CN205349593U - Multipolar high -frequency discharge's elasticity punctures ignition system - Google Patents

Abstract

The utility model discloses an ignition system, including primary winding and secondary's ignition coil, secondary has provides highly compressed terminal. The electrode structure of some firearm includes first and second high voltage electrode with secondary's end -on coupling. The point firearm still includes at least one telluric electricity field. Be equipped with a spark gap between a high voltage electrode and at least one telluric electricity field, be equipped with the 2nd spark gap between the 2nd high voltage electrode and at least one telluric electricity field. First electric capacity is established ties and is set up between a high voltage electrode and secondary's terminal, and the series connection of second electric capacity sets up between the 2nd high voltage electrode and ignition coil's secondary's terminal. Ignition system includes the drive module with primary winding's end -on coupling for driving -point live wire circle. The utility model has the advantages that can use single ignition coil to realize forming a plurality of sparks in once ignition incident, simultaneous ignition instantaneous power will show and be higher than traditional ignition method, be favorable to increasing at the gas mixture thin or by the success rate of igniteing under the operating mode of diluting, improve the job stabilization nature of engine under limiting condition.

Description

The elastic perforation ignition system of multipole high-frequency discharge

Technical field

This utility model relates to spark ignition system, particularly relates to the elastic perforation ignition system and method for a kind of multipole high-frequency discharge being capable of stable ignition under the gas in the jar environment of thin combustion mixture or waste gas recirculation.

Background technology

In spark ignition system, lighter, for instance spark plug, for lighting a fire to the air and fuel mixture in combustion zone.It is known that by improving air-fuel ratio, or improve ER EGR Rate, dilute combustion mixture, it is possible to obtain more high compression ratio and engine load, thus realization more cleaning, more effective burning.Certainly, Weak mixture can produce the problem that igniting propagates two aspects with flame, it is necessary to uses incendiary source to assure success and lights a fire and smooth combustion.A kind of strategy is to strengthen spark discharge power by capacitive discharge, and this method is comparatively effective to producing stable fiery core in Weak mixture.Another kind of strategy relates to the fiery core producing multiple spatial distribution in combustion zone, and this strategy has certain application prospect in thin or dilute gas mixture.

But, existing spark plug can not be adapted well in thin and/dilution combustion mixture.It is known that existing spark plug discharges to realize igniting to combustion mixture in cylinder by spark plug gap.Spark discharge is undertaken by the shortest or lowest impedance path, and the spark plug therefore only having single central high pressure electrode at present can be only capable of producing single flame path in discharge process.Although the spark plug of single central high pressure electrode can have multiple ground electrode, and forms multiple virtual spark gap, but spark plug only can produce unique spark by lowest impedance gap in once igniting.Therefore, existing spark plug can not produce the fiery core of multiple spatial distribution in single discharge process.

Fig. 1 is the ignition system 100 in prior art based on existing spark plug.Ignition coil 102 has armature winding 104 and secondary windings 106, by driving module 108 to drive, provides high voltage for spark plug 110.When the voltage provided is sufficiently high, cause the combustion mixture dielectric breakdown in gap 112 between electrode 114 and 116, form spark.Fig. 1 is the equivalent circuit diagram of spark plug 110.Due to the capacitive character ceramics insulator of spark plug 110, between central electrode 114 and cylinder metal-back ground electrode 116, define the parasitic capacitance 118 in parallel with spark gap 112.Parasitic capacitance 118 is at tens picofarad range, although electric capacity is only small, but extremely important for initial spark-over process, puncture energy because it providing.Also show internal resistance 120 in Fig. 1, it embeds spark plug 110, limits spark current and transient state ringing noise in ignition process.

