completely, the electrical charge provided by the coil.
- Another phenomenon that occurs in the use of the invention is that the moving ions create a pressure shield beneath the central electrode and in the cavity between the insulator and the inner wall of the base shell.
- This pressure shield keeps carbon from partially burnt fuel and oil from contaminating the insulator and the inner wall of the base shell, thus avoiding potential shorting of the spark.
- the rapid ion movement cools down the flame front, thus slowing down the combustion event.
- This rapid ion movement process causes an increased duration of pressure on the descending piston top.
- This rapid ion movement combustion process also ensures a more complete burn, thus lowering the percentage of unburned hydrocarbons.
- Another positive benefit concerning emissions is that the cooling aspect of the rapid ion movement keeps the NO x from rising.
- Dynometer charts are re-produced utilizing a high performance V-8 test engine. These tests were conducted by an independent facility. No changes or alterations were made to the engine with the exception of the changing of spark plugs. These charts demonstrate the increase in horsepower and torque achieved by the sparkplug of the invention compared to a typical racing spark plug of the prior art.
- Example 1 the engine for testing was a 420 cubic inch Ford FE engine with an 850 cfm Holly carburetor and 38 degrees of timing.
- the stock spark plugs were Autolite 3924 stock plugs set at a gap of .040 inches.
- the spark plugs of the invention were Autolite 3924 stock plugs modified as illustrated in Figure 1, with a gap of .058 inches.
- the engine for testing was an 812 cubic inch Ford engine with an 850 cfm Holly carburetor and 38 degrees of timing.
- the stock spark plugs were Autolite 3924 stock plugs set at a gap of 0.45 inches.
- the spark plugs of the invention were Autolite 3924 stock plugs modified as illustrated in Figure 1, with a gap of .062 inches. In Example 2, two tests were run with the spark plugs of the invention.
Landscapes
- Spark Plugs (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL10854248T PL2443711T3 (en) | 2010-08-23 | 2010-08-23 | Spark plug |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2010/046386 WO2012026919A1 (en) | 2010-08-23 | 2010-08-23 | Spark plug |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2443711A1 true EP2443711A1 (en) | 2012-04-25 |
EP2443711A4 EP2443711A4 (en) | 2012-10-24 |
EP2443711B1 EP2443711B1 (en) | 2013-11-20 |
Family
ID=45723696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10854248.1A Active EP2443711B1 (en) | 2010-08-23 | 2010-08-23 | Spark plug |
Country Status (17)
Country | Link |
---|---|
EP (1) | EP2443711B1 (en) |
JP (1) | JP5600211B2 (en) |
KR (1) | KR101439801B1 (en) |
CN (1) | CN103155313B (en) |
AU (1) | AU2010359601C1 (en) |
BR (1) | BR112013003947B1 (en) |
CA (1) | CA2809015C (en) |
DK (1) | DK2443711T3 (en) |
ES (1) | ES2443956T3 (en) |
HK (1) | HK1163943A1 (en) |
IL (1) | IL224838A (en) |
MX (1) | MX2013002090A (en) |
PL (1) | PL2443711T3 (en) |
PT (1) | PT2443711E (en) |
RU (1) | RU2542351C2 (en) |
WO (1) | WO2012026919A1 (en) |
ZA (1) | ZA201302062B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20131014A1 (en) * | 2013-06-19 | 2014-12-20 | Eldor Corp Spa | IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINES |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000001047A1 (en) * | 1998-06-29 | 2000-01-06 | Witherspoon Chris W | Corona wind spark plug |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5644548B2 (en) * | 1973-03-19 | 1981-10-20 | ||
