US2048481A - Spark plug - Google Patents
Spark plug Download PDFInfo
- Publication number
- US2048481A US2048481A US40234A US4023435A US2048481A US 2048481 A US2048481 A US 2048481A US 40234 A US40234 A US 40234A US 4023435 A US4023435 A US 4023435A US 2048481 A US2048481 A US 2048481A
- Authority
- US
- United States
- Prior art keywords
- heat
- sleeve
- arms
- electrode
- spark plug
- 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.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
Images
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 insulating sleeve from overheating while providing a sufliciently high temperature but not an excessively high temperature, at and in the neighborhood of the spark gap, to controllably relieve the insulating sleeve from the burden of conducting heat from the electrode that projects from its inner end, and to efllciently use the heat conductivity of the water jacket of the cylinder head for dissipating heat from the spark" plug.
- the invention consists of a spark plug including a body internally provided with a shoulder and externally provided with a shoulder and externally provided with a thread arranged in proximity with each other for good heat transfer, to the water jacket, said body having a single annular opening at its inner end, and including a shouldered refractory sleeve having an electrode projecting from its inner end; there being provided a second electrode consisting of a gasket seated between said shoulders in proximity with the water jacket and of a ring in proximity with the first mentioned electrode to provide a spark gap and of arms extending from the ring to the gasket and which carry current and also conduct heat from the spark gap to the body thereby lessening the burden of heat conduction imposed on the refractory sleeve to an extent controlled by the size of the arms.
- the invention also comprises the improvements to be presently described and finally claimed.
- Figure 2 is a perspective view of the electrode which assists the sleeve of refractory material in conducting heat from the neighborhood of the spark gap to the body near the water jacket.
- i is the body of the plug, and it is provided with a single annular opening 2 at its inner end.
- the body Internally the body is provided with a shoulder 3 and externally the body is provided with a thread 4. The thread and the shoulder are arranged in heat conducting proximity with each other and with the water of the jacket 5 oi the cylinder head.
- 6 is a'sleeve of refractory heat conducting and electrically insulating material and it is shouldered as at l.
- the sleeve 6 is provided at its inner end with a projecting electrode 8.
- the other electrode structure comprises a ring 9 in proximity with the elec- 5 trode 8 to provide a spark gap, and a gasket l0 seated between the shoulders 3 and 'l, and arms II of which two are shown, but the number and Size of the arms H are determined by the quantity of heat they are required to conduct from 10 the region of the spark gap to the body and water jacket in order to permit the sleeve 6 to conduct a suillcient quantity of heat to keep the electrode 8 below a temperature that would injure it and at a sufllciently high temperature to insure the presence of a good spark by preventing the deposition of carbon on the electrode.
- the hottest part of the device is in a zone surrounding the parts 8 and 9 and the sleeve 6 is very hot, probably hotter than the plug. It is an important feature of the invention that heat be transferred from that zone and dissipated.
- the coolest region is in the neighborhood of the gasket Hi. It is the function of the arms to conduct heat from the zone to the cooler region of the device and for that purpose'two things are desirable: first, that good heat conducting contact be made between the arms H and the body and this the gasket accomplishes; and second, that the arms be not unduly heated between the zone and region referred to. This is accomplished by keeping the arms out of contact with the sleeve 6, and it is well to keep the arms out of substantial contact with the body I. The line contact at the inner rim of the opening 2 is negligible.
Description
Patented July 21, 1936 UNITED STATES PATENT OFFICE 2 Claims.
. the insulating sleeve from overheating while providing a sufliciently high temperature but not an excessively high temperature, at and in the neighborhood of the spark gap, to controllably relieve the insulating sleeve from the burden of conducting heat from the electrode that projects from its inner end, and to efllciently use the heat conductivity of the water jacket of the cylinder head for dissipating heat from the spark" plug.
Other objects of the invention will appear from the following description at the end of which the invention will be claimed.
Generally stated, the invention consists of a spark plug including a body internally provided with a shoulder and externally provided with a shoulder and externally provided with a thread arranged in proximity with each other for good heat transfer, to the water jacket, said body having a single annular opening at its inner end, and including a shouldered refractory sleeve having an electrode projecting from its inner end; there being provided a second electrode consisting of a gasket seated between said shoulders in proximity with the water jacket and of a ring in proximity with the first mentioned electrode to provide a spark gap and of arms extending from the ring to the gasket and which carry current and also conduct heat from the spark gap to the body thereby lessening the burden of heat conduction imposed on the refractory sleeve to an extent controlled by the size of the arms.
The invention also comprises the improvements to be presently described and finally claimed.
In the following description reference will be made to the accompanying drawing forming part hereof and in whic Figure 1 is a view principally in central section of a spark plug embodying features of the invention; and
Figure 2 is a perspective view of the electrode which assists the sleeve of refractory material in conducting heat from the neighborhood of the spark gap to the body near the water jacket.
