CN2583845Y - a spark plug - Google Patents

Abstract

The utility model relates to a spark plug capable of improving ignition efficiency, comprising an insulating porcelain body, a nut fixed to the bottom end of the insulating porcelain body, an external threaded portion located at the top of the insulating porcelain body, a central electrode protruding from the top end, and a suspended grounding electrode which rises from the top end of the external threaded portion to above the central electrode and is spaced correspondingly thereto. The utility model is characterized in that the grounding electrode has a through hole connecting the inner surface to the outer surface. By forming the through hole, the outer surface of the central electrode is partially connected to the outside through the through hole, so that the ignition spark is radially dispersed, the spark intensity is enhanced, and the combustion efficiency is improved.

Description

a spark plug

technical field

The utility model relates to a spark plug, in particular to a spark plug which can improve the ignition efficiency by setting a through hole on the ground electrode to help rapid combustion and reduce the carbon deposition rate.

Background technique

There are many brands of spark plugs on the market, and the types are different. According to the spark plugs of various brands, they are mainly composed of general insulating ceramic body, ignition plug, external thread, central electrode and grounding electrode. However, ordinary spark plugs The contact area with vaporized petroleum gas is small, and the ignition and combustion efficiency is low, so that the petroleum gas cannot be completely burned and exploded, and the explosion thrust is reduced, so that the engine horsepower cannot be exerted, and residual oil is easy to accumulate, causing secondary explosions, increasing noise and air pollution, etc. shortcoming.

As shown in Figures 1, 2 and 3, a conventional spark plug 1 has an insulating ceramic body 11, a nut 12 fixed on the bottom of the insulating ceramic body 11, and an external thread on the top of the insulating ceramic body 11. part 13, a central electrode 14 protruding from the top, and a cantilever-shaped ground electrode 15 that climbs up from the top of the external thread part 13 to above the central electrode 14 and is spaced corresponding to it.

In the existing spark plug 1, since the central electrode 14 and the ground electrode 5 are flat surfaces and are parallel and juxtaposed, when the high-voltage current is released from the central electrode 14, due to the short distance corresponding to the The ground electrode 15 produces a suitable amount of spark 16, which is ejected from the tip or outer surface of the central electrode 14 and directly impacts the ground electrode 15. The flat surface 151 of the ground electrode 15 close to the central electrode 14 has hindered the spark 16. Scattering, and it is limited to burning one side of the combustion chamber, causing the oil below and beside the back of the grounding electrode to be unable to burn instantly, and the burning speed is slow, so that the oil gas cannot be completely burned, reducing the explosion thrust, and the engine horsepower cannot be effective. It is easy to accumulate residual oil, which will also cause secondary explosions and increase noise pollution. In addition to incomplete combustion, the ratio of toxic gases produced by carbon monoxide and carbon compounds will increase, causing air pollution and accelerating the production of a large amount of carbon deposits17 The rate of ignition is abnormal, and it must be cleaned frequently to continue to use, which will only increase many troubles in use, which is quite impractical.

Utility model content

The purpose of the utility model is to provide a spark plug which can improve the ignition efficiency by setting a through hole in the ground electrode, which can help rapid combustion and reduce the carbon deposition rate.

The spark plug which can improve the ignition efficiency of the utility model is used on the engine of the vehicle. The central electrode at the top, and the suspended ground electrode that climbs up from the top of the external thread to the top of the central electrode and is spaced corresponding to it, is characterized in that the ground electrode has a through hole connecting the inner surface to the outer surface , through the formation of the through hole, the outer surface of the central electrode is partially communicated with the outside through the through hole.

Description of drawings

The spark plug that can improve ignition efficiency of the present utility model is described in detail below by preferred embodiment and accompanying drawing, in the accompanying drawing:

Figure 1 is a perspective view illustrating a conventional spark plug;

Fig. 2 is a partial three-dimensional enlarged view of the existing spark plug;

Fig. 3 is a partial sectional view illustrating the state of use of the existing spark plug;

Fig. 4 is a perspective view illustrating a preferred embodiment of the spark plug of the utility model that can improve ignition efficiency;

Figure 5 is a partial perspective enlarged view of the preferred embodiment;

Figure 6 is a partial sectional view of the preferred embodiment, illustrating the explosive state of the spark during ignition;

Fig. 7 is a partially assembled sectional view of the preferred embodiment.

Detailed ways

Referring to Fig. 4, shown in 5, 7, the preferred embodiment of the spark plug 2 that the utility model can improve ignition efficiency is to be used on the engine of vehicle, and this spark plug 2 has an insulating porcelain body 21, and one is fixed on this insulating porcelain body 21 bottom nut 22, an external thread portion 23 positioned at the top of the insulating ceramic body 21, a central electrode 24 that protrudes from the top, and a top that climbs up from the external thread portion 23 to the top of the central electrode 24 and connects with it. Suspension-shaped ground electrodes 25 corresponding to intervals. The ground electrodes 25 have through holes 253 connecting the inner surface 251 to the outer surface 252. Through the formation of the through holes 253, the outer surface 241 of the central electrode 24 is partially transparent. It communicates with the outside world through the through hole 253 . In a preferred embodiment of the present application, the shape of the through hole 253 is an inverted triangle with a narrow inside and a wide outside.

Referring to Fig. 6, when in use, when the central electrode 24 flows in a high-voltage current through the high-voltage ignition coil, and generates an appropriate amount of sparks 26 with the ground electrode 25, and scatters toward the ground electrode 25, at this time, due to the through hole of the ground electrode 25 253 is set as an inverted triangle (seeing Fig. 7) that is narrow inside and wide outside, so, helps this spark 26 to radiate and scatter evenly, to increase spark intensity, promote burning speed, and strengthen the thrust of explosion, help piston move fast, And drive the crank in the engine to rotate (not shown in the figure) to generate rotary inertial force to increase the output torque and improve the acceleration of the vehicle. In addition, because of the increased combustion area, the LPG can be burned more completely, which can Reduce the production of carbon monoxide and carbon compounds in the exhaust gas, and minimize air pollution.

Secondly, since the ground electrode 25 of this case is provided with a through hole 253, it is beneficial for the carbon ash generated during ignition and combustion to pass through the through hole 253 with the help of a strong scattering force, and to be quickly removed in a radial manner, effectively reducing the carbon deposition rate, and It reduces the puzzlement and inconvenience of removing carbon deposits during use, and at the same time can maintain the normal ignition of the spark plug 2, which has the practical advantage of prolonging the service life, so the purpose of the utility model can indeed be achieved.

Claims (2)

1. A kind of spark plug, is installed on the engine of vehicle, and this spark plug has insulating porcelain body, the nut that is fixed on this insulating porcelain body bottom, is positioned at the external thread portion of this insulating porcelain body top, protrudes from the central electrode of top, And a suspended ground electrode that climbs up from the top of the external thread part to the top of the central electrode and is spaced corresponding to it, characterized in that: The ground electrode has a through hole connecting the inner surface to the outer surface, and through the through hole, the outer surface of the central electrode is partially communicated with the outside through the through hole. 2. According to the described spark plug of claim 1, it is characterized in that: The shape of the through hole is an inverted triangle with narrow inside and wide outside.

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