Effect of After-Treatment Systems on Size Distribution of Heavy Duty Diesel Exhaust Aerosol

Kati Vaaraslahti; Annele Virtanen; Jyrki M. Ristimäki; Jorma Keskinen

doi:10.4271/2004-01-1980

Effect of After-Treatment Systems on Size Distribution of Heavy Duty Diesel Exhaust Aerosol

Kati Vaaraslahti, Annele Virtanen, Jyrki M. Ristimäki, Jorma Keskinen

Not published at VTT

Tampere University of Technology (TUT)

Research output: Contribution to journal › Article in a proceedings journal › Scientific › peer-review

9 Citations (Scopus)

Abstract

The effect of after-treatment on size distribution of heavy duty diesel exhaust is studied with a measurement system sampling directly from the tailpipe. After-treatment systems studied are diesel particulate filter (DPF), oxidation catalyst, and selective catalytic reduction (SCR) technique. Only low level sulfur fuels are used. DPF effectively reduces accumulation mode particles but the formation of ultrafine particles was observed at high load. Oxidation catalyst and SCR system slightly reduce accumulation mode in low load, probably because of the higher volatile fraction of the particles at low load. At high load, ultrafine particles are formed with both catalyst systems resulting most probably from SO3 formation over the oxidation catalyst. With SCR, possible ammonia slip may also contribute to particle formation.

Original language	English
Article number	2004-01-1980
Number of pages	8
Journal	SAE Technical Paper Series
DOIs	https://doi.org/10.4271/2004-01-1980
Publication status	Published - 8 Jun 2004
MoE publication type	A4 Article in a conference publication
Event	2004 SAE Fuels and Lubricants Meeting and Exhibition - Toulouse, France Duration: 8 Jun 2004 → 10 Jun 2004

Access to Document

10.4271/2004-01-1980

Cite this

@article{d216db4175cd4600aabd025bd1555b6a,

title = "Effect of After-Treatment Systems on Size Distribution of Heavy Duty Diesel Exhaust Aerosol",

abstract = "The effect of after-treatment on size distribution of heavy duty diesel exhaust is studied with a measurement system sampling directly from the tailpipe. After-treatment systems studied are diesel particulate filter (DPF), oxidation catalyst, and selective catalytic reduction (SCR) technique. Only low level sulfur fuels are used. DPF effectively reduces accumulation mode particles but the formation of ultrafine particles was observed at high load. Oxidation catalyst and SCR system slightly reduce accumulation mode in low load, probably because of the higher volatile fraction of the particles at low load. At high load, ultrafine particles are formed with both catalyst systems resulting most probably from SO3 formation over the oxidation catalyst. With SCR, possible ammonia slip may also contribute to particle formation.",

author = "Kati Vaaraslahti and Annele Virtanen and Ristim{\"a}ki, {Jyrki M.} and Jorma Keskinen",

year = "2004",

month = jun,

day = "8",

doi = "10.4271/2004-01-1980",

language = "English",

journal = "SAE Technical Paper Series",

issn = "0148-7191",

publisher = "Society of Automotive Engineers SAE",

note = "2004 SAE Fuels and Lubricants Meeting and Exhibition ; Conference date: 08-06-2004 Through 10-06-2004",

}

TY - JOUR

T1 - Effect of After-Treatment Systems on Size Distribution of Heavy Duty Diesel Exhaust Aerosol

AU - Vaaraslahti, Kati

AU - Virtanen, Annele

AU - Ristimäki, Jyrki M.

AU - Keskinen, Jorma

PY - 2004/6/8

Y1 - 2004/6/8

N2 - The effect of after-treatment on size distribution of heavy duty diesel exhaust is studied with a measurement system sampling directly from the tailpipe. After-treatment systems studied are diesel particulate filter (DPF), oxidation catalyst, and selective catalytic reduction (SCR) technique. Only low level sulfur fuels are used. DPF effectively reduces accumulation mode particles but the formation of ultrafine particles was observed at high load. Oxidation catalyst and SCR system slightly reduce accumulation mode in low load, probably because of the higher volatile fraction of the particles at low load. At high load, ultrafine particles are formed with both catalyst systems resulting most probably from SO3 formation over the oxidation catalyst. With SCR, possible ammonia slip may also contribute to particle formation.

AB - The effect of after-treatment on size distribution of heavy duty diesel exhaust is studied with a measurement system sampling directly from the tailpipe. After-treatment systems studied are diesel particulate filter (DPF), oxidation catalyst, and selective catalytic reduction (SCR) technique. Only low level sulfur fuels are used. DPF effectively reduces accumulation mode particles but the formation of ultrafine particles was observed at high load. Oxidation catalyst and SCR system slightly reduce accumulation mode in low load, probably because of the higher volatile fraction of the particles at low load. At high load, ultrafine particles are formed with both catalyst systems resulting most probably from SO3 formation over the oxidation catalyst. With SCR, possible ammonia slip may also contribute to particle formation.

U2 - 10.4271/2004-01-1980

DO - 10.4271/2004-01-1980

M3 - Article in a proceedings journal

SN - 0148-7191

JO - SAE Technical Paper Series

JF - SAE Technical Paper Series

M1 - 2004-01-1980

T2 - 2004 SAE Fuels and Lubricants Meeting and Exhibition

Y2 - 8 June 2004 through 10 June 2004

ER -

Effect of After-Treatment Systems on Size Distribution of Heavy Duty Diesel Exhaust Aerosol

Abstract

Access to Document

Fingerprint

Cite this