CA1122087A - Dual internal electric spark plug - Google Patents
Dual internal electric spark plugInfo
- Publication number
- CA1122087A CA1122087A CA000306316A CA306316A CA1122087A CA 1122087 A CA1122087 A CA 1122087A CA 000306316 A CA000306316 A CA 000306316A CA 306316 A CA306316 A CA 306316A CA 1122087 A CA1122087 A CA 1122087A
- Authority
- CA
- Canada
- Prior art keywords
- insulator
- electrodes
- time
- pair
- 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
Links
Landscapes
- Spark Plugs (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A spark plug, consisting of a metal body, having in-sulator means, in which is secured a pair of spaced-apart elec-trodes, each of which has, integral therein, a solid state, time-delay device, for improving engine performance and lessening air pollution. Each of the electrodes with time-delay devices extends from the top of the insulation means, for receiving the high tension wires of an internal combustion engine, and the spark plug includes two bottom and spaced-apart electrodes of the metal body, the insulation means having an integral and projecting shield, which is spaced apart from the electrodes. The structure of this plug is such, that it is adaptable for both single and dual, high voltage systems.
A spark plug, consisting of a metal body, having in-sulator means, in which is secured a pair of spaced-apart elec-trodes, each of which has, integral therein, a solid state, time-delay device, for improving engine performance and lessening air pollution. Each of the electrodes with time-delay devices extends from the top of the insulation means, for receiving the high tension wires of an internal combustion engine, and the spark plug includes two bottom and spaced-apart electrodes of the metal body, the insulation means having an integral and projecting shield, which is spaced apart from the electrodes. The structure of this plug is such, that it is adaptable for both single and dual, high voltage systems.
Description
Z~ 7 This invention relates to ignition devices, and more particularly, to a dual internal electric spark plug.
This application relates to and describes an improvement over the invention described in my prior Canadian application Serial No. 274,830 filed March 28, 1977.
It is, therefore, the princi~al object of this invention to provide a dual internal electric spark plug.
Another object of this invention is to provide a dual internal electric spark plug, which will be of such struc~ur-e,so as to be adaptable to the existing single spark plug opening of an engine cylinder, while providing a means of increasing engine performance, and simultaneously decreasing air pollution by causing an engine to burn fuel more cleanly.
Another object of this invention is to provide dual internal electric spark plug, which will be adaptable to both single and dual, high voltage systems of internal combustion engines.
A further object of this invention is to provide a dual internal electric spark plug, which will employ a pair of solid state, time-delay devices in its high-tension voltage receiving electrodes, within the insulation structure of the spark plug, and delay in timing will be based on the requirements of the plug, as desired by the manufacturer. In effect, firing at the spark plug gaps may be synchronized, or not.
Other objects of the invention are to provide a dual internal electric spark plug, which is simple in design, inexpensive to manufacture, rugged in construction, and efficient in operation.
.
.
;20~37 Thus, in its broad aspect the invention provides an improved dual internal spark plug, comprising, in combination, an insulator, a casing around said insulator, means for attaching said casing for attachment to an engine cylinder head, and a pair of electrodes through said insulator, one protruding end of said electrodes being designed for connection to electric wiring connectors, and opposite protruding ends comprising positive contacts respective to substantially L-shaped anvil negative contacts formed on said casing, and each of said electrodes being interrupted by solid state H.V. time-delay device.
In a further aspect the invention provides dual electric spark plug, comprising a cylindrical metal casing with a threaded barrel for insertion into an opening of an internal combustion engine, an integral cap nut, a pair of spaced apart electrodes secured within an insulator, secured in said cylindrical metal casing, a palr of solid state, time-delay devices secured in said insulator for time-delay firing of the spark plug between its electrode tips, and a pair of ground anvils, and shield means extending from said insulator, between said:electrode tips and said ground anvils.
These and other objects, will be readily evident upon a study of the following specification and the accompanying drawings, wherein: .
:
~ - la -~ ~.
