面向点火系统电磁兼容预测的火花塞动态电路模型

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Abstract The high voltage pulse generated by the spark plug discharge in ignition system on an automotive is a main source of EMI. In order to predicate the electromagnetic compatibility (EMC) of the ignition system, the accurate model of the spark plug is needed. This paper extracts the parasitic parameter of the spark plug by finite element method (FEM) approach at first; then through analyzing discharge characteristics and mechanism of the spark plug discharge, the air-gap of the spark plug is treated as non-linear resistance model; finally the dynamic circuit model of the spark plug which includes the static parasitic capacitance and the non-linear resistance is established. The model is verified by measurement and simulation results.

Key words： Spark plug ignition system electromagnetic interference (EMI) finite element method (FEM) parasitic capacitance dynamic circuit model

Received: 25 August 2009 Published: 07 March 2014

PACS:	U463.64
	TM151
	TM13

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	Articles by authors
	Zheng Yali
	Yu Jihui
	Wang Quandi
	Jia Jin
	Liu Qingsong
	Li Xu

Cite this article:

Zheng Yali,Yu Jihui,Wang Quandi等. Dynamic Circuit Model of the Spark Plug for EMCPrediction of Ignition System[J]. Transactions of China Electrotechnical Society, 2011, 26(2): 8-13.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2011/V26/I2/8

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