CN203119293U - Spark plug and fire guide unit - Google Patents
Spark plug and fire guide unit Download PDFInfo
- Publication number
- CN203119293U CN203119293U CN 201320071832 CN201320071832U CN203119293U CN 203119293 U CN203119293 U CN 203119293U CN 201320071832 CN201320071832 CN 201320071832 CN 201320071832 U CN201320071832 U CN 201320071832U CN 203119293 U CN203119293 U CN 203119293U
- Authority
- CN
- China
- Prior art keywords
- main part
- igniting
- spark plug
- port
- central 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Spark Plugs (AREA)
Abstract
A spark plug comprises a central electrode, an insulator, a shell and a fire guide unit, wherein the insulator is provided with an axle hole extending along an axial direction, the central electrode is inserted into the axle hole penetrating through the insulator, the end part of the central electrode is exposed, and the shell is arranged at the periphery of the insulator. The fire guide unit includes a connecting part, a body part and a fire ejection part, wherein the body part is axially opposite to the central electrode and is connected with the shell through the connecting part, the body part is provided with a fire guide channel penetrating through the upper and lower surfaces of the body part, an upper port and a lower port of the fire ejection part are communicated, the upper port of the fire ejection part is connected with a port of the lower bottom surface of the body part, and at least one through hole is arranged around the lower port of the fire ejection part. The spark plug and the fire guide unit thereof, provided by the utility model, are provided with the fire guide channel and have excellent performances of high ignition efficiency and concentrated fire power.
Description
Technical field
The utility model relates to a kind of spark plug that uses and leads fiery unit in internal combustion engine.
Background technology
Spark plug is to be installed on the internal combustion engine (engine), is used for the sparking of the mist in the combustion chamber.See also Fig. 1, it is the structural representation of spark plug 10 in the prior art.This spark plug 10 comprises a central electrode 12, insulator 14, housing 16 and grounding electrode 18.This insulator 14 is ceramics insulator, has the axis hole that extends along axis direction, and this central electrode 12 inserts the axis hole that runs through this insulator 14.This housing 16 is arranged on the periphery of this insulator 14.This grounding electrode 18 is connected with the end of this housing 16, and crooked extension is relative with central electrode 12, and forms the gap of sparkover between the central electrode 12.Effect by pulse electric power between this central electrode 12 and the grounding electrode 18 produces electric arc, and then produces electric spark and light mist around the electrode, reaches the purpose of igniting.
Because in the prior art, this grounding electrode 18 is for having the solid plate body of certain width.After this grounding electrode 18 is lighted a fire with central electrode 12, mist around igniting makes spark discharge to diffusion all around, and is not that concentrate firepower enters the combustion chamber along direction B, makes its firepower that enters the combustion chamber that delay be arranged on the time, and the intensity of fire that enters the combustion chamber weakens, and influences its ignition effectiveness.Further, because the compression stroke of internal combustion engine operation and the time of expansion stroke are the set time, at the piston of internal combustion engine during near top dead centre, spark plug sends electric spark, light compressed combustion mixture, burning mixture is in the time of expansion stroke internal combustion and discharge heat energy, promotes piston and is moved to lower dead center by top dead centre.Therefore, the intensity that spark plug sends the delay of lighting firepower and firepower a little less than, making the interior combustion mixture of internal combustion engine can not get abundant burning in fixing stroke just is discharged from, influence the combustion efficiency of internal combustion engine, and then in the waste gas of make discharging unburned gas is more completely, influence the environment protecting of energy-saving and emission-reduction.
The utility model content
The shortcoming that the purpose of this utility model is to overcome prior art provides a kind of ignition effectiveness height and firepower concentrated spark plug with not enough.
