CN105633800A - Spark plug - Google Patents
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- CN105633800A CN105633800A CN201410609210.0A CN201410609210A CN105633800A CN 105633800 A CN105633800 A CN 105633800A CN 201410609210 A CN201410609210 A CN 201410609210A CN 105633800 A CN105633800 A CN 105633800A
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Abstract
The invention relates to a spark plug. The spark plug comprises an insulator which has an axial hole extending in the axis direction; a central electrode, wherein the central electrode is inserted into the axial hole penetrating through the insulator, and the end part of the central electrode is exposed; a housing which is in a hollow column shape and sleeves the surface of the insulator; a flow guiding inserting piece, wherein a flow guiding channel is formed in the flow guiding inserting piece, the front end of the flow guiding channel right faces the end part of the central electrode, the rear end is arranged on an open end of the housing, the size of the section of the flow guiding channel is gradually reduced from front and back two ends to the middle part until a narrow throat is formed on the middle part, the outer wall of the flow guiding inserting piece and the inner wall of the housing are separated to form an annular space, and the flow guiding channel is communicated with the annular space; and a grounding electrode, wherein the grounding electrode is arranged on the inner wall of the housing or the flow guiding inserting piece, and an ignition end part with a spark discharging gap is formed between the grounding electrode and the end part of the central electrode. Compared with the prior art, the spark plug provided by the invention can effectively avoid a surge phenomenon of a pressurized injection type spark plug.
Description
Technical field
The present invention relates to the igniting field of a kind of internal combustion engine, especially relate to a kind of spark plug.
Background technology
Internal combustion engine is after liquid or gaseous fuel being mixed with air, and the high compression combustion chamber burning outburst directly inputting cylinder internal produces power. It it is a kind of heat engine converting heat into mechanical energy. Spark plug is mounted on internal combustion engine, for the sparking of the mixing gas in combustor.
Referring to Fig. 1, it is the structural representation of spark plug 10 in prior art. This spark plug 10 includes a central electrode 11, insulator 12, housing 13 and ground electrode 14. This insulator 12 is ceramics insulator, has the axis hole extended in the axial direction, and this central electrode 11 is inserted through the axis hole of this insulator 12. This housing 13 is arranged on the periphery of this insulator 12. This ground electrode 14 is connected with the end of this housing 13, and bending extension is relative with central electrode 11, and forms the gap of spark discharge between central electrode 11. Produce electric arc and then the mixing gas of generation spark ignition surrounding them by the effect of pulse power between this central electrode 11 and ground electrode 14, reach the purpose of automatic ignition.
Owing to the working environment of spark plug is exceedingly odious, this central electrode 11 and ground electrode 14 need igniting many times in combustor under high-temperature and high-pressure conditions, and there will be deposit on this electrode and cause that it corrodes, and cause being worse off of spark plug. In order to slow down the speed of worsening of spark plug, prior art provides a kind of ignition effectiveness high and anticorrosive spark plug.
Referring to Fig. 2, it is the structural representation of prior art spark plug 20. This spark plug 20 includes insulator 21, central electrode 22, housing 23 and ground electrode 24. This insulator 21 its there is the axis hole extended in the axial direction. This central electrode 22 is inserted through axis hole the exposed end of this insulator 21. This housing 23 sequentially includes running through the igniting chamber 231 of its upper and lower side, accelerated passage 232 and inlet chamber 233, the aperture of this accelerated passage 232 is less than the aperture in this igniting chamber 231 and inlet chamber 233, and this housing 23 is set in this insulator 21 surface and makes the end of central electrode 22 be positioned at this igniting chamber 231. This ground electrode 24 is arranged on igniting chamber 231 inwall of this housing 23.
But, it it is series connection UNICOM between each cavity of this spark plug 20, and be single UNICOM between each space, also it is UNICOM single with the cavity in shell of spark plug body towards the spout in cylinder, the combustor being namely communicated in outside in housing only has single air inlet or gas outlet.