Z08~
FIGURE 1 is an enlarged vertical view of the present invention, shown in elevation;
FIGURE 2 is a cross-sectional view taken on the long-itudinal axis of Figure 1, and FIGURE 3 is a bottom plan view of Figure 1.
According to this invention, a spark plug 10 is shown to include a cylindrical metal casing 11, having a conventional and integral cap nut lla, and an externally threaded barrel 12, for being received in the conventional spark plug opening of a cylinder of an internal combustion engine. Secured fixedly on the interior of casing 11, is a cylindrical insulator 13, which has exterior and annular ridges 14 for air cooling purposes.
Insulator 13 is terminated at the top of spark plug 10, by a pair of projections 15, which are integral therewith. A pair of spaced-apart electrodes 16 are fixedly secured in insulator 13, and, in each, is electrically connected a solid state time-delay device 16a.
~ It shall be noted, that the electronic values of the ~ - solid state time-delay devices 16a, may, or may not be the same in terms of delay. This will be determlned by the application~
of the spark plug.
-: , -~ The electrode tips 17 of electrodes 16, extend from ~ ~ , ~ the bottom of insulator 13, and are spaced from the "L" shaped :
ground anvils 18, which are integral of;the barrel 12. The ground anvils 18 are spaced apart from tips 17, and the ends of the ground anvils 18 are spaced apart from a projecting shield 19, which is integral of insuIator 13. The space between tips 17 and the ground anvils 18, is where the high voltage spark~
takes place.
At the top of electrodes 16 is a shank portion 20, which is terminated by conventional tips 21 for receiving the :
This application relates to and describes an improvement over the invention described in my prior Canadian application Serial No. 274,830 filed March 28, 1977.
It is, therefore, the princi~al object of this invention to provide a dual internal electric spark plug.
Another object of this invention is to provide a dual internal electric spark plug, which will be of such struc~ur-e,so as to be adaptable to the existing single spark plug opening of an engine cylinder, while providing a means of increasing engine performance, and simultaneously decreasing air pollution by causing an engine to burn fuel more cleanly.
Another object of this invention is to provide dual internal electric spark plug, which will be adaptable to both single and dual, high voltage systems of internal combustion engines.
A further object of this invention is to provide a dual internal electric spark plug, which will employ a pair of solid state, time-delay devices in its high-tension voltage receiving electrodes, within the insulation structure of the spark plug, and delay in timing will be based on the requirements of the plug, as desired by the manufacturer. In effect, firing at the spark plug gaps may be synchronized, or not.
Other objects of the invention are to provide a dual internal electric spark plug, which is simple in design, inexpensive to manufacture, rugged in construction, and efficient in operation.
.
.
;20~37 Thus, in its broad aspect the invention provides an improved dual internal spark plug, comprising, in combination, an insulator, a casing around said insulator, means for attaching said casing for attachment to an engine cylinder head, and a pair of electrodes through said insulator, one protruding end of said electrodes being designed for connection to electric wiring connectors, and opposite protruding ends comprising positive contacts respective to substantially L-shaped anvil negative contacts formed on said casing, and each of said electrodes being interrupted by solid state H.V. time-delay device.
In a further aspect the invention provides dual electric spark plug, comprising a cylindrical metal casing with a threaded barrel for insertion into an opening of an internal combustion engine, an integral cap nut, a pair of spaced apart electrodes secured within an insulator, secured in said cylindrical metal casing, a palr of solid state, time-delay devices secured in said insulator for time-delay firing of the spark plug between its electrode tips, and a pair of ground anvils, and shield means extending from said insulator, between said:electrode tips and said ground anvils.
These and other objects, will be readily evident upon a study of the following specification and the accompanying drawings, wherein: .
:
~ - la -~ ~.
Z08~
FIGURE 1 is an enlarged vertical view of the present invention, shown in elevation;
FIGURE 2 is a cross-sectional view taken on the long-itudinal axis of Figure 1, and FIGURE 3 is a bottom plan view of Figure 1.
