CN103532019A

CN103532019A - Offset electrode 3-time discharging spark plug

Info

Publication number: CN103532019A
Application number: CN201210444366.9A
Authority: CN
Inventors: 曲长春; 李玉生
Original assignee: LUOYANG XINUO ENERGY TECHNOLOGY Co Ltd
Current assignee: LUOYANG XINUO ENERGY TECHNOLOGY Co Ltd
Priority date: 2012-11-09
Filing date: 2012-11-09
Publication date: 2014-01-22

Abstract

An offset electrode 3-time discharging spark plug is disclosed. The invention aims to solve the problems of an existing spark plug that the misfire rate is high and only one flame center is generated during discharging. The technical scheme used to solve the problems and provided by the utility model is characterized in that 3 strip-shaped areas on the top part of the spark plug and the lateral part of one side far away from an offset electrode are sprayed with a conductive ceramic to form conductive bars, the electrode is connected with the conductive bar nearest to the edge, so that a 3-time discharging channel is formed; and the conductive ceramic on the lateral part and a metal housing form a loop. The spark plug can realize a general sparking function; because of the characteristic of the ceramic material and a special shape of the electrode, multiple beams of discharging sparks with a large scope and large intervals can be generated during the discharging; the 3-time discharging is achieved simultaneously, so that the burning speed of a combination gas is accelerated, and explosive power of an engine is increased; and the spark plug is especially suitable for igniting a thin combination gas, and the energy saving effect is obvious.

Description

3 discharge spark plugs of a kind of offest electrode

Technical field

The present invention relates to automotive field, 3 discharge spark plugs of especially a kind of offest electrode.

Background technology

Existing spark plug is generally divided into two kinds of one pole and multipolar systems: the lateral electrode of acyclic type spark plug is longer than central electrode, and just by lateral electrode, blocked from sparking-plug electrode end its region of discharge of looking, because the diameter of the width dimensions of lateral electrode and central electrode is substantially suitable, particularly after entrucking because the spark plug pit in combustion chamber is darker, formed again the situation that is unfavorable for flame propagation.Therefore, fire loss ratio is high, and effectively ignition energy is little, causes engine power to decline, and oil consumption increases.

Its architectural feature of existing multi-gap spark plug is: be a plurality ofly generally three lateral electrode ends and bend towards central electrode simultaneously.For obtaining more uniform discharging gap, the arc centered by central electrode axis is made in generouser lateral electrode end.Although solved the front occlusion issue of discharging gap, block the side that has produced discharge spark, and the real contact area of discharge spark and gaseous mixture is little, igniting effect is still undesirable.In addition, no matter which kind of spark plug center and lateral electrode are metal structure, and it has very strong igniting arc extinguishing effect; Central electrode mostly is single-column shape, can only produce a flame kernel during electric discharge, cannot make the gaseous mixture of homogeneity equivalent give play to best work done usefulness.

Also has a kind of conductivity ceramics inverted arc spark plug, as application number: 200610082216.2 spark plug, although it has utilized conductivity ceramics, effectively electric discharge is only for once, the same situation that is unfavorable for flame propagation that exists, causes fire loss ratio high, and effectively ignition energy is little, cause engine power to decline, the situation that oil consumption increases occurs.

Summary of the invention

For solving existing spark plug, cause the problem that fire loss ratio is high, when electric discharge can only produce a flame kernel, the technical scheme of dealing with problems that the present invention proposes is: at 3 strip regions of spark plug tip and away from the sidepiece spraying conductivity ceramics of offest electrode one side, form bus, electrode is connected with edge bus, form 3 times discharge channel, the conductivity ceramics of sidepiece and metal shell form loop simultaneously.

The invention has the beneficial effects as follows: not only can realize general ignition function, and due to the conduction characteristic of ceramic material and the special shape of electrode, while making to discharge, can produce on a large scale, large spacing multi beam discharge spark, and 3 electric discharges simultaneously, therefore mixture combustion speed is accelerated, engine flare power increases, and is specially adapted to light rarer gaseous mixture, energy-saving effect is obvious.

