CN2500004Y - Series capacitance type spark plug - Google Patents
Series capacitance type spark plug Download PDFInfo
- Publication number
- CN2500004Y CN2500004Y CN 01259575 CN01259575U CN2500004Y CN 2500004 Y CN2500004 Y CN 2500004Y CN 01259575 CN01259575 CN 01259575 CN 01259575 U CN01259575 U CN 01259575U CN 2500004 Y CN2500004 Y CN 2500004Y
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- China
- Prior art keywords
- electrode
- pedestal
- spark plug
- grounding electrode
- series capacitance
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Abstract
The utility invention relates to a serial capacitive spark plug, pertaining to the field of engine technology, designed for forming a relatively strong discharging spark. The utility model comprises a pedestal (1) for conducting electricity and heat, a ceramic insulator (2) fixedly arranged on the pedestal (1), a central electrode (3) connected with the power supply and presented as a cap covering the tube end of the ceramic insulator (2) and fixedly arranged, a grounding electrode (5) conductively connected with the pedestal (1) and fixedly arranged, and a ring-shaped middle electrode (4) located between the central electrode (3) and the grounding electrode (5) and embedded to cover the outer wall of the ceramic insulator (2), which is characterized in that a gap (52) is provided between the grounding electrode (5) and the ceramic insulator (2), closer to the central electrode (3) than the pedestal.
Description
The utility model belongs to technical field of internal combustion engines, relates to the spark plug with the mist in the discharge spark ignition engine cylinder.
Its structure of traditional spark plug comprises a central electrode that connects power electrode, and the lateral electrode of a ground connection is positioned at the central electrode top, and the both is packed on the ceramics insulator, and the gap of 0.6-0.9mm is arranged.When power supply formed high voltage (tens thousand of volt) between two electrodes, this gap was breakdown, forms discharge spark, lights the mist in the cylinder.It has cost low, and the advantage of reliable operation is so continue to use for a long time and use extensively.But its discharge spark is less, visually be exactly one from the point-like bright spot of negative pole to positive pole emission, be not enough to light and contain the lower mist of combustion gas ratio.And light low gaseous mixture and make it fully to burn at short notice is energy-conservation for a long time and target environmental protection, strengthens and prolongs discharge spark and will help to reach such requirement.
The purpose of this utility model provides a kind of series capacitance formula spark plug, and it can produce stronger discharge spark.
This purpose is achieved in that
A kind of series capacitance formula spark plug comprises that the pedestal of a conduction and heat conduction, pedestal have (in order to the normally screw thread that is connected to cylinder) jockey; A ceramics insulator that is installed in the tubulose of pedestal; A central electrode that is connected to power supply is the cap shape and covers pipe end at ceramics insulator, and (its shape is that the longitudinal section is the revolving body of " T " font, and its columnar portion stretches in the pipe of ceramics insulator) also installs; Grounding electrode with the pedestal conducting; The target of a ring-type between central electrode and grounding electrode, is nested in the outer wall of ceramics insulator; It is characterized in that: gapped between described grounding electrode and the ceramics insulator, nearer apart from target than pedestal; Grounding electrode is a ring electrode; Ceramics insulator is a taper type, has for the nested cannelure of target.
The structure of its central electrode of the utility model, target and grounding electrode can be regarded two electric capacity of series connection mutually as.Wherein the electric capacity that constitutes with central electrode and target is composite dielectric matter with mist and ceramics insulator, wherein the conductivity with ceramics insulator is stronger, when two interelectrode voltages raise, at first can form discharge spark in the outside wall surface of ceramics insulator; The electric capacity that constitutes with target and grounding electrode is because far away along the path of ceramics insulator discharge, and its discharge path is to puncture mist and connect between the two straight line, and forms (space) discharge spark along this straight line; Because this series capacitance has been laid in more energy before discharge, simultaneously, as " bridge ", target has lowered the voltage that requires of keeping discharge, and just makes that its discharge spark is stronger, perhaps continue (or interruption) the long time again for for several times.Sum up, the utility model can form stronger discharge spark, and its time that forms discharge spark is longer.
