Electrical Waveform Measurement of Spark Energy and its Effect on Lean Burn SI Engine Combustion 2019-01-2159
The conventional transistor coil ignition system with coil-out energy up to 100 mJ might not be sufficient to establish a self-sustained flame kernel under lean combustion with strong in-cylinder flow motion. Further increase of the discharge current will decrease the voltage across the spark gap, which will affect the calculation of the energy delivered to the spark gap. In this paper, the relationship between the discharge current and gap voltage is investigated, and it is discovered that the spark energy doesn,t increase monotonously with the increase of the discharge current. However, engine test results still indicate a positive impact of discharge current amplitude on the engine performance.
Citation: Yu, X., Zhu, H., Zheng, M., and Li, L., "Electrical Waveform Measurement of Spark Energy and its Effect on Lean Burn SI Engine Combustion," SAE Technical Paper 2019-01-2159, 2019. Download Citation
Xiao Yu, Hua Zhu, Ming Zheng, Liguang Li
University of Windsor, Tongji University
2019 JSAE/SAE Powertrains, Fuels and Lubricants