Fig. 2 illustrate the spark discharge of Fig. 1 ignition system voltage curve (on) and current curve diagram (under).Spark discharge process is punctured by high-tension electricity starts, and in Fig. 2 shown in high electric pulse, and is maintained by relatively low pressure glow discharge process.Avalanche breakdown process will be located in the air/fuel mixture ionizing of the spark gap 112 in Fig. 1 between electrode 114 and 116, and then makes the medium in spark gap 112 start conduction.Breakdown voltage depends on the gas property of clearance distance and medium, for instance density, temperature and molecular structure.Such as, Media density is more high, it is desirable to breakdown voltage is more high.Breakdown process required time is nanosecond rank, but owing to high pressure has very high dash current.Therefore the transient state electrical power of breakdown process is high, but due to the short persistent period thus gross energy is relatively low.Discharge energy in avalanche process or following closely comes parasitic capacitance 118 from childhood, it before breakdown process by high-voltage charging.After puncturing, the conductive channel between electrode 114 and 116 causes voltage to drop to only several hectovolts, and this enough maintains light emitting discharge.

It is apparent that in the ignition system of Fig. 1, spark energy is mainly at relatively longer glow discharge stage discharge.It is well known, however, that result of study show high power breakdown process for initiate and maintain burning more effective.Therefore, relatively based on the ignition system of existing spark plug, it is provided that puncturing energy and/or puncturing spark ignition system and the correlation technique of persistent period of a kind of enhancing, there is practical significance.

Utility model content

A kind of technical problem to be solved in the utility model is to provide for the elastic perforation ignition system of a kind of multipole high-frequency discharge realizing being formed multiple spark in an ignition event.

In order to solve above technical problem, this utility model provides a kind of ignition system, including: having the ignition coil of armature winding and secondary windings, secondary windings has the terminal providing high-voltage signal；There is the lighter of electrode structure, described electrode structure includes the first high-field electrode that the terminal with secondary windings couples, the second high-field electrode coupled with the terminal of secondary windings, with at least one ground electrode, described electrode structure is provided with the first spark gap between the first high-field electrode and at least one ground electrode described, and is provided with the second spark gap between the second high-field electrode and at least one ground electrode described；First electric capacity, is connected between the terminal of secondary windings of the first high-field electrode and ignition coil, and the second electric capacity, is connected between the terminal of secondary windings of the second high-field electrode and ignition coil；And the driving module for drive ignition coil is coupled with the terminal of armature winding.

This utility model additionally provides a kind of circuit for ignition system, and ignition system includes: have the ignition coil of armature winding and secondary windings, and secondary windings has the terminal providing high-voltage signal；Electrode structure, including the first high-field electrode coupled with the terminal of secondary windings, the second high-field electrode coupled with the terminal of secondary windings, and at least one ground electrode；And the driving module for drive ignition coil is coupled with the terminal of armature winding, wherein, electrode structure is provided with the first spark gap between the first high-field electrode and at least one ground electrode described, and it is provided with the second spark gap between the second high-field electrode and at least one ground electrode described, circuit includes: be connected on the first high-field electrode and ignition coil secondary windings terminal between the first electric capacity, and be connected on the second high-field electrode and ignition coil secondary windings terminal between the second electric capacity, and it is located at the first resistance between the first high-field electrode and the first electric capacity, and the second resistance being located between the second high-field electrode and the second electric capacity.

This utility model additionally provides a kind of lighter for ignition system, including: the supporter that electrically insulating material makes；At least one ground electrode supported by supporter；At least two high-field electrode, multiple high-field electrodes are supported by supporter, and make its mutually insulated, simultaneously with at least one grounding electrode insulation described.Each high-field electrode of described at least two high-field electrode has and is positioned at trigger spark and forms the first end that first distal process from supporter of one end goes out, and each high-field electrode of described at least two high-field electrode has the second end being included in electrically insulating material relative to described first end；Secondary terminal, has the second distal process from described supporter and goes out the first end of the terminal for junction point fire coil, and has and embed in described electrically insulating material relative to described first end and second end relative with the second end of described at least two high-field electrode；At least one is included in the insulating part in described electrically insulating material, and at least one insulating part described is located between the second end of described secondary terminal and the second end of described at least two high-field electrode.

Superior effect of the present utility model is in that: a single point fire coil can be used to realize forming multiple spark in an ignition event, ignition transient power will be significantly higher than that tradition sparking mode simultaneously, be conducive to increasing the success rate of operating mode down-firing that is thin at gaseous mixture or that be diluted, improve electromotor job stability under limiting condition.

