Real Driving Emissions of a Light-Duty Vehicle in Naples. Influence of Road Grade

Prati, Maria Vittoria; Meccariello, Giovanni; Ragione, L. Della; Costagliola, Maria Antonietta

doi:10.4271/2015-24-2509

Cited by 21 publications

(10 citation statements)

References 11 publications

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“…The relatively high NOx emissions for GDI1 over the urban segment and low NOx emissions over the uphill segment could be attributed to the engine combustion strategies associated with this vehicle's driving behavior over different driving conditions (i.e., road grade, start/stop). Our results agree with previous studies that have also shown higher NOx emissions with uphill driving (Gallus et al, 2017;Prati et al, 2015). It was also evident that for the uphill segment of the Mt.…”

Section: Gaseous Emissionssupporting

confidence: 93%

On-road gaseous and particulate emissions from GDI vehicles with and without gasoline particulate filters (GPFs) using portable emissions measurement systems (PEMS)

McCaffery

Zhu

et al. 2020

Science of The Total Environment

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Editor: Karl RopkinsThis study assessed the on-road gaseous and particulate emissions from three current technology gasoline direct injection (GDI) vehicles using portable emissions measurement systems (PEMS). Two vehicles were also retrofitted with catalyzed gasoline particulate filters (GPFs). All vehicles were exercised over four routes with different topological and environmental characteristics, representing urban, rural, highway, and high-altitude driving conditions. The results showed strong reductions in particulate mass (PM), soot mass, and particle number emissions with the use of GPFs. Particle emissions were found to be highest during urban and high-altitude driving compared to highway driving. The reduction efficiency of the GPFs ranged from 44% to 99% for overall soot mass emissions. Similar efficiencies were found for particle number and PM mass emissions. In most cases, nitrogen oxide (NOx) emissions showed improvements with the catalyzed GPFs in the underfloor position with the additional catalytic volume. No significant differences were seen in carbon dioxide (CO 2 ) and carbon monoxide (CO) emissions with the vehicles retrofitted with GPFs.

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Section: Gaseous Emissionssupporting

confidence: 93%

On-road gaseous and particulate emissions from GDI vehicles with and without gasoline particulate filters (GPFs) using portable emissions measurement systems (PEMS)

McCaffery

Zhu

et al. 2020

Science of The Total Environment

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“…The real driving NO X , CO and soot emission rates are also exhibiting same behavior , but the amount of gaseous and both particulates seems to be higher especially at takeoffs from stations which is followed by an acceleration section to reach the cruising speed. The results are quite harmonious with the research that was made by Prati et al (2015).…”

Section: Effect Of Altitude Changesupporting

confidence: 87%

An Assessment of Real-World Driving Emissions and Fuel Consumption of a Diesel Bus with Using a Portable Emissions and Fuel Consumption Measurement System: İstanbul Bus Rapid Transit-Metrobus

Özener¹

2019

Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Pollutants from combustion engine powered public transportation are showing great importance in terms of air quality, human being health and also the global warming. The amount of fuel consumed during transportation is another factor that should be taken in to account because of economic aspects. In this context, a part of one of the world's biggest public transportation axle-Istanbul Metrobus public transportation systemwhich is using a dedicated line is analyzed via using on board emission measurement system and onboard fuel consumption metering devices. The relevant controller area network data was collected during cruises. The fuel consumption and emissions results are analyzed regarding to cruise statistical data, driving modes, road gradient and vehicle specific power data and per passenger statistic. A strong correlation between vehicle specific power and fuel consumption and emissions is shown. The effect of acceleration and velocity are analyzed. Fuel consumption and emission data obtained regarding to the topography indicated that, topography should be used with vehicle properties in public transportation planning. Also it was evaluated that the portable emission measurement systems and mobile fuel consumption measurements can be a part of engine calibration development for environmentally friendly and economic public transportation.

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“…In recent years, many research papers on cold start emissions have been published (i.a. [13,17,19,24,30]). The need to take into account emissions from the cold start phase has been noticed not only in Europe but also worldwide.…”

Section: Introductionmentioning

confidence: 99%

Cold start emissions from a gasoline engine in RDE tests at different ambient temperatures

Kurtyka¹,

Pielecha²

2020

Combustion Engines

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The implementation of the 3rd package of the RDE test procedure has extended the test method by considering emissions from a cold start period into the total exhaust emissions from a vehicle. The article presents the research results of exhaust emissions of a vehicle equipped with a gasoline engine. The tests were carried out at two different ambient temperatures, in line with the requirements of the RDE test procedure for passenger cars, meeting the Euro 6d-Temp emissions standard. The obtained results were analyzed, i.e. there were compared the engine and vehicle operating parameters and the values of road exhaust emissions during the cold start at two different ambient temperatures. The summary presents the shares of the cold start phase for each exhaust emission compound in the urban part of the test and the entire RDE test, depending on the ambient temperature (8ºC and 25ºC).

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Real Driving Emissions of a Light-Duty Vehicle in Naples. Influence of Road Grade

Cited by 21 publications

References 11 publications

On-road gaseous and particulate emissions from GDI vehicles with and without gasoline particulate filters (GPFs) using portable emissions measurement systems (PEMS)

On-road gaseous and particulate emissions from GDI vehicles with and without gasoline particulate filters (GPFs) using portable emissions measurement systems (PEMS)

An Assessment of Real-World Driving Emissions and Fuel Consumption of a Diesel Bus with Using a Portable Emissions and Fuel Consumption Measurement System: İstanbul Bus Rapid Transit-Metrobus

Cold start emissions from a gasoline engine in RDE tests at different ambient temperatures

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