Real-Time Measurement of NOx Emissions from Modern Diesel Vehicles Using On-Board Sensors
In this work, the performance of on-board vehicle exhaust emission sensors is investigated and compared to reference laboratory and on-road instrumentation for two modern diesel light-duty commercial vehicles, type-approved as Euro 6d-TEMP-EVAP-ISC and Euro 6d-ISC-FCM. The first step of the analysis...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/22/8766 |
| _version_ | 1797465410668331008 |
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| author | Tommaso Selleri Christian Ferrarese Jacopo Franzetti Ricardo Suarez-Bertoa Dario Manara |
| author_facet | Tommaso Selleri Christian Ferrarese Jacopo Franzetti Ricardo Suarez-Bertoa Dario Manara |
| author_sort | Tommaso Selleri |
| collection | DOAJ |
| description | In this work, the performance of on-board vehicle exhaust emission sensors is investigated and compared to reference laboratory and on-road instrumentation for two modern diesel light-duty commercial vehicles, type-approved as Euro 6d-TEMP-EVAP-ISC and Euro 6d-ISC-FCM. The first step of the analysis was to perform emissions tests in the laboratory and compare the NOx concentrations registered by the vehicle sensors available at the engine-out and tailpipe positions with those recorded by reference laboratory instrumentation. In a second step, tests were also conducted on road, comparing the performance of on-board sensors with those of Portable Emission Measurement System (PEMS) analysers, which were taken as references. The uncertainty related to exhaust flow measurements was also addressed. In particular, emissions factors calculated using the flow rates measured either in the laboratory or on-road were compared to those obtained by computing exhaust flows with on-board recorded data available from the vehicle electronic control unit. Results showed maximum deviations on the order of 34% in laboratory tests and of 21% during on-road measurements. Finally, measurements were also carried out during a diesel particulate filter regeneration event, showing the good performance of the on-board sensors even when high NOx concentrations were present. These conditions can be similar to those experienced in the case of an after-treatment system malfunction or of a high-emitting event, and can thus be of interest for real-time malfunction identification and monitoring. |
| first_indexed | 2024-03-09T18:21:03Z |
| format | Article |
| id | doaj.art-e04d9847c281447b95205dcc92a272ed |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T18:21:03Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-e04d9847c281447b95205dcc92a272ed2023-11-24T08:18:13ZengMDPI AGEnergies1996-10732022-11-011522876610.3390/en15228766Real-Time Measurement of NOx Emissions from Modern Diesel Vehicles Using On-Board SensorsTommaso Selleri0Christian Ferrarese1Jacopo Franzetti2Ricardo Suarez-Bertoa3Dario Manara4European Commission, Joint Research Centre (JRC), 21027 Ispra, ItalyEuropean Commission, Joint Research Centre (JRC), 21027 Ispra, ItalyEuropean Commission, Joint Research Centre (JRC), 21027 Ispra, ItalyEuropean Commission, Joint Research Centre (JRC), 21027 Ispra, ItalyEuropean Commission, Joint Research Centre (JRC), 21027 Ispra, ItalyIn this work, the performance of on-board vehicle exhaust emission sensors is investigated and compared to reference laboratory and on-road instrumentation for two modern diesel light-duty commercial vehicles, type-approved as Euro 6d-TEMP-EVAP-ISC and Euro 6d-ISC-FCM. The first step of the analysis was to perform emissions tests in the laboratory and compare the NOx concentrations registered by the vehicle sensors available at the engine-out and tailpipe positions with those recorded by reference laboratory instrumentation. In a second step, tests were also conducted on road, comparing the performance of on-board sensors with those of Portable Emission Measurement System (PEMS) analysers, which were taken as references. The uncertainty related to exhaust flow measurements was also addressed. In particular, emissions factors calculated using the flow rates measured either in the laboratory or on-road were compared to those obtained by computing exhaust flows with on-board recorded data available from the vehicle electronic control unit. Results showed maximum deviations on the order of 34% in laboratory tests and of 21% during on-road measurements. Finally, measurements were also carried out during a diesel particulate filter regeneration event, showing the good performance of the on-board sensors even when high NOx concentrations were present. These conditions can be similar to those experienced in the case of an after-treatment system malfunction or of a high-emitting event, and can thus be of interest for real-time malfunction identification and monitoring.https://www.mdpi.com/1996-1073/15/22/8766on-board monitoringreal-time measurementsreal-world emissionsSCR after-treatment malfunctionreal-time monitoring |
| spellingShingle | Tommaso Selleri Christian Ferrarese Jacopo Franzetti Ricardo Suarez-Bertoa Dario Manara Real-Time Measurement of NOx Emissions from Modern Diesel Vehicles Using On-Board Sensors Energies on-board monitoring real-time measurements real-world emissions SCR after-treatment malfunction real-time monitoring |
| title | Real-Time Measurement of NOx Emissions from Modern Diesel Vehicles Using On-Board Sensors |
| title_full | Real-Time Measurement of NOx Emissions from Modern Diesel Vehicles Using On-Board Sensors |
| title_fullStr | Real-Time Measurement of NOx Emissions from Modern Diesel Vehicles Using On-Board Sensors |
| title_full_unstemmed | Real-Time Measurement of NOx Emissions from Modern Diesel Vehicles Using On-Board Sensors |
| title_short | Real-Time Measurement of NOx Emissions from Modern Diesel Vehicles Using On-Board Sensors |
| title_sort | real time measurement of nox emissions from modern diesel vehicles using on board sensors |
| topic | on-board monitoring real-time measurements real-world emissions SCR after-treatment malfunction real-time monitoring |
| url | https://www.mdpi.com/1996-1073/15/22/8766 |
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