Introduce embodiment of the present utility model below in conjunction with accompanying drawing:
Fig. 1 is the structural representation of the utility model ignition part.
As shown in the figure, the utility model series capacitance formula spark plug comprises the pedestal 1 of a conduction and heat conduction having screw thread 12 (in order to be connected to cylinder) on the pedestal 1; A ceramics insulator 2 that is installed in the tubulose of pedestal 1; A central electrode 3 that is connected to power supply is the cap shape and covers pipe end at ceramics insulator 2, and installs; One with pedestal 1 conducting and the grounding electrode 5 that installs; The target 4 of a ring-type between central electrode 3 and grounding electrode 5, is nested in the outer wall of ceramics insulator 2; It is characterized in that: gapped 52 between described grounding electrode 5 and the ceramics insulator 2, nearer apart from target 3 than pedestal.
As shown in the figure, grounding electrode 5 is ring electrodes; It with base 1 between be connected with several ribs, this has bigger thermal resistance than whole ways of connecting, to keep the burn-off temperature of grounding electrode 5, avoids carbon distribution.
Ceramics insulator 1 is a taper type, has for the nested cannelure of target 4.
The pipe end quilt cover of ceramics insulator 1 overlays under the cap body of central electrode 3.Such structure can avoid the outer rim of this pipe end to be ablated by discharge spark.
Target 4 closes on the position slyness of central electrode 3.This is to form the space discharge between this two electrode for being avoided.
Do as a wholely, central electrode 3 its shapes are that the longitudinal section is the revolving body of " T " font, and its columnar portion stretches in the pipe of ceramics insulator.But just understand, can be only the cap portion of this body be interpreted as central electrode 4, and its columnar portion is interpreted as in order to electrode is communicated to the electric conductor of power supply the effect of mechanical connection is also arranged simultaneously.
On specific design, be slightly less than spatial joint clearance between target 4 and the grounding electrode 5 along the face gap between central electrode 3 and the target 4.Test shows that its effect is better.
Claims (5)
1. series capacitance formula spark plug comprises the pedestal (1) of a conduction and heat conduction, and pedestal has jockey on (1); A ceramics insulator (2) that is installed in pedestal (1); A central electrode (3) that is connected to power supply is the cap shape and covers pipe end in ceramics insulator (2), and installs; One with pedestal (1) conducting and the grounding electrode (5) that installs; The target of a ring-type (4) between central electrode (3) and grounding electrode (5), is nested in the outer wall of ceramics insulator (2); It is characterized in that: gapped between described grounding electrode (5) and the ceramics insulator (2), nearer apart from target (3) than pedestal.
2. series capacitance formula spark plug according to claim 1 is characterized in that: grounding electrode (5) is a ring electrode.
3. series capacitance formula spark plug according to claim 2 is characterized in that; Be connected with several ribs between grounding electrode (5) and the base (1).
4. series capacitance formula spark plug according to claim 1 is characterized in that: ceramics insulator (1) is a taper type, and its pipe end quilt cover overlays under the cap body of central electrode (3).
5. series capacitance formula spark plug according to claim 1 is characterized in that: be slightly less than spatial joint clearance between target (4) and the grounding electrode (5) along the face gap between central electrode (3) and the target (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01259575 CN2500004Y (en) | 2001-08-27 | 2001-08-27 | Series capacitance type spark plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01259575 CN2500004Y (en) | 2001-08-27 | 2001-08-27 | Series capacitance type spark plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2500004Y true CN2500004Y (en) | 2002-07-10 |
Family
ID=33667916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01259575 Expired - Fee Related CN2500004Y (en) | 2001-08-27 | 2001-08-27 | Series capacitance type spark plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2500004Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259194A (en) * | 2012-02-17 | 2013-08-21 | Fram集团Ip有限公司 | Fouling resistant spark plug |
-
2001
- 2001-08-27 CN CN 01259575 patent/CN2500004Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259194A (en) * | 2012-02-17 | 2013-08-21 | Fram集团Ip有限公司 | Fouling resistant spark plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |