JP3062166U - Spark plug - Google Patents

Abstract

(57) [Summary] [PROBLEMS] A flame column generated by a momentary explosion in a spark plug cover at the time of spark ignition of a spark plug, ignites oil gas in an engine cylinder and burns it. Provided is a spark plug in which the ignition point at the time is increased, the ignition space is increased, the ignition mistake is prevented, and the service life is extended. The present invention relates to a spark plug comprising a spark plug body and a spark plug cover, wherein a convex ring at one end of the spark plug cover is fitted into a concave groove of the spark plug body, and a center electrode of the spark plug is provided. Approaching the inner layer wall of the spark plug cover, a slight groove is provided in the spark plug cover inner wall, and a small number of inlet / outlet holes are provided in the spark plug cover. Is formed.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a type of spark plug, and more particularly to a spark plug used for automobiles and motorcycles, in which combustion is completely performed by the stability of ignition and detonation, and the compression ratio is appropriately improved to improve the engine. The present invention relates to one that can provide an effect of increasing the output of a motor and reducing exhaust gas.

[0002]

[Prior art]

In general, carbon hydride (HC) discharged into an exhaust pipe of a vehicle is a main component of gasoline, and when carbon (C) contained in fuel is completely burned, carbon dioxide (CO ₂ ) and hydrogen The gas (H ₂ ) and the oxygen gas (O ₂ ) are combined into water vapor and discharged. When the gasoline is incompletely burned, the carbon hydride (HC) is emitted as unburned surplus gas. The cause of this phenomenon is that the flame gradually expands after ignition of the spark plug B in the combustion chamber A as shown in FIG. Relatively low, the mixed gas near the cylinder wall does not reach the combustion temperature, the temperature of the flame gradually decreases, and the flame disappears before reaching the cylinder wall. Such a mixed gas layer that extinguishes the flame is generally referred to as quench joint. As a result, the mixed gas combustion speed (flame propagation) becomes slow, and the operation of the engine becomes unstable.

[0003] The quench C is an unburned mixed gas, which is discharged out of the cylinder by the piston D in the exhaust stroke, and contains a large amount of a hydrocarbon compound and a pollutant gas. Furthermore, when the engine is at a high rotational speed (RPM), the spark of ignition tends to cause a misfire (ignition non-combustion) due to the scavenging action of the exhaust gas by the piston, and the combustion time is shorter, and the quenching is more difficult. The C phenomenon was more likely to occur, which made it impossible to improve engine horsepower and caused a lot of exhaust gas pollution.

[0004] The most fundamental method for reducing hydrocarbon compounds and carbon monoxide is to dilute the mixed gas. However, if the mixed gas is too thin, it becomes difficult to ignite and burn, and the speed after burning is reduced. Become slow. For this reason, Toyota Motor Corporation of Japan has designed a TGP (Tur Bulk Generating Pot). As shown in FIG. 11, a turbulence generating cavity F is designed therein in a combustion chamber E. The combustion process is as follows. 1. When the piston G of the combustion chamber E descends, the intake gate G opens and sucks the mixed gas. 2. When the piston G descends and reaches the lowest point, the intake gate G closes, the piston G 1 starts propulsion upward, and compresses the mixed gas. 3. When the compression operation of the piston G reaches the uppermost point, the ignition starts in the combustion chamber E, and is ignited by the spark of the spark plug I near the injection port or in the cavity, and first, the mixed gas in the cavity is burned. 4. Further, as shown in FIG. 12, a flame jet is injected into the combustion chamber E, whereby a relatively thin mixed gas is also satisfactorily burned, generating carbon hydride (HC) or carbon monoxide (CO). Decrease.

[0005] The TGPs described above have the effect of reducing HC and CO, but have many disadvantages. It is as follows. 1. Since the turbulence generation cavity is designed in the combustion chamber, it is necessary to take this into consideration when designing the engine, it cannot be retrofitted later, it is not easy to modify it, and Cost increased. 2. The turbulence cave has no instantaneous explosion function, cannot generate the flame airflow of the present invention, and cannot instantaneously ignite and burn the mixed gas in the cylinder at the same time. 3. The compression ratio cannot be increased or decreased, and the output horsepower of the engine cannot be improved.

