EMI Principle and Suppression Method in Vehicle Ignition System

Author

Quandi Wang ; Zongyu An ; Yongming Yang ; Chengjun Su

Author_Institution

State Key Lab. of Power Transm. Equip. & Syst. Security & New Technol., Chongqing Univ., Chongqing, China

fYear

2012

fDate

19-21 June 2012

Firstpage

1

Lastpage

4

Abstract

Vehicle ignition system is considered to be the main electromagnetic interference source. The electromagnetic interference (EMI) principle of ignition system was firstly analyzed, and harness trouble-shooting related to EMI was also tested. Results indicate that the spark discharge between spark plug electrodes is the main interference source in ignition system. Then, the conducted paths and the reason of radiated emission were detailedly discussed. Finally, a power supply wire EMI mixed filter was designed and implemented on the basis of analysis results. Experiment results indicate the filter can reduce the noise of power-wire in the broadband range. Meanwhile, the radiation emission level from power wire is also reduced observably.

Keywords

electric vehicles; electromagnetic interference; interference suppression; spark plugs; EMI principle method; EMI suppression method; electromagnetic interference principle method; electromagnetic interference source; electromagnetic interference suppression method; interference source; power supply wire EMI mixed filter; power-wire noise; spark discharge; spark plug electrodes; vehicle ignition system; Discharges (electric); Electromagnetic interference; Ferrites; Ignition; Sparks; Vehicles; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Field Problems and Applications (ICEF), 2012 Sixth International Conference on

Conference_Location

Dalian, Liaoning

Print_ISBN

978-1-4673-1333-9

Type

conf

DOI

10.1109/ICEF.2012.6310311

Filename

6310311