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Electrical Filter Stage for the ELPI
Technical Paper
2002-01-0055
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Electrical low pressure impactor ELPI was modified to measure particles below 30 nanometers in aerodynamic diameter. This was accomplished by adding a filter stage to collect and measure nanoparticles. The charging unit of the instrument was modified to increase the charging efficiency of the smallest, nanometer sized, particles. The modified charging unit was calibrated and the new construction of the ELPI was tested in laboratory and in vehicle dynamometer test cell. Measurements performed in the engine test cell showed that modifications improve the size range and measurement capability of the ELPI for engine emissions.
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Authors
- Marko Marjamäki - Tampere University of Technology. Institute of Physics
- Leonidas Ntziachristos - Tampere University of Technology. Institute of Physics
- Annele Virtanen - Tampere University of Technology. Institute of Physics
- Jyrki Ristimäki - Tampere University of Technology. Institute of Physics
- Jorma Keskinen - Tampere University of Technology. Institute of Physics
- Mikko Moisio - Dekati Ltd.
- Marko Palonen - Dekati Ltd.
- Maija Lappi - VTT Energy, Engine Technology
Citation
Marjamäki, M., Ntziachristos, L., Virtanen, A., Ristimäki, J. et al., "Electrical Filter Stage for the ELPI," SAE Technical Paper 2002-01-0055, 2002, https://doi.org/10.4271/2002-01-0055.Also In
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