According to this invention, a spark plug 10 is shown to include a cylindrical metal casing 11, having a conventional and integral cap nut lla, and an externally threaded barrel 12, for being received in the conventional spark plug opening of a cylinder of an internal combustion engine. Secured fixedly on the interior of casing 11, is a cylindrical insulator 13, which has exterior and annular ridges 14 for air cooling purposes.
Insulator 13 is terminated at the top of spark plug 10, by a pair of projections 15, which are integral therewith. A pair of spaced-apart electrodes 16 are fixedly secured in insulator 13, and, in each, is electrically connected a solid state time-delay device 16a.
~ It shall be noted, that the electronic values of the ~ - solid state time-delay devices 16a, may, or may not be the same in terms of delay. This will be determlned by the application~
of the spark plug.
-: , -~ The electrode tips 17 of electrodes 16, extend from ~ ~ , ~ the bottom of insulator 13, and are spaced from the "L" shaped :
ground anvils 18, which are integral of;the barrel 12. The ground anvils 18 are spaced apart from tips 17, and the ends of the ground anvils 18 are spaced apart from a projecting shield 19, which is integral of insuIator 13. The space between tips 17 and the ground anvils 18, is where the high voltage spark~
takes place.
At the top of electrodes 16 is a shank portion 20, which is terminated by conventional tips 21 for receiving the :
- 2 .~, , llZ2()B7 high tension wires of the ignition system.
While various changes may be made in the detail con-struction, it is understood that such changes will be within the spirit and scope of the present invention, as is defined by the appended claims.
, ... .
ll;~Z087 SUPPLEMENTARY DISCLOSURE
The solid-state time delay devices of the present invention are preferably in the form of diodes or solid state semiconductors. In each case the specific physical and electrical design requirements for a given application will be specified by the user and the plugs will be made up accordingly. Such factors as the physical environment; e.g., temperature, voltage, in which the plug is to be used will affect those specific requirements.
The particular number and arrangement of the components of the time delay devices can be varied as required to achieve the desired time differential between sparks.
In drawings which illustrate embodiments of the invention, Figures 4 to 9 are circuit diagrams illustrating various combinations of diodes which can be employed in the invention.
Figure 10 is a cross-sectional view taken along the longitudinal axis of an embodiment of the invention wherein the time delay devices are selectively adjustable to different values;
Figure 11 is a cross section of the embodiment of Figure 10 taken along the line 11-11.
With reference to Figure 4, the diodes Dl and D2 may or may not be electrically equal, depending on the requirements of the system. This ` applies to each of the other diodes D3 to D5~illustrated in other of the Figures 5 to 9.
; The unidirectional nature of the diodes serves to prevent flashback.
It is to be understood that Figures 4 to 6 are representative examples only and that the invention is in no way limited by these examples.
Turning to Figures 10 and 11, an additional embodiment of the invention is illustrated wherein the time delay device 16a in at least one of the electrodes 16 is selectively adjustable. Thus, as illustrated in the two drawings, four such time delay devices 16a representing at least two different delay periods are provided. These are mounted _ . ~
k :
~i. .
.
.
in a rotatable barrel 22 constructed of insulator material. Barrel 22 is rotatably mounted in a chamher 23 in the insulator 13 by means of spring-biased pin 24. The time delay devices 16a are also preEerably spring biased to ensure good contact.
,:, . . ~ .
While various changes may be made in the detail con-struction, it is understood that such changes will be within the spirit and scope of the present invention, as is defined by the appended claims.
, ... .
ll;~Z087 SUPPLEMENTARY DISCLOSURE
The solid-state time delay devices of the present invention are preferably in the form of diodes or solid state semiconductors. In each case the specific physical and electrical design requirements for a given application will be specified by the user and the plugs will be made up accordingly. Such factors as the physical environment; e.g., temperature, voltage, in which the plug is to be used will affect those specific requirements.
The particular number and arrangement of the components of the time delay devices can be varied as required to achieve the desired time differential between sparks.