Accompanying drawing explanation

The Figure of description constituting the part of the application is used for providing being further appreciated by of the present utility model, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:

Fig. 1 is the simplification figure of prior art ignition system；

Fig. 2 be the spark discharge of the ignition system of Fig. 1 voltage curve (on) and current curve diagram (under)；

Fig. 3 is the elastic perforation ignition circuit system simplification figure with the tandem high pressure electric capacity being located between ignition coil and spark plug according to this utility model embodiment one；

Fig. 4 be Fig. 3 elastic perforation ignition system V place (on) voltage curve of the spark discharge that records, V1 place (in) voltage curve of spark discharge that records and current curve diagram (under)；

Fig. 5 is the circuit reduction figure of the elastic perforation ignition system with multiple spark gaps according to this utility model embodiment two；

Fig. 6 be the ignition system operation of Fig. 5 when " Mode A " V place (on), V1 place (in) and V2 place (under) voltage curve of spark discharge that records；

Fig. 7 be the ignition system operation of Fig. 5 when " Mode B " V place (on), V1 place (in) and V2 place (under) voltage curve of spark discharge that records；

Fig. 8 be the ignition system operation of Fig. 5 when " pattern C ", V place (on) and V1 place (in) voltage curve of spark discharge that records, and gap 1 place (under) current curve diagram；

Fig. 9 be the ignition system operation of Fig. 5 when " pattern C ", V1 place (on) and the voltage curve of spark discharge that records V2 place (under) (under)；

Figure 10 is the first replacing structure of many spark gaps elasticity perforation ignition system；

Figure 11 is the second replacing structure of many spark gaps elasticity perforation ignition system；

Figure 12 is the 3rd replacing structure of many spark gaps elasticity perforation ignition system；

Figure 13 is the 4th replacing structure of many spark gaps elasticity perforation ignition system；

Figure 14 is the 5th replacing structure of many spark gaps elasticity perforation ignition system；

Figure 15 is the multi-ignition device with embedded series capacitance；

Figure 16 is another kind of with the multi-ignition device embedding series capacitance.

Detailed description of the invention

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that this utility model can be defined by the claims and cover is implemented.

Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.

Fig. 3 illustrates the elastic perforation ignition system 300 of the tandem high pressure electric capacity 302 being located between ignition coil 102 and spark plug 110 according to this utility model embodiment one.Resistance 120 is as demand limiter effect；It does not fundamentally change the operation principle of ignition system 300.Therefore in the following discussion, for brevity, resistance 120 is left in the basket.

As ignored spark gap 112, ignition coil secondary winding 106 and electric capacity 302 and 118 collectively form series LC oscillating circuit.So, if spark gap 112 keeps "off" (namely not puncturing generation), energized circuit will vibrate, until energy dissipation is on resistive cable 304 and spark plug resistor 120.When not forming spark, the voltage (V1) after series capacitance 302 follows voltage (V) vibration before electric capacity 302, but has certain Phase delay.But, when spark is formed in spark gap 112, due to spark-over, voltage (V1) will show different.

Fig. 4 be Fig. 3 elastic perforation ignition system V place (on) the spark discharge voltage curve chart that records, V1 place (in) the spark discharge voltage curve chart that records and I1 place (under) current curve diagram that records.Before breakdown, all similar increase of V and V1.Series capacitance 302 and parasitic capacitance 118 are charged by inducer (ignition system secondary windings 106).When V1 reaches enough to puncture in the medium in gap 112, V1 is just reduced to suddenly sparking voltage, and spark gap 112 starts conduction.Electric capacity 302 is only charged by inducer (ignition system secondary windings 106) subsequently.It is stored in the energy in parasitic capacitance 118 to be discharged by spark gap 112 when puncturing.Since parasitic capacitance 118 is comparatively small, although circuit downstream loop becomes flame path from parasitic capacitance 118, but the distribution of the integral oscillation of V does not change.But the decline on the V place voltage curve shown in Fig. 4 is visible.First 1/4(rising V due to vibration), spark current is maintained by electric capacity 302.When oscillating voltage V reaches peak value, electric current becomes 0, and then spark terminates, and spark gap 112 backs off because lacking electric current supply.

