CN201444535U

CN201444535U - Multi-gap energy-saving and environment-friendly spark plug with parallel-series poles

Info

Publication number: CN201444535U
Application number: CN2009200216176U
Authority: CN
Inventors: 席其红
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-23
Filing date: 2009-04-23
Publication date: 2010-04-28
Anticipated expiration: 2019-04-23

Abstract

A multi-gap energy-saving and environment-friendly spark plug with parallel-series poles adopts the structure that two parallel side electrodes maintaining a certain distance are welded on a steel casing, a central electrode and a bridge central electrode are arranged on a porcelain core, the upper ends of the central electrode and the bridge central electrode are exposed outside a porcelain facing, and gaps among all electrodes adopt a serial structure. Due to the adoption of the structure, particularly after the point discharge of exposed parts of the central electrodes taking a square flat shape with edges and corners, arcing over capacity is improved, load on an ignition system is reduced, the gas mixture burning velocity is accelerated, and the service lives of associated components are improved; because all fire produced among electrodes are exposed to the gas mixture directly, the ignition energy loss is reduced, and the burning efficiency of the gas mixture is improved; due to the increment of sparking gaps, no-adjustment gaps are achieved; and because the two central electrodes are square and flat, the cross section is relatively increased, and the service life of the spark plug is prolonged. Therefore, the utility model ensures a sufficient burning of gas mixture, saves fuel, lowers cost, reduces pollution, and improves engine power.

Description

And series electrode multigap energy-saving environmental-friendly spark plug

Technical field

The utility model belongs to the accessory of gasoline or gas internal-combustion engine, especially a kind of and series electrode multigap energy-saving environmental-friendly spark plug.

Technical background

At present both at home and abroad in the spark plug, great majority are single-point " igniting ", and the spark plug of promptly single central electrode structure also has the use multi-gap spark plug.Single central electrode spark plug has only " igniting " point, though it can realize the igniting task, because ignition intensity is weak, poor reliability, causes the interior mixture combustion of cylinder insufficient.Many lateral electrodes spark plug, because a plurality of lateral electrodes are parallel, and each arcing gap can not make impartially fully, can only be from a nearest gap arcing, do not realize the purpose of a plurality of lateral electrodes and a simultaneously continuous arcing of central electrode, promptly real on the arcing performance is the one pole arcing, still has the inadequate defective of the mixture combustion of causing.Also have some multi-gap spark plugs; attempt is provided with a plurality of electrodes in the spark plug ceramic end portion; i.e. a central electrode and a plurality of auxiliary electrode; this too Utopian design; in actual applications, no matter be life-span or performance, not as good as single gap plug; to the analysis of its drawback, in my application and " isosceles triangle multi-pole energy-saving environmental protection spark plug " patent of Granted publication, carried out concrete elaboration.

I apply for also " isosceles triangle multi-pole energy-saving environmental protection spark plug " patent of Granted publication; its patent No. is: ZL200820016309.X; see also Fig. 1; though can realize the function of multi-electrode arcing, but also have that igniting is reliable, sufficient combustion, the saving energy, reduce and pollute and strengthen advantages such as engine power.But, because that central electrode, bridge connected central electrode are is cylindrical, learn according to the conductor tip discharge principle, just relatively increased the discharge difficulty of sparking-plug electrode; Again since two central electrodes of this patent because of being subjected to the restriction of insulating porcelain piece size, use economic material can not do very thickly, along with sparking-plug electrode long-time discharge loss and the ablation that is subjected to high temperature, high pressure mixing gas in cylinder, this patent spark plug has only a lateral electrode in addition, and the effective ignition gap between each electrode increases thereupon relatively.So, influenced the tonality of exempting from of electrode gap in the reliability of this patent plug ignition and the use in varying degrees.