And owing to the fuel of the igniting of spark plug is not be located at inside spark plug, and it is derived from the fuel in the cylinder body outside spark plug. Fuel, by piston compression, is advanced the ignition location of central electrode 22 by the fuel in cylinder body. After central electrode 22 igniting, fuel, by expanding, is pushed inlet chamber 233 in igniting chamber 231, is then sprayed in combustor. In same semi-enclosed pipeline, after the burning gases ejected, pressure meeting instantaneous reduction in this pipeline, when this pressure reduces to during less than in-cylinder pressure, air-flow will be led in the cavity of spark plug, the gas burnt and the gas not having burning burn away, and once more expand, again to cylinder injection in electrode chamber body. This situation can repeat to occur always, will form surge phenomenon, and pipeline space capacity is more big, and the surge of generation will be more strong, if the vibrations of this surge and electromotor form resonance, electromotor will cause very big injury.
Summary of the invention
It is an object of the invention to the shortcoming overcoming prior art with not enough, it is provided that the spark plug that a kind of calorific value can adjust as requested, efficiency of combustion is high.
The present invention is achieved by the following technical solutions: a kind of spark plug, including
Insulator, it has the axis hole extended in the axial direction;
Central electrode, its axis hole being inserted through this insulator exposed end;
Housing, it is hollow columnar, and this housing is set in this insulator surface;
Flow directing insert, has a flow-guiding channel inside it, the front proper centering heart electrode end of described flow-guiding channel, and rear end is positioned at the opening of housing; Being provided with a narrow larynx inside described flow-guiding channel, the area of described narrow larynx is less than the area of flow-guiding channel both ends open; Wherein,
The outer wall of described flow directing insert separates with inner walls, forms an annular space; Described flow-guiding channel connects with described annular space; Or,
The outer wall of described flow directing insert is provided with a plurality of groove of coherent rear and front end, and described every groove is respectively and with inner walls just to a plurality of pipeline of formation that combines, and one end of described pipeline is towards central electrode, and the other end is towards the opening of housing; Or,
Described inner walls opening extends to central electrode direction and is provided with a plurality of groove, described every groove respectively with flow directing insert outer wall just to a plurality of pipeline of formation that combines, one end of described pipeline is towards central electrode, and other end is to the opening of housing;
Ground electrode, it is arranged in inner walls or is arranged in flow directing insert, and and forms the firing end portion with spark-discharge gap between the end of central electrode.
Relative to prior art, the spark plug of the present invention can be prevented effectively from the surge phenomenon that the spark plug of boosting jet this first grade design of type occurs, improve the stability of boosting jet type spark plug air-flow igniting, strengthen and accelerate spark air-flow and enter the time of cylinder body, the power output allowing automobile engine is stablized, and torsion increases. By the air-flow igniting circulated, jet pipe utilizes the through hole at inwall that accelerates to air-flow to form pressure differential, by in the fuel supplement of the gas storage space outside wall to jet pipe, add the flow of injection, form one and continue efficient to cylinder fuel ignition results, make the fuel combustion in cylinder body more abundant, thus improve the efficiency of combustion of internal combustion engine, the discharge of vehicle exhaust more environmental protection.
As a further improvement on the present invention, described ground electrode is arranged on the inwall of housing, and described flow-guiding channel extends towards one end of central electrode to the inwall of housing; The aperture that described flow-guiding channel connects with annular space connects the aperture of one end less than flow-guiding channel with central electrode. By will the flow-guiding channel pipe of described flow directing insert extend towards the opening of central electrode to the inwall of housing, form a flow-guiding channel space expanded, thus ignition center electrode and ground electrode being arranged in flow-guiding channel. Thus the aperture that the aperture between the outer wall of described flow directing insert and inner walls is connected with central electrode less than this flow-guiding channel.
As a further improvement on the present invention, the cross-sectional sizes of described flow-guiding channel is successively decreased from rear and front end toward middle part, and forms described narrow larynx in the middle part of flow-guiding channel.
As a further improvement on the present invention, described flow-guiding channel is a cylindrical passageway, arranges pressuring baffle in described flow-guiding channel, and described pressuring baffle is provided with a through hole, the aperture of described through hole is gradually reduced along central electrode toward the direction of shell nozzle end, forms described narrow larynx.