At second 1/4 of vibration, when oscillating voltage V starts to reduce, electric current changes direction.Now electric capacity 302 and parasitic capacitance 118 start coil 102 is charged, and electric current flow back into inducer (secondary windings 106).Spark gap 112 is now off-state, and electric current flows through parasitic capacitance 118 and sets up voltage.Due to the change of the sense of current, the polarity of voltage in parasitic capacitance 118 also changes therewith.When voltage reaches breakdown voltage, gap 112 starts again at conduction, and local electric loop second time is switched to flame path from parasitic capacitance 118.At second 1/4 of vibration, overall current increases, and voltage reduces.But, in practice, because electric current is low relative to the first spark, the second spark is potentially unstable when starting, but because being stored in the energy in parasitic capacitance 118, it is higher that second time punctures energy.

Elastic perforation ignition system 300 is as follows with the difference of existing ignition system 100.In elastic perforation ignition system 300, secondary coil voltage vibration separates with spark discharge, causes so-called " elasticity punctures ", it is meant that spark-over is elastic for coil windings.Additionally, the elastic each ignition event of perforation ignition system 300 produces more than one spark, each spark is from electrical breakdown.The amplitude of secondary oscillation and cycle are by encouraging recovery (driven by ignition coil and control) and integral capacitor to determine.Resistance 120 controls spark current.The delay of vibration is because the energy dissipation of the resistance element of spark discharge and ignition system.Generally, the first half in cycle completes the generation of spark.The capacitance increasing series capacitance 302 can make rate of voltage rise slow down.

Fig. 5 illustrates the elastic perforation ignition system 500 with multiple spark gaps of this utility model embodiment two, including having the first spark gap 112 formed between electrode 114 and 116 and the lighter 502 of the formation the second spark gap 504 between electrode 506 and 508.First parasitic capacitance 118 is in parallel with spark gap 112, is formed between electrode 114 and 116, and the second parasitic capacitance 510 is in parallel with spark gap 504, is formed between electrode 506 and 508.Each spark gap 112 and 504 is by the secondary terminal of series capacitance 302 and 512 junction point fire coil 102 respectively.The symbol of each spark gap circuit loop is identical with implication shown in Fig. 1, and with the index of the numeral (i.e. V1/V2 and I1/I2) representing spark gap order.

As shown in Figure 5, it is necessary to when considering without series capacitance 302 and 512, directly being coupled with ignition coil 102 by multi-ignition device 502, how about ignition system 500 works.In this structure, 112 or there is in 504 the spark gap of lowest impedance can produce reliable spark discharge.This is because the difference between spark gap 112 and 504 can cause the breakdown voltage that two spark gaps 112 and 504 are different.So, 112 or in 504, have the spark gap of lowest impedance first to puncture, ignition coil voltage being pulled down to sparking voltage, puncturing at other spark gap 112 and 504 thus stoping.

Series capacitance 302 and 512 makes the difference between spark gap 112 and 504 minimize.When background gas pressure is relatively low, the requirement of required breakdown voltage is relatively low, and spark-over is likely to simultaneously occur at spark gap 112 and 504, because the voltage set up between two gaps before puncturing is equal.When spark gap 112 and 504, one of them punctures, because parasitic capacitance 118 or 512, high pressure also can maintain the very short time, punctures thus allowing other spark gap 112 or 504 to obtain.But, electric current below is only capable of being propagated by lowest impedance spark gap, and therefore, only has a spark gap and form continuously spark reliably after flame kernel punctures.Even if electrical breakdown establishes discharge channel, the spark that other spark gap produces can not maintain, because the energy that punctures on other spark gap is provided by the parasitic capacitance 118 or 510 of other spark gap.Generally, the short and little breakdown channel on other spark gap forms fire core.

On the other hand, needing higher breakdown voltage in high air tightness situation, electric current improves along with the raising of voltage.In this case, the second spark gap can not be formed when first time punctures generation at once puncture.Therefore, in high air tightness situation, occur non-normally low in the breakdown probability of many spark gaps, and generally, be only capable of producing a spark in a spark gap.

As it is shown in figure 5, series capacitance 302 and 512 is arranged between lighter 502 and coil 102, puncturing for ignition coil 102 of each spark gap 112 and 504 is elastic.Therefore, when a spark gap has occurred and that perforation ignition, another gap still can be set up enough voltage and be formed and puncture, so that the igniting of each spark gap is independent.

According to the difference between energy supply, spark gap and electric capacity and internal resistance, described below is three kinds of operator schemes of elastic perforation ignition system 500.

Mode A, as shown in Figure 6:

When elastic perforation ignition system 500 works in mode, ignition coil provides enough energy, and the difference between spark gap and between electric capacity is less.Alternatively, internal resistance can select higher resistance value, is used for limiting the electric current of each spark discharge, and therefore the power of each spark discharge of each spark gap is relatively low.Compared with integral energy supply, the energy punctured is insignificant, and puncturing of spark gap does not significantly change integral oscillation.

When elastic perforation ignition system 500 works in mode, puncturing of each spark gap almost occurs simultaneously.After puncturing, breakdown current is distributed in each spark gap almost evenly, and its discharge mode is as shown in Figure 4.Fig. 6 show the elastic perforation ignition system 500 as Fig. 5 when " Mode A " V1 place (on) voltage curve of the spark discharge that records, V1 place (in) voltage curve of spark discharge that records, and V2 place (under) voltage curve of spark discharge that records.

Mode B, as shown in Figure 7:

When elastic perforation ignition system 500 works in modeb, the difference between spark gap and between electric capacity is relatively low, but punctures energy and occupy larger proportion compared with integral energy supply.Puncturing of spark gap can change integral oscillation.Internal resistance can be selected for relatively low resistance value, and therefore the electric current of each spark discharge is relatively high.The power of each spark discharge on each spark gap is of a relatively high.

When elastic perforation ignition system 500 works in modeb, puncturing of each spark gap almost occurs simultaneously.After puncturing, electric current is of a relatively high, and is distributed in each spark gap almost evenly.But, due to the power that each spark is relatively high, the spark discharge duration is comparatively of short duration.Therefore, spark terminates after the persistent period one period short.Along with energy accumulation, electric capacity is recharged by coil.When spark gap returns to breakdown conditions, electric discharge occurs again.Within any one 1/4 cycle of oscillation, the electric discharge on any spark gap is all interrupted and discontinuous sparking.The persistent period of each spark depends on the breakdown voltage of rate of voltage rise and requirement.Fig. 7 show when the elastic perforation ignition system 500 of Fig. 5 is operated in " Mode B " V place (on) voltage curve of the spark discharge that records, V1 place (in) voltage curve of spark discharge that records, and V2 place (under) voltage curve of spark discharge that records.

Pattern C, as shown in Figure 8:

When elastic perforation ignition system 500 works in mode c, between spark gap and and electric capacity between difference higher, and puncture energy and occupy larger proportion compared with integral energy supply.Puncturing of spark gap can change integral oscillation.Internal resistance 120 and 514 can be selected for relatively low resistance, and therefore the electric current of each spark discharge is relatively high.The power of each spark discharge of each spark gap is relatively high.

When the elastic perforation ignition system 500 of Fig. 5 works in mode c, the spark-over of each spark gap will not occur in the same time.After puncturing, current unevenness is distributed in each spark gap evenly.Interaction between multiple spark gaps is probably effectively, thus providing a kind of new mulitple ignition mechanism.Fig. 8 and 9 show voltage curve and the current curve diagram of the spark discharge that the elasticity for multi-ignition device punctures.As shown in Figure 6 and shown in Fig. 4, each spark gap puncture the unexpected decline that will cause oscillating voltage (V).Being delivered to spark gap when voltage declines, interference can terminate ongoing igniting.

Fig. 9 is the Spike train of two spark gaps, and namely a spark gap is lighted a fire, and another spark gap is ready for puncturing.The igniting puncturing another spark gap of termination of one spark gap.The size of spark gap is similar, but the electric capacity in each spark gap loop is different.Originally, two spark gaps almost can puncture simultaneously, because requiring similar breakdown voltage at each spark gap.Due to the difference of electric capacity, the persistent period of each spark is different.More particularly, there is more high capacitance or more low-resistance spark gap the spark of longer duration can occur.If difference is from the change of spark gap, the breakdown voltage order required according to each spark gap is occurred by the first spark-over.After puncturing for the first time, the breakdown voltage that the persistent period of each spark is required by rate of voltage rise and spark gap determines.Puncturing that order occurs can terminate spark gap, and the rate of voltage rise in prebreakdown gap of slowing down.

Because the Multi-parameter Combined Tool of dynamically change and the ignition system of spark discharge, discharge mode can switch between aforesaid basic model.Such as, electric discharge can from Mode A, but after Mode A dissipates some energy, spark discharge can be switched to Mode B or even pattern C.It practice, the difference of each spark gap is inevitable.Such as, due to severe cylinder environment, spark gap is probably due to occur thermally and chemically aging, and produces change.For the electromotor adopting stratified charge charge in cylinder, the difference of the medium character between each spark gap will be an obvious problem.Further, the carbon laydown on spark plug also can cause the impedance variation of spark gap.Elastic perforation ignition system discharge pattern C is possible not only to the difference that tolerance is above-mentioned, and these differences can be utilized to bring certain advantage for ignition process.

Based on identical operation principle, it is envisaged that elastic perforation ignition system has multiple different structure.Figure 10-14 shows several suitable structure and infinite embodiment.

Figure 10 shows the elastic perforation ignition system structure being similar to that Fig. 5 shows, but extra electric capacity 1002 and 1004 is in parallel with spark gap 112 and 504 respectively.What the structure that Figure 10 shows added each spark gap 112 and 504 punctures energy.Electric capacity 1002 and 1004 can adopt different capacitances.

In the structure that Figure 11 shows, extra electric capacity 1002 and 1004 is in parallel with secondary ignition coil.The rate of climb of the structure control voltage that Figure 11 shows, and balance integral oscillation.

In the structure that Figure 12 shows, a spark gap 112 is connected to the ignition coil 102 in Fig. 1 existing mode described.Another spark gap 504 is by series capacitance 512 junction point fire coil 102.Spark gap 112 be sized larger than gap 504；Therefore spark gap 504 first punctures, and produces a short spark.It follows that the voltage of ignition coil increases, until spark gap 112 punctures, cause the voltage of ignition coil to drop to the sparking voltage of spark gap 112, and terminate the spark in gap 504.Can realize producing traditional spark and short pulse duration disruptive spark by a spark accumulation of energy event in conjunction with multi-electrode electric discharge in this way simultaneously.

Figure 13 shows the structure being similar to that Figure 12 shows, i.e. the size being sized larger than spark gap 504 of spark gap 112, but extra electric capacity 1302 is in parallel with spark gap 504, increases and punctures energy.

Figure 14 shows the structure being similar to that Figure 12 shows, but extra electric capacity 1402 is connected between electrode 114 and 506.The purpose of electric capacity 1402 is to increase the interaction between spark gap 112 and 504.Work process is described below.Before any on spark gap punctures generation, owing to the balanced voltage on two spark gaps 112 and 504 is set up, electric capacity 1402 does not charge.If first punctured at spark gap 112, then electric capacity 1402 will be charged by electric capacity 512, the electromotive force between electric capacity 512 and resistance 514 by drop-down, 502 puncture further delay.It follows that when puncturing generation at spark gap 504, electric capacity 1402 will release energy to spark gap 504, and what increase spark gap 504 punctures energy.

Such as Fig. 5 and Figure 10-14, in order to produce the spark of different energy and persistent period between each spark gap, in ignition system, the capacitance of each electric capacity and/or the resistance value of each resistance can preset by experiment.In this way, ignition system can be designed and select to adapt to different needs.The capacitance of series capacitance controls the persistent period of each spark-over, it is suppressed that influencing each other between spark gap.The capacitance being parallel to each spark gap electric capacity controls the energy of each spark-over.Control high-voltage oscillation amplitude and cycle with the capacitance of ignition coil secondary winding parallel electric capacity, thus control the cycle of overall spark duration.The resistance value of the resistance being coupling between series capacitance and spark gap in each spark gap loop controls to follow the electric current of the glow discharging process of each spark discharge every time punctured.

