CN2232632Y

CN2232632Y - Spark plug with lighting-off chamber

Info

Publication number: CN2232632Y
Application number: CN 95212815
Authority: CN
Inventors: 黄才翰
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-05-24
Filing date: 1995-05-24
Publication date: 1996-08-07
Anticipated expiration: 2005-05-24

Abstract

The utility model relates to a spark plug which is combined with the parts of a gasoline engine. The spark plug can be used by an automobile, a motorcycle, etc. The spark plug comprises a nut, an insulator, a junction pole, a casing, a sealing ring, a porcelain head, a central electrode and a ground electrode. The ground electrode is a perforated plate which can lead a space in which an electric ignition is positioned in the casing to form an ignition chamber. The utility model solves the problems that the electric ignition spark of an existing spark plug is weak, the break-out force is weak, much waste gas occurs, oil is wasted, the service life is short, the fabrication and the installation of the parts of a flashover part are inconvenient, the cost is higher, etc. The spark plug of the utility model has the advantages of strong break-out force, little pollution from waste gas, oil saving, long service life, convenient fabrication, low cost, few waste products, etc.

Description

The spark plug of band igniting chamber

The utility model is a kind of spark plug that can combine with the petrol engine part.Can be used for automobile, motorcycle etc.

Existing spark plug can see from Fig. 3, it by nut 1 ', insulator 2 ', junction pole 3 ', housing 4 ', sealing ring 5 ', porcelain head 6 ', central electrode 7 ' and lateral electrode 8 ' form.The electric spark that it produces with single-point arcing between the lateral electrode by the central electrode outer internal combustion oil of cylinder gas of its housing that goes to ignite promotes piston-advance.The shortcoming of this spark plug is: 1) electric spark that produces of single-point arcing is fainter, and therefore more by its required time ratio of the outer internal combustion oil of cylinder gas of housing that goes directly to ignite, the explosive force that is produced is less and waste gas is many, the utilance of fuel oil is low; 2) lateral electrode is with must welding between the housing, so its installation is cumbersome, must be equipped with welding equipment; 3) for realizing the single-point arcing, than higher, that is cost is higher to required precisions such as the part manufacturing of arcing part and installations; 4) heat at arcing position is difficult for being removed, so the carbon deposit that easily oils, easily ablated causes the useful life of spark plug shorter.

The purpose of this utility model is to overcome the shortcoming that exists in the above-mentioned prior art, provides a kind of utilance height, explosive force of fuel oil big, waste gas is few, manufacturing is easy for installation and cost is low, the spark plug of the band igniting chamber of long service life.

The spark plug of band igniting chamber includes nut, insulator, junction pole, housing, sealing ring, porcelain head, central electrode and can implement electrically-fired ground electrode with central electrode, and characteristics of the present utility model are: ground electrode is a perforated plate that can make space, the electric ignition place formation igniting chamber in the housing.

Perforated plate can be plate shaped, also can be arch, and it can be fastenedly connected on housing by its periphery.Its quantity can be one, so that form an igniting chamber in the housing; Also can be more than one and be distributed in distance, so that form a plurality of igniting chambers of connecting in the housing.

To and contrast accompanying drawing by embodiment below, the utility model will be done further narration, have in the accompanying drawing:

Fig. 1 is the front view of the spark plug of the utility model band igniting chamber;

Fig. 2 is the front view that has the utility model spark plug of two igniting chambers;

Fig. 3 is the front view of existing spark plug.

The utility model the 1st embodiment can see that it includes nut 1, insulator 2, junction pole 3, housing 4, sealing ring 5, porcelain head 6, central electrode 7 and ground electrode 8 from Fig. 1.Ground electrode is an arch sheet that has hole 9, and it is pressed in the seam groove of shell ends with its peripheral embedding, and compresses with the housing bound edge, thereby makes the housing electric ignition space at central electrode place form an igniting chamber 10.

The outside of housing 4 is piston cylinders, when piston (not giving expression among the figure) retreats fuel vapor and is compressed, the outer fuel vapor of housing can enter in the igniting chamber 10 by hole 9, and be full of igniting chamber, as meet electric ignition, then its electric spark is the fuel vapor in the pilot chamber, meanwhile, the fire that ignites 9 is scurried in the cylinder from the hole, the fuel vapor in the cylinder that ignited, and moving piston-advance is tried hard to recommend in its ignition.

The utility model the 2nd embodiment can find out from Fig. 2, have ground electrode 8A, the 8B that arrange two block gaps on its housing simultaneously, make and exist two igniting chamber 10A and 10B that connecting in the housing simultaneously, wherein ground electrode 8A is that plate shaped, 8B is an arch, their embeddings are pressed in the seam groove of shell ends, and are fixed with the housing bound edge.

The same with embodiment 1, make the outer fuel vapor of housing enter igniting chamber 10B, 10A successively by the hole on the ground electrode 9, during electric ignition, its electric spark fuel vapor among the igniting chamber 10A of having ignited, simultaneously flame is from hole 9A scurried out and ignited fuel vapor in the igniting chamber 10B, and ignited internal combustion oil of cylinder gas by hole 9B again, promote piston-advance.

The utility model has the advantages that: 1) the faint spark of electric ignition generation is by igniting Fuel vapor in the igniting chamber and obtain amplifying, this spark that has amplified removes to light internal combustion oil of cylinder gas The time, the explosive force of generation is big and strong because its firepower is big, so the speed that piston advances is fast, The waste gas of burning is few, oil inflame is abundant and fuel-efficient; 2) the arcing position be difficult for ablated, Also be difficult for the carbon deposit that oils, so the long service life of spark plug; 3) because the central electrode quilt Be isolated in the igniting chamber, the temperature of the central electrode in the existing spark plug of its temperature is low, institute Can shorten length with insulating ceramic, thereby easily manufacturedly and difficult scrap because of porcelain body fracture, So percent defective is low; 4) because ground electrode can assemble with embedding method, thus manufacturing, easy for installation, Cost is low.

Claims

1, a kind of spark plug that includes the band igniting chamber of nut (1), insulator (2), junction pole (3), housing (4), sealing ring (5), porcelain head (6), central electrode (7) and ground electrode (8) is characterized in that: ground electrode is (9) the with holes plate that can make space, the electric ignition place formation igniting chamber (10) in the housing.

2, the spark plug of band igniting chamber as claimed in claim 1 is characterized in that: said ground electrode is to be fastened on the housing to form igniting chamber (10A), two perforated plates that are distributed in distance (8A) of (10B), (8B) of series connection with its periphery.