As a further improvement on the present invention, described flow directing insert is connected with the inwall of housing by least two connecting rod.
As a further improvement on the present invention, described inner walls is provided with many places fin, is provided with space between adjacent two fins; Described flow directing insert one end relative with central electrode is arranged on above fin.
As a further improvement on the present invention, the narrowing region of described passage is provided with at least one side opening, and the area of described side opening is less than the cross-sectional area of the flow-guiding channel of side opening position. Due to when combustion gas is moved in flow-guiding channel, place is narrowed through flow-guiding channel, the flow velocity of air-flow in pipe can be further speeded up, in the pipe in flow velocity quickening region, static pressure can diminish, now form pressure reduction with the annular space outside flow-guiding channel, in order in fuel supplement to flow-guiding channel, by increasing side opening at narrow larynx place, supplementing of combustion gas will be facilitated rapidly. Meanwhile, the area of described side opening arranges the cross-sectional area of the flow-guiding channel at place less than side opening, it is prevented that the combustion gas in flow-guiding channel is discharged in a large number from side opening.
As a further improvement on the present invention, described flow directing insert is interconnected to form by two round platform cavitys; The slot end of described two round platform cavitys connects in opposite directions, forms a narrow larynx.
As a further improvement on the present invention, described flow directing insert is in turn connected to form by a cylindrical chamber, round platform cavity and a loudspeaker cavity; The Single port of described cylindrical chamber is relative with central electrode, and the other end is connected with the opening end of round platform cavity, and the slot end of described round platform cavity is connected with the slot end of loudspeaker cavity, forms a narrow larynx.
As a further improvement on the present invention, the outer wall of described cylindrical chamber is provided with corresponding groove with inner walls, forms breather line. By arranging groove on the outer wall of flow directing insert, thus forming breather line, facilitating among the space entering central electrode place of combustion gas, carrying out lighting of combustion gas.
As a further improvement on the present invention, the flow-guiding channel within described flow directing insert is provided with at least one baffle plate; Described baffle plate is provided with a through hole.
As preferably, the area of described baffle plate through hole accounts for the 20%-80% of baffle plate area. There is mutual relation owing to the size of through-hole aperture and the gross area of through hole account for the ratio of the cross section baffle plate area of whole jet pipe, the through hole namely arranged on baffle plate, aperture is more little, and the stream pressure that it sprays outward is more big. Therefore the aperture on baffle plate is less than the aperture of the narrow larynx of jet pipe, and so the gross area of through hole accounts for the outputting torsion that this ratio of the 0.2-0.8 of the jet pipe cross-sectional area of baffle position is most effective raising electromotor on baffle plate, the automobile manipulation when low speed can be effectively improved and experience.
Further, the aperture of the through hole of described baffle plate is gradually reduced along central electrode toward the direction of shell nozzle end.
As a further improvement on the present invention, the outer wall of described flow directing insert is provided with spaced fin, the spacing of the inwall of described fin and housing is gradually increased from central electrode toward the direction of combustor, thus realize combustion gas in annular space be sufficiently mixed and separation is dammed, allow fuel gas flow dynamic pressure in region change.
As a further improvement on the present invention, described ground electrode is annular, pentagonal or triangle.
As a further improvement on the present invention, the inwall of the front-end and back-end of described flow-guiding channel is provided with spiral helicine groove or fin. By increasing spiral helicine groove or fin, it is possible to possess vortex impulse force after causing air flow through, strengthen jeting effect.
Below in conjunction with Figure of description, the spark plug of the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of spark plug of the prior art.
Fig. 2 is the structural representation of another kind of spark plug in prior art.
Fig. 3 is embodiment 1 structural representation of the spark plug of the present invention.
Fig. 4 is the connection diagram of the central electrode of the present embodiment spark plug.
Fig. 5 is the schematic diagram of the baffle plate of the present embodiment.
Fig. 6 is the deformation schematic diagram of the another kind of baffle plate of the present embodiment.