The utility model is achieved through the following technical solutions: a kind of spark plug, it comprises a central electrode, insulator, housing and leads fiery unit, this insulator has the axis hole that extends along axis direction, this central electrode inserts and runs through the axis hole of this insulator and expose the end, and this housing is arranged on the periphery of this insulator.This is led fiery unit and comprises connecting portion, main part and the portion that fires, this main part is axially relative with central electrode, and be connected with housing by connecting portion, this main part has a passage of igniting that runs through bottom surface on it, the upper port of this portion that fires and lower port connect, its upper port is connected with the port of the bottom surface of main part, has at least a through hole to be arranged on this subordinate's port periphery that fires.
Further, the bore of the port of bottom surface up and down of this main part is different; Perhaps this passage of igniting comprises igniting chamber, accelerating cavity and inlet chamber in regular turn, and this igniting chamber and inlet chamber comprise wide mouth end and slot end respectively, and this accelerating cavity is circular cylindrical cavity, and the slot end of this igniting chamber and inlet chamber is connected with the two ends of accelerating cavity respectively.
Further, this main part also comprises the discharge terminal that is arranged in the passage of igniting or is arranged on the port top of main part upper bottom surface, protrude to this central electrode direction on this discharge terminal surface from this main part towards this central electrode, with the end axis of this central electrode to over against, and be fixed on the main part by connecting bridge.
Further, this connecting portion and housing of leading fiery unit spins by screw thread; Perhaps this is led fiery unit and comprises one or more connecting portions, and this main part is fixedlyed connected with housing by one or more connecting portions.
Further, have spiral helicine groove or protuberance on the inwall of this passage of igniting.
And this portion of firing also comprises at least two helical blades, and this helical blade is fixedlyed connected with the medial surface of this portion that fires respectively, and connects in the center of this portion that fires; Perhaps the medial surface of this portion that fires is provided with helical form and leads fiery fin or lead fiery groove.
In addition, the utility model also provides leading of a kind of spark plug fiery unit, it comprises connecting portion, main part and the portion that fires, this main part is axially relative with the central electrode of spark plug, and be connected with the housing of spark plug by connecting portion, this main part has a passage of igniting that runs through bottom surface on it, and the upper port of this portion that fires and lower port connect, its upper port is connected with the port of the bottom surface of main part, has at least a through hole to be arranged on this subordinate's port periphery that fires.
With respect to prior art, the spark plug that the utility model provides and lead fiery unit and be provided with main part and the portion that fires, has the high and concentrated excellent properties of firepower of ignition effectiveness, increased the burning time of fuel in internal combustion engine relatively, and fuel is burnt in internal combustion engine more fully, reach the effect of energy-saving, emission-reducing, environment friendly.
Description of drawings
Fig. 1 is the structural representation of spark plug in the prior art.
Fig. 2 is the structural representation of the utility model spark plug.
Fig. 3 is the cross-sectional view of leading fiery unit of the spark plug of the utility model embodiment 1.
Fig. 4 is the schematic perspective view of the portion that fires shown in Figure 3.
Fig. 5 is the cross-sectional view of leading fiery unit of the spark plug of the utility model embodiment 2.
Fig. 6 is the cross-sectional view of leading fiery unit of the spark plug of the utility model embodiment 3.
Fig. 7 is the perspective view of the portion that fires that leads fiery unit of the spark plug of the utility model embodiment 4.
Embodiment
Embodiment 1
See also Fig. 2, it is the structural representation of the utility model spark plug 100.This spark plug 100 comprises a central electrode 120, insulator 140, housing 160 and leads fiery unit 180.This insulator 140 is ceramics insulator, has the axis hole that extends along axis direction, and this central electrode 120 inserts and runs through the axis hole of this insulator 140 and expose point.This housing 160 is arranged on the periphery of this insulator 140.This is led fiery unit 180 and is connected with the end of this housing 160, and relative with the point of central electrode 120.