In drawings which illustrate embodiments of the invention, Figures 4 to 9 are circuit diagrams illustrating various combinations of diodes which can be employed in the invention.
Figure 10 is a cross-sectional view taken along the longitudinal axis of an embodiment of the invention wherein the time delay devices are selectively adjustable to different values;
Figure 11 is a cross section of the embodiment of Figure 10 taken along the line 11-11.
With reference to Figure 4, the diodes Dl and D2 may or may not be electrically equal, depending on the requirements of the system. This ` applies to each of the other diodes D3 to D5~illustrated in other of the Figures 5 to 9.
; The unidirectional nature of the diodes serves to prevent flashback.
It is to be understood that Figures 4 to 6 are representative examples only and that the invention is in no way limited by these examples.
Turning to Figures 10 and 11, an additional embodiment of the invention is illustrated wherein the time delay device 16a in at least one of the electrodes 16 is selectively adjustable. Thus, as illustrated in the two drawings, four such time delay devices 16a representing at least two different delay periods are provided. These are mounted _ . ~
k :
~i. .
.
.
in a rotatable barrel 22 constructed of insulator material. Barrel 22 is rotatably mounted in a chamher 23 in the insulator 13 by means of spring-biased pin 24. The time delay devices 16a are also preEerably spring biased to ensure good contact.
,:, . . ~ .
Claims (23)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. An improved dual internal electric spark plug, comprising, in combination, an insulator, a casing around said insulator, means for attaching said casing for attachment to an engine cylinder head, and a pair of electrodes through said insulator, one protruding end of each said electrode being designed for connection to an electric wiring connector, and the opposite protruding end comprising a positive contact positioned in proximity to a corresponding substantially L-shaped anvil negative contact formed on said casing, and each of said electrodes being interrupted by a corresponding solid state H.V. time delay device.
2. A dual electric spark plug, comprising a cylindrical metal casing with a threaded barrel for insertion into an opening of an internal combustion engine, an integral cap nut, a pair of spaced apart electrodes secured within an insulator, secured in said cylindrical metal casing, a pair of solid state, time-delay devices secured in said insulator for time-delay firing of the spark plug between its electrode tips, and a pair of ground anvils, and shield means extending from said insulator, between said electrode tips and said ground anvils.
3. The combination according to claim 2, wherein said insulator is fixedly secured in said cylindrical metal casing, and said electrodes are fixedly secured in said insulator, and said solid state time-delay devices are, one each, connected electrically in series with said electrodes, and each electrode is fixedly secured in said insulator, above the cap nut of said cylindrical metal casing for maximum cooling thereof.
4. The combination according to claim 3, wherein said insulator at the top of the spark plug is terminated by a pair of projections which are spaced apart and integral of said insulator, and each of said pair of projections, houses the upper portion of one of said electrodes, and the bottom portion of said insulator includes said shield means, which comprises an extending and integral portion of said insulator, which is disposed between said electrode tips and said pair of ground anvils at the lower end of the spark plug.
5. A dual internal electric spark plug, comprising, in combination, a cylindrical, elongated insulator, a metal casing around a portion of said insulator, one end of said casing forming a threaded barrel for securement in a threaded opening of an internal combustion engine, and a pair of parallel, spaced apart electrodes extending axially through said insulator, said end of said casing having a pair of "L"
shaped anvils projecting therefrom, a tip of each of said electrodes projecting from a first end of said insulator to a point proximate a corresponding one of said anvils whereby to form an axially extending spark gap between said tip and said anvil, a flat shield formed across a center of said insulator first end and projecting axially between each pair of said anvils and tips, so as to separate said spark gaps from each other, said shield extending a distance that is larger than a length of said gaps between said anvils and said tips; opposite ends of each electrodes projecting from an opposite second end of said insulator being shaped for electrical connections, and a longitudinally intermediate portion of each of said electrodes having a solid state, time-delay device inserted therein.
shaped anvils projecting therefrom, a tip of each of said electrodes projecting from a first end of said insulator to a point proximate a corresponding one of said anvils whereby to form an axially extending spark gap between said tip and said anvil, a flat shield formed across a center of said insulator first end and projecting axially between each pair of said anvils and tips, so as to separate said spark gaps from each other, said shield extending a distance that is larger than a length of said gaps between said anvils and said tips; opposite ends of each electrodes projecting from an opposite second end of said insulator being shaped for electrical connections, and a longitudinally intermediate portion of each of said electrodes having a solid state, time-delay device inserted therein.