Fig. 7 is the structural representation of the first deformation of flow directing insert.
Fig. 8 is the structural representation of the second deformation of flow directing insert.
Fig. 9 is the flow-guiding channel structural representation of the embodiment 2 of the spark plug of the present invention.
Figure 10 is the structural representation of the flow-guiding channel of embodiments of the invention 3.
Figure 11 is the distressed structure schematic diagram of the flow-guiding channel of embodiments of the invention 3.
Figure 12 is the structural representation of the flow directing insert of embodiments of the invention 4.
Detailed description of the invention
Embodiment 1
Please refer to Fig. 3 and Fig. 4, wherein, Fig. 3 is embodiment 1 structural representation of the spark plug of the present invention, and Fig. 4 is the connection diagram of the central electrode of the present embodiment spark plug. This spark plug 30 includes central electrode 31, insulator 32, housing 33, flow directing insert 34 and ground electrode 35.
Described insulator 32 is ceramics insulator, and it has the axis hole extended in the axial direction. This central electrode 31 is inserted through the axis hole of this insulator 34, and exposes its end 311. Described housing 33 is hollow structure, is set in the surface of this insulator 32.
Described flow directing insert 34 is internal has a flow-guiding channel 341, the front proper centering heart electrode end of described flow-guiding channel 341, and rear end is positioned at the opening of housing 33; The cross-sectional sizes of described flow-guiding channel 341 is successively decreased from rear and front end toward middle part, until form a narrow larynx at middle part. Separating mutually between the outer wall of described flow directing insert 34 with housing 33 inwall, form an annular space B, described flow-guiding channel 341 connects with described annular space B. Described annular space B is used for storing combustion gas, conveniently the combustion gas of annular space is replenished in flow-guiding channel 341. Concrete, in the present embodiment, the outside wall surface of described flow directing insert 34 is two cancave cambered surfaces, forms described flow-guiding channel 341 between two cancave cambered surfaces. Described flow-guiding channel 341 is provided with an outlet A towards one end of combustor A1. Described annular space B is towards the opening A of combustor2More than the annular space B opening B towards central electrode 311��
Described ground electrode 35 is arranged on housing 33 inwall or is arranged in flow directing insert 34. In the present embodiment, described ground electrode 35 is arranged on the inwall of flow directing insert 34 by connecting rod 351, and and forms the firing end portion with spark-discharge gap between the end of central electrode 31. Concrete, described ground electrode 35 can be annular, pentagonal or triangle.
Further, in order to realize the connection of flow directing insert 34 and housing 33, in this embodiment, described flow directing insert 34 is connected with the inwall of housing 33 by least two connecting rod 342, hollow out between described adjacent two connecting rods 342, to ensure that combustion gas can circulate at annular space B and flow-guiding channel 341. It addition, as the another kind of variant embodiment of the present embodiment, described inner walls is provided with many places fin, is provided with space between adjacent two fins; Described flow directing insert one end relative with central electrode is arranged on above fin. By arranging fin in the inner walls near one end of central electrode, in order to support flow directing insert, it is fixed in the inside of housing. Further, it is also possible in flow directing insert, the one end near combustor arranges connecting rod, the connection of flow directing insert and housing is reinforced further.
Further, the flow-guiding channel 341 at described narrow larynx place is provided with at least one side opening, and the area of described side opening is less than the area of narrow larynx. Due to when combustion gas is moved in flow-guiding channel, when narrow larynx, the speed of injection can be further speeded up, now form pressure reduction with the annular space outside flow-guiding channel, in order in fuel supplement to flow-guiding channel, by increasing side opening at narrow larynx place, supplementing of combustion gas will be facilitated rapidly. Meanwhile, the area of described side opening is less than the area of narrow larynx, it is prevented that the combustion gas in flow-guiding channel is discharged from side opening.
Further, the inwall of the front-end and back-end of described flow-guiding channel 341 is provided with spiral helicine groove or fin. By increasing spiral helicine groove or fin, it is possible to possess vortex impulse force after causing air flow through, strengthen jeting effect.