Summary of the invention

Task of the present utility model: be at the above-mentioned shortcoming of isosceles triangle multi-pole energy-saving environmental protection spark plug, a kind of technical scheme of and series electrode multigap energy-saving environmental-friendly spark plug is provided.This scheme is: on the basis of original single-sided electrode, increase a lateral electrode again, become two parallel connections and lateral electrode that keep a determining deviation, concrete central electrode, the setting of bridge connected central electrode and shape, will be respectively first and second, the 3rd, carefully state among the 4th embodiment, central electrode, be the arrangement of similar " bifurcation " font between bridge connected central electrode and two parallel lateral electrodes, make two original discharging gaps become three like this, the real function that realizes the arcing of many gaps, thus improved greatly the reliability of plug ignition and economy and the useful life in the use.

The utlity model has following beneficial effect: the one, improved stability, the reliability of mixture combustion.Described in the first and the 3rd embodiment, because the cylindrical center electrode side of becoming flat, make central electrode discharge position become the point discharge of band corner angle formula, the time that causes gaseous mixture to be ionized shortens relatively, accelerated the burning rate of gaseous mixture, particularly when underload, shorten burning time significantly, the reliability of stability when having improved idle running and the time igniting of running up; And for example described in third and fourth embodiment,, reduced the effect of electrode flame arrest, guaranteed that enough energy light gaseous mixture because lateral electrode has been opened " V " or " U " shape groove.Studies show that this spark plug is compared with common spark plug, the initiation combustion phase will shorten more than 20%, and the main burning phase also can cause the combustion pressure amplitude of variation to reduce with shortening more than the 10-15%.The 2nd, improved ignition ability.Common single central electrode spark plug, when pulse high-voltage produces electric spark in electrode gap after, whole energy are not used to light gaseous mixture, wherein a part of heat is formed the central electrode and the lateral electrode of spark and has taken away, make the temperature and the energy of spark all reduce like this, because the existence of this cooling effect causes the ignition energy of kindling material that electric arc forms to descend, even can be extinguished.The spark that produces between each electrode of the utility model, all be directly to be exposed in the gaseous mixture, in addition the 3rd, among the 4th embodiment, on lateral electrode, opened " V " or " U " shape groove again respectively, kindling material can not appear because of the electrode cooling effect, and extinguished or problem that ignition energy is taken away by electrode, cause the energy of lighting gaseous mixture not increasing the enhancing simultaneously and greatly of arcing gap, no matter be that engine is when with which kind of rotation speed operation particularly running up, can both there be enough energy efficients to light gaseous mixture, thereby make gaseous mixture fully burning in the extremely short time, reduce fuel consumption, reduce exhaust pollution, also more current engine fuel rarefaction Theory of Combustion realizes, provides real, possible and solid material base.Preliminary test is learnt, but the utility model makes the gaseous mixture rarefaction about 15-40%, increases the about 10-25% of power output, reduces the about 10-30% of fuel consumption, and exhaust pollution reduces about 40-70%.The 3rd, improved the utilization ratio that ignition coil and high-voltage line are exported energy.Described in first embodiment, because two central electrodes are by the flat body shape in the cylindric side of changing into, promptly become the point discharge of corner angle formula by the discharge of R arc formula, particularly the 3rd, among the 4th embodiment, on lateral electrode, opened " V " or " U " shape groove again respectively, increased the sharp-pointed discharge edge of lateral electrode and central electrode, like this under the situation that does not increase discharging gap, increase kindling material relatively and formed the space that flame is examined, simultaneously, because of flame nuclear is not that face contacts with lateral electrode, but the digonous some contact of trough rim, further reduce puncture voltage, thereby reduced the load of ignition coil and high-voltage line, prolonged its useful life.Learn that through test the utility model can improve ignition coil, high-voltage line output energy utilization efficiency 15-25%, can reduce the needed puncture voltage of electrode gap more than 10-15%.The 4th, improved the tonality of exempting from gap.Because the bridge connected central electrode is to be sandwiched between two lateral electrodes, but just produced the gap of two arcings between itself and two lateral electrodes, it just can be according to the ablation situation of self and two lateral electrodes like this, seek the shortest sparking distance, about in turn arcing, in itself and two lateral electrode useful life phases, need not adjust the arcing gap fully, reduced user's maintenance cost.The 5th, improved spark plug useful life.Owing to increased a lateral electrode, particularly bridge connected central electrode, be arcing in turn between two lateral electrodes, the electrode relative area increases, thereby has reduced the ablation of electrode, has particularly reduced the ablation of lateral electrode, has prolonged the useful life of spark plug.So the utility model is combustion mixture more fully, save the energy, reduce tail gas pollution, improve engine power.Thereby, realized task of the present utility model effectively.

