EP1060546A1 - Spark plug providing improved operating characteristics - Google Patents
Spark plug providing improved operating characteristicsInfo
- Publication number
- EP1060546A1 EP1060546A1 EP99911035A EP99911035A EP1060546A1 EP 1060546 A1 EP1060546 A1 EP 1060546A1 EP 99911035 A EP99911035 A EP 99911035A EP 99911035 A EP99911035 A EP 99911035A EP 1060546 A1 EP1060546 A1 EP 1060546A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- center electrode
- edge
- spark plug
- electrode
- ground electrode
- 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
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
Definitions
- the present invention generally relates to spark plugs for igniting the fuel charge in an internal combustion engine, and is particularly concerned with an improved spark plug construction which improves combustion pressure, fuel mileage and diminishes exhaust pollution as compared with known prior art plugs.
- Fig. 2 is a side plan view of the first embodiment shown in Fig. 1, being a spark plug 10.
- Fig. 3 is a top view of two electrodes, a ground electrode 51 and a center electrode 20, used in a second embodiment of the present invention, which could be considered a "forked" configuration, with two tangential relationships and one vertex.
- Fig. 7 is a top view of two electrodes, a ground electrode 70 and a center electrode 20, used in a sixth embodiment of the present invention, which could be considered a "closed box" configuration, with four tangential relationships and four vertexes.
- Fig. 9 is a top view of two electrodes, a ground electrode 90 and a center electrode 20, used in a eighth embodiment of the present invention, which could be considered a "single offset straight electrode" configuration, with one tangential relationship.
- Fig. 17 shows the use of four ground electrodes 170
- each linear segment of the ground electrode is substantially rectangular.
- Fig. 19 is similar to that shown in Fig. 1 1 , and shows a triangular- shaped ground electrode 190, but with a triangular center electrode 195. Three tangential edge relationships and three vertexes are shown in this figure.
- Fig 40A and B are top and side plan views, respectively, of a configuration including a T-shaped center electrode 405 having T-shaped ends each defining an edge, and a pair of ground electrodes 400, 401 likewise each defining an edge.
- the edges of the center electrode are presented to the edges of the ground electrodes in a one-to-one relationship.
- Fig. 48 illustrates a believed difference in concentric and nonconcentric electrode properties, showing a concentric ground electrode 480, an "open" ground electrode 481 , each in association with a typical center electrode 20. As may be seen, open electrode surfaces are believed by the inventor to tend to encourage flame kernel propagation.
- a “box” plug shown in Figs. 1 and 2.
- the “box” plug uses an electrode that is substantially in the shape of a square that appears to "encircle” the spark plug's center electrode, when viewed from above. However, in fact, as shown in Fig. 2, the box does not encircle the spark plug's center electrode, as there is a gap (0.025" in the case of one test) defined between the upper round end surface of the center electrode and the plane in which the downwardly- directed lower surfaces of the split prong members lie.
- Fig. 3 is a top view of two electrodes, a ground electrode 51 and a center electrode 20, used in a second embodiment of the present invention, which could be considered a "forked" configuration, with two tangential relationships and one vertex.
- Fig. 6 is a top view of two electrodes, a ground electrode 60 and a center electrode 20, used in a fifth embodiment of the present invention, with four segments, three vertexes, and four tangential relationships.
- Fig. 9 is a top view of two electrodes, a ground electrode 90 and a center electrode 20, used in a eighth embodiment of the present invention, which could be considered a "single offset straight electrode" configuration, with one tangential relationship.
- Fig. 16 shows a simple straight edge presented to the center electrode. One tangential edge relationship is shown. The cross-section of the ground electrode is rectangular. Fig. 17 shows the use of four ground electrodes 170,
- Fig. 22 is an open ended design similar to that shown in Fig. 21, except with a center electrode 225 shaped substantially matching the ground electrode 220 geometry, which in this case is square. Three tangential relationships are shown.
- Fig. 23 shows a "forked" design, in which two curved tangential edge relationships exist, with a single vertex therein. A ground electrode 220 and a center electrode 230 are shown.
- Fig. 33 is a view of an embodiment including a ground electrode which is similar to Fig. 1, except that a simple notch has been cut into the center electrode 335 to improve spark efficiency.
- Fig. 34 is a side cross-sectional view of an embodiment similar to that of Fig. 1 , including a ground electrode 340, except that a "necked-down" section is provided at the top of the center electrode 345, creating a "fine wire” discharge tip to the center electrode.
- Fig. 36 shows a configuration which includes "maximized edge-to-edge presentation" of two edges defined by the center and ground electrodes 365, 360, respectively. While possibly more expensive to manufacture than other embodiments, this design presents a less shielded edge-to-edge spark to the combustion chamber. The small sizes of the electrodes are also believed to serve to reduce blockage to the incoming fuel charge and the existing flame kernel.
- Figs 41 A and 41 B are top and side plan views, respectively, of a configuration including and L-shaped center electrode 415 and a ground electrode 410, with curved tangential edges. Note that two segments could be used such as in Figs. 40 A and 40B, or more than two segments could be used, either with this configuration of the Figs. 40A/40B configuration. 18
- Fig. 45 is an illustrative top plan view of an exemplary center electrode 20 and a two-pronged ground electrode 450, which is similar to that shown in Fig. 3 but has shorter prongs which provide two tangential relationships 453, 454, as shown in the case 2 example in Fig. 44.
- An intermediate vertex 455 is also shown.
- Fig. 47 is a "wide-fork" configuration which is similar to that of Fig. 3, except that instead of having two tangential relationships, the two edges of the ground electrode 470 are outside the projection of the exemplary center electrode 20, and in the "zone” of Fig. 26. In the inventor's opinion at the time of filing, this provides additional room under the "intake charge flow" concept illustrated in Fig. 26. 19
- a one or more straight edges in a tangential relationship with the circular (a.k.a "round") upper edge of the ground electrode.
- This will be referred to as a "straight edge tangential relationship" in that the straight edge defined by the ground electrode presents one or more straight edges such that each edge is in a tangential relationship to the center electrode's circumferential projection.
- Figs. 1 , 3, 4, 9, and 10 Such is shown in, for example only, Figs. 1 , 3, 4, 9, and 10, although many others are shown).
- edges which are presented or exposed to each other are not necessarily tangential, but they do present themselves to each other such that the edges are the closest parts of the two electrodes to each other, or are at least as close as any other two parts of the electrodes, within the region of spark. It is believed at the time of filing that the edges which are presented or exposed to each other are not necessarily tangential, but they do present themselves to each other such that the edges are the closest parts of the two electrodes to each other, or are at least as close as any other two parts of the electrodes, within the region of spark. It is believed at the time of filing that the edges which are presented or exposed to each other are not necessarily tangential, but they do present themselves to each other such that the edges are the closest parts of the two electrodes to each other, or are at least as close as any other two parts of the electrodes, within the region of spark. It is believed at the time of filing that the edges which are presented or exposed to each other are not necessarily tangential, but they do present themselves to each other such that the edges are the closest parts of the two
- the thickness of the ground electrodes, including the end portions (including their segments), is as known in the art, or approximately 0.050", although the thickness can be 0.040 - 0.065", although it could be 0.010"- 0.150", or other dimensions without departing from the spirit and scope of the present invention.
- the width of the "stem" can be 0.075 - 0.125" , although it could be
- ground electrode be square or rectangular, as long as it 22
Landscapes
- Spark Plugs (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Fats And Perfumes (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Discharge Lamp (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK99911035T DK1060546T3 (en) | 1998-03-02 | 1999-03-02 | Spark plug with improved operational characteristics |
Applications Claiming Priority (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7666998P | 1998-03-02 | 1998-03-02 | |
US76669P | 1998-03-02 | ||
US8949198P | 1998-06-16 | 1998-06-16 | |
US8949998P | 1998-06-16 | 1998-06-16 | |
US8945898P | 1998-06-16 | 1998-06-16 | |
US89491P | 1998-06-16 | ||
US89458P | 1998-06-16 | ||
US89499P | 1998-06-16 | ||
US11443998P | 1998-12-31 | 1998-12-31 | |
US114439P | 1998-12-31 | ||
PCT/US1999/004552 WO1999045615A1 (en) | 1998-03-02 | 1999-03-02 | Spark plug providing improved operating characteristics |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1060546A1 true EP1060546A1 (en) | 2000-12-20 |
EP1060546B1 EP1060546B1 (en) | 2004-11-10 |
Family
ID=27536099
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99911035A Expired - Lifetime EP1060546B1 (en) | 1998-03-02 | 1999-03-02 | Spark plug providing improved operating characteristics |
Country Status (18)
Country | Link |
---|---|
EP (1) | EP1060546B1 (en) |
JP (1) | JP4451984B2 (en) |
KR (1) | KR100701370B1 (en) |
CN (1) | CN100355167C (en) |