Please consult Fig. 3 simultaneously, it is the cross-sectional view of leading fiery unit 180 of the spark plug 100 of the utility model embodiment 1.This is led fiery unit 180 and is " L " type structure, it comprise the connecting portion 182 that connects with housing 160 with is connected with connecting portion 182 and with central electrode 12 axial relative main parts 184, and the portion that fires 188 that is connected with main part 184 bottom surfaces.This main part 184 has a passage 186 of igniting that runs through bottom surface on it, and this passage 186 of igniting comprises igniting chamber 186a, accelerating cavity 186b and inlet chamber 186c.Wherein, the two-port bore of this igniting chamber 186a and inlet chamber 186c is different, and in the present embodiment, this igniting chamber 186a is a horn-like cavity, and this accelerating cavity 186b is a circular cylindrical cavity, and this inlet chamber 186c is a horn-like cavity.The slot end of this igniting chamber 186a and inlet chamber 186c is connected with the two ends of accelerating cavity 186b respectively, and the aperture of the slot end of namely should light a fire chamber 186a and inlet chamber 186c is consistent with the aperture of this accelerating cavity 186b.In the present embodiment, the aperture of this accelerating cavity 186b is 1.5mm, and the aperture of the wide mouth end of this igniting chamber 186a and inlet chamber 186c is 2mm.And the thickness between the last bottom surface of this main part 184 is 2mm.The wide mouth end edge of this igniting chamber 186a is as discharge between grounding electrode and this central electrode 120.
Please consult Fig. 4 simultaneously, it is the schematic perspective view of the portion 188 that fires shown in Figure 3.The upper port of this portion 188 that fires and lower port connect, and its upper port is connected with the wide mouth end of the inlet chamber 186c of main part 184, and in the present embodiment, the upper port of this portion 188 that fires is consistent with the bore of the wide mouth end of the inlet chamber 186c of main part 184.At least one through hole 189 is arranged on the lower port periphery of this portion that fires.In the present embodiment, the bore of the upper port of this portion 188 that fires is greater than the bore of lower port, and a plurality of through holes 189 are arranged on the lower port periphery of this portion 188 that fires equally spacedly.
When pulse firing, the central electrode of this spark plug 100 120 and lead fiery unit 180 around be full of mist, the mist between the wide mouth end edge of this central electrode 120 and igniting chamber 186a around the discharge ignitor.The gas that ignites at first expands rapidly in igniting chamber 186a, and the pressure in the 186a of this igniting chamber increases rapidly, promotes spark and discharges to inlet chamber 186c direction.When spark process accelerating cavity 186b, because narrow rapidly in the aperture of accelerating cavity 186b, the flow velocity during this accelerating cavity of spark air-flow process 186b increases, thereby spark is burst out more fast, thereby efficiently spark is guided in the combustion chamber of internal combustion engine.The 188 pairs of sparks of portion that fire further carry out drainage and water conservancy diversion, and the spark air-flow is concentrated to the combustion chamber eruption, have avoided firepower to diffusion all around, and the firepower of concentrating can improve the combustion efficiency of internal combustion engine to a certain extent, is conducive to energy-conserving and environment-protective.
Further, the through hole 189 of these portion's 188 lower port peripheries that fire can further improve the interior air-flow exchange of cavity of spark plug 100, especially in induction stroke stage of compression stroke, this through hole 189 can promptly import the fuel gas of spark plug circumferential perimeter in the cavity of spark plug, to increase the concentration of fuel gas in the cavity.And when the induction stroke of internal combustion engine, the pressure in the inlet chamber 186c is greater than the pressure in the igniting chamber 186a, and mist enters igniting chamber 186a from inlet chamber 186c.When mist process accelerating cavity 186b, because narrow rapidly in the aperture of accelerating cavity 186b, flow velocity during this accelerating cavity of airflow of mixed gas process 186b increases, mist more promptly is full of igniting chamber 186a, thereby efficiently the combustion chamber of mist by internal combustion engine is guided in the igniting chamber 186a.
