Influence of driving cycles on Euro 3 scooter emissions and fuel consumption

Prati, Maria Vittoria and Costagliola, Maria Antonietta and Meccariello, Giovanni and Carraro, Chiara and Capobianco, Massimo and Zamboni, Giorgio (2011) Influence of driving cycles on Euro 3 scooter emissions and fuel consumption. Energy conversion and management, 52. pp. 3327-3336. ISSN 0196-8904

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Regulated pollutant emissions and fuel consumption were characterized at the exhaust of two Euro 3 4-stroke medium-size motorcycles during the execution of both standard and real world driving cycles. A principal component analysis was carried out to group in a cluster the driving cycles with similar kinematic parameters. Hot start results, analysed according to this cluster grouping, show that the main differences are explained by overall mean speed and high positive acceleration of driving cycles. Lower mean speeds produce higher CO2 emission factors, while the influence on CO and HC is more complex. NOX are not significantly affected by the driving pattern. Inside the same cluster, the whole duration of the acceleration phases could discriminate emission behaviour. In-depth analysis of cold start results was conducted in order to assess the influence of the driving cycle and vehicle characteristics on cold start duration. Cold start extra emissions are more influenced by the duration of the enrichment phase than by the catalyst light-off. The larger number of accelerations occurring during real world driving cycles produces higher variability of air fuel ratio and hence higher cold start extra emissions

Item Type: Article
Uncontrolled Keywords: Exhaust emission; Motorcycle; Driving characteristics; Real world; Hot emission factor; Cold start
Subjects: 600 Tecnologia - Scienze applicate > 620 Ingegneria e attivita' affini > 629 Altri rami dell'ingegneria > 629.2 Veicoli terrestri a motore; Cicli > 629.25 Motori (Classificare qui il controllo dell'inquinamento) > 629.2503 Motori a combustione interna
Depositing User: Rosina Serpe
Date Deposited: 05 Jan 2012 10:57
Last Modified: 05 Jan 2012 10:57

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