Semi-volatile species in the exhaust can condense on the primary particulate matter (PM) forming significant secondary PM mass downstream1. We developed a new thermographic technique to measure the volatility of a particle population. The instrument is called vapor-particle separator (VPS)2. A two-parameter model was used to interpret the thermographic data3. These two parameters define volatilization potential and thermodynamic capacity of the particles. The volatization potential delineates the unique particle volatility, while the thermodynamic capacity illustrates the work required to eliminate the particles. The thermodynamic capacity is found much smaller for small particles than that for large particles.
Thermographic Measurements of Volatile Particulate Matter
Sae Technical Papers
JSAE/SAE 2015 International Powertrains, Fuels & Lubricants Meeting ; 2015
2015-09-01
Conference paper
English
Thermographic-Phosphor Temperature Measurements: Commercial and Defense-Related Applications
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