6. The combination as set forth in claim 5 wherein said solid state, time-delay devices of said two electrodes are the same in terms of delay.
7. The combination as set forth in claim 5 wherein said solid state, time-delay devices of said two electrodes are not the same in terms of delay.
CLAIMS SUPPORTED BY SUPPLEMENTARY DISCLOSURE
CLAIMS SUPPORTED BY SUPPLEMENTARY DISCLOSURE
8. A dual electric spark plug, comprising a cylindrical metal casing with a threaded barrel for insertion into an opening of an internal combustion engine, an integral cap nut, a pair of spaced apart electrodes secured within an insulator, secured in said cylindrical metal casing, a pair of solid state, time-delay devices secured in said insulator for time-delay firing of the spark plug between its electrode tips, and a pair of ground anvils, and shield means extending from said insulator, between said electrode tips and said ground anvils;
and wherein said time-delay devices are both diodes or both semiconductors.
and wherein said time-delay devices are both diodes or both semiconductors.
9. The combination according to claim 8, wherein said insulator is fixedly secured in said cylindrical metal casing, and said electrodes are fixedly secured in said insulator, and said solid state time-delay devices are, one each, connected electrically in series with said electrodes, and each electrode is fixedly secured in said insulator, above the cap nut of said cylindrical metal casing for maximum cooling thereof.
10. The combination according to claim 9, wherein said insulator at the top of the spark plug is terminated by a pair of projections which are spaced apart and integral of said insulator, and each of said pair of projections, houses the upper portion of one of said electrodes, and the bottom portion of said insulator includes said shield means, which comprises an extending and integral portion of said insulator, which is disposed between said electrode tips and said pair of ground anvils at the lower end of the spark plug.
11. The spark plug of claim 8 wherein each said time-delay device comprises at least one diode.
12. A dual internal electric spark plug, comprising, in combination, a cylindrical, elongated insulator, a metal casing around a portion of said insulator, one end of said casing forming a threaded barrel for securement in a threaded opening of an internal combustion engine, and a pair of parallel, spaced apart electrodes extending axially through said insulator, said end of said casing having a pair of "L"
shaped anvils projecting therefrom, a tip of each of said electrodes projecting from a first end of said insulator and being axially spaced from each of said anvils so as to form an axially extending spark gap therebetween, a flat shield formed across a center of said insulator first end and projecting axially between each pair of said anvils and tips, so as to separate said spark gaps from each other, said shield extending a distance that is larger than a length of said gaps between said anvils and said tips; opposite ends of each electrodes projecting from an opposite second end of said insulator being shaped for electrical connections, and a longitudinally intermediate portion of each of said electrodes having a solid state, time-delay device inserted therein, said time-delay devices being both diodes or both semi-conductors.
shaped anvils projecting therefrom, a tip of each of said electrodes projecting from a first end of said insulator and being axially spaced from each of said anvils so as to form an axially extending spark gap therebetween, a flat shield formed across a center of said insulator first end and projecting axially between each pair of said anvils and tips, so as to separate said spark gaps from each other, said shield extending a distance that is larger than a length of said gaps between said anvils and said tips; opposite ends of each electrodes projecting from an opposite second end of said insulator being shaped for electrical connections, and a longitudinally intermediate portion of each of said electrodes having a solid state, time-delay device inserted therein, said time-delay devices being both diodes or both semi-conductors.
