Optical on-board diagnostic (OBD) soot sensor development for high-sulfer Diesel engine exhaust
Description
This study is to develop a portable optical On-Board Diagnostic (OBD) sensor measures the concentration of exhaust gas in accordance with vehicle exhaust gas regulations. Molecular absorption spectroscopy, which exploits the principle that each molecule has a unique absorption spectrum, offers sensitive selectivity and rapid response times in the order of a few nanoseconds for absorption and relaxation processes. Quartz-Enhanced Photoacoustic Spectroscopy (QEPAS), which uses spectroscopy as a measurement technique and QTF as a detector, was selected as the target development sensor. The results were obtained through driving cycle experiments applied to actual vehicles, and the performance was proven through sensor calibration. Our team plan to miniaturize it by introducing an embedded system in the future.
People
Joon Hyeok Hong (홍준혁)
