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Spark plug capable of sparking efficiently

A spark plug and high-efficiency technology, applied in the field of spark plugs, can solve the problems of delay in ignition time, increase in distance, unfavorable energy saving and environmental protection, etc., and achieve the effect of shortening time and increasing combustion time.

Active Publication Date: 2015-03-11
张蝶儿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, setting the center electrode and the ground electrode in the cavity of the housing will increase the distance for the sparks generated by the two electrodes to enter the combustion chamber, thereby delaying the ignition time of the mixed gas in the combustion chamber. If the time of the stroke and the expansion stroke is fixed, the combustion time of the mixed gas will be shortened, which will reduce the combustion efficiency of the internal combustion engine to a certain extent, which is not conducive to energy saving and environmental protection.
And the ignition gap 15 between the ground electrode 13 and the discharge end 17 of the center electrode is extremely important, and must be within a certain distance to facilitate its discharge, but the ignition gap 15 is too small to be unfavorable for the mixed gas to enter the air intake stroke. The discharge gap also reduces the ignition efficiency of the spark plug to a certain extent

Method used

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  • Spark plug capable of sparking efficiently
  • Spark plug capable of sparking efficiently
  • Spark plug capable of sparking efficiently

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] see image 3 , which is a schematic cross-sectional structure diagram of the spark plug 100 according to Embodiment 1 of the present invention. The spark plug 100 includes a center electrode 120 , an insulator 140 , a shell 160 and a ground electrode unit 180 . The insulator 140 is a ceramic insulator with a shaft hole extending along the axis. The center electrode 120 is inserted through the shaft hole of the insulator 140 and exposes the end portion 122 . The shell 160 is a hollow structure, sleeved on the surface of the insulator 140 , and the end 122 of the center electrode 120 is located in the cavity of the shell 160 . The ground electrode unit 180 is disposed on the inner wall of the cavity of the housing. Threads are provided on the outer wall of the casing 160 .

[0026] Please also see Figure 4 ,actually figure 1 The three-dimensional structural diagram of the ground electrode unit 180 of the spark plug 100 is shown. Specifically, the ground electrode ...

Embodiment 2

[0033] see Figure 5 , which is a schematic structural diagram of the ground electrode unit 280 of the spark plug according to Embodiment 2 of the present invention. The structure of the spark plug of the second embodiment is substantially the same as that of the spark plug of the first embodiment, the only difference lies in the structure of the ground electrode unit 280 : the ground electrode unit 280 includes a connecting portion 282 and a fire conducting portion 284 . The connecting portion 282 is vertically connected to the inner wall of the casing 160 , and the fire guiding portion 284 is vertically connected to the connecting portion 282 . A plurality of through holes 286 are defined on the connecting portion 282 . In this embodiment, the connecting portion 282 is circular, the outer ring is connected to the inner wall of the casing 160 , and the inner ring is vertically connected to the fire guiding portion 284 . The fire guide part 284 has a cylindrical shape penetr...

Embodiment 3

[0035] see Figure 6 , which is a schematic structural diagram of the ground electrode unit 380 of the spark plug according to Embodiment 3 of the present invention. Its structure is substantially the same as that of the spark plug in Embodiment 2, the only difference is that: the ground electrode unit 380 includes a connecting portion 382 , a fire guiding portion 384 and a releasing portion 388 . The connecting portion 382 is vertically connected to the inner wall of the casing 160 , and the fire guiding portion 384 is vertically connected to the connecting portion 382 . A plurality of through holes 386 are defined on the connecting portion 382 . The connecting portion 382 is annular, and its outer ring is connected to the inner wall of the casing 160 , and its inner ring is vertically connected to the fire guiding portion 384 . The fire guide part 384 has a cylindrical shape penetrating up and down. A narrow fire guiding passage A is formed in the fire guiding part 384 . ...

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PUM

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Abstract

The invention relates to a spark plug capable of sparking efficiently. The spark plug capable of sparking efficiently comprises an insulator, a central electrode, a shell and a grounding electrode unit. The insulator is provided with an axle hole extending in the axis direction. The central electrode is inserted into the axle hole penetrating through the insulator, and the end portions of the central electrode are exposed. The shell is of a hollow structure and sleeved on the surface of the insulator so that the end portions of the central electrode can be arranged in a cavity of the shell. The grounding electrode unit is arranged inside the shell and comprises a connecting portion and a fire guiding portion. The fire guiding portion is parallel with the shell, and the connecting portion is connected with the fire guiding portion and the inner wall of the shell and provided with a through hole. The spark plug capable of sparking efficiently is resistant to corrosion, and has the advantages of sparking efficiently, saving energy and reducing emission.

Description

technical field [0001] The invention relates to a spark plug for use in an internal combustion engine. Background technique [0002] The spark plug is installed on the internal combustion engine (engine) to ignite the mixed gas in the combustion chamber. see figure 1 , which is a schematic structural diagram of the spark plug 10 in the prior art. The spark plug 10 includes a center electrode 12 , an insulator 14 , a housing 16 and a ground electrode 18 . The insulator 14 is a ceramic insulator with an axis hole extending along the axis, and the center electrode 12 is inserted through the axis hole of the insulator 14 . The housing 16 is disposed on the outer periphery of the insulator 14 . The ground electrode 18 is connected to the end of the casing 16 , and bends to extend opposite to the center electrode 12 , forming a spark discharge gap with the center electrode 12 . An electric arc is generated between the center electrode 12 and the ground electrode 18 through th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01T13/54H01T13/32
Inventor 张蝶儿
Owner 张蝶儿