Circuit model and parasitic parameter extraction of the spark plug in the ignition system

Authors

QUANDI WANG
YALI ZHENG
JIHUI YU
JIN JIA

DOI

10.3906/elk-1009-751

Abstract

This paper presents a circuit model of the spark plug in the ignition system for conducted electromagnetic interference (EMI). Based on the spark plug's current discharge channel, the circuit model of the spark plug is established with the parasitic parameters and the air-gap model. The parasitic parameters of the spark plug are extracted with the finite element method, and the air-gap model of the spark plug is analyzed using the electric circuit principles and the air-discharge theory. The simulation and measurement results validate this model. Furthermore, this model confirms that the spark plug discharge is the main conducted EMI source in the ignition system based on simulation.

Keywords

Circuit model, electromagnetic interference/compatibility, finite element method, parasitic parameters, spark plug, ignition system

First Page

805

Last Page

817

Recommended Citation

WANG, QUANDI; ZHENG, YALI; YU, JIHUI; and JIA, JIN (2012) "Circuit model and parasitic parameter extraction of the spark plug in the ignition system," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 20: No. 5, Article 10. https://doi.org/10.3906/elk-1009-751
Available at: https://journals.tubitak.gov.tr/elektrik/vol20/iss5/10