CN110391592A - Spark plug, engine, plug ignition method and engine ignition method - Google Patents
Spark plug, engine, plug ignition method and engine ignition method Download PDFInfo
- Publication number
- CN110391592A CN110391592A CN201810368115.4A CN201810368115A CN110391592A CN 110391592 A CN110391592 A CN 110391592A CN 201810368115 A CN201810368115 A CN 201810368115A CN 110391592 A CN110391592 A CN 110391592A
- Authority
- CN
- China
- Prior art keywords
- spark plug
- precombustion chamber
- electrode
- engine
- grounding 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/54—Sparking plugs having electrodes arranged in a partly-enclosed ignition chamber
Landscapes
- Spark Plugs (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The present invention relates to engine ignition technical field, a kind of spark plug, engine, plug ignition method and engine ignition method are disclosed.The spark plug includes shell, discharge electrode and grounding electrode, and the precombustion chamber with opening is formed in shell, and grounding electrode is arranged in precombustion chamber, and discharge electrode extend into precombustion chamber and forms ignition gap between grounding electrode.After the spark plug is installed in the cylinder head of engine, precombustion chamber will be connected by opening and the combustion chamber of engine, in this way, after fuel and air mixture enters in combustion chamber, part can be entered in precombustion chamber by opening, since the indoor volume of pre-burning is smaller, at this time, fuel will be lighted by the electric spark that the electric discharge between discharge electrode and grounding electrode is formed, the burning gases of the high temperature and pressure formed in precombustion chamber enter combustion chamber by the jet stream that is open, the fuel of combustion chamber is refired, to realize the igniting and burning of stability and high efficiency.
Description
Technical field
The present invention relates to engine ignition technical fields, and in particular, to a kind of spark plug, a kind of engine, Yi Zhonghuo
Spark plug ignition method and a kind of engine ignition method.
Background technique
Currently, spark ignition engine can extend into the combustion chamber of engine by spark plug, combustion is lighted with electric discharge
Burn indoor fuel air mixture.The performance of spark plug directly affects the performance of engine.
Ammonia can be used as spark ignition IC engine fuel.Ammonia burning does not generate CO2, reduces greenhouse gases to ring
The influence in border.Ammonia can be synthesized by renewable energy, reduce dependence of the mankind to non-renewable fossil energy.Another party
Face is typically supplied lean fuel mixture now with the engine that gas (such as natural gas, biogas, synthesis gas) is fuel, i.e., high
The air and fuel mixture of air-fuel ratio.
But the ignition performance of ammonia is poor and flame propagation velocity is very low, traditional spark plug cannot be solved effectively
Certainly ammonia is not easy the problem of catching fire and burning in cylinder IC engine.In addition, lean fuel mixture frequently results in bad, detonation of catching fire
And imperfect combustion, similarly, traditional spark plug cannot effectively light lean fuel mixture and spark in combustion chamber
The service life of plug is also very short.
Summary of the invention
The object of the present invention is to provide a kind of spark plug, which can effectively realize ammonia and the combustion of other gases
Expect efficient igniting and the burning under lean combustion operating condition.
To achieve the goals above, the present invention provides a kind of spark plug, which includes shell, discharge electrode and ground connection
Electrode, wherein the precombustion chamber with opening is formed in the shell, the grounding electrode is arranged in the precombustion chamber, institute
Discharge electrode is stated to extend into the precombustion chamber and form ignition gap between the grounding electrode.
Through the above technical solutions, due to being formed with precombustion chamber in the shell of spark plug, and discharge electrode and grounding electrode
Between ignition gap be located in the precombustion chamber, and precombustion chamber has opening, which is installed to the cylinder head of engine
After upper, precombustion chamber will be connected by opening and the combustion chamber of engine, in this way, fuel and air mixture enters in combustion chamber
Afterwards, it can partially be entered in precombustion chamber by opening, since the volume of precombustion chamber is smaller, at this point, passing through discharge electrode and ground connection
The electric spark that electric discharge between electrode is formed will light fuel, and the burning gases of the high temperature and pressure formed in precombustion chamber are by opening
Mouth jet stream enters combustion chamber, the fuel of combustion chamber is refired, to realize the igniting and burning of stability and high efficiency.
Further, the size of the ignition gap can adjust.
Further, the grounding electrode and/or the discharge electrode are configured to adjustment to adjust the igniting
Gap.
Further, the grounding electrode is configured to flexible structure.
In addition, the size of the ignition gap is 0.1-1mm.
In addition, the grounding electrode is connected on the inner peripheral surface of the precombustion chamber.
Further, the grounding electrode and the integrally formed connection of the shell.
In addition, the discharge electrode includes extending into the indoor electrode cylinder of the pre-burning and being formed in the electrode cylinder
The indoor electric discharge end of the pre-burning is gone up and be located at, is formed between the igniting between the electric discharge end and the grounding electrode
Gap.
Further, the electric discharge end is multiple and is arranged at intervals on the electrode cylinder along the circumferential direction,
Each electric discharge end is corresponding with the respective grounding electrode.
Further, at least one of the electric discharge end and the grounding electrode are acicular texture.
In addition, being formed with combustion supporting catalyst on the surface of at least one of the discharge electrode and described grounding electrode
Layer.
Further, the combustion supporting catalytic oxidant layer is platinum, rhodium, gold, gong or tungsten vanadium alloy layers.
In addition, the spark plug includes insulator, wherein the insulator is arranged in the shell, so that described outer
A part of shell inner space is formed as the precombustion chamber, and the discharge electrode passes through the insulator and extend into the precombustion chamber
It is interior.
In addition, the spark plug includes the end cap with multiple meshes, the end cap setting is over said opening.
Further, the size of the mesh can adjust.
Further, the end cap includes two layers stacked, and one layer of end cap can laterally be moved relative to another side end cap
The dynamic coincidence area size to adjust mesh.
Further, the end cap is metal mesh or porous plate.
Further, the aperture of the mesh, which is set greater than, enters the flame that fuel is ignited in the precombustion chamber
Minimum extinguishes gap.
Further, the end cap is by having open fixed lid installation over said opening, wherein the fixed lid
Side wall on internal screw thread and the external screw thread of the shell cooperate, be formed with outer spiral shell on the outer peripheral surface of the side wall of the fixed lid
Line, the bottom wall of the fixed lid are formed with described open and are pressed the end cap.
In addition, the volume of the precombustion chamber is set smaller than the 1% of the engine cylinder displacement for being equipped with the spark plug.
On the basis of any of the above spark plug, the present invention also provides a kind of engine, more than the engine includes
Any spark plug, wherein the spark plug may be mounted in any appropriate position such as cylinder head of engine,
In, the precombustion chamber is communicated by the opening with the combustion chamber of air cylinder of engine.In this way, it is as described above, the engine
Ignition performance and overall quality are significantly improved.
In addition, based on the inventive concept solved the problems, such as, the present invention provides a kind of plug ignition method, in the outer of spark plug
The precombustion chamber with opening is formed in shell, and the ignitor of spark plug such as discharge electrode and grounding electrode are arranged described
In precombustion chamber, the plug ignition method includes: that discharge in the precombustion chamber electric spark of generation of ignitor first will go into
The indoor ignited fuel of pre-burning, the interior burning gases formed of precombustion chamber can go out from opening jet stream.
In this way, can partially be entered in precombustion chamber by opening after fuel and air mixture enters in combustion chamber, by
It is in the limitation of spark plug self structure, the volume for the precombustion chamber for making it internal is smaller, at this point, such as being put by ignitor
The electric spark that electric discharge between electrode and grounding electrode is formed will light the indoor fuel of pre-burning, the height formed in precombustion chamber
The burning gases of warm high pressure enter combustion chamber by the jet stream that is open, and the fuel of combustion chamber are refired, to realize stability and high efficiency
Igniting and burning.
Further, combustion supporting catalytic oxidant layer is provided on the outer surface of the ignitor.
Finally, the present invention provides a kind of engine ignition method, the engine ignition method includes described in any of the above
Plug ignition method, wherein the burning gases formed in the precombustion chamber of spark plug enter after going out from opening jet stream to be started
In the combustion chamber of machine and light the indoor fuel of burning.As described above, by the engine ignition method, it can be realized and start
The igniting and burning of machine stability and high efficiency.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a kind of exemplary construction schematic diagram for the spark plug that the specific embodiment of the invention provides；
Fig. 2 is a kind of exemplary construction schematic diagram of discharge electrode and grounding electrode distribution in the spark plug of Fig. 1.