Accompanying drawing explanation

Fig. 1 is offest electrode spark plug front view; Fig. 2 is offest electrode spark plug vertical view; Fig. 3 is that A-A is to cutaway view; Fig. 4 is partial enlarged drawing; Fig. 5 is spark plug tip cutaway view; Fig. 6 is spark plug bottom, cross-sectional view.

Wherein, 1. electrode; 2. bus 1; 3. insulating ceramics; 4. bus 2; 5. bus 3; 6. metal shell; 7. high-temperature insulating glue; 8. conducting resinl; 9. main body sparking-plug electrode; 10. sidepiece bus.

Embodiment

Offest electrode spark plug comprises: as the spark plug tip of Fig. 5 and as the spark plug bottom of Fig. 6.

Spark plug tip comprises: the bus 1(2 of take electrode (1) and being attached thereto) tie point is starting point, is followed successively by insulating ceramics (3), bus 2(4), bus 3(5) and sidepiece bus (10); Wherein, bus 1(2), bus 2(4), bus 3(5) and sidepiece bus (10) in the plane of discharge end, make the shallow slot as Fig. 1 ~ 6, in this groove, pyrolytic coating one deck conductivity ceramics, forms strip shaped electric poles, and polishes flat.

As consistent with conventional ignition plug in the spark plug bottom of Fig. 6, just in inside center, main body sparking-plug electrode (9) and metal shell (6) and inner position limiting structure are set.

In process of production, spark plug tip is installed to spark plug bottom above, electrode (1) utilizes high-temperature electric conduction glue (8) to be connected with main body sparking-plug electrode (9); Spark plug tip and bottom utilize together with high-temperature insulating glue (7) adheres to, and form integral body complete, sealing.

In the present invention, metal electrode only plays electric action, and all sparking electrodes are conductivity ceramics and make.The feature of conductivity ceramics is corrosion-resistant, anti-galvanic corrosion, therefore spark plug life is long, again because its thermal insulation is good, therefore electrode ignition is reliable; Electrode temperature high " self-cleaning " is made good use of, antipollution is strong, therefore pottery is polycrystalline structure again, because crystal grain has formed many cusps, after spraying, can form many microcosmic " peak awns ", according to point discharge principle, therefore electronics is easy to transmitting, and assembling mode is mucilage binding, increased the sealing of spark plug, more originally 98% sealing increases.The corrosion resistance of conductivity ceramics is strong, and galvanic action is little, therefore be doubled and redoubled the useful life of this spark plug.

There are 3 discharging gaps in this overall spark plug, is respectively: bus 1(2) with bus 2(4); Bus 2(4) with bus 3(5); Bus 3(5) with sidepiece bus (10), and sidepiece bus (10) connects together with metal shell (6), forms complete discharge loop.

The course of work of the present invention is: during engine operation, igniting is the moment that primary circuit disconnects, and ignition coil has just produced high voltage, is added between each conductivity ceramics.In discharging time offest electrode spark plug, the direction of flow of positive charge is: ignition coil center high-voltage line → main body sparking-plug electrode (9) → electrode (1) → bus 1(2) → and skip to bus 2(4) → skip to bus 3(5) → skip to sidepiece bus (10) → metal shell (6), form loop.

When the air in each gap in eccentric spark plug is breakdown, the gas in its gap is ionized generation electric spark, lights gaseous mixture, makes engine work done.By special construction of the present invention, form discharge process 3 times, increase ignition area, and can light rarer combustion mixture, engine power is increased, fuel consumption reduction.

This spark plug is more bigger than traditional spark plug head, but does not affect its use.

Claims

1. 3 discharge spark plugs of an offest electrode, it is characterized in that: at 3 strip regions of spark plug tip and away from the sidepiece spraying conductivity ceramics of offest electrode one side, form bus, electrode is connected with edge bus, form 3 times discharge channel, the conductivity ceramics of sidepiece and metal shell form loop simultaneously.