Further, the outer wall of described flow directing insert 34 and the inwall of housing 33 are provided with corresponding groove, form breather line. From combustor, entering the space of the central electrode of enclosure interior for convenient and quickening combustion gas, by arranging groove on the outer wall of flow directing insert, thus forming breather line, facilitating the space entering central electrode place of combustion gas. Alternative deformation as the present invention, the outer wall of described flow directing insert is provided with a plurality of groove of coherent rear and front end, described every groove is respectively and with inner walls just to a plurality of pipeline of formation that combines, and one end of described pipeline is towards central electrode, and the other end is towards the opening of housing; Or, described inner walls opening extends to central electrode direction and is provided with a plurality of groove, described every groove respectively with flow directing insert outer wall just to a plurality of pipeline of formation that combines, one end of described pipeline is towards central electrode, and other end is to the opening of housing.
In one end towards combustor A of flow-guiding channel 341, in order to increase torsion, on the flow-guiding channel within described flow directing insert 34,341 it is provided with at least one baffle plate 343 further; Described baffle plate 343 is connected with the inwall of flow-guiding channel 341 by least two connecting rod; Described baffle plate 343 is provided with a through hole 3431. Being found by contrast test, this ratio (flow of injection) accounting for whole jet pipe cross section baffle plate 343 area with the size (pressure of through hole output) in through hole 3431 aperture and the gross area of through hole has relation. The through hole 3431 arranged on baffle plate 343, aperture is more little, the stream pressure that it sprays outward is more big, aperture on baffle plate is less than the aperture of the narrow larynx of jet pipe, and so the gross area of through hole accounts for the outputting torsion that this ratio of the 0.2-0.8 of the jet pipe cross-sectional area of baffle position is most effective raising electromotor on baffle plate 343, the automobile manipulation when low speed can be effectively improved and experience. Therefore, in the present embodiment, the area of described baffle plate through hole accounts for the 20%��80% of baffle plate area.
Referring to Fig. 5, it is the schematic diagram of baffle plate of the present embodiment. Further, in order to realize the supercharging step by step in also combustion gas, use multilamellar baffle plate 343 in the present embodiment, every layer of baffle plate 343 is designed with through hole 3431, the pore size of described through hole 3431 is gradually reduced from the direction of combustor A past in flow-guiding channel 341, thus adding the jet velocity of combustion gas. It addition, refer to Fig. 6, it is the deformation schematic diagram of another kind of baffle plate of the present embodiment. As the another embodiment of the present embodiment, described each baffle plate 343 is provided with multiple through hole 3431, and through hole 3431 number of described baffle plate 343 is incremented by successively from the direction of combustor A past in flow-guiding channel 341; The pore size of described baffle plate through hole 3431 is gradually reduced from the direction of combustor A past in flow-guiding channel 341.
The work process of spark plug described in detail below: fuel enters in flow-guiding channel and the annular space of spark plug under the promotion of external pressure. Then after ground electrode is lighted a fire by central electrode, fuel combustion near central electrode expands, gas is done exercises middle acceleration in flow-guiding channel, after reaching narrow larynx, the space of jet pipe is amplified gradually, gas is accelerated again, and the speed of the gas of burning is accelerated to supersonic speed by the design of flow-guiding channel, therefore can accelerate spark and arrive the time in cylinder.
Simultaneously, due to the side through hole arranged in the side of flow directing insert, when air-flow is accelerated, the pressure of flow directing insert inner via hole position can reduce, when the pressure of annular space is constant, create pressure differential, under pressure promotes, in the continuous pushing guidance circulation road of fuel of annular space, so that flow-guiding channel forms a lasting spray combustion draught effect, the burning making fuel is more abundant, thus improve the efficiency of electromotor.
Deformation as the present embodiment, it is possible to flow directing insert is carried out other deformation. Such as:
Referring to Fig. 7, it is the structural representation of the first deformation of flow directing insert. Described flow directing insert 34 is interconnected to form by two round platform cavitys; The slot end of described two round platform cavitys connects in opposite directions, forms a narrow larynx.
