The impact of biodiesel on particle number, size and mass emissions from a Euro4 diesel vehicle
Mark Tinsdale
Phil Price
Rui Chen
2134/8398
https://repository.lboro.ac.uk/articles/journal_contribution/The_impact_of_biodiesel_on_particle_number_size_and_mass_emissions_from_a_Euro4_diesel_vehicle/9220808
New European emissions legislation (Euro5) specifies a limit
for Particle Number (PN) emissions and therefore drives
measurement of PN during vehicle development and
homologation. Concurrently, the use of biofuel is increasing
in the marketplace, and Euro5 specifies that reference fuel
must contain a bio-derived portion.
Work was carried out to test the effect of fuels containing
different levels of Fatty Acid Methyl Ester (FAME) on
particle number, size, mass and composition. Measurements
were conducted with a Cambustion Differential Mobility
Spectrometer (DMS) to time-resolve sub-micron particles
(5-1000nm), and a Horiba Solid Particle Counting System
(SPCS) providing PN data from a Euro5-compliant
measurement system. To ensure the findings are relevant to
the modern automotive business, testing was carried out on a
Euro4 compliant passenger car fitted with a high-pressure
common-rail diesel engine and using standard homologation
procedures.
It was found that using FAME decreased total PN emissions,
by 16% over the Type I drive cycle (NEDC) for a 30%
biodiesel (B30) compared to mineral fuel (B0). FAME also
decreased accumulation mode PN and carbonaceous mass, by
20-30% for B30 versus B0, with a consequent reduction in
Diesel Particulate Filter loading rate. A 25% increase in the
nucleation mode PN was found when using B30 versus B0,
and the higher molecular-weight organic mass fraction also
increased. Increases in nitrogen oxides when using FAMEcontaining
fuels were also confirmed.
2011-05-24 11:53:47
untagged
Aerospace Engineering
Mechanical Engineering
Engineering not elsewhere classified