spark plug

Abstract

The invention discloses a sparking plug. The sparking plug comprises a central electrode, an insulating sleeve and a metal shell, wherein a side electrode is arranged at a part, corresponding to the central electrode, on the metal shell; the side electrode comprises a connecting part and a sparking generation part; a discharging gap is arranged between the sparking generation part and the central electrode; the sparking generation part comprises an upper surface and a lower surface; a guide hole, which penetrates through upper and lower surfaces, is formed in a part, corresponding to the central electrode, on the sparking generation part; a plurality of guide units, which are distributed spirally, are arranged on an inner side wall of the guide hole; a supporting part, which stretches out horizontally of the guide hole, is formed in the upper surface of the sparking generation part; and an arc striking part, which stretches out upward, is arranged at a part, corresponding to the central electrode, on the supporting part. The arc striking part corresponding to the central electrode is arranged on the side electrode of the sparking plug, so that the arc striking success rate is greatly improved and phenomenon that an engine is difficult to start and fire lacking is easy to cause are avoided; and meanwhile, the guide hole is formed in the side electrode of the sparking plug so that sparking is sufficiently released after ignition, so that the energy conversion efficiency of the automobile engine is improved.

Description

technical field [0001] The present invention relates to spark plugs. Background technique [0002] The spark plug is a main component in the ignition system of a car engine. The function of the spark plug is to introduce the high-voltage electricity generated by the ignition coil into the engine cylinder, and generate sparks between the spark plug electrodes to ignite the mixed oil and gas. The mixed oil and gas burn and expand to provide engine power output. energy required. [0003] The traditional spark plug mainly includes a center electrode, a ceramic insulator, a metal shell and a side electrode welded on the metal shell. The center electrode is set at one end of the spark plug, and the side electrode is set at the same end of the spark plug corresponding to the center electrode. , there is a specific gap between the center electrode and the side electrodes. With the help of this specific gap, an arc can be generated between the center electrode and the side electrod...

AI Technical Summary

Problems solved by technology

However, the spark plug using this spark guiding device still has the following disadvantages: the engine is not easy to start, and the phenomenon of "misfire" is prone to occur, especially in cold and dry winters, it is difficult to start

There are two reasons for the above phenomenon. One is that the setting of the guide part in the above-mentioned spark guiding device increases the actual distance between the center electrode and the side electrode, and the required breakdown voltage increases; the other is that there is no protruding arc on the side electrode. structure, although it will lead to multiple flashovers when the ignition is successful, which improves the ignition effect, but the difficulty of arc ignition increases

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