Refer to Fig. 8, its be flow directing insert the second deformation structural representation. Described flow directing insert 34 is in turn connected to form by a cylindrical chamber, round platform cavity and a loudspeaker cavity; The Single port of described cylindrical chamber is relative with central electrode, and the other end is connected with the opening end of round platform cavity, and the slot end of described round platform cavity is connected with the slot end of loudspeaker cavity, forms a narrow larynx.
Relative to prior art, the spark plug of the present invention can be prevented effectively from the surge phenomenon that the spark plug of boosting jet this first grade design of type occurs, improve the stability of boosting jet type spark plug air-flow igniting, strengthen and accelerate spark air-flow and enter the time of cylinder body, the power output allowing automobile engine is stablized, and torsion increases. By the air-flow igniting circulated, jet pipe utilizes the through hole at inwall that accelerates to air-flow to form pressure differential, by in the fuel supplement of the gas storage space outside wall to jet pipe, add the flow of injection, form one and continue efficient to cylinder fuel ignition results, make the fuel combustion in cylinder body more abundant, thus improve the efficiency of combustion of internal combustion engine, the discharge of vehicle exhaust more environmental protection.
Embodiment 2
The spark plug of the present embodiment 2 is roughly the same with embodiment 1, and the outer wall of its flow directing insert differing only in spark plug has improved. Referring to Fig. 9, it is the flow-guiding channel structural representation of embodiment 2 of spark plug of the present invention.
In order to realize combustion gas in annular space be sufficiently mixed and separation is dammed, allow fuel gas flow dynamic pressure in region change. In the present embodiment, the outer wall of flow directing insert is optimized design. The spacing of the inwall that the outer wall of described flow directing insert is provided with spaced fin, described fin and housing is gradually increased from central electrode toward the direction of combustor. Meanwhile, by this fin, annular space is divided into multiple space, thus being separated damming to the fuel gas flow in annular space.
It addition, as the another kind of variant embodiment of the present embodiment, it is also possible in annular space, increase multiple baffle plate; Described baffle plate is provided with through hole, and the aperture of described through hole is incremented by from central electrode toward the direction of combustor.
Embodiment 3
The spark plug of the present embodiment 3 is roughly the same with the spark plug of embodiment 1, and it differs only in and has carried out deformation improvement inside the flow directing insert of spark plug. Referring to Figure 10, it is the structural representation of flow-guiding channel of embodiment 3 of spark plug of the present invention.
In the present embodiment, arranging a baffle plate 343 in the flow-guiding channel 341 within described flow directing insert 34, described baffle plate 343 is provided with a through hole 3431, and the aperture of described through hole 3431 is gradually reduced along central electrode toward combustor A direction. Described through hole 3431 forms described narrow larynx towards one end of combustor A.
It addition, refer to Figure 11, it is the distressed structure schematic diagram of flow directing insert of the present embodiment 3. As the another kind of deformation of the present embodiment, through hole 3431 area of described baffle plate 343 is from two ends toward middle constriction, and the two ends of described through hole 3431 are a loudspeaker opening.
Embodiment 4
The spark plug of the present embodiment 3 is roughly the same with the spark plug configuration of embodiment 1, and it is distinctive in that in the present embodiment, and described ground electrode is arranged on the inwall of housing, and the flow directing insert of the present embodiment has carried out deformation and improved.
