KR200394370Y1 - Ignition plug for perfect combustion in internal combustion engines - Google Patents

Abstract

The present invention relates to a ignition plug that can be applied to an ignition device of an internal combustion engine such as LPG or gasoline, and exhibits combustion performance close to complete combustion, thereby degrading the performance of the vehicle due to incomplete combustion, increasing exhaust gas, excessive fuel waste, and engine noise. It solves the causes of various problems such as increase, shorten engine life due to carbon fixation of combustion chamber, deterioration of durability of peripheral parts, and increase combustion efficiency in the engine to extend the life of spark plugs, as well as save energy and air pollutants. The present invention relates to a spark plug device developed as an environmentally friendly product. In order to achieve the above object, in the present invention, in order to enhance the explosive force of the mixer by preheating the mixer around the spark generating part of the spark plug to a predetermined temperature at all times and maintaining the temperature higher than other surroundings, The preheat plates were attached at predetermined intervals to cover (in whole or in part).

Description

Ignition plug for perfect combustion in internal combustion engines

The present invention relates to a ignition plug that can be applied to an ignition device of an internal combustion engine such as LPG or gasoline, and exhibits combustion performance close to complete combustion, thereby degrading the performance of the vehicle due to incomplete combustion, increasing exhaust gas, excessive fuel waste, and engine noise. It solves the causes of various problems such as increase, shorten engine life due to carbon fixation of combustion chamber, deterioration of durability of peripheral parts, and increase combustion efficiency in the engine to extend the life of spark plugs, as well as save energy and air pollutants. The present invention relates to a spark plug device developed as an environmentally friendly product.

In general, internal combustion engine engines such as automobiles produce about 25% of the fuel burner using gasoline or LPG, and 30 to 40% is used to generate energy for driving the engine, and 30 to 40% of exhaust gas is exhausted. Therefore, the theoretically calculated fuel and air mixture ratio (fuel ratio) is 14.7: 1, and the economical air-fuel ratio is 16: 1 and the maximum The air-fuel ratio is known to be 12.5: 1.

However, depending on each manufacturer and type of engine, the air-fuel ratio can be changed a lot.In any case, incomplete combustion of fuel may be caused by deterioration of the vehicle performance, increased exhaust gas, excessive fuel consumption, increased engine noise, and carbon fixation in the combustion chamber. This is the cause of various problems such as shortening of engine life and deterioration of durability of peripheral parts.

To compensate for these problems, no matter how precisely the injection rate of the mixing ratio is injected and exploded, the amount of fuel and air enters the cylinder machine gap and the ignition and explosion are not always constant inside the cylinder of the engine. Efficiency cannot be obtained. In addition, the explosion status is changed every time according to the engine speed and the crank angle, so it is not possible to obtain 100% complete combustion.

When burning automobile fuel, the average driver uses about 10% of the output energy. In order to increase the output of the engine, a large amount of air must be sent to the engine, and an appropriate amount of fuel must be mixed and combusted. Therefore, the higher the output, the worse the fuel economy.

Accordingly, the present inventors improve the combustion efficiency (complete combustion) of the fuel to increase the efficiency of the engine, thereby bringing out the maximum efficiency that can be obtained from a predetermined displacement, and increasing the efficiency by reducing the energy lost by heat as much as possible. The study was conducted. This results in the same emissions, minimizing noise, improving engine smoothness and quietness, improving power and fuel economy, and reducing CO (carbon monoxide), HC (hydrocarbon), and NOx (nitrogen oxide), which are hazardous emissions. Environmental protection can be achieved.

If it is possible to always preheat around the spark-generating part of the spark plug located in the combustion chamber to increase the combustion efficiency, the spark plug which is inevitably sparked at a predetermined temperature at a certain displacement will further improve the ignition performance of the spark plug. The present invention was completed by focusing on the efficiency.

In order to achieve the above object, in the present invention, in order to enhance the explosive force of the mixer by preheating the mixer around the spark generating part of the spark plug to a predetermined temperature at all times and maintaining the temperature higher than other surroundings, The preheat plates were attached at predetermined intervals to cover (in whole or in part).