Description of symbols
1- shell, 2- discharge electrode, 3- grounding electrode, 4- opening, 5- precombustion chamber, 6- ignition gap, 7- electrode cylinder, 8-
Electric discharge end, 9- insulator, 10- end cap, the fixed lid of 11-.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
With reference to structure shown in FIG. 1, spark plug provided by the invention includes shell 1, discharge electrode 2 and grounding electrode 3,
In, the precombustion chamber 5 with opening 4 is formed in shell 1, grounding electrode 3 is arranged in precombustion chamber 5, and discharge electrode 2 passes through pre-burning
The wall of room 5 and extend into precombustion chamber 5 and between grounding electrode 3 formed ignition gap 6.
In the technical scheme, due to being formed with precombustion chamber 5 in the shell of spark plug 1, and discharge electrode 2 and grounding electrode
Ignition gap 6 between 3 is located in the precombustion chamber 5, and precombustion chamber 5 has opening 4, which is installed to the gas of engine
After on cylinder cap, precombustion chamber 5 will be connected by opening 4 and the combustion chamber of engine, in this way, fuel and air mixture enters combustion
After burning interior, it can partially be entered in precombustion chamber 5 by opening 4, since the volume of precombustion chamber 5 is smaller, at this point, even fuel
It, also being capable of point by the electric spark that the electric discharge between discharge electrode 2 and grounding electrode 3 is formed using ammonia or lean fuel mixture
The fuel in precombustion chamber 5 is fired, the burning gases of the high temperature and pressure formed in precombustion chamber 5 enter combustion chamber by 4 jet streams that are open,
The fuel of combustion chamber is refired, so that the igniting and burning of stability and high efficiency are realized, in this way, the spark plug can be realized effectively
Ammonia and efficient stable reliable ignition and reliable and stable burning under other gaseous fuel lean combustion operating conditions improve igniting effect
Rate, especially adaptation low heat value, low flame propagation velocity, high ignition energy gaseous fuel.
In addition, the size of the ignition gap 6 formed between discharge electrode 2 and grounding electrode 3 also will affect the life of electric spark
At so that ignition results are influenced, therefore, in order to be suitable for different fuel, it is preferable that refer to shown in FIG. 1, ignition gap 6
Size can adjust, for example, in the construction shown in fig. 1, the size of ignition gap 6 can be adjusted radially, alternatively, when electric discharge
When electrode 2 and grounding electrode 3 are arranged along the axial direction of shell, the size of ignition gap 6 can be axially adjustable, this is depended on
The positional relationship of discharge electrode 2 and grounding electrode 3.
Certainly, the adjustment of 6 size of ignition gap can be realized in several ways, for example, in a kind of mode, Ke Yitong
Adjustment grounding electrode 3 is crossed relative to the position of discharge electrode 2 to adjust (as shown by the arrow in Figure 2), alternatively, another way
In, it can be adjusted by adjusting discharge electrode 2 relative to the position of grounding electrode 3, alternatively, in yet another approach, Ke Yitong
When adjustment grounding electrode 3 and discharge electrode 2 to adjust ignition gap 6.It that is to say, before spark plug is installed to engine,
The fuel according to needed for engine correspondingly adjusts ignition gap 6.
Further, the adjustment of grounding electrode 3 and/or discharge electrode 2 can be realized in several ways, for example, one
In kind of mode, grounding electrode 3 and/or discharge electrode 2 can be set to the stretching structure for the electric conductive section form that more piece is successively set with,
In this way, can stretch to adjust the length of grounding electrode 3 and/or discharge electrode 2；Alternatively, in another way, grounding electrode 3
And/or discharge electrode 2 can be formed as the stretching structure of compliant conductive silk form, the reciprocally bending extension of compliant conductive silk, lead to
Overstretching compresses to change the length of compliant conductive silk, this can equally adjust ignition gap 6.
