Sparking plug

A spark plug and spark discharge technology, applied in the field of spark plugs, can solve the problems of ignition time delay, increased distance, unfavorable energy saving and environmental protection, etc., and achieve the effects of improving ignition efficiency and return efficiency, improving utilization rate, and improving combustion efficiency

Active Publication Date: 2014-04-23
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.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0029] Please also see image 3 , which is a structural schematic diagram of Embodiment 1 of the spark plug of the present invention. The spark plug 20 includes a center electrode 21 , an insulator 24 , a housing 26 and a flow guiding insert 28 . The insulator 24 is a ceramic insulator, which has a shaft hole extending along the axial direction. The center electrode 21 is inserted through the shaft hole of the insulator 24 and exposes the end portion 211 . The housing 26 is hollow and sheathed on the surface of the insulator 24 . The flow guiding insert 28 is fixedly installed in the hollow housing 26 , its front end is facing the central electrode 21 , its rear end is located at the opening end of the housing 26 , and its outer wall is attached to the inner wall of the housing 26 .

[0030] Please also see Figure 4 ,actually image 3 Schematic diagram of the three-dimensional perspective structure of the flow guiding insert shown. The flow guide insert 28 is a columnar...

Embodiment 2

[0037] The spark plug of this embodiment 2 is substantially the same as that of embodiment 1, the only difference being that the structure of the guide insert of the spark plug is different. Please also see Figure 5 with Image 6 ,in, Figure 5 It is a structural schematic diagram of Embodiment 2 of the spark plug of the present invention. Image 6 It is a schematic structural diagram of the flow guide insert 38 of the second embodiment. The flow guide insert 38 is a columnar body, on which a flame injection hole 382 and a flow guide groove 383 are arranged. Wherein, the flame injection hole 382 is circular, located at the central axis of the flow guiding portion 38 , and runs through the front and rear end surfaces of the flow guiding portion 38 . The flow guide groove 383 is located on a sidewall of the flow guide portion 38 . The diversion groove 383 is formed by washing and cutting process, and the cross section can be formed into triangular, polygonal, arc and other...

Embodiment 3

[0040] The spark plug of the present embodiment 3 is substantially the same as that of the embodiment 1, and the only difference is that the structure of the guide insert of the spark plug is different. see Figure 7 , which is a schematic structural diagram of the flow guiding insert 48 of the third embodiment. The flow guide insert 48 is a columnar body, wherein the shaft is provided with a flame spray hole 482 that runs through the front and rear end surfaces of the flow guide insert 48 , and around the fire spray hole 482 is provided with a flow guide hole 483 that runs through the front and rear end surfaces of the flow guide insert 48 . The flow guide hole 483 communicates with the fire injection hole 482 through the inner cavity of the casing at the front end of the flow guide insert 48 . In the present embodiment, the aperture of the fire injection hole at the rear end of the flow guide insert is larger than the aperture at the front end, and the opening of the flame...

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PUM

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Abstract

The invention discloses a sparking plug which comprises an insulator, a central electrode, a shell, a diversion plug-in and a grounding electrode. The insulator has a shaft hole extending in the axis direction. The central electrode is inserted in the shaft hole which penetrates through the insulator, and is exposed out of the end part. The shell is a hollow cylinder coated on the surface of the insulator. The diversion plug-in is a cylinder body; a flaming hole penetrating through the front and back end surfaces of the diversion plug-in is formed in the center of the diversion plug-in; the diversion plug-in is fixed in the shell; the front end of the diversion plug-in is aligned to the central electrode, the back end is positioned at the opening end of the shell, and the outer wall is bonded with the inner wall of the shell. The grounding electrode is arranged on the inner wall of the shell, or is arranged on the periphery of the flaming hole at the front end of the diversion plug-in; an ignition end part having a spark discharge gap is formed between the grounding electrode and the end of the central electrode. Compared with the prior art, the sparking plug avoids the generation of precipitates and the caused corrosion condition, so that the service life is prolonged. The structure of the diversion plug-in can improve the ignition efficiency and reflowing efficiency of the sparking plug so as to improve the combustion efficiency of an internal combustion engine.

Description

technical field [0001] The invention relates to the ignition field of an internal combustion engine, in particular to a spark plug. Background technique [0002] The internal combustion engine mixes liquid or gaseous fuel with air, and directly inputs it into the high-pressure combustion chamber inside the cylinder to generate power. It is a heat engine that converts thermal energy into mechanical energy. The spark plug is installed on the internal combustion engine to ignite the mixed gas in the combustion chamber. see figure 1 , which is a schematic structural view of the spark plug 13 in the prior art. The spark plug 13 includes a center electrode 132 , an insulator 134 , a shell 136 and a ground electrode 138 . The insulator 134 is a ceramic insulator with an axial hole extending along the axis, and the center electrode 132 is inserted through the axial hole of the insulator 134 . The casing 136 is disposed on the outer periphery of the insulator 134 , and the surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T13/02H01T13/34
CPCH01T13/02H01T13/32H01T13/54
Inventor 张蝶儿
Owner 张蝶儿
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