Important considerations in the spark plug, as in the present invention, are that the material of the preheating plate is not deformed even if the heat of the combustion chamber is high (over 1200 ° C), and there is no factor of excessive cost increase. The thing which should not make the mounting uncomfortable, etc. are mentioned.

Spark plug according to the present invention configured in consideration of this concept is the same as FIG. The detailed description will be described later.

First, the structure of a general spark plug will be described. As shown in Fig. 1, there is a screw portion 13 inserted into the combustion chamber of the engine, and at the center of the distal end thereof is separated from the electrode 12 to which high pressure is applied and the electrode at a predetermined interval. And a ground piece 11 connected to the screw portion 13. As is well known, the high voltage supplied from the distributor is discharged at high pressure between the electrode 12 and the ground piece 11 to generate sparks, and the surrounding mixer is combusted to explode.

2 is a configuration diagram of a spark plug belonging to an ignition device of an internal combustion engine such as an LPG vehicle, a gasoline vehicle, a motorcycle according to the present invention.

The preheating plate 21 is joined around the spark generating part of the general spark plug (that is, the distal end of the screw part 13). The preheating plate 21 can be processed into the same shape as in Figs. 3 and 4, but it is not necessary to have such a ring shape. It may be in the form of a partially broken open curve rather than a continuous ring shape.

The present invention is a spark plug installed in the LPG and gasoline internal combustion engine, the preheating plate 21 using a super heat-resistant alloy of tungsten steel or tantalum steel around the spark generating part of the spark plug (that is, the screw portion that enters the combustion chamber ( It is composed by joining the end of 13) by special welding.

The preheating plate 21 is preferably made of a material that is resistant to temperature and thermal deformation of the spark plug and strong in corrosion resistance, such as tantalum or tungsten. However, in the case of pure tungsten, it is more preferable to use an alloy of tungsten and tantalum alloy because the processing cost is increased and the processing cost is greatly increased.

Tungsten or tantalum or an alloy thereof, which is a super heat-resistant special metal having high heat resistance and excellent thermal conductivity, forms a preheating plate 21 having a thickness of about 0.8 to 2 mm. Roughly the same diameter as the perimeter). Since it only needs to be inserted into the hole formed in the combustion chamber of the engine, the outer diameter does not have to be determined accurately, but may be appropriately determined according to the shape of the hole and the thread of the engine. The inner diameter of the preheating plate 21 is also determined according to the shape of the spark generator. However, since sparks should not be generated toward the preheating plate 11 instead of the ground piece 11 by the spark electrode 12, the inner diameter should be processed to maintain the minimum insulation distance compared to the ground piece 11.

The preheating plate 21 rises rapidly due to the explosion that starts around the spark generating part, and serves to release heat to the surrounding mixer while maintaining the temperature for a predetermined time, so that the heat island with heat is largely heated. island effect. That is, the temperature of the periphery adjacent to the inner diameter of the preheating plate 21 is always kept higher than the temperature of other parts. Therefore, the mixer around the spark generator is always preheated above a certain temperature.

On the other hand, it provides a heat island effect but hinders the free flow of the mixer, but rather adverse effects. As one of the adverse effects, the space formed by the preheating plate 21 exerts a heat island effect, but carbon sludge will be generated much more quickly than the existing spark plugs due to the strong explosion.

In order to prevent such adverse effects and at the same time maximize the heat island effect, the preheating plate 21 is joined in a spaced apart state at a predetermined interval from the end of the screw portion 13. To this end, the shape of the preheating plate 21 is processed as in FIG. 4 illustrates the shape of the preheating plate 21 shown in FIG. 3 in more detail. 4 shows both examples which can be adopted as the shape of the preheating plate 21.

The preheating plate 21 according to the present invention has a ring shape as a whole, and at least two recesses 22 are formed on the circumference thereof. In FIG. 4, the depression 22 is shown as four, but since the depression 22 is for keeping a predetermined distance from the distal end of the threaded portion 13, the purpose of the present invention even if there are two or more Is achieved. However, since the depression 22 is directly welded to the threaded end face, it is more preferable that the depression 22 is three or four to minimize the physical deformation of the preheating plate 21 after welding.

