CN2800597Y

CN2800597Y - Inside-packed type spark plug with external pole point, multi pole point ignition

Info

Publication number: CN2800597Y
Application number: CN 200520057756
Authority: CN
Inventors: 韦坤明
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-30
Filing date: 2005-04-30
Publication date: 2006-07-26
Anticipated expiration: 2015-04-30

Abstract

The utility model particularly relates to an inside-packed type spark plug with an external pole point and multi pole point ignition. The utility model comprises a metal outer shell. An inner cavity of the metal outer shell is provided with a middle positioned electrode. The utility model is characterized in that a pole point of the middle positioned electrode extends out of the metal outer shell; the pole point is welded with an electrode piece; a cavity mouth of the inner cavity of the metal outer shell is sealed with a ceramic piece; the electrode piece is crossed. Through the structure, the utility model raises the ignition efficiency, leads the combustion to be sufficient, reduces oil consumption, reduces exhaust emission and avoids the deposited carbon deposit.

Description

The inner sealing formula spark plug of external, the multipole some igniting of limit

Technical field:

The utility model relates to the engine ignitor technical field, refers in particular to the inner sealing formula spark plug of external, the multipole some igniting of a kind of limit.

Background technology:

Spark plug generally includes a housing, mid-electrode and a lateral electrode, during igniting, produces electric spark by electrion between central electrode and lateral electrode, thus the fuel in the ignition combustion chamber.Because the lateral electrode of this kind structure is positioned at the top of mid-electrode, therefore be the single-point igniting in use, the igniting effect is relatively poor, fuel combustion is insufficient, work is unreliable, and usually produces carbon distribution, and plug ignition was lost efficacy.

Summary of the invention:

The purpose of this utility model is to overcome the deficiencies in the prior art part, and the inner sealing formula spark plug of external, the multipole some igniting of a kind of limit is provided.

For achieving the above object, the technical scheme that the utility model provides is: it includes metal shell, and the inner chamber of metal shell is provided with mid-electrode, and main feature is: the limit of mid-electrode extends to outside the metal shell, is welded with electrode slice on the limit.

The accent place of the inner chamber of described metal shell is sealed by ceramic member.

Described electrode slice is cross.

After the utility model adopts technique scheme, owing to be welded with electrode slice on the mid-electrode, the limit of mid-electrode is extended to outside the metal-back of spark plug, direct and metal-back is lighted a fire, overcome the deficiency that the one pole igniting exists in the prior art, because the inner chamber accent place of metal shell is sealed by ceramic member, stopped to be deposited on the generation that inner chamber causes phenomenons such as can't lighting a fire in addition because of carbon deposit.

Description of drawings:

Accompanying drawing 1 is the utility model structural representation;

Accompanying drawing 2 is the utility model plan structure schematic diagram.

Embodiment:

Below in conjunction with a preferred embodiment and accompanying drawing thereof the utility model is described further,

See shown in accompanying drawing 1～accompanying drawing 2, the utility model includes metal shell 1, the inner chamber of metal shell 1 is provided with mid-electrode 2, the limit of mid-electrode 2 extends to outside the metal shell 1, and on limit, being welded with the electrode slice 3 that is cross, this electrode slice 3 can be lighted a fire with the upper surface correspondence position of metal shell 1, thereby has solved the defective that traditional one pole igniting exists, the accent place of the inner chamber of described metal shell 1 can stop carbon deposit to be deposited in the inner chamber by ceramic member 4 sealings.

The utility model has been carried high ignition effectiveness, makes burning more abundant, reduces oil consumption, reduces exhaust emissions, and stops the carbon deposit deposition.

The embodiment of the above is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model with this, so the equivalence that all shapes according to the utility model, structure and principle are done changes, all should be covered by in the protection range of the present utility model.

Claims

1, the inner sealing formula spark plug of external, the multipole some igniting of limit, include metal shell (1), the inner chamber of metal shell (1) is provided with mid-electrode (2), it is characterized in that: the limit of mid-electrode (2) extends to outside the metal shell (1), is welded with electrode slice (3) on the limit.

2, the inner sealing formula spark plug of external, the multipole some igniting of limit according to claim 1, it is characterized in that: the accent place of the inner chamber of described metal shell (1) is sealed by ceramic member (4).

3, the inner sealing formula spark plug of external, the multipole some igniting of limit according to claim 1, it is characterized in that: described electrode slice (3) is cross.