Referring to Figure 12, it is the structural representation of flow directing insert of the present embodiment. In order to prevent surge phenomenon, described flow-guiding channel 341 extends towards one end of central electrode 31 to the inwall of housing 33; The aperture that described flow-guiding channel 341 connects with annular space connects the aperture of one end less than flow-guiding channel 341 and central electrode 31. By will the flow-guiding channel pipe 341 of described flow directing insert 34 extend towards the opening of central electrode 341 to the inwall of housing, form flow-guiding channel 341 space expanded, thus ignition center electrode 31 and ground electrode 35 being arranged in flow-guiding channel 341. Connect in this manner it is ensured that flow-guiding channel 341 is formed with the space at central electrode 31 place, and flow-guiding channel 341 is formed with annular space in parallel. Further, on described flow-guiding channel 341, narrow larynx place is provided with at least one side opening, and the area of described side opening is less than the area of narrow larynx. Due to when combustion gas is moved in flow-guiding channel, when narrow larynx, the speed of injection can be further speeded up, now form pressure reduction with the annular space outside flow-guiding channel, in order in fuel supplement to flow-guiding channel, by increasing side opening at narrow larynx place, supplementing of combustion gas will be facilitated rapidly. Meanwhile, the area of described side opening is less than the area of narrow larynx, it is prevented that the combustion gas in flow-guiding channel is discharged from side opening.
The structure of the above-mentioned segmentation plug-in unit of the present invention is not limited to above-described embodiment, and the architectural feature in each embodiment can rationally cross coupled use, to be suitable for the spark plug of different model. The invention is not limited in above-mentioned embodiment, if to invention various changes or deformation without departing from the spirit and scope of the present invention, if these are changed and deform within the claim and the equivalent technologies scope that belong to the present invention, then the present invention is also intended to comprise these changes and deformation.
Claims (16)
1. a spark plug, it is characterised in that include
Insulator, it has the axis hole extended in the axial direction;
Central electrode, its axis hole being inserted through this insulator exposed end;
Housing, it is hollow columnar, and this housing is set in this insulator surface;
Flow directing insert, has a flow-guiding channel inside it, the front proper centering heart electrode end of described flow-guiding channel, and rear end is positioned at the opening of housing; Being provided with a narrow larynx inside described flow-guiding channel, the area of described narrow larynx is less than the area of flow-guiding channel both ends open; Wherein,
The outer wall of described flow directing insert separates with inner walls, forms an annular space; Described flow-guiding channel connects with described annular space; Or,
The outer wall of described flow directing insert is provided with a plurality of groove of coherent rear and front end, and described every groove is respectively and with inner walls just to a plurality of pipeline of formation that combines, and one end of described pipeline is towards central electrode, and the other end is towards the opening of housing; Or,
Described inner walls opening extends to central electrode direction and is provided with a plurality of groove, described every groove respectively with flow directing insert outer wall just to a plurality of pipeline of formation that combines, one end of described pipeline is towards central electrode, and other end is to the opening of housing;
Ground electrode, it is arranged in inner walls or is arranged in flow directing insert, and and forms the firing end portion with spark-discharge gap between the end of central electrode.
2. spark plug according to claim 1, it is characterised in that: described ground electrode is arranged on the inwall of housing, and described flow-guiding channel extends towards one end of central electrode to the inwall of housing; The aperture that described flow-guiding channel connects with annular space connects the aperture of one end less than flow-guiding channel with central electrode.
3. spark plug according to claim 1, it is characterised in that: the cross-sectional sizes of described flow-guiding channel is successively decreased from rear and front end toward middle part, and forms described narrow larynx in the middle part of flow-guiding channel.
4. spark plug according to claim 1, it is characterized in that: described flow-guiding channel is a cylindrical passageway, in described flow-guiding channel, pressuring baffle is set, described pressuring baffle is provided with a through hole, the aperture of described through hole is gradually reduced along central electrode toward the direction of shell nozzle end, forms described narrow larynx.
5. spark plug according to claim 1, it is characterised in that: described flow directing insert is connected with the inwall of housing by least two connecting rod.
6. spark plug according to claim 1, it is characterised in that: described inner walls is provided with many places fin, is provided with space between adjacent two fins; Described flow directing insert one end relative with central electrode is arranged on above fin.
7. spark plug according to claim 5, it is characterised in that: the flow-guiding channel at described narrow larynx place is provided with at least one side opening, and the area of described side opening is less than the area of narrow larynx.
8. spark plug according to claim 7, it is characterised in that: described flow directing insert is interconnected to form by two round platform cavitys; The slot end of described two round platform cavitys connects in opposite directions, forms a narrow larynx.
