Characterization of Real-World Pollutant Emissions and Fuel Consumption of Heavy-Duty Diesel Trucks with Latest Emissions Control
Heavy-duty diesel trucks (HDDTs) comprise a key source of road transport emissions and energy consumption worldwide mainly due to the growth of road freight traffic during the last two decades. Addressing their air pollutant and greenhouse gas emissions is therefore required, while accurate emission...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-09-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/10/9/535 |
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| author | Christos Keramydas Leonidas Ntziachristos Christos Tziourtzioumis Georgios Papadopoulos Ting-Shek Lo Kwok-Lam Ng Hok-Lai Anson Wong Carol Ka-Lok Wong |
| author_facet | Christos Keramydas Leonidas Ntziachristos Christos Tziourtzioumis Georgios Papadopoulos Ting-Shek Lo Kwok-Lam Ng Hok-Lai Anson Wong Carol Ka-Lok Wong |
| author_sort | Christos Keramydas |
| collection | DOAJ |
| description | Heavy-duty diesel trucks (HDDTs) comprise a key source of road transport emissions and energy consumption worldwide mainly due to the growth of road freight traffic during the last two decades. Addressing their air pollutant and greenhouse gas emissions is therefore required, while accurate emission factors are needed to logistically optimize their operation. This study characterizes real-world emissions and fuel consumption (FC) of HDDTs and investigates the factors that affect their performance. Twenty-two diesel-fueled, Euro IV to Euro VI, HDDTs of six different manufacturers were measured in the road network of the Hong Kong metropolitan area, using portable emission measurement systems (PEMS). The testing routes included urban, highway and mixed urban/highway driving. The data collected corresponds to a wide range of driving, operating, and ambient conditions. Real-world distance- and energy-based emission levels are presented in a comparative manner to capture the effect of after-treatment technologies and the role of the evolution of Euro standards on emissions performance. The emission factors’ uncertainty is analyzed. The impact of speed, road grade and vehicle weight loading on FC and emissions is investigated. An analysis of diesel particulate filter (DPF) regenerations and ammonia (NH<sub>3</sub>) slip events are presented along with the study of Nitrous oxide (N<sub>2</sub>O) formation. The results reveal deviations of real-world HDDTs emissions from emission limits, as well as the significant impact of different operating and driving factors on their performance. The occasional high levels of N<sub>2</sub>O emissions from selective catalytic reduction equipped HDDTs is also revealed, an issue that has not been thoroughly considered so far. |
| first_indexed | 2024-12-10T07:09:27Z |
| format | Article |
| id | doaj.art-197362d3e1b849a98c920c49eb60e2d2 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-12-10T07:09:27Z |
| publishDate | 2019-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-197362d3e1b849a98c920c49eb60e2d22022-12-22T01:58:06ZengMDPI AGAtmosphere2073-44332019-09-0110953510.3390/atmos10090535atmos10090535Characterization of Real-World Pollutant Emissions and Fuel Consumption of Heavy-Duty Diesel Trucks with Latest Emissions ControlChristos Keramydas0Leonidas Ntziachristos1Christos Tziourtzioumis2Georgios Papadopoulos3Ting-Shek Lo4Kwok-Lam Ng5Hok-Lai Anson Wong6Carol Ka-Lok Wong7Department of Supply Chain Management, International Hellenic University, GR 60100 Katerini, GreeceDepartment of Mechanical Engineering, Aristotle University of Thessaloniki, P.O. Box 483, GR 54124 Thessaloniki, GreeceEmisia S.A., 21 Antoni Tritsi str., P.O. Box 8138, GR 57001 Thessaloniki, GreeceEmisia S.A., 21 Antoni Tritsi str., P.O. Box 8138, GR 57001 Thessaloniki, GreeceEnvironmental Protection Department, Hong Kong SAR Government, Hong Kong, ChinaEnvironmental Protection Department, Hong Kong SAR Government, Hong Kong, ChinaEnvironmental Protection Department, Hong Kong SAR Government, Hong Kong, ChinaEnvironmental Protection Department, Hong Kong SAR Government, Hong Kong, ChinaHeavy-duty diesel trucks (HDDTs) comprise a key source of road transport emissions and energy consumption worldwide mainly due to the growth of road freight traffic during the last two decades. Addressing their air pollutant and greenhouse gas emissions is therefore required, while accurate emission factors are needed to logistically optimize their operation. This study characterizes real-world emissions and fuel consumption (FC) of HDDTs and investigates the factors that affect their performance. Twenty-two diesel-fueled, Euro IV to Euro VI, HDDTs of six different manufacturers were measured in the road network of the Hong Kong metropolitan area, using portable emission measurement systems (PEMS). The testing routes included urban, highway and mixed urban/highway driving. The data collected corresponds to a wide range of driving, operating, and ambient conditions. Real-world distance- and energy-based emission levels are presented in a comparative manner to capture the effect of after-treatment technologies and the role of the evolution of Euro standards on emissions performance. The emission factors’ uncertainty is analyzed. The impact of speed, road grade and vehicle weight loading on FC and emissions is investigated. An analysis of diesel particulate filter (DPF) regenerations and ammonia (NH<sub>3</sub>) slip events are presented along with the study of Nitrous oxide (N<sub>2</sub>O) formation. The results reveal deviations of real-world HDDTs emissions from emission limits, as well as the significant impact of different operating and driving factors on their performance. The occasional high levels of N<sub>2</sub>O emissions from selective catalytic reduction equipped HDDTs is also revealed, an issue that has not been thoroughly considered so far.https://www.mdpi.com/2073-4433/10/9/535heavy-duty diesel truck (HDDT)portable emission measurement system (PEMS)emission factorfuel consumptionafter-treatment technologyEuro standard |
| spellingShingle | Christos Keramydas Leonidas Ntziachristos Christos Tziourtzioumis Georgios Papadopoulos Ting-Shek Lo Kwok-Lam Ng Hok-Lai Anson Wong Carol Ka-Lok Wong Characterization of Real-World Pollutant Emissions and Fuel Consumption of Heavy-Duty Diesel Trucks with Latest Emissions Control Atmosphere heavy-duty diesel truck (HDDT) portable emission measurement system (PEMS) emission factor fuel consumption after-treatment technology Euro standard |
| title | Characterization of Real-World Pollutant Emissions and Fuel Consumption of Heavy-Duty Diesel Trucks with Latest Emissions Control |
| title_full | Characterization of Real-World Pollutant Emissions and Fuel Consumption of Heavy-Duty Diesel Trucks with Latest Emissions Control |
| title_fullStr | Characterization of Real-World Pollutant Emissions and Fuel Consumption of Heavy-Duty Diesel Trucks with Latest Emissions Control |
| title_full_unstemmed | Characterization of Real-World Pollutant Emissions and Fuel Consumption of Heavy-Duty Diesel Trucks with Latest Emissions Control |
| title_short | Characterization of Real-World Pollutant Emissions and Fuel Consumption of Heavy-Duty Diesel Trucks with Latest Emissions Control |
| title_sort | characterization of real world pollutant emissions and fuel consumption of heavy duty diesel trucks with latest emissions control |
| topic | heavy-duty diesel truck (HDDT) portable emission measurement system (PEMS) emission factor fuel consumption after-treatment technology Euro standard |
| url | https://www.mdpi.com/2073-4433/10/9/535 |
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