Further, by prior art as can be known, the compression stroke of internal combustion engine operation and the time of expansion stroke are the set time, at the piston of internal combustion engine during near top dead centre, spark plug sends electric spark, light compressed combustion mixture, burning mixture is in the time of expansion stroke internal combustion and discharge heat energy, promotes piston and is moved to lower dead center by top dead centre.Therefore, flow velocity increases when being lighted gas through accelerating cavity 186b in the 186a of the igniting chamber of housing, make spark arrive the combustion chamber with the speed of more accelerating, shortened the time of kindling material arrival combustion chamber, overcome the defective that increases because of the distance that causes spark to enter the combustion chamber in the cavity that central electrode and grounding electrode is arranged on housing, increased the burning time of the combustion mixture in the combustion chamber in expansion stroke relatively, fuel is burnt in internal combustion engine more fully, reach the effect of energy-saving and emission-reduction.
Embodiment 2
See also Fig. 5, it is the cross-sectional view of leading fiery unit of the spark plug of the utility model embodiment 2.The spark plug of itself and embodiment 1 to lead fiery unit 180 structures roughly the same, difference only is: main part 284 also comprises a discharge terminal 281, this discharge terminal 281 is arranged in the space of this igniting chamber 286a or is arranged on the center of the top of this igniting chamber 286a, and protrude to these central electrode 12 directions on the surface from this main part 284 towards this central electrode 12, with the end axis of this central electrode 12 to over against, and connect bridge 283 by one and be fixed on the main part 284.This connects bridge 283 is straight connection bridge.This connection bridge 283 does not protrude from this main part 284 and maintains an equal level towards the surface of this central electrode 12 or with it.
Compare with embodiment 1, when pulse firing, this is led between discharge terminal 281 on the fiery unit and this central electrode 120 and carries out point discharge, makes the easier breakdown and generation spark that ignites of mist around the grounding electrode, the diffusion around this discharge terminal 281 of spark moment.Because point on every side around igniting passage 186 centered by this discharge terminal 281, the spark of diffusion is rapidly by spraying to passage 186 directions of igniting in the guiding set of the passage 186 of igniting around this discharge terminal 281, thereby concentrate efficiently with the shortest the fastest approach the spark guiding discharged in the combustion chamber of internal combustion engine.
Embodiment 3
See also Fig. 6, it is the cross-sectional view of leading fiery unit 380 of the spark plug of the utility model embodiment 3.The spark plug of itself and embodiment 1 to lead fiery unit 180 structures roughly the same, difference only is: main part 384 has a passage 386 of igniting that runs through bottom surface on it, the bore of the upper and lower port of this passage 386 of igniting is different, and namely the bore of the port of bottom surface up and down of this main part 384 is different.In the present embodiment, the bore of the bottom surface port of this main part 384 is greater than the bore of upper bottom surface port, and this passage 386 of igniting is the structure of Rotary-table.This connecting portion 382 of leading fiery unit is connected with the upper bottom surface port of this main part 384, and spins by screw thread with the housing 160 of spark plug.
Further, further improvement as present embodiment 3, main part 384 also comprises a discharge terminal, this discharge terminal is arranged in the space of this passage 386 of igniting or is arranged on the center of the upper bottom surface top of this main part 384, and protrude to these central electrode 12 directions on the surface from this main part 284 towards this central electrode 12, with the end axis of this central electrode 12 to over against, and connect bridge by one and be fixed on the main part 284.This connects the connection bridge of bridge bending.This connection bridge does not protrude from this main part 384 and maintains an equal level towards the surface of this central electrode 12 or with it.