Description of drawings

Other features and advantages of the utility model will become clearer from the description that provides in conjunction with the accompanying drawings subsequently, among the figure:

Fig. 1 is an isosceles triangle multi-pole energy-saving environmental protection sparking-plug electrode part schematic diagram;

Fig. 2 is the electrode part schematic diagram among first embodiment of the present utility model;

Fig. 3 is the derivation type electrode part schematic diagram among first embodiment Fig. 2 of the present utility model;

Fig. 4 is the electrode part schematic diagram among second embodiment of the present utility model;

Fig. 5 is the derivation type electrode part schematic diagram among second embodiment Fig. 4 of the present utility model;

Fig. 6 is square flat central electrode and " V " shape lateral electrode part schematic diagram among the 3rd embodiment of the present utility model;

Fig. 7 is derivation type side flat central electrode and " V " shape lateral electrode part schematic diagram among the 3rd embodiment Fig. 6 of the present utility model;

Fig. 8 is square flat central electrode and " U " shape lateral electrode part schematic diagram among the 3rd embodiment of the present utility model;

Fig. 9 is derivation type side flat central electrode and " U " shape lateral electrode part schematic diagram among the 3rd embodiment Fig. 8 of the present utility model;

Figure 10 is cylindrical center electrode and " V " shape lateral electrode part schematic diagram among the 4th embodiment of the present utility model;

Figure 11 is derivation type cylindrical center electrode and " V " shape lateral electrode part schematic diagram among the 4th embodiment Figure 10 of the present utility model;

Figure 12 is cylindrical center electrode and " U " shape lateral electrode part schematic diagram among the 4th embodiment of the present utility model;

Figure 13 is derivation type cylindrical center electrode and " U " shape lateral electrode part schematic diagram among the 4th embodiment Figure 12 of the present utility model.

In the accompanying drawings, the 1st, central electrode, the 2nd, the bridge connected central electrode, 3,3 (a), 3 (b) they are lateral electrodes, the 4th, iron-clad, the 5th, porcelain core.

Embodiment

With reference to Fig. 2 and 3, on iron-clad 4, weld two lateral electrodes 3 of bending or hook shape (a), 3 (b) respectively, its discharge ignition end is square or trapezoidal or is the trench digging flute profile that groove is " V " or " U " shape; Position between the center of porcelain core 5 and its edge, central electrode 1 and bridge connected central electrode 2 and upper end respectively are set all are exposed to porcelain facing also for square flat band corner angle formula or tubular, be similar " bifurcation " font spread geometry with lateral electrode 3 (a), 3 (b), bridge connected central electrode 2 is sandwiched in lateral electrode 3 (a), 3 (b) central authorities, details such as specification, the position of concrete each gap length and electrode is provided with need system test to wait to determine.

In first embodiment, with reference to Fig. 2 and 3, because central electrode 1 and bridge connected central electrode 2 upper ends are exposed to the part side of the being flat shape of porcelain facing, its discharge mode is by face of cylinder R arc discharge, the point discharge of the side's of becoming flat shape band corner angle formula causes the energy of arc through gaseous mixture obviously to improve, and this has just realized abundant burning, improve engine power, reduced pollution emission.

For among second, third and the 4th embodiment of the present utility model each, have identical basic function with the parts of first embodiment, all in corresponding accompanying drawing by identical Reference numeral sign, and omit unnecessary description.

With reference to Figure 4 and 5; the also series electrode multigap energy-saving environmental-friendly spark plug and the first embodiment difference according to second embodiment; be that the part that two

central electrodes

1 and 2 upper ends are exposed to porcelain facing is cylindrical; the corresponding reduction of integral manufacturing difficulty of

central electrode

1,2 and present embodiment like this, but it also can correspondingly improve the requirement to ignition system output point ignition voltage.

With reference to Fig. 6 and 7; 8; 9; the also series electrode multigap energy-saving environmental-friendly spark plug and the first embodiment difference according to the 3rd embodiment; be from lateral electrode 3 (a); 3 (b) are with respect to the end or the proximal end of central electrode 2; respectively leave two measure-alike " V " or " U " shape groove; particularly after central electrode 2 side's flats discharge corner angle are ablated gradually; increased lateral electrode 3 (a); the sharp-pointed discharge edge of 3 (b) and central electrode 2; like this under the situation that does not increase discharging gap; increase kindling material relatively and formed the space that flame is examined; simultaneously; because of flame nuclear is not that face contacts with lateral electrode 3 (a) or 3 (b); but the digonous some contact of trough rim; further reduced puncture voltage, reduced the flame arrest effect greatly, guaranteed that electric spark has enough energy and lights gaseous mixture reliably.

With reference to Figure 10 and 11; 12; 13; the also series electrode multigap energy-saving environmental-friendly spark plug and the second embodiment difference according to the 4th embodiment; be from lateral electrode 3 (a); 3 (b) are with respect to the end or the proximal end of central electrode 2; respectively leave two measure-alike " V " or " U " shape groove; particularly because central electrode 2 discharge ends are the cylinder bodily form; the flame nuclear of having guaranteed central electrode 2 is not that face contacts with lateral electrode 3 (a) or 3 (b); but the digonous some contact of trough rim; more increased lateral electrode 3 (a); the amount of edge of the sharp-pointed discharge of 3 (b) and central electrode 2; like this under the situation that does not increase discharging gap; increase kindling material relatively and formed the space that flame is examined; simultaneously; obviously reduced puncture voltage, the effect of electrode flame arrest also will reduce thereupon widely, has guaranteed that the enough energy of having of gaseous mixture are lighted.

Various improvement and distortion all are possible, and not only are confined to the foregoing description.

For example, in the first and second, the 3rd, the 4th embodiment, the discharge position of

central electrode

1,2 and lateral electrode 3 (a), 3 (b), its shape and size can be variform and specification, if help improving gaseous mixture in the cylinder abundant burning, the anti-ablation that helps intensifier electrode and resistance to elevated temperatures, help that

central electrode

1 and 2 is led, heat radiation etc. is just passable.

Thereby; though with respect to specific embodiment of the present utility model; described this also series electrode multigap energy-saving environmental-friendly spark plug, but this is exemplary rather than determinate, and appended claims should be understood according to the wide as far as possible scope that prior art allowed.

The content that the utility model is not described in detail is a known technology.

Claims

1. be used for internal combustion engine and series electrode multigap energy-saving environmental-friendly spark plug; it mainly contains iron-clad, porcelain core, central electrode, bridge connected central electrode and lateral electrode and forms; it is characterized in that on iron-clad, welding respectively two lateral electrodes; position between porcelain core center and its edge; a central electrode and bridge connected central electrode and upper end respectively are set all are exposed to porcelain facing; be similar " bifurcation " font spread geometry between central electrode, bridge connected central electrode and two lateral electrodes, the bridge connected central electrode is sandwiched in two lateral electrode central authorities.

2. in the spark plug as claimed in claim 1, its central electrode and bridge connected central electrode are exposed to the part of porcelain facing, for the side flat bodily form band corner angle formula or be tubular.

3. in the spark plug as claimed in claim 1, be shaped as bending or hook shape after two lateral electrode is welded on the iron-clad, it is square or trapezoidal or the open channels shape that the end is got angry in discharge, and promptly its groove of opening is " V " or " U " shape.