The regulations governing diesel engine particulate matter (PM) and oxides of nitrogen (NOx) emissions are becoming increasingly stringent. New instrumentation is urgently needed to make accurate and precise measurements of PM emissions from low-emitting engines and emission control systems in a reasonable amount of time. Laser-induced incandescence (LII) is a technique for making temporally resolved measurements of soot volume fraction. LII offers real-time particulate concentration measurements over several orders of magnitude, and adds desirable information about particulate size and surface area. In this study, the exhaust gas recirculation (EGR) system of a heavy-duty diesel engine was tuned at eight speed/load conditions using quantitative LII. Soot concentrations measured by LII correlated strongly with measurements taken using the standard gravimetric technique and an AVL smoke meter.
- Internal Combustion Engine Division
Effect of EGR on Heavy-Duty Diesel Engine Emissions Characterized With Laser-Induced Incandescence
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Neill, WS, Smallwood, GJ, Snelling, DR, Sawchuk, RA, Clavel, D, Gareau, D, & Chippior, WL. "Effect of EGR on Heavy-Duty Diesel Engine Emissions Characterized With Laser-Induced Incandescence." Proceedings of the ASME 2002 Internal Combustion Engine Division Fall Technical Conference. Design, Application, Performance and Emissions of Modern Internal Combustion Engine Systems and Components. New Orleans, Louisiana, USA. September 8–11, 2002. pp. 489-497. ASME. https://doi.org/10.1115/ICEF2002-532
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