CN2286535Y

CN2286535Y - Jetting tuype sparking-plugs

Info

Publication number: CN2286535Y
Application number: CN 97238906
Authority: CN
Inventors: 穆逆; 朱德林; 曹辉
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-04-24
Filing date: 1997-09-19
Publication date: 1998-07-22
Anticipated expiration: 2007-09-19

Abstract

The utility model relates to a part of a gasoline engine, particularly a jetting type sparking-plug which is composed of an electrode rod, a casing, a ceramic body and a cap. The fire striking end of the casing is provided with a subsidiary combustion chamber which can discharge and strike fire. The utility model has the advantages of uneasy carbon deposit conflagration, long service life, notable fuel saving effect, good starting performance, etc.

Description

The injecting type spark plug

The utility model relates to a kind of gasoline engine part, specifically a kind of injecting type spark plug.

Spark plug is the critical component of gasoline engine igniting, and its performance quality has a strong impact on engine power performance and economy.Existing spark plug all exists carbon distribution and lets out electricity and gap variation problem, occurs " burning to death " often and situation about misfiring, and makes that engine consumption increases, power descends, even starts difficultly, can not run well, and influences the engine operate as normal.

The purpose of this utility model is exactly that a kind of spark plug that can overcome the above-mentioned deficiency of existing spark plug will be provided.

In order to realize above-mentioned purpose, the utility model has adopted following technical scheme:

The injecting type spark plug is made up of electrode stem [1], shell [5], ceramic body [6] and cap [8], and shell [5] sparking end has the subsidiary combustion chamber of a discharge sparking within it.

Subsidiary combustion chamber jet of the present utility model is a porous type.

Injecting type spark plug of the present utility model, jet center, preceding combustion chamber is a porous type.

Injecting type spark plug of the present utility model, jet center, preceding combustion chamber is a macropore, the tilting aperture in outer.

Injecting type spark plug of the present utility model is secondary to have burnt that to be with the subsidiary combustion chamber axis that center line becomes horn-like for tilting little axially bored line.

Electrode stem discharge end of the present utility model is hemisphere or multiaspect shape.

Owing to adopted technique scheme, the utility model has ideally been realized its goal of the invention, has the carbon distribution of being difficult for and " burns to death ", long service life, characteristics such as oil-saving effect significantly and startability is good.

Description of drawings:

Accompanying drawing 1 is the utility model concrete structure schematic diagram

Accompanying drawing 2 is existing spark plug concrete structure schematic diagrames

Embodiment:

Accompanying drawing has been described an embodiment of the present utility model, with reference to accompanying drawing injecting type spark plug, is made up of electrode stem [1], shell [5], ceramic body [6] and cap [8], and shell [5] firing tip has the subsidiary combustion chamber of a discharge sparking within it.The subsidiary combustion chamber jet is a porous type.There is a macropore at subsidiary combustion chamber jet center, and there is tilting aperture the outer.The tilting little axially bored line of subsidiary combustion chamber burns with pair, and to be to axis that center line becomes horn-like.Electrode stem [1] discharge end is hemisphere or multiaspect shape.

The course of work of the present utility model and principle are as follows: gaseous mixture is squeezed into subsidiary combustion chamber during compression, create a more stable place for igniting like this, because the volume of subsidiary combustion chamber is little, the gas turbulent fluctuation does not have in the combustion chamber of air cylinder strong, make the metastable environment that is formed with of flame nuclear, high-voltage spark is skipped electrode generation electric arc and is lighted gaseous mixture, because the existence of ignition advance angle, gaseous mixture is clamp-oned subsidiary combustion chamber in addition when plug ignition, electric arc just is created on its passage like this, gaseous mixture all is brought into the energy that electric spark produces in the subsidiary combustion chamber, make the rate of catching fire, startability improves greatly, and the passage of gaseous mixture is at spout, just risen the high-temperature body of excess temperature by hot gas, elaioleucite in the gaseous mixture, under the effect of each little hole path of high temperature, further gasify and mixed gas.Guaranteed the good condition that initial stage flame karyomorphism becomes.The thin more ignition point of elaioleucite is high more.

The electrode stem discharge end of injecting type spark plug is hemisphere or multiaspect shape, and the other utmost point is the inboard round edge of main injection jet, like this electric spark flare of Chan Shenging or fan-shaped.Igniting face between the electrode also increases greatly, thereby increases the ability that its arc resistant is ablated or corroded from the physics aspect, has guaranteed that spark plug has long useful life.

Because the existence of ignition advance angle, clamp-oning the bigger possible contact electric spark of gaseous mixture of subsidiary combustion chamber lights, rising along with temperature and pressure, the gas that is burning sprays to main chamber with the form of flame by a plurality of spouts, improved flame transmission speed greatly, simultaneously because the injection of a plurality of flames, shorten the distance between each flame more, promptly shortened the used time of burning, this burning rate had more been quickened in vigorous agitation after porous was sprayed and produced, the ignition advance angle of peak torque is significantly postponed,, realized rapid and stable burning so temperature and pressure has all improved, reduce quick-fried possibility of shaking simultaneously, be more conducive to the burning of lean mixture and high compression ratio, thereby obtain higher degree of constant volume, reduce waste gas NO _xGeneration.

The subsidiary combustion chamber of spark plug front portion places among the high temperature, the place ahead of its jet and central electrode, it is the highest point of temperature, so each time virgin gas come in all can further gasify, take away a part of heat simultaneously and lower the temperature to spark plug, jet is the passage of air-flow, so often be subjected to air scour, be difficult to carbon deposit, can improve the life-span.

Claims

1, a kind of injecting type spark plug is made up of electrode stem [1], shell [5], ceramic body [6] and cap [8], and feature of the present utility model is: shell [5] firing tip has the subsidiary combustion chamber of discharge igniting within it.

2, injecting type spark plug according to claim 1 is characterized in that the subsidiary combustion chamber jet is a porous type.

3, injecting type spark plug according to claim 2 is characterized in that there is a macropore at jet center, preceding combustion chamber, the tilting aperture in outer.

4, injecting type spark plug according to claim 3, it is characterized in that burning the secondary tilting little axially bored line that burnt with pair, to be to axis that center line becomes horn-like.

5, injecting type spark plug according to claim 1 is characterized in that electrode stem [1] discharge end is hemisphere or multiaspect shape.