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A spark plug gap prediction method and device

A prediction method and spark plug technology, applied in the direction of instrumentation, calculation, electrical digital data processing, etc., can solve problems such as lack of generality, no solution proposed, failure to meet ignition system fault diagnosis, etc.

Active Publication Date: 2018-09-25
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But their common problem is that the realization of the existing technology must be manually observed by professionals, the results obtained are not general, too subjective, quantitative analysis cannot be realized, and it cannot be predicted with the spark plug gap, which cannot meet the requirements of the ignition system in production. The need for troubleshooting
[0004] For the problems in the prior art, no effective solution has been proposed yet

Method used

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  • A spark plug gap prediction method and device
  • A spark plug gap prediction method and device
  • A spark plug gap prediction method and device

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Embodiment Construction

[0049] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be further clearly, completely and detailedly described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0050] Based on the above purpose, according to the first embodiment of the present invention, a spark plug gap prediction method is provided.

[0051] Such as figure 1 As shown, the spark plug gap prediction method provided according to the embodiment of the present invention includes:

[0052] Step S101, collecting original ignition waveform signals of different...

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Abstract

The invention discloses a spark plug gap predicating method and device. The method comprises the steps of collecting original ignition waveform signals of different spark plug gaps under various working conditions; carrying out wavelet threshold optimal denoising on the original ignition waveform signals, and generating denoising ignition wave signals; calculating a box dimension characteristic of each denoising ignition wave signal; carrying out quadratic function fitting on the spark plug gaps and the corresponding box dimension characteristics; collecting an ignition waveform signal of one spark plug gap to be predicated, and predicating the spark plug gap according to a fitting function. The spark plug gap predicating method and device provided by the invention can be used for objectively and quantitatively calculating and predicating the spark plug gap, and providing an operable solution for ignition system fault diagnosis.

Description

technical field [0001] The invention relates to the technical field of engines, in particular, to a spark plug gap prediction method and device. Background technique [0002] The ignition system is the core system of a gasoline engine. Engine performance, including power, economy, safety, noise and exhaust emissions, is directly affected by the performance and use of the ignition system. Ignition system failures account for the largest proportion of engine failures . The state of the spark plug is a very important factor to determine the performance of the ignition system. The engine performance tester can measure the variation of each parameter of the ignition waveform when the gap of the spark plug changes. It is very meaningful to conduct qualitative and quantitative analysis on the shape and parameters of the ignition waveform, and to study the changes in the secondary breakdown voltage, spark initiation, spark duration, terminal voltage, and closing time when the spark...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 蒋淑霞
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY