Symmetric pair extremely-strong electric field discharge type spark plug

Abstract

The invention relates to a symmetric pair extremely-strong electric field discharge type spark plug, which mainly comprises a central electrode and a bonding electrode, wherein a first discharge action surface of the central electrode and a second discharge action surface of the bonding electrode are respectively provided with first discharge bulges and second discharge bulges which are equal in quantity; the first discharge bulges and the second discharge bulges are blade-shaped and correspond one by one; in addition, net sectional areas of two corresponding endpoints of an ignition electrode of the spark plug are respectively gradually reduced towards the tail ends along a normal direction of the first discharge action surface and the second discharge action surface; a first blade point side and a second blade point side which linearly extend are respectively formed at the tail ends of the first discharge bulges and the second discharge bulges; the first blade sides correspond to the second blade sides one by one, so that the central electrode and the bonding electrode have corresponding discharge blade point side structures; and therefore net sectional areas of the two discharge action ends are reduced, the charge density of discharge blade point ends is promoted, an ignition electric field intensity is rapidly established, and the purpose of improving combustion efficiency, saving fuel oil, and the like are further achieved.

Description

technical field [0001] The present invention relates to a symmetrical dipole strong electric field discharge type spark plug, especially a kind of spark plug whose ignition electrodes correspond to two ends, the center electrode and the ground electrode have corresponding discharge blade end structures, by reducing the effective discharge capacity of the electrode discharge end The cross-sectional area increases the charge density at the tip of the discharge blade to quickly establish the ignition electric field strength, thereby achieving a technology that improves combustion efficiency and saves fuel. Background technique [0002] According to the known spark plug structure, it is used in the ignition system of vehicles or internal combustion engines. It mainly uses the first discharge action surface of the center electrode to ground the high voltage electrode provided by the ignition coil to the second discharge action of the electrode ground. The high-voltage discharge i...

AI Technical Summary

Problems solved by technology

However, these prior patents mainly design the center electrode or the ground electrode as a multi-point ignition structure, which is not designed as the corresponding blade-shaped electrode structure of the present invention.

Apparently, although these prior patent technologies have the function of multi-point ignition structure, they are still unable to effectively and quickly increase the ignition critical electric field, and the ignition performance must be enhanced by increasing the voltage. Furthermore, the charge density cannot be increased. The ignition arc cannot be concentrated, but it not only consumes energy, but also when it is running fast, the ignition time will be prolonged and the ignition arc will be too weak, resulting in poor ignition efficiency and lack of fuel consumption

Moreover, if the electrode is designed as a pin-point structure, it cannot withstand high-voltage discharge, and it is easily damaged, resulting in an enlarged discharge gap, making it unusable, and greatly reducing its durability.

[0007] There is also a prior patent for reducing the cross-sectional area of ​​the electrode, such as US 5,461,210, US 5,461,276 and US 7,589,460. Although these patents have the function of enhancing the critical electric field due to the reduction of the electrode cross-section, the electrode ends are shrunk to The center is in the shape of a needle point, as described in the previous paragraph, after a long-term high-voltage discharge, it is easy to be damaged and the discharge gap increases, causing the ignition voltage to increase, poor ignition and unusable, greatly reducing its durability.

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