AT (1) | ATE282253T1 (en) |
AU (1) | AU754005B2 (en) |
BR (1) | BRPI9908448B1 (en) |
CA (1) | CA2321616C (en) |
CZ (1) | CZ300538B6 (en) |
DE (1) | DE69921784T2 (en) |
DK (1) | DK1060546T3 (en) |
ES (1) | ES2232118T3 (en) |
ID (1) | ID26507A (en) |
MX (1) | MXPA00008609A (en) |
NZ (1) | NZ506965A (en) |
PL (1) | PL195775B1 (en) |
PT (1) | PT1060546E (en) |
WO (1) | WO1999045615A1 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3988426B2 (en) * | 2001-01-18 | 2007-10-10 | 株式会社デンソー | Spark plug |
JP4125060B2 (en) * | 2002-07-16 | 2008-07-23 | 日本特殊陶業株式会社 | Spark plug |
JP4699918B2 (en) * | 2006-03-03 | 2011-06-15 | 日本特殊陶業株式会社 | Spark plug |
TWM378559U (en) * | 2009-11-16 | 2010-04-11 | Top 1 Green Dev Co Ltd | Spark plug |
JP5593236B2 (en) * | 2010-02-09 | 2014-09-17 | 株式会社デンソー | Spark plug for internal combustion engine |
US8288930B2 (en) * | 2010-05-14 | 2012-10-16 | Federal-Mogul Ignition Company | Spark ignition device and ground electrode therefor and methods of construction thereof |
CN102611005B (en) * | 2012-04-16 | 2015-08-26 | 张蝶儿 | A kind of spark plug and ground electrode thereof |
JP5862498B2 (en) * | 2012-07-18 | 2016-02-16 | 株式会社デンソー | Spark plug for internal combustion engine |
CN103247937A (en) * | 2013-05-02 | 2013-08-14 | 株洲湘火炬火花塞有限责任公司 | Spark plug side electrode and manufacturing method thereof |
US9484717B2 (en) * | 2013-12-26 | 2016-11-01 | Chentronics, Llc | High energy ignition spark igniter |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4268774A (en) * | 1977-01-28 | 1981-05-19 | Forkum Jr Maston | Spark plug with ground electrode having diverging prongs |
US5051651A (en) * | 1988-11-24 | 1991-09-24 | Tadaharu Fujiwara | Ignition plug with a hollow cylindrical ground electrode and an ignition process by the use thereof |
DE3935165A1 (en) * | 1989-10-21 | 1991-04-25 | Hermsdorf Keramik Veb | Sparking plug with earthed electrodes curved towards centre - so that movement of combustible mixt. prolongs spark migrating towards region where inter electrode distance is greater |
US5264754A (en) * | 1992-01-24 | 1993-11-23 | Santoso Hanitijo | Spark plug |
DE9403943U1 (en) * | 1994-03-04 | 1994-06-09 | Zuran, Dietmar, 12355 Berlin | Electrode shape and arrangement for a multi-spark plug |
JP3849159B2 (en) * | 1995-09-22 | 2006-11-22 | 保 仲野 | Spark plug |
-
1999
- 1999-03-02 ES ES99911035T patent/ES2232118T3/en not_active Expired - Lifetime
- 1999-03-02 JP JP2000535069A patent/JP4451984B2/en not_active Expired - Fee Related
- 1999-03-02 CN CNB998035505A patent/CN100355167C/en not_active Expired - Lifetime
- 1999-03-02 MX MXPA00008609A patent/MXPA00008609A/en not_active IP Right Cessation
- 1999-03-02 DK DK99911035T patent/DK1060546T3/en active
- 1999-03-02 DE DE69921784T patent/DE69921784T2/en not_active Expired - Lifetime
- 1999-03-02 BR BRPI9908448-1A patent/BRPI9908448B1/en not_active IP Right Cessation
- 1999-03-02 NZ NZ506965A patent/NZ506965A/en not_active IP Right Cessation
- 1999-03-02 WO PCT/US1999/004552 patent/WO1999045615A1/en active IP Right Grant
- 1999-03-02 KR KR1020007009713A patent/KR100701370B1/en not_active IP Right Cessation
- 1999-03-02 ID IDW20001677A patent/ID26507A/en unknown
- 1999-03-02 CZ CZ20003201A patent/CZ300538B6/en not_active IP Right Cessation
- 1999-03-02 PT PT99911035T patent/PT1060546E/en unknown
- 1999-03-02 EP EP99911035A patent/EP1060546B1/en not_active Expired - Lifetime
- 1999-03-02 AU AU29772/99A patent/AU754005B2/en not_active Ceased
- 1999-03-02 AT AT99911035T patent/ATE282253T1/en not_active IP Right Cessation
- 1999-03-02 CA CA002321616A patent/CA2321616C/en not_active Expired - Fee Related
- 1999-03-02 PL PL99342728A patent/PL195775B1/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9945615A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP4451984B2 (en) | 2010-04-14 |
DE69921784D1 (en) | 2004-12-16 |
AU754005B2 (en) | 2002-10-31 |
KR20010034551A (en) | 2001-04-25 |
CZ300538B6 (en) | 2009-06-10 |
BR9908448A (en) | 2004-06-15 |
CA2321616C (en) | 2008-02-05 |
KR100701370B1 (en) | 2007-03-28 |
CZ20003201A3 (en) | 2001-01-17 |
EP1060546B1 (en) | 2004-11-10 |
CN100355167C (en) | 2007-12-12 |
ES2232118T3 (en) | 2005-05-16 |
ID26507A (en) | 2001-01-11 |
PL342728A1 (en) | 2001-07-02 |
DK1060546T3 (en) | 2005-02-14 |
DE69921784T2 (en) | 2005-12-22 |
PL195775B1 (en) | 2007-10-31 |
MXPA00008609A (en) | 2003-07-14 |
CA2321616A1 (en) | 1999-09-10 |
BRPI9908448B1 (en) | 2015-06-09 |
JP2002506278A (en) | 2002-02-26 |
WO1999045615A1 (en) | 1999-09-10 |
PT1060546E (en) | 2005-02-28 |
ATE282253T1 (en) | 2004-11-15 |
NZ506965A (en) | 2003-07-25 |
CN1292161A (en) | 2001-04-18 |
AU2977299A (en) | 1999-09-20 |
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