CN2146066Y - Engine sparking plug - Google Patents

Abstract

The utility model relates to an engine sparking plug. The upper end of the spark plug is a threaded connecting part, and two pieces of bonding iron which are oppositely arranged are upwards extended on the upper end of the spark plug. The interior of the spark plug is provided with a central electrode through an insulator, and the upper end of the central electrode is provided with a cutting slot relative to an interstice between the two pieces of bonding iron. When the high voltage current passes through, the bilateral electrode spark is formed. The other structure of the utility model is that the two pieces of bonding iron are provided with double extending edges, and a cutting slot is arranged on the electrode relative to the interval of the double extending edges. Consequently, the volume of the single electrode is reduced, and the heating speed is increased.

Description

Engine sparking plug

The utility model is a kind of engine spark plug.

The major function of spark plug is in order to produce spark, the air oil mixture that ignition combustion is indoor, the basic structure of spark plug is to be provided with a contre electrode on its body, another electrode (being commonly called as bonding) is welded on its valve jacket, one air-gap is arranged between two electrodes, and during work, high-tension current flows out to contre electrode from voltage divider, skip above-mentioned gap then and produce spark, thereby can give ignition during to top dead-centre at piston compressed mixed vapour.In order to make engine that good performance be arranged, the spark that spark plug produces is essential enough big and energy is long enough, could effectively light the fuel oil mixed steam.If the spark of spark plug is too weak or irregular, then can make unburned mixed steam with toxic emission, not only cause air pollution, and will increase fuel consumption 10%～15%, waste energy, thereby the structure of spark plug must guarantee to be enough to light mixed steam.

Existing spark plug as shown in Figure 1, has a contre electrode 10, and another electrode bonding 20 is extended upward by the top end face of the part 11 that is spirally connected, and is bent to the top of contre electrode 10 end faces 13 then, makes and forms a gap 14 between the two.When high-tension current during to bonding 20, will produce spark by contre electrode 10, the quality of engine performance, one of its key factor are exactly whether this ignition mechanism can produce enough big spark.But existing spark plug is an a kind of monolateral electrode ignition mechanism, the spark of getting usually a little less than, the spark area is less, and is unsatisfactory to the effect of igniting of mixed steam in the combustion chamber.

And, before spark produces, must extend by flame nuclear earlier and form, the structure of above-mentioned existing spark plug, since its flame endorse can be created in Anywhere interelectrode, again because its electrode relative area is bigger, thus must be earlier with the long time to heated by electrodes, so its flame formation speed is slower.

Another shortcoming of existing spark plug is because heating time is long, and flame generates slower, so can relatively form the quenching phenomenon that existing spark plug often has.This quenching is reflected in the shortcoming on the vehicle, with vehicle in the 4000R.P.M(revolutions per minute) situation be example, when each cylinder in four cylinders was 1000R.P.M, it was unignited then to have tens of spark plugs, thereby had oil consumption, shortcoming such as unpowered and efficient difference.

The purpose of this utility model is to provide a kind of engine spark plug, is provided with edged electrode, increases ignition area, thereby lights gaseous mixture effectively, cuts the waste and the discharging of harmful gas.

Another purpose of the present utility model is to provide a kind of engine spark plug, improves electrode structure, dwindles its volume, thereby speeds firing rate, reduces the quenching phenomenon, improves ignition effectiveness.

The basic structure of the utility model spark plug is: spark plug upper end is the part that is spirally connected, its upper end extends upward two bonding that are provided with relatively, its inside one insulator is installed a contre electrode, expose this contre electrode upper end, and the gap opposite position between itself and two bonding is offered a cutting groove, thereby when central electrode passes through high-tension current, form the edged electrode spark.

The utility model also has another kind of version, promptly has two extension edges separately on the bonding, on the contre electrode of this bonding below, offers a cutting groove with the interval opposite position of two extension edges, thereby makes its single electrode volume-diminished, speeds firing rate.

The utility model spark plug has broader and powerful ignition ability, can effectively light fuel oil mixed steam in the combustion chamber, and make burning more complete, and air pollution is significantly reduced; But also improved the disadvantage of existing spark plug because of incomplete combustion incrustation; Because the enhancing of igniting makes igniting of mixed steam rapider and effective, engine is easy to start, and also steady and smooth turns round.Owing to making heated by electrodes produce flame, except that efficient increases, can also prevent that the quenching phenomenon from taking place, thereby can reduce fuel consumption again, possess continuous driving force in the short period.

Below, describe the utility model spark plug in conjunction with the embodiments in detail with reference to accompanying drawing.

Fig. 1 is existing spark plug stereogram.

Fig. 2 is the utility model first embodiment stereogram.

