Positive ceramic wrapped type multipole spark plug

A wrap-type, spark plug technology, applied in spark plugs, electrical components, circuits, etc., can solve the problems of reducing fuel utilization efficiency, difficult to start the engine, increasing the difficulty of ignition, etc., to improve power performance, increase the average effective pressure in the cylinder, The effect of improving efficiency

Active Publication Date: 2016-09-28
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, when the engine is cold-started, if there is insufficient ignition energy, the flame-out problem of the spark plug makes it difficult to start the engine; in the initial stage of traditional spark plug ignition, the flame is slow, which reduces the utilization efficiency of fuel; during the combustion process, due to the effect of high temperature and chemical corrosion , there will be more corrosion on the positive and negative electrodes, and the resistance between the electrodes will increase, which will increase the difficulty of ignition; in addition, with the continuous increase of the compression ratio, in order to reduce the occurrence of knocking, higher requirements are also put forward for the ignition efficiency of the spark plug.

Method used

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  • Positive ceramic wrapped type multipole spark plug
  • Positive ceramic wrapped type multipole spark plug
  • Positive ceramic wrapped type multipole spark plug

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Such as figure 1 , 2 , 3, and 4, the spark plug mainly includes a ground nut 1, a ceramic insulator 2, a connection screw, a shell 3, a gasket 4, a center electrode 5 and a side electrode 6, and the thread is processed on the connection screw, which is roughly the same as the existing general spark plug structure unanimous. The center electrode is wrapped inside a ceramic insulator, and the side electrodes are in a circular tubular structure and coaxially fixed with the center electrode wrapped in the ceramic insulator; the bottom end of the center electrode is lower than the bottom end of the side electrodes, and the center electrode The bottom end is welded with three L-shaped ignition electrodes arranged at equal intervals. The front end of the L-shaped ignition electrode is bent upward and the end face of the front end is guaranteed to be horizontal. Ceramic coating 7 is sprayed on the surface of the ignition electrode except the front end end face; the bottom of t...

Embodiment 2

[0026] Such as Figure 5 , 6 , 7, the spark plug mainly includes a ground nut, a ceramic insulator, a terminal screw, a shell, a gasket, a center electrode and a side electrode, the center electrode is wrapped inside the ceramic insulator, and the side electrode is a circular tubular structure and is wrapped with the The central electrode in the ceramic insulator is coaxially socketed and fixed; the bottom end of the central electrode is lower than the bottom end of the side electrodes, and three metal sheet-shaped ignition electrodes arranged at equal intervals are welded on the bottom end of the central electrode, and the metal sheet-shaped The ignition electrode and the center electrode are in a vertical state; the metal sheet-shaped ignition electrode and the center positive electrode are integrally sprayed with a ceramic coating, and the front end faces of the three ignition electrodes are polished to expose the metal end faces; the bottom ends of the side electrodes are ...

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Abstract

Provided is a positive ceramic wrapped type multipole spark plug including a grounding nut, a ceramic insulator, a wiring screw rod, a casing, a gasket, a center electrode, and a side electrode. Threads are arranged on the wiring screw rod. The spark plug is characterized in that the center electrode is wrapped by the ceramic insulator, the side electrode is in a tubular structure and is jointed and fixed to the center electrode in the ceramic insulator coaxially, the bottom end of the center electrode is lower than the bottom end of the side electrode, the bottom end of the center electrode is welded to three L-shaped igniting electrodes at equal intervals, the front ends of the L-shaped igniting electrodes bend upwards and the end faces of the front ends are horizontal, the surfaces of the igniting electrodes except the front end faces are sprayed by ceramic coatings, the bottom end of the side electrode is provided with three protruding bosses protruding downwards in the circumferential direction at equal intervals, and the three bosses and the end faces of the three L-shaped igniting electrodes are vertically corresponding one by one and are equal in interval. The spark plug provided has the advantages of high igniting efficiency and long service life.

Description

technical field [0001] The invention relates to an ignition device of a gasoline engine, in particular to a spark plug with multiple ignition electrodes. Background technique [0002] With the popularization of automobiles, the scope of engine use is getting wider and wider, so the requirements for the spark plug, a key component when the engine starts, are getting higher and higher. For example, when the engine is cold-started, if there is insufficient ignition energy, the flame-out problem of the spark plug makes it difficult to start the engine; in the initial stage of traditional spark plug ignition, the flame is slow, which reduces the utilization efficiency of fuel; during the combustion process, due to the effect of high temperature and chemical corrosion , there will be more corrosion on the positive and negative electrodes, and the resistance between the electrodes will increase, which will increase the difficulty of ignition; in addition, with the continuous increa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T13/22H01T13/34H01T13/38H01T13/46
CPCH01T13/22H01T13/34H01T13/38H01T13/46
Inventor 邸立明杨海龙王亚强赵鹏
Owner YANSHAN UNIV
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