CN2285525Y

CN2285525Y - Sparking-plug

Info

Publication number: CN2285525Y
Application number: CN 96224515
Authority: CN
Inventors: 李静衡
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-30
Filing date: 1996-08-30
Publication date: 1998-07-01
Anticipated expiration: 2006-08-30

Abstract

The utility model relates to a sparking-plug which comprises a joint nut, an inner electrode, an outer electrode, an alumina ceramic insulator and a sparking-plug body. The utility model is mainly characterized in that a nickel alloy winding is in compression joint between the core of the inner electrode and a nickel alloy end head; the lower end of the body is provided with a radiating fin, and the outer electrode is in double-head symmetrical ignition. The utility model has the advantages of the high efficiency, low noise, water protection, pollution discharge, the elasticity of the inner electrode, high temperature resistance impact and long service life.

Description

Spark plug

A kind of spark plug, accessory has heat radiation, the spark plug class of multipole device.

Existing spark plug, for prolonging its useful life and removing carbon, the modes that change electrode that adopt more, electrode still adopts traditional directly being connected with the nickel alloy termination by electrode cores in as Chinese patent 94211544.9 is disclosed, be welded with external electrode on the screw thread of spark plug, and external electrode is curved or the interior band of arc tooth.Such arc multi-gap spark plug though changed single-point sparking-plug electrode shape, has multiple spot ignition function, but still exist following shortcoming, the one, interior electrode cores termination directly and the nickel alloy termination join, be rigid structure, easy fracture in the spark plug impact shock influences its useful life; The 2nd, multi-ignition, circumferential area is big, and heat-dissipating space is little, forms carbon deposit easily; The 3rd, the integral heat sink function is poor.

The purpose of this utility model is the deficiency that overcomes foregoing invention, and a kind of have heat radiation, bipolar flexible spark plug are provided.

Characteristics of the present utility model are to be crimped with the long nickel alloy winding of one 20～30cm in former between electrode cores and the nickel alloy termination; Be provided with 2-3 sheet fin in the lower end of body, on the screw thread of body lower end, be provided with two external electrodes symmetrically.

The utility model is reasonable in design, and simple, the interior electrode of technology is elasticity, high temperature resistant impact, long service life.Space heat elimination is fast, and fuel consumption is few, and noise is little, self-cleaning carbon deposit, and igniting reliability height, and the blowdown water resistance is good.

Below in conjunction with drawings and Examples the utility model is described in detail:

Fig. 1 is the utility model structure principle chart;

Among the figure 1, collar nut, 2, the high alumina ceramic insulator, 3, interior electrode cores, 4, airtight and watertight padding, 5, body, 6, sealing ring, 7, the nickel alloy termination, 8, the alloy winding, 9, the high temperature thermal grease conduction, 10, fin, 11, external electrode.

With Fig. 1 as can be seen, the inside of spark plug is the interior electrode cores 3 of elasticity winding 8, one end crimping that turns to 20～30cm length with the nickel alloy wire of diameter 0.3mm; The other end connects nickel alloy termination 7, be sealed in the shell of body 5 and refractory ceramics insulator 2 compositions with high temperature thermal grease conduction 9 and resistant to elevated temperatures airtight and watertight padding 4 then, it is good to make it form a blowdown water resistance, igniting and the high high-tension ignition positive pole of interference free performance, the other end of interior electrode cores 3 is connected with collar nut 1 again so that be connected with exterior part.For the heat that makes spark plug distributes as early as possible, the outer body 5 of spark plug is provided with 2-3 sheet fin 10, symmetry is connected with two external electrodes (negative pole) 11 on the body 5 lower end screw threads, the empty guide groove that screw thread and body are 5 has a sealing ring 6, and body 5 and high plumbous ceramics insulator 2 spinning tight fits form the shell of spark plug.According to the electrion principle, alloy winding 8 increases the interior electrode resistance of spark plug, when the secondary induction voltage of ignition coil was connected by electrode cores in collar nut 1 and the spark plug, winding 8 produced volt high pressure up to ten thousand immediately and is added in the nickel alloy termination and makes its some discharge.External electrode 11 double ends are connected on the screw thread symmetrically, increase the safety factor of igniting, and can be with the other side's carbon deposit burning.

Claims

1, a kind of spark plug, electrode cores 3 and nickel alloy termination 7 are connected to external electrode 11 in being connected on collar nut 1 on the screw thread of body 5, it is characterized in that: be crimped with the long nickel alloy winding 8 of one 20～30cm between interior electrode cores 3 and the nickel alloy termination 7; At least be provided with 2 fin in the lower end of body 5; Be arranged with two external electrodes on the screw thread of body 5 lower ends.

2,, it is characterized in that winding 8 is that the nickel alloy wire of 0.3mm turns to by a diameter according to the described spark plug of claim 1.

3, according to the described spark plug of claim 1, electrode electricity core 3, alloy winding 8, the 7 usefulness airtight and watertight paddings 4 of nickel alloy termination are sealed in the shell of high alumina ceramic insulator 2 and body 5 compositions in it is characterized in that.