13. The combination as set forth in claim 12 wherein said solid state, time-delay devices of said two electrodes are the same in terms of delay.
14. The combination as set forth in claim 12 wherein said solid state, time-delay devices of said two electrodes are not the same in terms of delay.
15. The spark plug of claim 12, wherein each said time-delay device comprises at least one diode.
16. The combination as set forth in claim 1, wherein each said time-delay device comprises a plurality thereof, selectively aligned between opposite ends of said electrodes.
17. The combination as set forth in claim 2, wherein said time-delay devices are of different delay intervals.
18. The combination as set forth in claim 3, wherein said delay devices comprise a plurality of diodes arranged for either a negative or a positive system.
19. The combination as set forth in claim 4, wherein said diodes are arranged alike, so as to prevent a flash back across said electrodes.
20. The spark plug of claims 11 and 15 wherein each said time-delay device comprises a plurality of diodes.
21. The spark plug of claims 11 and 15 wherein each said diode is arranged to conduct in the same direction.
22. The spark plug of claims 11 and 15 wherein each said time-delay device comprises a plurality of diodes and each said diode is arranged to conduct in the same direction.
23. An improved dual internal electric spark plug, comprising, in combination, an insulator, a easing around said insulator, means for attaching said easing to an engine cylinder head, and a pair of electrodes through said insulator, one protruding end of said electrodes being designed for connection to electric wiring connectors, and opposite protruding ends comprising positive contacts respective to substantially "L"-shaped anvil negative contacts formed on said casing, and each of said electrodes being interrupted by solid state H.V. time delay devices; a plurality of said time delay devices being circularly arranged and extending axially in a rotatable barrel inside said insulator, so that said time delay devices are selectively aligned between adjacent ends of each said electrode for preferred use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000306316A CA1122087A (en) | 1978-06-27 | 1978-06-27 | Dual internal electric spark plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000306316A CA1122087A (en) | 1978-06-27 | 1978-06-27 | Dual internal electric spark plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1122087A true CA1122087A (en) | 1982-04-20 |
Family
ID=4111786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000306316A Expired CA1122087A (en) | 1978-06-27 | 1978-06-27 | Dual internal electric spark plug |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1122087A (en) |
-
1978
- 1978-06-27 CA CA000306316A patent/CA1122087A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4715337A (en) | Engine ignition system with an insulated and extendable extender | |
| US6374816B1 (en) | Apparatus and method for combustion initiation | |
| US4308487A (en) | Dual internal electric spark plug | |
| US6329743B1 (en) | Current peaking sparkplug | |
| CA1037804A (en) | Multiple air gap spark plug having resistive electrode coupling | |
| ES8701358A1 (en) | Glow plug. | |
| US2957099A (en) | Spark plugs | |
| US6807933B2 (en) | Multiple sparking ignition device | |
| US4324219A (en) | Spark intensifier in gasoline engine | |
| CA2172585A1 (en) | Automotive Ignition Coil Assembly | |
| CA1122087A (en) | Dual internal electric spark plug | |
| US5633557A (en) | Anti-fouling spark plug | |
| WO2004107501A3 (en) | Arrester disconnector assembly having a capacitor and a resistor | |
| GB2085521A (en) | Spark plugs | |
| US3577170A (en) | Double-gap spark plug | |
| US20090096345A1 (en) | Uniquely designed internal combustion engine spark plug that will produce two independent ignition sparks between the spark plug electrodes for each single electrical ignition coil discharge | |
| CN219086461U (en) | Spark plug with small resistance | |
| CN101728769B (en) | Spark plug | |
| CN214673455U (en) | Firework cap of nail gun | |
| JPH06203943A (en) | Connection of ignition device | |
| US889338A (en) | Igniter. | |
| SU985872A2 (en) | High voltage wire lug for internal combustion engine spark plug | |
| US4008944A (en) | Glow plug connector | |
| SU1615830A1 (en) | Spark plug | |
| CN206195155U (en) | Cup formula spark plug and ignition system and car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 19990420 |