CN206558880U - Automobile multi-electrode combustion gas spark plug - Google Patents

Abstract

Automobile multi-electrode combustion gas spark plug, lateral electrode including central electrode and centrally disposed electrode periphery, arcing gap is formed between the firing tip of central electrode and the firing tip of lateral electrode, it is characterised in that the firing tip of described central electrode is that can form the multi-angular structure of many places point discharge.The beneficial effects of the utility model are：The firing tip of central electrode is that can form the multi-angular structure of many places point discharge, i.e. in the firing tip formation many places point discharge of central electrode, increase the igniting reliability of spark plug, the firing tip of lateral electrode is the wedge shape being gradually reduced to center electrode firing tip direction width, the space in arcing gap can be increased, it is to reduce the flame arrest effect of lateral electrode to reduce lateral electrode long position heat-absorbing action, is conducive to the Fast Growth of Initial Stage after Ignition flame, so as to improve arcing performance, increase the service life.

Description

Automobile multi-electrode combustion gas spark plug

Technical field

The utility model is related to automobile multi-electrode combustion gas spark plug, belongs to combustion gas spark plug point technical field.

Background technology

Spark plug is assemblied in internal combustion engine (engine) etc., for igniting to the mixed gas in combustion chamber etc..Generally,

Spark plug possesses：Insulator, with the axis hole extended in the axial direction；Central electrode, is inserted through before axis hole Side；Metal shell, is arranged at the periphery of insulator；Lateral electrode, is fixed on the leading section of metal shell.Also, pass through side electricity The arcing gap formed between the firing tip of pole and the firing tip of central electrode applies high voltage to produce spark discharge, formation pair Mixed gas etc. is ignited.

With developing rapidly for automobile industry, requirements at the higher level are proposed to spark plug, that is, require that high ignition performance is required again Low cost；In order to improve combustion gas plug ignition reliability with increasing the service life, mostly using the fire with multiple lateral electrodes Flower plug product, but existing many side electrode spark plugs add technology difficulty big, and arcing gap accordance is poor, arcing poor performance, electrode Recession rate is fast, and flame arrest effect is high, and central electrode arcing face is great circle cambered surface, it is impossible to form point discharge, igniting can not Lean on；Also using service life of the welding noble metal for extending electrode on electrode, although electrode can extended to a certain degree The service life of firing tip, but have that electrode matrix combustion erosion noble metal comes off, technique difficulty of processing is big, material and production cost are high The problems such as.

Utility model content

The automobile multi-electrode combustion gas spark plug that the utility model is provided, with lighting a fire, reliable, service life length, flame arrest are made With low advantage.

To reach above-mentioned purpose, the technical scheme of use of the present utility model is：Automobile multi-electrode combustion gas spark plug, bag The lateral electrode of central electrode and centrally disposed electrode periphery is included, the shape between the firing tip of central electrode and the firing tip of lateral electrode Into arcing gap, it is characterised in that the firing tip of described central electrode is that can form the multi-angular structure of many places point discharge.

It is preferred that, described multi-angular structure is multiple dashing forward with corner angle in the firing tip surface formation of central electrode Tooth, described lobe is axially arranged along central electrode.

It is preferred that, the quantity of described lobe is 2 ~ 20.

It is preferred that, multiple described lobes are circumferentially arranged in order the multi-angular structure to form gear shape along central electrode.

It is preferred that, the number of described lateral electrode is 3 to 6, the curved sensing central electrode of firing tip of lateral electrode Firing tip.

It is preferred that, the firing tip of described lateral electrode is the wedge shape being gradually reduced to center electrode firing tip direction width Shape.

The beneficial effects of the utility model are：The firing tip of central electrode is that can form the multi-angular knot of many places point discharge Structure, i.e. the firing tip formation many places point discharge in central electrode, increase the igniting reliability of spark plug, the firing tip of lateral electrode For the wedge shape being gradually reduced to center electrode firing tip direction width, the space in arcing gap can be increased, reduce lateral electrode many Remaining part position heat-absorbing action is to reduce the flame arrest effect of lateral electrode, is conducive to the Fast Growth of Initial Stage after Ignition flame, so as to improve jump Fiery performance, increases the service life.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

The structural representation of electrode centered on Fig. 2.

Embodiment

The utility model will be further described by accompanying drawing 1 to 2 and embodiment below.

As illustrated, automobile multi-electrode combustion gas spark plug, including central electrode 1 and the periphery of centrally disposed electrode 1 Lateral electrode 2, forms arcing gap 3 between the firing tip of central electrode 1 and the firing tip of lateral electrode 2, described central electrode 1 Firing tip is that can form the multi-angular structure 11 of many places point discharge.Described multi-angular structure 11 is the point in central electrode 1 Multiple lobes 11.1 with corner angle of tip surfaces formation, described lobe 11.1 is axially arranged along central electrode 1.Described The quantity of lobe 11.1 is 2 ~ 20.Multiple described lobes 11.1 are arranged in order to form gear shape along central electrode 1 is circumferential Multi-angular structure 11.