In addition, ignition gap 6 can be any range appropriate, as long as generating electric spark after can satisfy energization,
For example, the size of ignition gap 6 can be 0.1-1mm, it is therefore preferable to 0.5mm.
Certainly, grounding electrode 3 can be arranged in several ways in precombustion chamber 5, such as in a kind of form, in Fig. 1 institute
In the structure shown, grounding electrode 3 be can connect on the inner peripheral surface of precombustion chamber 5, in this way, between grounding electrode 3 and discharge electrode 2
The ignition gap 6 of radial direction will be formed.Alternatively, grounding electrode 3 can be set on end cap 10 in another form, in this way,
When the electric discharge at the end of the axial of discharge electrode 2 extends, formed between grounding electrode 3 and discharge electrode 2 between the igniting of axial direction
Gap 6 will form radial direction when the electric discharge end of discharge electrode 2 radially extends between grounding electrode 3 and discharge electrode 2
Ignition gap 6.
Certainly, grounding electrode 3 can be by screw, conductive adhesive, welding or clamping on the shell, alternatively, in order to mention
Rise the reliability of connection, it is preferable that grounding electrode 3 and the integrally formed connection of shell, it is, the connecting pin of grounding electrode 3 with
Shell is integrally formed.
It in addition, discharge electrode 2 can have diversified forms, for example can be directly a conductive filament, alternatively, as shown in Figure 1
, discharge electrode 2 includes the electrode cylinder 7 extending into precombustion chamber 5 and is formed on electrode cylinder 7 and is located in precombustion chamber 5
Electric discharge end 8, discharge and form ignition gap 6 between end 8 and grounding electrode 3.In this way, electrode cylinder 7 is while conduction,
The reliability of the positioning of discharge electrode 2 can be promoted significantly.
Further, in order to expand the electric spark of generation, increasing ignition effect, it is preferable that as depicted in figs. 1 and 2, it puts
Electric end 8 is multiple and is arranged at intervals on electrode cylinder 7 along the circumferential direction that each electric discharge end 8 is corresponding with respective
Grounding electrode 3, for example, just having three groups of radially corresponding electric discharge end 8 and grounding electrodes 3 in Fig. 2, in this way, will be formed basic
The electric spark of annular, to be easier to light the indoor fuel combination of pre-burning.Certainly, in actual application, can increase
Or reduce the number of grounding electrode and end of discharging.
In addition, as shown in Figure 2, electric discharge at least one of end 8 and grounding electrode 3 are acicular texture.In this way, can be with
Realization reaches stable ignition under lower sparking voltage, energy required for lighting a fire is reduced, to be conducive in low ignition voltage
Lower formation ignition center.
In addition, for further increasing ignition effect, it is preferable that at least one of discharge electrode 2 and grounding electrode 3
Surface on be formed with combustion supporting catalytic oxidant layer.For example, being formed on the electric discharge end 8 of acicular texture and the surface of grounding electrode 3
There is combustion-supporting catalyst layer, the oxidation rate of fuel can be improved in combustion supporting catalytic oxidant layer, discharges heat, promotes kindling.In this way, helping
Under the double action for firing catalyst layer and precombustion chamber, the electric spark generated between end 8 and grounding electrode 3 that discharges is easier to light
The indoor fuel of pre-burning, plays catalysis combustion function.
Further, combustion supporting catalytic oxidant layer can be platinum, rhodium, gold, gong or tungsten vanadium alloy layers, can pass through chemical deposition
Or the method for electrochemical deposition is deposited on the surface of electric discharge end 8 and grounding electrode 3.
In addition, in order to promote the reliability of the positioning of discharge electrode 2 and the insulating properties between shell, as shown in Figure 1,
Spark plug includes insulator 9, such as ceramics, wherein insulator 9 is arranged in shell 1, so that one of 1 inner space of shell
Divide and be formed as precombustion chamber 5, discharge electrode 2 passes through insulator 9 and extend into precombustion chamber 5.In this way, insulator can effectively insulate
The spark plug good mechanical strength can be kept while discharge electrode 2 and shell in the high temperature environment.
In addition, in order to promote the protective of electric discharge end 8 and grounding electrode 3, it is preferable that as shown in Figure 1, spark plug packet
The end cap 10 with multiple meshes is included, end cap 10 is arranged in opening 4, in this way, in the construction shown in fig. 1, shell, insulator
Precombustion chamber is formed with end cap 10, the mesh that the indoor burning gases of pre-burning can pass through on end cap 10 enters in combustion chamber.
Further, in order to be adapted to different fuel and combustion conditions, it is preferable that the size of the mesh can be adjusted
It is whole, in this way, can choose appropriate matched mesh according to different fuel and combustion conditions.Certainly, the size adjustment of mesh can
To realize in several ways, for example, in a kind of mode multiple end caps 10 with different pore size size can be provided, this
Sample can choose the corresponding end cap 10 of replacement.Or in another way, one can be set on end cap 10 has corresponding aperture
Adjustable plate, by mobile adjustable plate, aperture on adjustable adjustable plate and mesh are overlapped area's size to adjust the big of mesh
It is small.Alternatively, end cap 10 includes two layers stacked in yet another approach, one layer of end cap can laterally be moved relative to another side end cap
The dynamic coincidence area size to adjust mesh, the size of this same adjustable mesh.
Further, end cap 10 is metal mesh or porous plate, and certainly, the eyelet on the grid and porous plate on metal mesh will
Form mesh.
In addition, entering combustion chamber in order to which the indoor burning gases of pre-burning of being more convenient for can pass through the mesh on end cap 10
It is interior, it is preferable that the aperture of mesh is set greater than the minimum extinguishing gap for entering the flame that fuel is ignited in precombustion chamber 5,
As long as the indoor burning gases of pre-burning would not extinguish when passing through mesh, and can be reliable and stable in this way, meeting this condition
Fuel in ground pilot combustion room.
Certainly, end cap 10 can be mounted in several ways opening 4 on, for example, can by connectors such as screws, or
Person is by clamping structure, alternatively, for the ease of the installation of spark plug, it is preferable that as shown in Figure 1, end cap 10 is spacious by having
The fixation lid 11 of mouth is mounted in opening 4, wherein and the external screw thread of internal screw thread and shell 1 on the side wall of fixed lid 11 cooperates, Gu
Determine to be formed with external screw thread on the outer peripheral surface of the side wall of lid 11, the bottom wall of fixed lid 11 is formed with open and press mounting end covers 10.In this way,
End cap 10 is mounted in opening 4 by being threadedly engaged between fixed lid 11 and shell, meanwhile, the external screw thread on fixed lid 11
The spark plug is also convenient for connect with cylinder head.
Finally, the volume of precombustion chamber 5 can select according to actual needs, still, for increasing ignition effect, preferably
Ground, the volume of precombustion chamber 5 are set smaller than the 1% of the engine cylinder displacement for being equipped with the spark plug.In this way, entering pre-burning
A small amount of gas in room 5 is easier to be ignited.
On the basis of any of the above spark plug, the present invention provides a kind of engine, and engine includes any of the above institute
The spark plug stated, wherein precombustion chamber is communicated by being open with the combustion chamber of air cylinder of engine, for example, spark plug can be set
In the cylinder head of engine, precombustion chamber is allowed to be located in cylinder combustion room and communicate by being open with combustion chamber of air cylinder.This
Sample, it is as above, in a kind of embodiment, during operation, when engine piston moves up during compressing circulation, air,
Fuel enters precombustion chamber, a small amount of fuel air mixture ignition in precombustion chamber, the height of generation by the mesh on end cap
Warm high-pressure combustion product enters combustion chamber of air cylinder by mesh jet stream, lights the fuel and air gaseous mixture in cylinder combustion room,
Realize the kindling and burning of efficient stable.In this way, the ignition performance and overall quality of the engine are significantly improved.
In addition, based on the identical design for solving prior art problem, the present invention provides a kind of plug ignition method, In
The precombustion chamber with opening is formed in the shell of spark plug, and the ignitor of spark plug is arranged in the precombustion chamber, institute
Stating plug ignition method includes: that discharge in the precombustion chamber electric spark of generation of ignitor first will go into the indoor combustion of pre-burning
Shots combustion, the interior burning gases formed of precombustion chamber can go out from opening jet stream.
In this way, can partially be entered in precombustion chamber by opening after fuel and air mixture enters in combustion chamber, by
It is in the limitation of spark plug self structure, the volume for the precombustion chamber for making it internal is smaller, at this point, such as being put by ignitor
The electric spark that electric discharge between electrode and grounding electrode is formed will light the indoor fuel of pre-burning, the height formed in precombustion chamber
The burning gases of warm high pressure enter combustion chamber by the jet stream that is open, and the fuel of combustion chamber are refired, to realize stability and high efficiency
Igniting and burning.
Further, for further increasing ignition effect, the ignitor such as discharge electrode and grounding electrode
At least one of outer surface on be provided with combustion supporting catalytic oxidant layer.The oxidation rate of fuel can be improved in combustion supporting catalytic oxidant layer,
Heat is discharged, kindling is promoted.In this way, under the double action of combustion supporting catalytic oxidant layer and precombustion chamber, the electric discharge end of discharge electrode
The electric spark generated between grounding electrode is easier to light the indoor fuel of pre-burning, plays catalysis combustion function.
Further, combustion supporting catalytic oxidant layer can be platinum, rhodium, gold, gong or tungsten vanadium alloy layers, can pass through chemical deposition
Or the method for electrochemical deposition is deposited on the surface of electric discharge end and grounding electrode.
Further, in the plug ignition method, the electric discharge end of ignitor such as discharge electrode and ground connection electricity
At least one of pole is acicular texture.In this manner it is achieved that reaching stable ignition under lower sparking voltage, igniting is reduced
Required energy, to be conducive to form ignition center under low ignition voltage.
Finally, the present invention provides a kind of engine ignition method, the engine ignition method includes described in any of the above
Plug ignition method, wherein the burning gases formed in the precombustion chamber of spark plug enter after going out from opening jet stream to be started
In the combustion chamber of machine and light the indoor fuel of burning.As described above, by the engine ignition method, it can be realized and start
The igniting and burning of machine stability and high efficiency.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (24)
1. a kind of spark plug, which is characterized in that including shell (1), discharge electrode (2) and grounding electrode (3), wherein described outer
The precombustion chamber (5) with opening (4) is formed in shell (1), grounding electrode (3) setting is described in the precombustion chamber (5)
Discharge electrode (2) extend into the precombustion chamber (5) and forms ignition gap (6) between the grounding electrode (3).
2. spark plug according to claim 1, which is characterized in that the size of the ignition gap (6) can adjust.
3. spark plug according to claim 2, which is characterized in that the grounding electrode (3) and/or the discharge electrode are set
Being set to can adjust to adjust the ignition gap (6).
4. spark plug according to claim 3, which is characterized in that the grounding electrode (3) is configured to flexible knot
Structure.
5. spark plug according to claim 2, which is characterized in that the size of the ignition gap (6) is 0.1-1mm.
6. spark plug according to claim 1, which is characterized in that the grounding electrode (3) is connected to the precombustion chamber (5)
Inner peripheral surface on.
7. spark plug according to claim 6, which is characterized in that the grounding electrode (3) and the shell are integrally formed
Connection.
8. spark plug according to claim 1, which is characterized in that the discharge electrode (2) includes extending into the pre-burning
Electrode cylinder (7) in room (5) and it is formed in the electric discharge end on the electrode cylinder (7) and being located in the precombustion chamber (5)
(8), the ignition gap (6) are formed between the electric discharge end (8) and the grounding electrode (3).
9. spark plug according to claim 8, which is characterized in that the electric discharge end (8) is multiple and circumferentially
Direction is arranged at intervals on the electrode cylinder (7), and each electric discharge end (8) is corresponding with the respective grounding electrode
(3)。
10. spark plug according to claim 8, which is characterized in that the electric discharge end (8) and the grounding electrode (3)
At least one of be acicular texture.
11. spark plug described in any one of -10 according to claim 1, which is characterized in that the discharge electrode (2) and institute
It states and is formed with combustion supporting catalytic oxidant layer on the surface of at least one of grounding electrode (3).
12. spark plug according to claim 11, which is characterized in that the combustion supporting catalytic oxidant layer is platinum, rhodium, gold, gong
Or tungsten vanadium alloy layers.
13. spark plug according to claim 1, which is characterized in that the spark plug includes insulator (9), wherein described
Insulator (9) setting is in the shell (1), so that a part of the shell (1) inner space is formed as the precombustion chamber
(5), the discharge electrode (2) passes through the insulator (9) and extend into the precombustion chamber (5).
14. spark plug according to claim 1, which is characterized in that the spark plug includes the end cap with multiple meshes
(10), the end cap (10) is arranged on the opening (4).
15. spark plug according to claim 14, which is characterized in that the size of the mesh can adjust.
16. spark plug according to claim 15, which is characterized in that the end cap (10) includes two layers stacked, and one layer
End cap can adjust the coincidence area size of mesh relative to another side end cap transverse shifting.
17. spark plug according to claim 14, which is characterized in that the end cap (10) is metal mesh or porous plate.
18. spark plug according to claim 14, which is characterized in that the aperture of the mesh, which is set greater than, enters institute
It states the minimum of the flame for being ignited fuel in precombustion chamber (5) and extinguishes gap.
19. spark plug according to claim 14, which is characterized in that the end cap (10) is by having open fixed lid
(11) be mounted on the opening (4), wherein internal screw thread and the shell (1) on the side wall of the fixed lid (11) it is outer
It is threadedly engaged, external screw thread is formed on the outer peripheral surface of the side wall of the fixed lid (11), the bottom wall of the fixed lid (11) is formed
Have described open and is pressed the end cap (10).
20. spark plug according to claim 1, which is characterized in that the volume of the precombustion chamber (5) is set smaller than installation
There is the 1% of the engine cylinder displacement of the spark plug.
21. a kind of engine, which is characterized in that the engine is provided with according to claim 1 described in any one of -20
Spark plug, wherein the precombustion chamber (5) is communicated by the opening (4) with the combustion chamber of air cylinder of engine.
22. a kind of plug ignition method, which is characterized in that the precombustion chamber with opening is formed in the shell of spark plug, and
The ignitor of spark plug is arranged in the precombustion chamber, the plug ignition method includes: ignitor in precombustion chamber
The electric spark that interior electric discharge generates first will go into the indoor ignited fuel of pre-burning, and the burning gases formed in precombustion chamber can be from opening
Mouth jet stream goes out.
23. plug ignition method according to claim 22, which is characterized in that set on the outer surface of the ignitor
It is equipped with combustion supporting catalytic oxidant layer.
24. a kind of engine ignition method, which is characterized in that the engine ignition method includes according to claim 22 or 23
The plug ignition method, wherein the burning gases formed in the precombustion chamber of spark plug enter after going out from opening jet stream
In the combustion chamber of engine and light the indoor fuel of burning.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810368115.4A CN110391592B (en) | 2018-04-23 | 2018-04-23 | Spark plug, engine, spark plug ignition method and engine ignition method |
| PCT/CN2019/081354 WO2019205908A1 (en) | 2018-04-23 | 2019-04-04 | Spark plug, engine, ignition method for spark plug and ignition method for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810368115.4A CN110391592B (en) | 2018-04-23 | 2018-04-23 | Spark plug, engine, spark plug ignition method and engine ignition method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110391592A true CN110391592A (en) | 2019-10-29 |
| CN110391592B CN110391592B (en) | 2021-07-13 |
Family
ID=68284429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810368115.4A Active CN110391592B (en) | 2018-04-23 | 2018-04-23 | Spark plug, engine, spark plug ignition method and engine ignition method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110391592B (en) |
| WO (1) | WO2019205908A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2601762B (en) | 2020-12-08 | 2023-09-27 | Caterpillar Energy Solutions Gmbh | Pre-combustion chamber assembly with ignition electrodes for an internal combustion engine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2655479Y (en) * | 2003-09-25 | 2004-11-10 | 刘其勇 | Multi-point igniting spark-plug |
| CN2886877Y (en) * | 2005-12-04 | 2007-04-04 | 刘宇 | Tooth ring planar sparking plug for internal combustion gas engine |
| CN101006255A (en) * | 2004-06-24 | 2007-07-25 | 伍德沃德控制器公司 | Pre-chamber spark plug |
| CN201893493U (en) * | 2010-10-22 | 2011-07-06 | 王庆莲 | Spark plug capable of adjusting ignition gap |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1971027A (en) * | 2005-11-23 | 2007-05-30 | 侯卫东 | Spark plug with pre combustion chamber |
| US9391430B2 (en) * | 2013-01-25 | 2016-07-12 | Ford Global Technologies, Llc | Ignition plug and method for the ignition of a fuel-air mixture by means of an ignition plug of said type |
| JP6482684B2 (en) * | 2015-12-24 | 2019-03-13 | 三菱電機株式会社 | Spark plug and ignition system equipped with the same |
| CN207218004U (en) * | 2017-09-21 | 2018-04-10 | 张蝶儿 | A kind of spark plug provided with precombustion chamber |
-
2018
- 2018-04-23 CN CN201810368115.4A patent/CN110391592B/en active Active
-
2019
- 2019-04-04 WO PCT/CN2019/081354 patent/WO2019205908A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2655479Y (en) * | 2003-09-25 | 2004-11-10 | 刘其勇 | Multi-point igniting spark-plug |
| CN101006255A (en) * | 2004-06-24 | 2007-07-25 | 伍德沃德控制器公司 | Pre-chamber spark plug |
| CN2886877Y (en) * | 2005-12-04 | 2007-04-04 | 刘宇 | Tooth ring planar sparking plug for internal combustion gas engine |
| CN201893493U (en) * | 2010-10-22 | 2011-07-06 | 王庆莲 | Spark plug capable of adjusting ignition gap |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019205908A1 (en) | 2019-10-31 |
| CN110391592B (en) | 2021-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4987868A (en) | Spark plug having an encapsulated center firing electrode gap | |
| US20110148274A1 (en) | Spark Plug for a Gas-Operated Internal Combustion Engine | |
| US9331458B2 (en) | Ignition system | |
| US20160305393A1 (en) | Plasma ignition device | |
| JP2012184718A (en) | Non-thermal equilibrium plasma ignition device | |
| WO2016075358A1 (en) | A prechamber assembly adaptable in a cylinder head of an internal combustion engine and a cylinder head | |
| CN104752957A (en) | Series clearance multi-point discharging sparking plug | |
| CN110391592A (en) | Spark plug, engine, plug ignition method and engine ignition method | |
| US20230086672A1 (en) | Combustor | |
| CN109113873B (en) | A kind of igniter working method with double air inlet bias Double-positive-pole structures | |
| CN109209724A (en) | A kind of plasma igniter with double air inlets and Double-positive-pole structure | |
| US20140252941A1 (en) | High efficiency spark plug | |
| CN109340017A (en) | It is a kind of with it is combustion-supporting with igniting double working modes Plasma Assisted Combustion drivers | |
| CN109253018A (en) | The ignition method of double discharge mode plasma igniters with multianode structure | |
| CN206135205U (en) | Single electrode spark plug of formula is led to side | |
| CN109253017A (en) | A kind of plasma igniter working method with double inlet structures | |
| CN209993871U (en) | Gasoline engine spark plug | |
| CN109253019A (en) | A kind of plasma igniter application method with flaring grounding electrode export structure | |
| CN209340039U (en) | A kind of Gas Turbine Generating Units high energy ignition unit | |
| CN2613078Y (en) | Flat ring spark plug for gasoline internal combustion engine | |
| CN105207061A (en) | Multi-pole protruding spark plug with epitaxial center electrode | |
| CN2268326Y (en) | Two-stage multi-kernel environment-protective sparking plug | |
| CN108462032A (en) | Multipoint ignition device and multi-spot combustion engine | |
| CN2610535Y (en) | Stereo-surface sparking plug of gasoline internal-combustion engine | |
| CN109162852A (en) | Double discharge mode plasma igniters with multianode structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee after: CHINA ENERGY INVESTMENT Corp.,Ltd. Patentee after: Beijing low carbon clean energy research institute Address before: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee before: CHINA ENERGY INVESTMENT Corp.,Ltd. Patentee before: Beijing low carbon clean energy research institute |