In the drawing, i is the body of the plug, and it is provided with a single annular opening 2 at its inner end. Internally the body is provided with a shoulder 3 and externally the body is provided with a thread 4. The thread and the shoulder are arranged in heat conducting proximity with each other and with the water of the jacket 5 oi the cylinder head. 6 is a'sleeve of refractory heat conducting and electrically insulating material and it is shouldered as at l. The sleeve 6 is provided at its inner end with a projecting electrode 8. The other electrode structure comprises a ring 9 in proximity with the elec- 5 trode 8 to provide a spark gap, and a gasket l0 seated between the shoulders 3 and 'l, and arms II of which two are shown, but the number and Size of the arms H are determined by the quantity of heat they are required to conduct from 10 the region of the spark gap to the body and water jacket in order to permit the sleeve 6 to conduct a suillcient quantity of heat to keep the electrode 8 below a temperature that would injure it and at a sufllciently high temperature to insure the presence of a good spark by preventing the deposition of carbon on the electrode.
The hottest part of the device is in a zone surrounding the parts 8 and 9 and the sleeve 6 is very hot, probably hotter than the plug. It is an important feature of the invention that heat be transferred from that zone and dissipated. The coolest region is in the neighborhood of the gasket Hi. It is the function of the arms to conduct heat from the zone to the cooler region of the device and for that purpose'two things are desirable: first, that good heat conducting contact be made between the arms H and the body and this the gasket accomplishes; and second, that the arms be not unduly heated between the zone and region referred to. This is accomplished by keeping the arms out of contact with the sleeve 6, and it is well to keep the arms out of substantial contact with the body I. The line contact at the inner rim of the opening 2 is negligible.
It will be obvious to those skilled in the art to which the invention relates that modifications may be made in details of construction and in matters of mere form without departing from 0 the spirit of the invention which is not limited to such matters or otherwise than as the prior art and the appended claims may require.
I claim:
1. A spark plug having an electrode structure 45.
comprising at its inner end a gasket and at its outer end a ring and current carrying and heat conducting arms connecting the gasket and the ring, in combination with a refractory sleeve having at its inner end a projecting electrode providing with the ring a spark gap, and with a body externally threaded for insertion through the water jacket of a cylinder head, said sleeve and body having shoulders between which the asket is held in proximity with the thread on y 1, 936. G. BABCOCK 2,048,482
TELEPHONE ADAPTER Filed May 21, 1932 2 Sheets-Sheet 1
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40234A US2048481A (en) | 1935-09-12 | 1935-09-12 | Spark plug |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40234A US2048481A (en) | 1935-09-12 | 1935-09-12 | Spark plug |
Publications (1)
Publication Number | Publication Date |
---|---|
US2048481A true US2048481A (en) | 1936-07-21 |
Family
ID=21909883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US40234A Expired - Lifetime US2048481A (en) | 1935-09-12 | 1935-09-12 | Spark plug |
Country Status (1)
Country | Link |
---|---|
US (1) | US2048481A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3509403A (en) * | 1967-07-24 | 1970-04-28 | Cecil J Krow | Spark plug having a reversible inner electrode |
US5230309A (en) * | 1991-11-11 | 1993-07-27 | Honda Giken Kogyo Kabushiki Kaisha | Spark plug heater control system for internal combustion engine |
WO1993021674A1 (en) * | 1992-04-09 | 1993-10-28 | Hipp Augustus J | High performance spark plug |
US5280214A (en) * | 1989-10-13 | 1994-01-18 | Ultra Performance International, Inc. | Spark plug with a ground electrode concentrically disposed to a central electrode |
US5408961A (en) * | 1993-08-09 | 1995-04-25 | Innovative Automative Technologies Int. Ltd. | Ignition plug |
US5982079A (en) * | 1995-12-29 | 1999-11-09 | Kibbey; Wilbur R. | Spark plug with a looped ground electrode concentrically disposed to a center electrode |
-
1935
- 1935-09-12 US US40234A patent/US2048481A/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3509403A (en) * | 1967-07-24 | 1970-04-28 | Cecil J Krow | Spark plug having a reversible inner electrode |
US5280214A (en) * | 1989-10-13 | 1994-01-18 | Ultra Performance International, Inc. | Spark plug with a ground electrode concentrically disposed to a central electrode |
US5230309A (en) * | 1991-11-11 | 1993-07-27 | Honda Giken Kogyo Kabushiki Kaisha | Spark plug heater control system for internal combustion engine |
WO1993021674A1 (en) * | 1992-04-09 | 1993-10-28 | Hipp Augustus J | High performance spark plug |
US5408961A (en) * | 1993-08-09 | 1995-04-25 | Innovative Automative Technologies Int. Ltd. | Ignition plug |
US5982079A (en) * | 1995-12-29 | 1999-11-09 | Kibbey; Wilbur R. | Spark plug with a looped ground electrode concentrically disposed to a center electrode |
US6344707B1 (en) | 1995-12-29 | 2002-02-05 | Flashpoint, Inc. | Spark plug |
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