2003
DOI: 10.1016/j.atmosenv.2003.03.001
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Number size distribution of particulate emissions of heavy-duty engines in real world test cycles

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Cited by 33 publications
(25 citation statements)
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“…However, in order to sample enough particles for subsequent analysis on size distribution, appropriate sampling times usually between 20 and 120 min are required. Size distribution information with better time resolutions can be achieved by online techniques such as a scanning mobility particle sizer (SMPS) (Agarwal and Sem 1980;Knutson and Whitby 1975;Lehmann et al 2003;Sioutas et al 1999). The SMPS basically comprises a differential mobility analyzer (DMA), which realizes a size separation of particles based on electrical mobility, followed by a CPC (condensation particle counter) which counts the fractionated particles.…”
Section: Introductionmentioning
confidence: 99%
“…However, in order to sample enough particles for subsequent analysis on size distribution, appropriate sampling times usually between 20 and 120 min are required. Size distribution information with better time resolutions can be achieved by online techniques such as a scanning mobility particle sizer (SMPS) (Agarwal and Sem 1980;Knutson and Whitby 1975;Lehmann et al 2003;Sioutas et al 1999). The SMPS basically comprises a differential mobility analyzer (DMA), which realizes a size separation of particles based on electrical mobility, followed by a CPC (condensation particle counter) which counts the fractionated particles.…”
Section: Introductionmentioning
confidence: 99%
“…Aerodynamic diameter is used in ELPI while mobility diameter is used in SMPS. One Atiken mode could occur at the particle size <30 nm and it is important in differentiating gasoline vehicular exhaust plumes from diesel vehicles (Zhu et al 2002a;Gidhagen et al 2003;Lehmann et al 2003;Kittelson et al 2004;Yao et al 2005), however, they are outside of the measurement range of ELPI. Thus, we restrict our discussion to the particles >30 nm detectable by ELPI.…”
Section: Methodsmentioning
confidence: 99%
“…literature and are ascribed to soot particles (BC and condensed organics), and the formation of these particles from the growth of nucleated particles is not important (Molnár et al 2002;Gidhagen et al 2003;Lehmann et al 2003;Kittelson et al 2004).…”
Section: Characteristics Of Particle Size Distribution In Vehicle Plumesmentioning
confidence: 99%
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“…El uso de trampas (o filtros) de partículas y catalizadores de oxidación normalmente reducen la masa de hollín emitida, lo que implica una reducción en la moda acumulación. Con el fin de evaluar la influencia de estos sistemas de postratamiento sobre la distribución de tamaños de partículas se han llevado a cabo una serie de estudios experimentales [55,97,[110][111][112][113]. De acuerdo con estos trabajos, en ciertas condiciones de operación el uso de trampas de partículas y catalizadores de oxidación, contribuye con la aparición de un número elevado de partículas de la moda núcleos [55,97,110,111], lo que además queda reflejado en el análisis químico de la masa de partículas recogida en estas condiciones, donde se tiene una elevada cantidad de sulfatos y SOF [112].…”
Section: Influencia De Los Sistemas De Postratamientounclassified