Embodiment 4
Please consult Fig. 7 simultaneously, the perspective view of the portion that fires 488 that leads fiery unit of the spark plug of the utility model embodiment 4.This portion 488 that fires is provided with through hole 489 and helical blade 485.The upper port of this portion 488 that fires and lower port connect.A plurality of through holes 489 are arranged on the lower port periphery in the portion of firing 488 equally spacedly.Comprise the helical blade 485 that three mutual isogonisms arrange in the present embodiment, its center in this portion 488 that fires connects, and fixedlys connected with this medial surface that fires portion 488 respectively.The upper port of this portion 488 that fires is connected with the bottom surface port of this main part, and dwindles collar extension gradually along the lower port direction.
Further, the utility model can also be done the various deformation structure, as: this leads (1) fiery unit and comprises a plurality of connecting portions, and this main part is connected with the end of housing by a plurality of connecting portions; (2) end face of the wide mouth end of the igniting chamber of this main part and/or inlet chamber is circle, triangle, rectangle or arbitrary polygon; (3) the connection bridge of main part can also be the connection bridge of bending, can comprise a plurality of connection bridges, and the chamber of should lighting a fire is divided at least three holes; (4) medial surface of this portion that fires is provided with helical form and leads fiery fin or lead fiery groove to replace helical blade; (5) have spiral helicine groove or protuberance on the inwall of this passage of igniting, when the spark air-flow of the passage of igniting discharges to the combustion chamber, form eddy airstream with guiding, with the efficient of further raising spark release.In addition, the feature of each embodiment of the present utility model, as lead connecting portion, the main part of fiery unit, each feature and the distortion thereof of the portion that fires, but mutual alternative, all in protection range of the present utility model.
The utility model is not limited to above-mentioned execution mode, if various changes of the present utility model or distortion are not broken away from spirit and scope of the present utility model, if these changes and distortion belong within claim of the present utility model and the equivalent technologies scope, then the utility model also is intended to comprise these changes and distortion.
Claims (10)
1. spark plug, it comprises a central electrode, insulator, housing and lead fiery unit, this insulator has the axis hole that extends along axis direction, this central electrode inserts and runs through the axis hole of this insulator and expose the end, this housing is arranged on the periphery of this insulator, it is characterized in that: this is led fiery unit and comprises connecting portion, main part and the portion that fires, this main part is axially relative with central electrode, and be connected with housing by connecting portion, this main part has a passage of igniting that runs through bottom surface on it, the upper port of this portion that fires and lower port connect, and its upper port is connected with the port of the bottom surface of main part, has at least a through hole to be arranged on this subordinate's port periphery that fires.
2. spark plug according to claim 1, it is characterized in that: the bore of the port of bottom surface up and down of this main part is different; Perhaps this passage of igniting comprises igniting chamber, accelerating cavity and inlet chamber in regular turn, and this igniting chamber and inlet chamber comprise wide mouth end and slot end respectively, and this accelerating cavity is circular cylindrical cavity, and the slot end of this igniting chamber and inlet chamber is connected with the two ends of accelerating cavity respectively.
3. spark plug according to claim 2, it is characterized in that: this main part also comprises the discharge terminal that is arranged in the passage of igniting or is arranged on the port top of main part upper bottom surface, protrude to this central electrode direction on this discharge terminal surface from this main part towards this central electrode, with the end axis of this central electrode to over against, and be fixed on the main part by connecting bridge.
4. spark plug according to claim 2 is characterized in that: the end face of the igniting chamber of this main part and/or the wide mouth end of inlet chamber is circle, triangle, rectangle or arbitrary polygon.
5. spark plug according to claim 2, it is characterized in that: this connecting portion and housing of leading fiery unit spins by screw thread; Perhaps this is led fiery unit and comprises one or more connecting portions, and this main part is fixedlyed connected with housing by one or more connecting portions.
6. according to any described spark plug in the claim 1 ~ 5, it is characterized in that: have spiral helicine groove or protuberance on the inwall of this passage of igniting.
7. according to any described spark plug in the claim 1 ~ 5, it is characterized in that: this portion of firing also comprises at least two helical blades, and this helical blade is fixedlyed connected with the medial surface of this portion that fires respectively, and connects in the center of this portion that fires; Perhaps the medial surface of this portion that fires is provided with helical form and leads fiery fin or lead fiery groove.