Figure 10-14 shows the various ways and the various structures that series capacitance are coupled to system 300 and 500.Such as, series capacitance can be embedded in lighter, or is embedded in cable 304, or is incorporated to by the integrated capacitor module adapted between ignition coil and lighter.

Figure 15 shows the embodiment of a multi-ignition device 1500 with embedding series capacitor 1502.Lighter 1500 includes the secondary terminal 1504 of secondary windings 106 terminal for electrode 1506 and 1508 being connected to ignition coil 102.Insulator 1510 electrodes 1506 and 1508 electrically insulated from one another, and with metal-back ground electrode 1512 electric insulation.

Figure 15 only show two electrodes, but, the quantity of electrode can be two or three or four or more, depends on actually used and needs spark energy.

Figure 16 shows the embodiment of another multi-ignition device 1600 with embedding series capacitance.Lighter 1600 includes a secondary terminal 1602, and it act as the terminal of the secondary windings 106 electrode 1604 and 1606 being connected to ignition coil 102.Insulator 1608 electrodes 1604 and 1606 electrically insulated from one another, and with metal-back ground electrode 1610 electric insulation.Insulating part 1612 can be formed higher than the material of aluminium oxide by dielectric constant, for instance strontium titanates, barium strontium titanate, CaCu 3 Ti 4 O.The contact of electrode and insulant is crucial for forming electric capacity.Therefore, thin conductive layer 1614 is overlying on insulating part 1612 surface to strengthen contact.Electric insulation between the conductive layer 1614 of each electrode.Resistance 1616 embeds lighter 1600, between secondary terminal 1602 and the conductive layer 1618 being overlying on insulating part 1612, to suppress electricity ringing tone and to stop distributing of electromagnetic interference noise.In lighter 1600, an insulating part 1612 shared by multiple sparking electrodes 1604 and 1606.By separated contact surfaces 1614, independent electric capacity is formed at each electrode 1604 and 1606.

Many sparks strategy by driving module to control, repeatedly point of excitation fire coil in one burn cycle of electromotor, add and puncture number of times and overall spark duration.This method can be used for driving single spark plug of multiple separation, regardless of spark plug type (resistor or non-resistive device), is installed in a cylinder or multiple cylinder.By using an ignition coil and electrical power to drive module, spark can be distributed in different spark plugs simultaneously, and compared with arranging with traditional spark plug, this system needs less integral energy.

To driving describing and traditional single spark ignition system approximation of the module method of operation in the application.But, ignition coil and driving module also can be provided under high-frequency resonant mode and work, it is possible to produces multiple spark discharge continuously to multiple spark gaps.

The foregoing is only preferred embodiments of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of making, equivalent replacement, improvement etc., should be included within protection domain of the present utility model.

Claims (17)

1. an ignition system, including:

Having the ignition coil of armature winding and secondary windings, secondary windings has the terminal providing high-voltage signal；

Having the lighter of electrode structure, described electrode structure includes:

The first high-field electrode coupled with the terminal of secondary windings；

The second high-field electrode coupled with the terminal of secondary windings；With

At least one ground electrode,

Described electrode structure is provided with the first spark gap between described first high-field electrode and at least one ground electrode described, and is provided with the second spark gap between described second high-field electrode and at least one ground electrode described；

First electric capacity, is connected between the terminal of secondary windings of described first high-field electrode and described ignition coil, and the second electric capacity, is connected between the terminal of secondary windings of described second high-field electrode and described ignition coil；And

Drive module, couple with the terminal of described armature winding, for drive ignition coil.

2. ignition system according to claim 1, it is characterised in that: include the first resistance being arranged between described first high-field electrode and described first electric capacity and the second resistance being arranged between described second high-field electrode and described second electric capacity.

3. ignition system according to claim 1, it is characterised in that: include threeth electric capacity in parallel with the first spark gap and fourth electric capacity in parallel with the second spark gap.