As can be seen from Figure 1 the firing tip of central electrode 1 has many places corner angle, can form many places point discharge, so that The shaping of the igniting reliability, for convenience multi-angular structure 11 of central electrode is improved, is at center by multi-angular structure setting Multiple lobes 11.1 of the firing tip surface of electrode 1 formation, will in order to further reduce the shaping difficulty of the firing tip of central electrode 1 Multiple lobes 11.1 are arranged in order the multi-angular structure 11 to form gear shape, as shown in Figure 2.Forming many of gear shape During angular structures 11, the firing tip of the central electrode 1 of cylindrical type of the prior art need to only be rolled with cylindrical die roll, will The firing tip of central electrode 1 is rolled into gear shape, and the quantity of lobe 11.1 is 2 ~ 20, you can fully meet different chis The ignition effectiveness demand of the very little firing tip of central electrode 1.

The number of described lateral electrode 2 is 3 to 6, the curved igniting for pointing to central electrode 1 of firing tip of lateral electrode 2 End.The firing tip of described lateral electrode is the wedge shape being gradually reduced to the igniting extreme direction width of central electrode 1.As shown in figure 1, The quantity of lateral electrode 2 is 4, the curved firing tip for pointing to central electrode 1 of firing tip of each lateral electrode 2, in installation side The punching of the firing tip of lateral electrode 2 and wedging process can be sequentially completed before electrode, by by the shape of the firing tip of lateral electrode 2 Wedge shape is improved into the space in arcing gap 3 in increase spark plug reduces lateral electrode long position heat-absorbing action, reduction side electricity The flame arrest effect of pole, is conducive to the Fast Growth of Initial Stage after Ignition flame, increases the spark energy in arcing gap 3, so as to carry High arcing performance, increases the service life.

Advantage of the above-described automobile with multi-electrode combustion gas spark plug is：

1st, the firing tip of central electrode 1 has many places corner angle, can form many places point discharge, so as to improve the point of spark plug Fiery reliability.

2nd, multiple lobes 11.1 are circumferentially arranged in order the multi-angular structure 11 to form gear shape along central electrode 1, with rolling Silk wheel is rolled to center electrode firing tip cylindrical in the prior art can obtain, and shaping is simple and convenient, and cost is low.

3rd, by the improved shape of the firing tip of lateral electrode 2 for wedge shape into, increase spark plug in arcing gap space, reduce Lateral electrode long position heat-absorbing action is to reduce the flame arrest effect of lateral electrode.

4th, the wedge shape molding procedure of the firing tip of lateral electrode 2 is simple, can be with the punching operation of the firing tip of lateral electrode 2 successively Complete.

Completely description is carried out to the technical scheme of the utility model embodiment, it is necessary to which explanation is to be retouched above in association with accompanying drawing The embodiment stated is only a part of embodiment of the utility model.Based on the embodiment in the utility model, the common skill in this area The every other embodiment that art personnel are obtained on the premise of creative work is not made, belongs to the utility model protection Scope.

Claims (6)

1. automobile multi-electrode combustion gas spark plug, including central electrode（1）With centrally disposed electrode（1）The lateral electrode of periphery （2）, in central electrode（1）Firing tip and lateral electrode（2）Firing tip between form arcing gap（3）, it is characterised in that it is described Central electrode（1）Firing tip for the multi-angular structure of many places point discharge can be formed（11）.

2. automobile according to claim 1 multi-electrode combustion gas spark plug, it is characterised in that described multi-angular structure （11）For in central electrode（1）Firing tip surface formation multiple lobes with corner angle（11.1）, described lobe （11.1）Along central electrode（1）It is axially arranged.

3. automobile according to claim 2 multi-electrode combustion gas spark plug, it is characterised in that described lobe（11.1）'s Quantity is 2 ~ 20.

4. automobile according to claim 3 multi-electrode combustion gas spark plug, it is characterised in that multiple described lobes （11.1）Along central electrode（1）Circumferentially it is arranged in order the multi-angular structure to form gear shape（11）.

5. automobile according to claim 1 multi-electrode combustion gas spark plug, it is characterised in that described lateral electrode（2） Number is 3 to 6, lateral electrode（2）The curved sensing central electrode of firing tip（1）Firing tip.

6. automobile according to claim 5 multi-electrode combustion gas spark plug, it is characterised in that the igniting of described lateral electrode Hold as to central electrode（1）The wedge shape that igniting extreme direction width is gradually reduced.