3, the depth H (that is, the distance between the end face of the threaded portion 13 and the main body of the preheating plate 21) of the depression 22 is formed to be about 1 to 1.5 mm, but this value is limited. As described above, it is only necessary that the electrode 12 maintain the insulation distance such that no spark occurs. This will be different according to the vehicle engine specification, spark plug type, which can be easily designed by those skilled in the art. In addition, the thickness of the body of the preheating plate 21 is formed as 0.8 ~ 2mm as described above, but this is also not limited, the degree that can maintain the insulation distance to the extent that no spark occurs by the electrode 12 It just needs to be thick.

As shown in Fig. 4, the shape of the depression 22 can be variously designed. The ring at the top of FIG. 4 has a substantially rectangular depression 22 with the bottom of the depression 22 flat, and in the figure below it shows a depression 22 in the shape of a triangular bottom. Doing. The shape of the depression 22 is not limited to that shown. In addition to these, it is possible to form the depressions 22 in a circular shape, a hemispherical groove shape as a whole, and other various forms. Since the function of the recess 22 is to separate the preheating plate 21 main body from the end face of the screw portion 13 by a predetermined distance, the shape is not a big problem, but if it is designed considering the recess depth and the number of formations, Will be. However, since the role of the recess 22 also serves to bond the preheat plate body to the distal end of the screw portion 13, this point may be considered together.

As described above, the material of the preheating plate 21 should be a metal having good thermal conductivity if it has super heat resistance. Suitable materials include tungsten and tantalum. Since tungsten is difficult to weld, tungsten and tantalum alloys are also preferably used.

Although specific embodiments have been described with reference to the drawings, it is apparent to those skilled in the art that the configuration of the present invention is not limited thereto. The technical scope of the present invention is determined by the appended claims.

As described above, since the preheating plate 21 is processed into a super heat resistant plate having the best heat resistance and thermal conductivity, it absorbs 800 ~ 1500 ° C high heat generated instantaneously during the explosion stroke of the engine and emits it around all the time, thereby exhausting it. By rapidly increasing the temperature of the mixed gas flowing back after the stroke, the spark strength is increased to increase the explosive force with thermal expansion. This leads to maximum combustion efficiency from the car engine. Therefore, the present invention greatly improves the output of internal combustion engines such as LPG, automobiles and motorcycles, and significantly reduces the emission of harmful substances in the exhaust gas, which can save energy by reducing air pollution and fuel efficiency due to increased combustion efficiency. Has a very economical value because its lifespan is extended.

1 is a perspective view of a general spark plug.

Figure 2 is an exploded perspective view of the spark plug according to the present invention.

Figure 3 is a side view of Figure 2

Figure 4 is a detailed view of the preheating plate used in the present invention.

Claims (5)

In a spark plug for an internal combustion engine, comprising: a screw portion entering the engine combustion chamber; an electrode provided at the center of the distal end of the screw portion; and a ground piece that discharges together with the electrode. Including a preheating plate bonded to cover the screw end surface, The preheating plate is joined to be spaced apart from the end surface by a predetermined interval, and is formed in a continuous ring shape, the outer diameter of which is substantially the same as the diameter of the screw portion, and the size that can be inserted into the hole formed in the combustion chamber of the engine. Is a spark plug, characterized in that the size to maintain a distance that does not cause a discharge action with the electrode. The spark plug of claim 1, wherein the preheating plate is processed from tungsten steel, tantalum steel, or an alloy thereof. The spark plug of claim 1, wherein the preheating plate has a thickness of 0.8 to 2 mm. The method of claim 1, In order to separate the preheating plate from the threaded end surface at a predetermined interval, at least two recesses having a predetermined depth are formed in a portion adjacent to the end surface of the preheating plate, The depth of the recessed portion is a spark plug, characterized in that the depth to maintain the distance so that the preheating plate does not cause a discharge action with the electrode. 5. The spark plug of claim 4 wherein the depth of the depression is about 1 to 1.5 mm.