SAE Technical Paper Series 2003
DOI: 10.4271/2003-01-1888
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Particle Emissions Characteristics of Different On-Road Vehicles

Abstract: Due to the stringent emission standards set worldwide, particulate matter (PM) emissions from diesel vehicles have been significantly curtailed in the last decade, and are expected to be reduced even further in the future. This evolution has brought forward two main issues: whether PM emissions should only be regulated for diesel vehicles and whether gasoline powered vehicles can be further neglected from PM emission inventories. This paper addresses these issues comparing the characteristics of particle emiss… Show more

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Cited by 17 publications
(13 citation statements)
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“…Whereas PM mass measurements were performed for all moped classes, particle number is not available for pre-Euro mopeds. Our results show that particulate mass emissions of mopeds are very similar to those of a modern diesel car (Prati et al, 2003) even though the composition is quite different: almost 95% consists of volatiles (Ntziachristos et al, 2003). A PM emission decrease of almost 80% was observed for Euro 1 and Euro 2 mopeds against pre-Euro models.…”
Section: Emissions Of Fine Particles and Organic Compounds From Mopedsupporting
confidence: 59%
See 1 more Smart Citation
“…Whereas PM mass measurements were performed for all moped classes, particle number is not available for pre-Euro mopeds. Our results show that particulate mass emissions of mopeds are very similar to those of a modern diesel car (Prati et al, 2003) even though the composition is quite different: almost 95% consists of volatiles (Ntziachristos et al, 2003). A PM emission decrease of almost 80% was observed for Euro 1 and Euro 2 mopeds against pre-Euro models.…”
Section: Emissions Of Fine Particles and Organic Compounds From Mopedsupporting
confidence: 59%
“…The choice of this particular vehicle class was due to the need to consider modern lowemitter vehicles which are also representative of the Italian in-use car fleet. Table 7 reports emissions values of CO, HC, NO x , PM, PN, benzene, 1,3-butadiene, formaldehyde, and benzo(a)pyrene measured in this paper for Euro 2 mopeds and mean emission factors of the same compounds for gasoline and diesel Euro 3 cars found in the literature (Aako et al, 2006;Ntziachristos et al, 2003). To allow for the variability in Euro 2 class mopeds derived from including 2-S and 4-S in the same class, both minimum and maximum emission factors are considered.…”
Section: Discussionmentioning
confidence: 94%
“…However, in general, more than 99% of particulate emissions by mass from diesel cars are PM2.5 (27). Hence, for all practical purposes, changes in PM10 and PM2.5 emissions are equal.…”
Section: Methodsmentioning
confidence: 99%
“…[71], se encontró una disminución de la moda acumulación con el del grado de dilución hasta un valor de este para el que dicha moda se mantenía constante, junto con una reducción progresiva de la moda núcleos. En otros trabajos, sin embargo, se obtuvo una moda acumulación invariante frente al grado de dilución, aunque la tendencia de la moda núcleos en algunos casos se reducía [72] y en otros aumentaba [70,73,74]. Un resultado concluyente de estos estudios es la invariabilidad de la moda acumulación en ciertas condiciones de dilución, y la alta sensibilidad de la moda núcleos ante los cambios en las condiciones de dilución.…”
Section: Grado De Diluciónunclassified
“…Estos trabajos indican que la reducción de la temperatura en el punto de mezcla induce a la formación de un número mayor de partículas de la moda núcleos [37,40,45,70,72,[75][76][77] El enfriamiento de los gases de escape sin dilución o con un grado de dilución bajo, causa una gran nucleación/condensación de los compuestos volátiles; mientras que una temperatura de dilución alta evita los procesos de nucleación/condensación de los compuestos volátiles que aún se encuentran en fase gaseosa. Por otra parte, si además de precalentar el aire de dilución se utiliza un grado de dilución suficientemente alto, el grado de saturación puede mantenerse lo suficientemente bajo en todo momento.…”
Section: Temperatura De Diluciónunclassified