SAE Technical Paper Series 2005
DOI: 10.4271/2005-01-0194
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Modern Diesel Particulate Matter Measurements and the Application of Lessons Learned to 2007 Levels and Beyond

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Cited by 7 publications
(6 citation statements)
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“…Background contamination has a more pronounced effect at ULE levels, thus emissions comprise a lower percentage of the total mass measured and become difficult to distinguish gravimetrically. Chemical reconstruction was likely capable of detection because it is less susceptible to the effects of temperature, humidity, and conditioning than gravimetric methods (Stetter et al 2005). IPSD method was likely capable of detection because of its differential electrical mobility scanner and nearly instantaneous data collection.…”
Section: Methods Comparisonmentioning
confidence: 99%
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“…Background contamination has a more pronounced effect at ULE levels, thus emissions comprise a lower percentage of the total mass measured and become difficult to distinguish gravimetrically. Chemical reconstruction was likely capable of detection because it is less susceptible to the effects of temperature, humidity, and conditioning than gravimetric methods (Stetter et al 2005). IPSD method was likely capable of detection because of its differential electrical mobility scanner and nearly instantaneous data collection.…”
Section: Methods Comparisonmentioning
confidence: 99%
“…The very low mass collected on filters used to measure particulate matter emissions from ULE engines, along with the variable contribution of semi-volatile organic material to the particulate matter mass, leads to potentially large and variable artifacts for filter-based mass measurements (Stetter et al 2005).…”
Section: Emissions Compositions In Old and Modern Enginesmentioning
confidence: 99%
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“…No obstante la distribución de tamaños de partículas presentada por [1] es válida para la mayor parte de los motores fabricados en la última década, pero una nueva conceptualización de la distribución de tamaños más acorde a la emisión de los motores Diesel de última generación ha sido propuesta por Stetter et al, (2005) [50], cuya representación se muestra en la figura 2.5.2. En ella se muestra una distribución de tamaños donde la moda núcleos y acumulación aparecen parcialmente solapadas y no totalmente separadas como la conceptualización de [1], lo que viene a representar una forma más acertada el tipo de distribuciones de tamaños que se suelen medir en los motores actuales.…”
Section: Coagulaciónunclassified
“…El efecto del inicio de la inyección sobre la distribución de tamaños también ha sido evaluado por algunos investigadores [78,87,90,93], aunque la conclusión de estos estudios es que no existe una tendencia clara en la influencia de este parámetro, pues en algunos casos se detectaron reducciones en la moda de acumulación con el retraso de la inyección mientras que en otros se observó un aumento de la misma [50].…”
Section: Tiempo De Residenciaunclassified