9. spark plug according to claim 7, it is characterised in that: described flow directing insert is in turn connected to form by a cylindrical chamber, round platform cavity and a loudspeaker cavity; The Single port of described cylindrical chamber is relative with central electrode, and the other end is connected with the opening end of round platform cavity, and the slot end of described round platform cavity is connected with the slot end of loudspeaker cavity, forms a narrow larynx.
10. spark plug according to claim 9, it is characterised in that: the outer wall of described cylindrical chamber and be respectively equipped with corresponding groove on the inwall of housing, form breather line.
11. according to the spark plug described in claim 5-10 any one, it is characterised in that: the flow-guiding channel within described flow directing insert is provided with at least one baffle plate; Described baffle plate is provided with at least one through hole.
12. spark plug according to claim 11, it is characterised in that: the area of described baffle plate through hole accounts for the 20%��80% of baffle plate area.
13. spark plug according to claim 12, it is characterised in that: the aperture of the through hole of described baffle plate is gradually reduced along central electrode toward the direction of shell nozzle end.
14. spark plug according to claim 1, it is characterised in that: the spacing of the inwall that the outer wall of described flow directing insert is provided with spaced fin, described fin and housing is gradually increased from central electrode toward the direction of combustor.
15. spark plug according to claim 1, it is characterised in that: described ground electrode is annular, pentagonal or triangle.
16. spark plug according to claim 1, it is characterised in that: the inwall of the front-end and back-end of described flow-guiding channel is provided with spiral helicine groove or fin.
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| CN201410609210.0A CN105633800B (en) | 2014-10-31 | 2014-10-31 | A kind of spark plug |
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| CN201410609210.0A CN105633800B (en) | 2014-10-31 | 2014-10-31 | A kind of spark plug |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110168825A (en) * | 2016-12-09 | 2019-08-23 | V·拉比 | Spark plug with shuttle moving electrode |
| CN112913096A (en) * | 2019-09-05 | 2021-06-04 | 日本特殊陶业株式会社 | Spark plug |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008111340A (en) * | 2006-10-27 | 2008-05-15 | Mitsubishi Heavy Ind Ltd | Injector and combustor for rocket |
| CN102623896A (en) * | 2012-04-20 | 2012-08-01 | 张蝶儿 | Spark plug |
| CN103746291A (en) * | 2014-01-29 | 2014-04-23 | 张蝶儿 | Sparking plug |
| CN103779788A (en) * | 2014-01-29 | 2014-05-07 | 张蝶儿 | Spark plug and ignition system of internal combustion engine using spark plug |
| CN204205282U (en) * | 2014-10-31 | 2015-03-11 | 张蝶儿 | A kind of spark plug |
-
2014
- 2014-10-31 CN CN201410609210.0A patent/CN105633800B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008111340A (en) * | 2006-10-27 | 2008-05-15 | Mitsubishi Heavy Ind Ltd | Injector and combustor for rocket |
| CN102623896A (en) * | 2012-04-20 | 2012-08-01 | 张蝶儿 | Spark plug |
| CN103746291A (en) * | 2014-01-29 | 2014-04-23 | 张蝶儿 | Sparking plug |
| CN103779788A (en) * | 2014-01-29 | 2014-05-07 | 张蝶儿 | Spark plug and ignition system of internal combustion engine using spark plug |
| CN204205282U (en) * | 2014-10-31 | 2015-03-11 | 张蝶儿 | A kind of spark plug |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110168825A (en) * | 2016-12-09 | 2019-08-23 | V·拉比 | Spark plug with shuttle moving electrode |
| CN110168825B (en) * | 2016-12-09 | 2021-04-20 | V·拉比 | Spark plug with shuttling electrode |
| CN112913096A (en) * | 2019-09-05 | 2021-06-04 | 日本特殊陶业株式会社 | Spark plug |
| US11515690B2 (en) | 2019-09-05 | 2022-11-29 | Ngk Spark Plug Co., Ltd. | Spark plug |
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| Publication number | Publication date |
|---|---|
| CN105633800B (en) | 2017-03-29 |
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