Fig. 3 is the front view of Fig. 2.

Fig. 4 is the three-dimensional cutaway view of Fig. 2.

Fig. 5 is the schematic diagram that first embodiment is installed in the combustion chamber.

Fig. 6 is the stereogram of the utility model second embodiment.

Fig. 7 is the front view of Fig. 6.

Fig. 8 is the partial perspective cutaway view of Fig. 6.

Fig. 9 is the schematic diagram that second embodiment is installed in the combustion chamber.

The utility model spark plug, shown in Fig. 2～4, spark plug upper end is the part 60 that is spirally connected, the contre electrode 62 that its internal insulator central authorities installing one front end exposes; Extend two bonding 64,65 respectively in the upper surface 63 of the part 60 that is spirally connected; Two bonding 64,65 extend upward respectively after the segment length, bend inwards relatively in the top of contre electrode 62 upper surfaces 66 and with its reservation one segment distance.

In the most preferred embodiment of the present utility model, form a gap 67 between the end of two bonding 64,65, below this gap 67,, offer a cutting groove 68, thereby form edged electrode in the relative part of contre electrode 62 end faces 66 with it.

Owing to make the material of bonding, it in factory wide coiling, cut off bending during fabrication more one by one, the advantage of present embodiment structure promptly is need not do any change, be that available this material is made slightly long full slice system bonding, bending refills on the upper surface of being located at the part 60 that is spirally connected then, the gap 67 of two bonding and the cutting groove 68 of contre electrode 62, and available instrument from top to bottom cuts and machines simultaneously.

Referring to Fig. 5, the above-mentioned part 60 that is spirally connected can be connected on the casing wall of combustion chamber 70, when high-tension current passes through, two bonding that separate 64,65 will form the edged electrode igniting with the end face that 62 liang of contre electrodes separate, spark 80 is strengthened and the also increase effectively of its ignition area, can guarantee that the mixed steam in the combustion chamber is lighted really.

Shown in Figure 6 is second embodiment of the present utility model, is provided with a contre electrode 62 equally at the spark plug center, and establishes a bending bonding 600 that extends separately in the top of the part 60 that is spirally connected, and forms another electrode; End face central authorities at contre electrode 62 also offer a cutting groove 68, bonding 600 then forms two Extendible flakes 602,603 separately in its bending part 601 front ends, its shape takes the shape of the letter U substantially, makes the intermediate gaps 604 of two Extendible flakes 602,603 roughly be positioned at the top of above-mentioned cutting groove 68.

Shown in Fig. 7,8, this two Extendible flake 602,603 just can cooperate contre electrode 62 cutting grooves 68 and form edged electrode, can find out that the volume of its monolateral electrode compares with electrode shown in Figure 2, is reduced effectively.

Fig. 9 illustrates embodiment 2 and is installed in state in the combustion chamber 70, and its part 60 that is spirally connected places the default inner bolt hole of chamber wall, and makes its electrode part towards the indoor preparation mixed steam that ignites.When 600 of central electrode 62 and bonding during, will produce spark in the bipolar electrode mode by high-tension current.

Two embodiment of the present utility model all have following advantage: because each unipolar area reduced, thereby can fully heat within a short period of time, can produce flame fast and mixed steam in the ignition combustion chamber 70 by arbitrary limit electrode wherein.Simultaneously, because this igniting only needs the utmost point short time, more can make the generation that reduces the quenching phenomenon in the ignition operation of engine.

Claims (3)

1, a kind of engine spark plug is characterized in that: spark plug upper end is the part 60 that is spirally connected, the contre electrode 62 that its internal insulator central authorities installing one front end exposes; Extend two bonding 64,65 respectively in the upper surface 63 of the part 60 that is spirally connected; Two bonding 64,65 extend upward respectively after the segment length, bend inwards relatively in the top of contre electrode 62 upper surfaces 66 and with its reservation one segment distance; Form a gap 67 between the end of two bonding 64,65, below this gap 67,, offer a cutting groove 68, thereby form edged electrode in the relative part of contre electrode 62 end faces 66 with it.

2, a kind of engine spark plug is characterized in that: be provided with a contre electrode 62 at the spark plug center, and establish a bending bonding 600 that extends separately in the top of the part 60 that is spirally connected, form another electrode; End face central authorities at contre electrode 62 offer a cutting groove 68,600 two Extendible flakes 602,603 that separate in its bending part 601 front ends formation of bonding, make the intermediate gaps 604 of two Extendible flakes 602,603 roughly be positioned at the top of above-mentioned cutting groove 68, thereby form edged electrode.

3, engine spark plug as claimed in claim 2 is characterized in that: two Extendible flakes 602 of described bonding 600 and 603 shape are roughly as U-shaped.

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