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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 12, No. 10, 2015, pp. 3133-3144
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Bioline Code: st15297
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 12, No. 10, 2015, pp. 3133-3144
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Exhaust emissions of new high-performance motorcycles in hot and cold conditions
Iodice, P. & Senatore, A.
Abstract
An experimental–analytical investigation on
the emissive behavior of two high-performance motorcycles
belonging to the most recent European legislative
category was being performed by the Department of
Industrial Engineering of the University of Naples Federico
II. The study was focused on these vehicles because the
pertinent information was not very exhaustive in the scientific
literature, with particular reference to the assessment
of cold-start extra emissions of this particular two-wheeler
vehicular class (Euro-3 legislative category and
displacement >750 cm3), that is playing a rising central
role in private mobility, also in urban context. From this
motivation, in this study a calculation procedure was
designed and optimized to model the cold-start transient
behavior of motorcycles; through this methodology, it is
possible to evaluate the cold transient duration, the emitted
quantities during the cold phase and the relevant time-dependence
function. The whole procedure was applied on
the carbon monoxide and unburned hydrocarbon exhaust
cold extra emissions of the selected motorcycles, which
were measured on the chassis dynamometer. Experimental
tests were performed in cold and hot operating conditions,
during both driving cycle regulated by law and real-world
driving cycles.
Keywords
Cold-start emissions; Driving characteristics; Emission model; Motorcycle emission factors
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