Date of Award
Mechanical, Automotive, and Materials Engineering
Electrode diameters, Spark ignition, Exhaust emission regulations
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
The ever-growing demands to meet the exhaust emission regulations and fuel economy requirements have driven the development of modern spark ignition (SI) engines towards lean/diluted combustion strategies and engine downsizing. Currently, the transistor coil ignition (TCI) system is still the dominant ignition system applied in SI engines. This work investigates the effects of electrode diameters on the spark discharge characteristics.
In this study, different electrode diameters (0.2 mm, 0.7 mm, 1.5 mm, and 3.5mm) are used. The electrical waveforms of the discharge process are recorded, including the breakdown voltage, the glow voltage, and the secondary current. Results show that the breakdown voltage increases with the increase of electrode diameters (including high-voltage (HV) and ground electrodes). Besides, the glow voltage decreases with the electrode diameters increase.
Shangguan, Hongyang, "A Preliminary Study of Electrode Geometry Impact on Spark Discharge Processes" (2022). Electronic Theses and Dissertations. 9123.