A New Instrument to Measure the Mass of Nano-Particles from Internal Combustion Engines

By: Olfert Jason

28 February 2011


Particles from internal combustion engines are known to reduce visibility, harm human health, and affect climate. A new instrument called the Couette centrifugal particle mass analyzer (Couette CPMA) has been developed to measure the mass of nano-particles. A unique system of forces allows for particle mass measurements over a wide range with high resolution. The Couette CPMA was used to measure the effective density, fractal dimension, and mass concentration of particles emitted from a light-duty diesel vehicle.

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