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Accumulated carbon self-cleaning method of spark plug

A self-cleaning, spark plug technology, applied in spark plug manufacturing and other directions, to shorten the development cycle, improve spark plug carbon deposition, and improve development efficiency.

Inactive Publication Date: 2018-02-16
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention discloses a spark plug carbon deposit self-cleaning method, which solves the problem of simple and high-efficiency removal of spark plug carbon deposits

Method used

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  • Accumulated carbon self-cleaning method of spark plug
  • Accumulated carbon self-cleaning method of spark plug
  • Accumulated carbon self-cleaning method of spark plug

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, the schematic diagram of spark plug discharge in the case of no carbon deposition, the arc 2 breaks down from the center electrode 1 to the side electrode 3 during normal discharge.

[0022] Such as Figure 2 to Figure 4 As shown in the self-cleaning method of spark plug carbon deposition, at the initial stage of engine start, the ignition coil is normally ignited in the engine compression stroke. The magnetization time is t; when reaching the engine working stroke, the ignition coil finishes magnetizing during the engine working stroke, and additional ignition is added. In the initial stage of starting, the number of additional ignition times i performed for each power stroke is determined according to the actual situation, and can be greater than 1 time.

[0023] If the performance of the spark plug is normal and there i...

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Abstract

The invention discloses an accumulated carbon self-cleaning method of a spark plug. In an initial period of engine starting, an ignition coil is ignited at a normal point of the compression range of an engine and is continued to be ignited during the working process of the engine, accumulated carbon is actively cleaned by continuous ignition during the working process, at the moment, an air door of the engine is completely closed, dangers such as engine tempering and fire flamed-up cannot be caused by continuous ignition of the spark plug, a combustible mixed gas (which is already combusted) is prevented from existing around the engine after normal ignition, secondary carbon accumulation is prevented, and normal running of the engine cannot be affected.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to a self-cleaning method for spark plug carbon deposits. Background technique [0002] When the direct injection gasoline engine is started in the environment of low temperature water temperature and low intake air temperature, the atomization and evaporation effects of gasoline are not ideal, and a good gas mixture cannot be formed, which may easily lead to poor combustion in the engine cylinder and a large amount of product attached to the surface of the spark plug. carbon. When the carbon deposit on the spark plug is serious, it will cause the insulation resistance of the spark plug to drop, which will cause the gasoline engine to fail to start or misfire after starting. [0003] In winter, the problem of spark plug carbon deposition in cold regions is particularly prominent. [0004] The main methods to improve spark plug carbon deposits include optimizing spark p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01T21/04
CPCH01T21/04
Inventor 李金晶李志一王振平绳新发方秋
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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