[0006]

[Problems to be solved by the invention]

 SUMMARY OF THE INVENTION It is an object of the present invention to provide a kind of spark plug structure that removes a bent ground-side electrode of a conventional spark plug and has a small inlet / outlet small hole and a groove therein. A spark plug that combines a cover and forms a turbulence-causing cave to achieve good combustion of a relatively lean gas mixture without altering the structure of the automobile engine body. Carbon generation can be reduced and the life of spark plugs can be extended.

It is another object of the present invention to provide a kind of spark plug structure, in which a flash column in the spark plug cover where an instantaneous explosion occurs ignites a mixed gas in the engine cylinder and completes the explosion. It should increase the engine horsepower by providing the effect of simultaneously achieving combustion and reduce emissions.

Another object of the present invention is to provide a kind of structure of a spark plug, in which after the spark plug cover is closed to the spark plug, the space in the cylinder is reduced and the compression ratio is reduced. Therefore, the engine output horsepower can be increased.

[0009]

[Means for Solving the Problems]

 The invention of claim 1 is a spark plug formed by combining a spark plug body and a spark plug cover, wherein a convex ring at one end of the spark plug cover is fitted into a concave groove of the spark plug body, and a center electrode of the spark plug is formed. Close to the inner wall of the spark plug cover, a slight groove is provided on the inner wall of the spark plug cover, and a small number of inlet / outlet holes are provided in the spark plug cover. When the spark of the spark plug is ignited, the flame column generated by the instantaneous explosion in the spark plug cover ignites and burns the oil gas in the engine cylinder. The ignition point is increased, the ignition space is increased, the ignition mistake is prevented, and the service life of the spark plug is extended. It is a spark plug. The invention of claim 2 is characterized in that the spark plug cover is formed integrally with the spark plug body to form a spark plug explosion chamber, and the spark plug explosion chamber is provided with a small number of inlet / outlet holes. The spark plug according to claim 1 is provided. According to a third aspect of the present invention, there is provided the spark plug according to the first aspect, wherein the number and shape of the small holes are determined according to the intake and exhaust characteristics of various automobiles.

[0010]

[Embodiment of the invention]

 As shown in FIGS. 1 to 3, the spark plug (1) of the present invention removes the bent ground-side electrode at the upper end of the conventional spark plug, and combines and fixes a separate set of spark plug covers (2). And as one. The spark plug cover (2) is an arc-shaped lid, and a convex ring (21) is formed at one end thereof. The convex ring (21) is inserted into a concave groove (11) of the spark plug (1). It is fitted to form the bullet-shaped spark plug shown in FIG. An explosion chamber is formed by covering with the spark plug cover (2).

As shown in FIG. 3, when the spark plug cover (2) is fitted on the spark plug (1), the center electrode (12) of the spark plug (1) is connected to the inner layer of the spark plug cover (2). In the arc layer of the spark plug cover (2), a small number of small intake / exhaust holes (22) are distributed. The number and shape of the intake / exhaust holes (22) are determined by the characteristics of the intake / exhaust of the various automobile bodies, and the spark plug cover (2) shown in FIG. 5 or the spark plug cover as shown in FIG. A small number of small holes (23) can be added beside the inlet / exhaust holes (22) of the plug cover, and thus it can be applied to the inlet / exhaust characteristics of various different vehicles. At the time of spark ignition of the spark plug (1) in the combustion chamber, an instantaneous explosion occurs in the spark plug cover (2), and the instantaneously generated flame column (flame airflow) enters and exits the small holes (22) of the spark plug cover (2). ) To ignite the oil gas in the cylinder and burn it to reduce the exhaust gas. Further, as shown in FIGS. 7 and 8, a slight groove (24) is provided on the inner side wall of the spark plug cover (2). The groove (24) can be installed at the contact end with the inlet / outlet small hole (22) and the small hole (23), and forms a slight point (25), and the point (25) sets the ignition point at the time of ignition. It increases the ignition space, increases the likelihood that the spark plug will not extinguish, and responds to the need to lower the voltage at the time of ignition, thus extending the service life of the spark plug.

FIG. 9 shows another embodiment of the present invention, in which a spark plug (1) is not provided with a spark plug cover, and an explosion chamber (13) is formed integrally with the spark plug. Also, a small number of small intake / exhaust holes (14) are formed in the explosion chamber (13) of the spark plug having an arc shape.

[0013]

[Effect of the invention]

 The spark plug of the present invention has the following advantages. 1. In the spark plug cover (2), a turbulent cavity action is formed, without the need to modify the engine itself, and in the most economical and convenient situation, a relatively thin gas mixture can be burned well. It can reduce hydrocarbon compounds (HC). 2. The flame air current generated by the instantaneous detonation of the spark plug ignites and burns the oil gas in the engine cylinder, achieving the purpose of instantaneous detonation and complete combustion, achieving an increase in engine output horsepower and a reduction in exhaust gas. Can. 3. The thickness of the spark plug fitted with the spark plug cover (2) increases, and the space inside the piston cylinder remains unchanged, so the space inside the cylinder becomes smaller, which reduces the volume of the spark plug cover (2). The compression ratio can be increased or decreased by modification, and the output horsepower of the engine can be increased. 4. The components of the spark plug of the present invention are very simple, do not require modification of the vehicle engine design and can be applied to any vehicle to achieve complete combustion and increase the horsepower output of the engine. 5. At the time of spark ignition of the center electrode (12) of the spark plug, the intermediate spark point ignites at 360 degrees toward the spark plug cover (2) (see FIG. 4), so that it is difficult for coal to accumulate, and combustion is difficult. It is relatively complete and facilitates starting when the vehicle is started. (Because the conventional spark plug is a single-point ground-side electrode, when used for a certain period of time, it becomes difficult to generate sparks due to the accumulation of sparks, Incomplete combustion causes the vehicle to be difficult to start.) 6. The spark plug cover (2) of the present invention has a plurality of tips (25) increased by the groove (24) on the inner wall, and the tips (25) increase the ignition point at the time of ignition. And can meet the demand for lowering the voltage, thereby extending the service life of the spark plug.

In summary, the spark plug of the present invention achieves an instantaneous explosion, complete combustion, and an improved compression ratio in an automobile engine by improving the spark plug, thereby providing an effect of increasing the engine output horsepower. . This is an innovative device in the history of spark plugs, and it can be said that it has practicality, novelty, inventive step, and industrial value.

[Brief description of the drawings]

FIG. 1 is an external perspective view of the present invention.

FIG. 2 is an exploded perspective view of the present invention.

FIG. 3 is a sectional view of the present invention.

FIG. 4 is a partial sectional operation display diagram of the present invention.

FIG. 5 is an embodiment of the present invention.

FIG. 6 is another embodiment of the present invention.

FIG. 7 is a front view of the spark plug cover according to the embodiment of the present invention;

FIG. 8 is a sectional view of the spark plug cover according to the embodiment of the present invention;

FIG. 9 is another embodiment of the present invention.

FIG. 10 is a diagram showing quenching occurrence in a general spark plug.

FIG. 11 is a diagram showing a combustion chamber provided with a turbulence generating cave of Toyota Motor Corporation of Japan.

FIG. 12 is a diagram showing the operation of the turbulence generating tunnel of FIG. 11;

[Explanation of symbols]

 (1) Spark plug (11) Groove (11) (12) Center electrode (13) Spark plug explosion chamber (14) I / O small hole (2) Spark plug cover (21) Convex ring (22) I / O small hole (A) Combustion chamber (B) Spark plug (C) Quenching (D) Piston (E) Combustion chamber (F) Turbulence generation cavity (G) Piston (E) Combustion chamber (F) Turbulence generation cavity (G) Piston (H) Inlet gate (I) Spark plug

Claims (3)

[Utility model registration claims] 1. A spark plug comprising a spark plug body and a spark plug cover, wherein a convex ring at one end of the spark plug cover is fitted into a groove of the spark plug body, and a center electrode of the spark plug is connected to the spark plug. Close to the inner wall of the cover, a slight groove is provided on the inner wall of the spark plug cover, and a few inlet / outlet holes are provided in the spark plug cover, and a slight point is formed at the contact end of the inlet / outlet hole of the groove. At the time of spark ignition of the spark plug, a flame column generated by an instantaneous explosion in the spark plug cover ignites and burns the oil gas in the engine cylinder. The spark plug is configured to increase the ignition space, prevent ignition mistakes, and extend the service life of the spark plug. Rug. 2. The spark plug cover according to claim 1, wherein the spark plug cover is integrally formed with the spark plug body to form a spark plug explosion chamber, and the spark plug explosion chamber is provided with a small number of inlet / outlet holes. 2. The spark plug according to 1. 3. The method according to claim 1, wherein the number and shape of the small holes are determined by the various characteristics of the vehicle.
The spark plug according to claim 1.