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The Scientific World Journal
Volume 2014, Article ID 795180, 8 pages
Research Article

Contactless Electric Igniter for Vehicle to Lower Exhaust Emission and Fuel Consumption

1Department of Electronic Engineering, National Kaohsiung First University of Science and Technology, Yanchao, Kaohsiung 824, Taiwan
2Graduate Institute of Engineering Science and Technology, National Kaohsiung First University of Science and Technology, Yanchao, Kaohsiung 824, Taiwan

Received 31 August 2013; Accepted 6 December 2013; Published 5 February 2014

Academic Editors: H. Aras and K. Feng

Copyright © 2014 Chih-Lung Shen and Jye-Chau Su. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


An electric igniter for engine/hybrid vehicles is presented. The igniter comprises a flyback converter, a voltage-stacked capacitor, a PIC-based controller, a differential voltage detector, and an ignition coil, of which structure is non-contact type. Since the electric igniter adopts a capacitor to accumulate energy for engine ignition instead of traditional contacttype approach, it enhances the igniting performance of a spark plug effectively. As a result, combustion efficiency is promoted, fuel consumption is saved, and exhaust emission is reduced. The igniter not only is good for fuel efficiency but also can reduce HC and CO emission significantly, which therefore is an environmentally friendly product. The control core of the igniter is implemented on a single chip, which lowers discrete component count, reduces system volume, and increases reliability. In addition, the ignition timing can be programmed so that a timing regulator can be removed from the proposed system, simplifying its structure. To verify the feasibility and functionality of the igniter, key waveforms are measured and real-car experiments are performed as well.