CN2265014Y

CN2265014Y - Carbon deposit and dirt preventing sparking plug

Info

Publication number: CN2265014Y
Application number: CN 96220525
Authority: CN
Inventors: 刘宪贵
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-08-16
Filing date: 1996-08-16
Publication date: 1997-10-15
Anticipated expiration: 2006-08-16

Abstract

The utility model relates to a carbon deposit and dirt preventing spark plug which is mainly composed of a porcelain insulating component and a metal casing positioned outside the porcelain insulating component, wherein, an outer heating chamber and an inner heating chamber are respectively arranged between the lower end of the spark plug and a porcelain insulator and between the porcelain insulator and a center electrode. The utility model adopts a double heating chamber structure, so that the utility model has the advantages of strong igniting capability and high reliability, fully utilizes finite space, and farthest increases the surface leakage distance between electrodes. The carbon deposit and dirt preventing capability are enhanced, the time of cleaning and maintaining the carbon deposit is extended. The times of cleaning and maintaining the carbon deposit are reduced, and meanwhile, the service life of the spark plug is extended.

Description

A kind of anti-carbon deposit resistant spark plug

The utility model relates to a kind of spark plug, particularly a kind of anti-carbon deposit, resistant spark plug.

Normally used spark plug, its structure is made up of porcelain insulating assembly and metal shell two parts of being positioned at porcelain insulating assembly outside, central electrode is positioned at the centre bore of porcelain insulator, and lateral electrode is fixedly connected on the lower end of metal shell, during use, light combustion mixture in the cylinder by the high-voltage spark that forms between two electrodes, as everyone knows, porcelain insulator is the key component of spark plug properties of product, and in the existing technology, porcelain insulator is got angry and only is provided with a ring-type hot cell between end and metal shell, make the surface leakage distance that can form between two electrodes less, and be restricted, when the imperfect combustion carbon deposit appears in engine, electric current is easy to leak along the outer surface of insulator ignition end, cause not producing electric spark between electrode, can not light gaseous mixture, cause engine running undesired, at this moment, must change spark plug immediately.

The purpose of this utility model is to provide a kind of anti-carbon deposit resistant spark plug, and its not only anti-carbon deposit, durability against pollution are strong, the reliability height, and can prolong the time and the useful life of safeguarding the cleaning carbon deposit greatly.

Its concrete solution is: make full use of the porcelain insulator ignition end confined space, increase interelectrode surface leakage distance to greatest extent, enlarge porcelain insulator ignition end endoporus, make and constitute a ring-type hot cell between the central electrode that is arranged in the porcelain insulator centre bore and porcelain insulator, and porcelain insulator ignition end together constitutes two hot cells structure with an other hot cell and the interior hot cell that metal shell constitutes, and, a fixedly connected lateral electrode is as building electrode in the metal shell lower end, electric spark is produced between two electrodes, or metal shell itself is as the bonding ground electrode, and in porcelain insulator is got angry the end face of holding and end, coated one deck is high temperature resistant on the lateral wall, oxidation resistant high temperature alloy is as the middle transition electrode, electric spark is produced between central electrode and transition electrode and transition electrode and metal shell simultaneously, and become two sparkovers.

The utility model adopts two hot cells structure, not only ignition ability is strong, the reliability height, simple in structure, and made full use of the confined space, increased interelectrode surface leakage distance to greatest extent, anti-carbon deposit, the durability against pollution of spark plug have been improved greatly, prolong the time of safeguarding the cleaning carbon deposit, reduced the number of times of safeguarding the cleaning carbon deposit, also prolonged the useful life of spark plug simultaneously greatly.

In conjunction with the accompanying drawings the utility model is described in detail below by embodiment:

Fig. 1 is the utility model embodiment 1 structural representation front view.

Fig. 2 is the utility model embodiment 2 structural representation front views.

Embodiment 1:

Among Fig. 1, central electrode (5) glueds joint by electro-conductive glass (4) and wiring screw rod (3), and be arranged in the centre bore of porcelain insulator (2), constitute the porcelain insulating assembly, metal shell (1) is positioned at the porcelain insulator outside, its lower end is welded with crooked lateral electrode (7), as the bonding ground electrode, between porcelain insulator assembly and metal shell, be provided with intermediate seal ring (6), between spark plug lower end metal shell (1) and the porcelain insulator (2), be respectively arranged with outer hot cell (a) of ring-type and interior hot cell (b) between porcelain insulator (2) and the central electrode (5).

During use, can go up respective threads by metal shell (1) screws in spark plug in the engine cylinder combustion chamber, the high-voltage power-line of engine is connected on the exposed parts of wiring screw rod (3) according to the order of sequence, can carry out ignition operation, electric spark produces between the central electrode (5) of spark plug and lateral electrode (7).When sooting of the spark plug, can carry out the labor cleaning easily.

Embodiment 2:

Among Fig. 2, be as the bonding ground electrode with metal shell itself, and porcelain insulator is got angry end and is provided with the middle transition electrode, and middle transition electrode (8) is to be got angry by porcelain insulator that one deck high temperature alloy of coated constitutes on the inside and outside sidewall of the end face of end and end.All the other structures are identical with embodiment 1, the electric spark of the spark plug that this structure constituted is to produce simultaneously between central electrode (5) and transition electrode (8) and transition electrode (8) and metal shell (1), and this spark plug is suitable at a high speed, the engine (as: motorcycle, car engine) of high compression ratio is middle uses.

Claims

1, a kind of anti-carbon deposit resistant spark plug, mainly constitute by porcelain insulating assembly and the metal shell (1) that is positioned at porcelain insulating assembly outside, between porcelain insulator assembly and metal shell (1), be provided with intermediate seal ring (6), it is characterized in that being provided with outer hot cell (a) between plug ignition end metal shell (1) and the porcelain insulator (2), be provided with interior hot cell (b) between porcelain insulator (2) and the central electrode (5), constitute the bonding ground electrode or on insulator is got angry end, be coated with a middle transition electrode (8) by the fixedly connected lateral electrode (7) in metal shell (1) lower end, and constitute the bonding ground electrode by metal shell (1) self.