4. ignition system according to claim 3, it is characterised in that: include the 5th electric capacity with ignition coil secondary winding parallel, and with the 6th electric capacity of ignition coil secondary winding parallel.

5. ignition system according to claim 4, it is characterised in that: include the 7th electric capacity being arranged between described first high-field electrode and described second high-field electrode.

6. ignition system according to claim 1, it is characterized in that: include electrically insulating material, for described first electrode and described second electrode and at least one grounding electrode insulation described are supported mutually, and for by described first high-field electrode and described second high-field electrode electrically insulated from one another and the electric insulation with at least one ground electrode described.

7. the circuit for ignition system, described ignition system includes the ignition coil of armature winding and secondary windings, secondary windings has the terminal providing high-voltage signal, electrode structure, including the first high-field electrode coupled with the terminal of secondary windings, the second high-field electrode coupled with the terminal of secondary windings, with at least one ground electrode, and for drive ignition coil, the driving module coupled with the terminal of armature winding, wherein, described electrode structure is provided with the first spark gap between the first high-field electrode and at least one ground electrode described, and it is provided with the second spark gap between the second high-field electrode and at least one ground electrode described, described circuit includes:

Be connected on described first high-field electrode and described ignition coil secondary windings terminal between the first electric capacity；Be connected on described second high-field electrode and described ignition coil secondary windings terminal between the second electric capacity；And

It is arranged on the first resistance between described first high-field electrode and the first electric capacity and the second resistance being arranged between described second high-field electrode and the second electric capacity.

8. circuit according to claim 7, it is characterised in that: include threeth electric capacity in parallel with the first spark gap and fourth electric capacity in parallel with the second spark gap.

9. circuit according to claim 8, it is characterised in that include the 5th electric capacity with ignition coil secondary winding parallel, and with the 6th electric capacity of ignition coil secondary winding parallel.

10. circuit according to claim 9, it is characterised in that include the 7th electric capacity being arranged between described first high-field electrode and described second high-field electrode.

11. for a lighter for ignition system, including:

The supporter that electrically insulating material makes；

At least one ground electrode supported by described supporter；

At least two high-field electrode, multiple high-field electrodes are supported by supporter mutually, and make its mutually insulated, simultaneously with at least one grounding electrode insulation described, each high-field electrode of described at least two high-field electrode has and is positioned at trigger spark and forms the first end that first distal process from supporter of one end goes out, and each high-field electrode of described at least two high-field electrode has the second end being included in described electrically insulating material relative to described first end；

Secondary terminal, has the second distal process from supporter and goes out the first end of the terminal for junction point fire coil, and has and embed in electrically insulating material relative to described first end and second end relative with the second end of described at least two high-field electrode；And

At least one is included in the insulating part in described electrically insulating material, and at least one insulating part described is located between the second end of described secondary terminal and the second end of described at least two high-field electrode.

12. lighter according to claim 11, it is characterized in that, including the first conductive layer between the second end and the first surface of at least one insulating part described of described secondary terminal, and the second conductive layer between the second end of said two high-field electrode and the second surface of at least one insulating part described.

13. lighter according to claim 12, it is characterized in that, described second conductive layer includes the Part I between second end of first of the second surface of at least one insulating part described and said two high-field electrode, and the Part II between second end of second of the second surface of at least one insulating part described and said two high-field electrode, described Part I and described Part II electric insulation.

14. lighter according to claim 13, it is characterized in that, at least one insulating part described includes the first insulating part between second end of first of the second end of described secondary terminal and said two high-field electrode, and the second insulating part between second end of second of the second end of described secondary terminal and said two high-field electrode.

15. lighter according to claim 11, it is characterised in that at least one insulating part described is higher than the material manufacture of aluminium oxide dielectric constant by dielectric constant.

16. lighter according to claim 15, it is characterised in that any one in strontium titanates, barium strontium titanate and CaCu 3 Ti 4 O of described material.

17. lighter according to claim 12, it is characterised in that include and embed described electrically insulating material, resistance between second end and the first conductive layer of secondary terminal.