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Ignition system of internal combustion engine and installation method of spark plug in combustion chamber

An ignition system and spark plug technology, applied in the field of ignition systems, can solve problems such as incomplete combustion, corrosion, and electrode deposits, and achieve the effects of avoiding waste and good corrosion resistance

Active Publication Date: 2017-03-01
张蝶儿
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, usually the housing 136 of the spark plug 13 will protrude part into the cylinder of the combustion chamber 11. Since the fuel injector 12 is arranged on one side of the spark plug 13, the housing 136 will block part of the fuel from directly reaching the ignition end of the spark plug. part, thereby affecting the combustion efficiency; after long-term use, usually incompletely burned carbon black stains will be formed on the housing on one side of the fuel injector 12, that is, local carbon deposits caused by incomplete combustion, which will reduce the combustion efficiency and affect the Engine output power
Moreover, because the working environment of the spark plug is extremely harsh, the center electrode 132 and the ground electrode 138 need to be ignited countless times under high temperature and high pressure conditions in the combustion chamber 11, and deposits will appear on the electrodes and cause corrosion, resulting in the situation of the spark plug 13 deterioration

Method used

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  • Ignition system of internal combustion engine and installation method of spark plug in combustion chamber
  • Ignition system of internal combustion engine and installation method of spark plug in combustion chamber
  • Ignition system of internal combustion engine and installation method of spark plug in combustion chamber

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Embodiment 1

[0031] See image 3 , Which is a schematic structural diagram of the ignition system of the internal combustion engine of the present invention. The ignition system 20 of the internal combustion engine includes a combustion chamber 21, a spark plug 22 and a fuel injector 23. The combustion chamber 21 includes a hollow cylinder block 211 with a spark plug installation passage 212 on the inner wall of the cylinder block 211 for installing the spark plug 22 on the combustion chamber 21; and a fuel injector near the spark plug installation passage 212 The installation channel 214 is used to install the fuel injector 23 on the combustion chamber 21. The spark plug 22 has an ignition end A formed by a center electrode 221 and a ground electrode 222 thereof. The outer surfaces of the center electrode 221 and the ground electrode are both plated with a layer of precious metal, such as iridium, to improve their ignition performance. Different from the prior art, the ignition end A for...

Embodiment 2

[0036] The structure of the ignition system of the internal combustion engine of the second embodiment is substantially the same as that of the first embodiment, and the difference lies only in the structure of the spark plug. See Figure 5 , Which is a structural diagram of the spark plug 32 of the second embodiment. The spark plug 32 includes a center electrode 321, an insulator 324, a housing 326 and a ground electrode 322. The insulator 324 is a ceramic insulator and has a shaft hole extending in the axial direction. The center electrode 321 is inserted through the shaft hole of the insulator 324 and the end 3211 is exposed. The housing 326 has a hollow structure and is sleeved on the surface of the insulator 324, and the end 3211 of the center electrode 321 is located in the cavity of the housing 326 or near the opening of the housing 326 facing the cylinder. The ground electrode 322 is arranged on the inner wall of the cavity of the housing 326 and is opposed to the cen...

Embodiment 3

[0038] The ignition system of the internal combustion engine of the third embodiment is substantially the same as that of the second embodiment, and the difference lies in the structure of the spark plug. In order to make the ignition efficiency of the ignition system of the internal combustion engine of the present invention better, the inventor further improved the structure of the spark plug. See Image 6 , Which is a schematic diagram of the structure of the spark plug 42 of the third embodiment. The spark plug 42 includes a center electrode 421, an insulator 424 and a housing 426. The insulator 424 is a ceramic insulator and has a shaft hole extending in the axial direction. The center electrode 421 is inserted through the shaft hole of the insulator 424 and the end 4211 is exposed. The housing 426 has a hollow structure and is sleeved on the surface of the insulator 424. The open end of the housing 426 facing the cylinder is provided with a piece-shaped blocking cover 4...

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PUM

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Abstract

An ignition system (20) of an internal combustion engine, comprising a combustion chamber (21) and a spark plug (22); the combustion chamber (21) comprises a hollow cylinder (211), and the inner wall of the cylinder is provided with a spark plug installing channel (212); the spark plug (22) comprises an ignition end formed by a central electrode (221) and a grounding electrode (222); the spark plug (22) is installed in the spark plug installing channel (212), and the ignition end (A) of the spark plug is positioned inside the spark plug installing channel (212). Also disclosed is a method for installing the spark plug in the combustion chamber.

Description

Technical field [0001] The invention relates to an ignition system of an internal combustion engine and a method for installing a spark plug in a combustion chamber of the internal combustion engine. Background technique [0002] The internal combustion engine mixes liquid or gas fuel with air and directly inputs it into the high-pressure combustion chamber inside the cylinder to produce power. It is a heat engine that converts heat 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 structural schematic diagram of the ignition system of an internal combustion engine in the prior art. The ignition system of the internal combustion engine includes a combustion chamber 11, a fuel injector 12 and a spark plug 13. The combustion chamber 11 includes a hollow cylinder body 111. The upper end of the cylinder body 111 has a spark plug mounting passage 112 with a thread...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02P13/00H01T13/06H01T13/08H01T13/32H01T13/02
CPCH01T13/08
Inventor 张蝶儿
Owner 张蝶儿