US4439707A (en) * | 1980-07-23 | 1984-03-27 | Nippon Soken, Inc. | Spark plug with a wide discharge gap |
JP3589693B2 (en) * | 1994-03-30 | 2004-11-17 | 日本特殊陶業株式会社 | Spark plug |
CZ282875B6 (en) | 1994-12-23 | 1997-11-12 | BRISK Tábor a. s. | Ignition plug |
US5892319A (en) * | 1996-01-04 | 1999-04-06 | Rossi; Paul | Top and side firing spark plug |
US6583539B1 (en) * | 1999-08-23 | 2003-06-24 | Antonio Lopez Zamora | Spark plug with center electrode and surrounding ground electrode |
CN2515843Y (en) * | 2001-12-06 | 2002-10-09 | 唐志远 | Arc multi-electrode sparking plug |
KR20030047417A (en) * | 2001-12-10 | 2003-06-18 | 루이스 에스 카밀리 | Current peaking sparkplug |
JP2004022450A (en) * | 2002-06-19 | 2004-01-22 | Denso Corp | Spark plug for internal combustion engine |
JP2006085941A (en) * | 2004-09-14 | 2006-03-30 | Denso Corp | Spark plug for internal combustion engine |
KR20060030261A (en) * | 2004-10-05 | 2006-04-10 | 현대자동차주식회사 | Spark plug |
JP4272682B2 (en) * | 2006-10-30 | 2009-06-03 | 日本特殊陶業株式会社 | Spark plug for internal combustion engine and method for manufacturing the same |
-
2010
- 2010-08-23 CA CA2809015A patent/CA2809015C/en active Active
- 2010-08-23 JP JP2013525872A patent/JP5600211B2/en active Active
- 2010-08-23 BR BR112013003947-7A patent/BR112013003947B1/en active IP Right Grant
- 2010-08-23 RU RU2013110034/07A patent/RU2542351C2/en active
- 2010-08-23 WO PCT/US2010/046386 patent/WO2012026919A1/en active Application Filing
- 2010-08-23 AU AU2010359601A patent/AU2010359601C1/en active Active
- 2010-08-23 KR KR1020137007098A patent/KR101439801B1/en active IP Right Grant
- 2010-08-23 EP EP10854248.1A patent/EP2443711B1/en active Active
- 2010-08-23 CN CN201080069506.8A patent/CN103155313B/en active Active
- 2010-08-23 ES ES10854248.1T patent/ES2443956T3/en active Active
- 2010-08-23 PL PL10854248T patent/PL2443711T3/en unknown
- 2010-08-23 MX MX2013002090A patent/MX2013002090A/en active IP Right Grant
- 2010-08-23 DK DK10854248.1T patent/DK2443711T3/en active
- 2010-08-23 PT PT108542481T patent/PT2443711E/en unknown
-
2012
- 2012-04-27 HK HK12104199.7A patent/HK1163943A1/en unknown
-
2013
- 2013-02-21 IL IL224838A patent/IL224838A/en active IP Right Grant
- 2013-03-19 ZA ZA2013/02062A patent/ZA201302062B/en unknown
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000001047A1 (en) * | 1998-06-29 | 2000-01-06 | Witherspoon Chris W | Corona wind spark plug |
Non-Patent Citations (1)
Title |
---|
See also references of WO2012026919A1 * |
Also Published As
Publication number | Publication date |
---|---|
PT2443711E (en) | 2014-02-17 |
ZA201302062B (en) | 2014-02-26 |
AU2010359601C1 (en) | 2015-11-12 |
EP2443711B1 (en) | 2013-11-20 |
DK2443711T3 (en) | 2014-02-17 |
AU2010359601B2 (en) | 2014-07-31 |
BR112013003947B1 (en) | 2024-01-09 |
CA2809015A1 (en) | 2012-03-01 |
JP2013536558A (en) | 2013-09-19 |
JP5600211B2 (en) | 2014-10-01 |
ES2443956T3 (en) | 2014-02-21 |
KR20130062990A (en) | 2013-06-13 |
BR112013003947A2 (en) | 2017-12-19 |
CA2809015C (en) | 2016-02-09 |
HK1163943A1 (en) | 2012-09-14 |
PL2443711T3 (en) | 2014-04-30 |
MX2013002090A (en) | 2013-12-02 |
KR101439801B1 (en) | 2014-09-11 |
CN103155313B (en) | 2015-09-23 |
RU2542351C2 (en) | 2015-02-20 |
WO2012026919A1 (en) | 2012-03-01 |
CN103155313A (en) | 2013-06-12 |
IL224838A (en) | 2016-05-31 |
EP2443711A4 (en) | 2012-10-24 |
RU2013110034A (en) | 2014-09-27 |
AU2010359601A1 (en) | 2013-03-07 |
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