Characterization of Particle Size Distribution of a Heavy-Duty Diesel Engine During FTP Transient Cycle Using ELPI

2000-01-2001

06/19/2000

Event
CEC/SAE Spring Fuels & Lubricants Meeting & Exposition
Authors Abstract
Content
Particle number concentrations and size distributions were measured for the diluted exhaust of a 1991 diesel engine during the US FTP transient cycle for heavy-duty diesel engines. The engine was operated on US 2-D on-highway diesel fuel. The particle measurement system consisted of a full flow dilution tunnel as the primary dilution stage, an air ejector pump as the secondary dilution stage, and an electrical low pressure impactor (ELPI) for particle size distribution measurements.
Particle number emission rate was the highest during the Los Angeles Non Freeway (LANF) and the Los Angeles Freeway (LAF) segments of the transient cycle. However, on brake specific number basis the LAF had the lowest emission level. The particle size distribution was monomodal in shape with a mode between 0.084 μm and 0.14 μm. The shape of the size distribution suggested no presence of nanoparticles below the lower detection limit of the instrument (0.032 μm), except during engine idle. Relatively high average temperature (>50°C) in the primary dilution tunnel may have prevented the formation and growth of nanoparticles. Further work and revised requirements on dilution ratio and temperature may be required if the full flow tunnel is to be used for particle size and number measurement during FTP transient operation.
Meta TagsDetails
DOI
https://doi.org/10.4271/2000-01-2001
Pages
7
Citation
Khalek, I., "Characterization of Particle Size Distribution of a Heavy-Duty Diesel Engine During FTP Transient Cycle Using ELPI," SAE Technical Paper 2000-01-2001, 2000, https://doi.org/10.4271/2000-01-2001.
Additional Details
Publisher
Published
Jun 19, 2000
Product Code
2000-01-2001
Content Type
Technical Paper
Language
English