Browse Publications Technical Papers 1999-01-3487

A Study of Composition and Size Distribution of Particulate Matter from DI Diesel Engine 1999-01-3487

The objective of this study is to clarify the particulate composition at each particle size and the influence of engine operating conditions and fuel properties on diesel particulate size distribution. Size distribution of particulate matter emitted from the latest Japanese DI diesel engine was measured using a Cascade Impactor. Most of the particles were smaller than 10-micron aerodynamic diameter and a significant percentage of the particles were shown in the aerodynamic diameter range less than 50nm. The chemical analysis of particles collected at each stage of Cascade Impactor showed that the aerodynamic diameter of the sulfate particle was less than 50nm. A large amount of SOF and SOOT was found in small particle size range, but the percentage of SOF in the large aerodynamic diameter particles was higher than that in the small particles. Moreover, when the percentage of SOF in the total particulate matter became higher by lowering the engine torque, the particles with the small aerodynamic diameter decreased. On the other hand, the influence of the fuel properties, such as distillation characteristics, cetane number, and fuel compositions was small within the limit of usual diesel fuel properties. However, the particles of small aerodynamic diameter increased compared with usual diesel gas oil delivered from mineral oil when the n-paraffin fuel was used.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:

Fuel Formulation Effects on Passenger Car Diesel Engine Particulate Emissions and Composition


View Details


Particulate Emissions from a Common Rail Fuel Injection Diesel Engine with RME-based Biodiesel Blended Fuelling Using Thermo-gravimetric Analysis


View Details


Particle Number and Size Distribution from a Diesel Engine with Jatropha Biodiesel Fuel


View Details