Diesel Exhaust Nanoparticles Characterization by Multiwavelength Techniques, Laser Induced Incandescence and ELPI Istituto Motori National Research Council Via G. Marconi, 8 80125, Naples (Italy)

Format:

Conference/Event

Author/Creator:

Di Iorio, S., author.

Conference Name:

7th International Conference on Engines for Automobile (2005-09-11 : Naples, Italy)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Naples, ITALY Consiglio Nazionale delle Ricerche 2005

Summary:

Two different optical techniques for detection, sizing and counting nanoparticles were applied to undiluted exhaust from 16 v1900 cc Common Rail diesel engine upstream and downstream a Catalyzed Diesel Particulate Filter (CDPF): Broadband UltravioletVisible Extinction and Scattering Spectroscopy (BUVESS) and Laser Induced Incandescence (LII). They are powerful "in situ" and non-intrusive techniques; they are able to measure mass concentration and size of particles, considering their chemical properties.BUVESS overcomes the intrinsic limitations of single wavelength techniques because it takes advantage of data at several wavelengths to retrieve primary particle size distribution. LII measures mean size of primary particles with a large dynamic range, not limited by aggregate size and by complex retrieving procedure.In this work, different engine operating conditions were selected in order to evaluate dynamic range of the techniques with respect to the low-mass particulate emission.The optical results were compared with those obtained by conventional methods like sampling of Particulate Matter for mass concentration and Electrical Low Pressure Impactor (ELPI) for sizing

Notes:

Vendor supplied data

Publisher Number:

2005-24-021

Access Restriction:

Restricted for use by site license