8. a spark plug leads fiery unit, it is characterized in that: comprise connecting portion, main part and the portion that fires, this main part is axially relative with the central electrode of spark plug, and be connected with the housing of spark plug by connecting portion, this main part has a passage of igniting that runs through bottom surface on it, the upper port of this portion that fires and lower port connect, and its upper port is connected with the port of the bottom surface of main part, has at least a through hole to be arranged on this subordinate's port periphery that fires.
Spark plug according to claim 7 lead fiery unit, it is characterized in that: the bore of the port of bottom surface up and down of this passage of igniting is different; Perhaps this passage of igniting comprises igniting chamber, accelerating cavity and inlet chamber in regular turn, and this igniting chamber and inlet chamber are horn-like cavity, and this accelerating cavity is circular cylindrical cavity, and the slot end of this igniting chamber and inlet chamber is connected with the two ends of accelerating cavity respectively.
10. spark plug according to claim 8 leads fiery unit, it is characterized in that: this main part also comprises the discharge terminal that is arranged in the passage of igniting or is arranged on main part upper bottom surface port top, protrude to this central electrode direction on this discharge terminal surface from this main part towards this central electrode, with the end axis of this central electrode to over against, and be fixed on the main part by connecting bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320071832 CN203119293U (en) | 2013-02-07 | 2013-02-07 | Spark plug and fire guide unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320071832 CN203119293U (en) | 2013-02-07 | 2013-02-07 | Spark plug and fire guide unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203119293U true CN203119293U (en) | 2013-08-07 |
Family
ID=48899611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320071832 Expired - Fee Related CN203119293U (en) | 2013-02-07 | 2013-02-07 | Spark plug and fire guide unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203119293U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684709A (en) * | 2017-02-27 | 2017-05-17 | 李忠尧 | Sparking plug |
-
2013
- 2013-02-07 CN CN 201320071832 patent/CN203119293U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106684709A (en) * | 2017-02-27 | 2017-05-17 | 李忠尧 | Sparking plug |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103746291B (en) | A kind of spark plug | |
| CN202840241U (en) | Spark plug | |
| JP2018532225A (en) | Spark plug for internal combustion engine | |
| CN104426057B (en) | Spark plug, and ignition system of internal combustion engine using same | |
| CN104767123A (en) | Spark plug | |
| CN103779788B (en) | A kind of spark plug and use the ignition system of internal combustion engine of this spark plug | |
| CN103956654B (en) | A kind of spark plug | |
| CN203434440U (en) | Spark plug | |
| CN203218710U (en) | Efficient ignition spark plug | |
| CN204205284U (en) | A kind of spark plug | |
| CN204597221U (en) | A kind of spark plug | |
| CN203434439U (en) | Spark plug and spark-plug-using igniting system of internal combustion engine | |
| CN203826769U (en) | Spark plug | |
| CN203826770U (en) | Spark plug and igniting system of internal combustion engine using spark plug | |
| CN201937165U (en) | Bow-shaped multi-point dazzle fire side electrode spark plug | |
| CN203119293U (en) | Spark plug and fire guide unit | |
| CN203119292U (en) | Spark plug | |
| CN203119294U (en) | Spark plug and fire guide part thereof | |
| CN104421091B (en) | A kind of ignition system of internal combustion engine and spark plug are in the installation method of combustor | |
| CN104124612B (en) | Spark plug | |
| CN103259195B (en) | Spark plug capable of sparking efficiently | |
| CN102937051B (en) | Rotary flow type plasma ignition mouth | |
| CN106549307B (en) | A kind of spark plug | |
| CN202888613U (en) | Spark plug and grounding electrode thereof | |
| CN102623896A (en) | Spark plug |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20220207 |