NOx Emissions below the Prospective EURO VII Limit on a Retrofitted Heavy-Duty Vehicle
In this study, a EURO VI heavy-duty vehicle (HDV) has been retrofitted with an exhaust gas heater (EGH) with the objective to reduce its NOx emissions below the current EURO VI and EURO VII limits. Results show that an EGH of 5 kW is enough to produce a significant NOx emissions abatement below the...
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MDPI AG
2022-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/3/1189 |
| _version_ | 1797489247743115264 |
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| author | Joan Ximinis Albert Massaguer Eduard Massaguer |
| author_facet | Joan Ximinis Albert Massaguer Eduard Massaguer |
| author_sort | Joan Ximinis |
| collection | DOAJ |
| description | In this study, a EURO VI heavy-duty vehicle (HDV) has been retrofitted with an exhaust gas heater (EGH) with the objective to reduce its NOx emissions below the current EURO VI and EURO VII limits. Results show that an EGH of 5 kW is enough to produce a significant NOx emissions abatement below the EURO VI and EURO VII limits. A conventional after-treatment system heated using a 5 kW EGH could work at its maximum catalytic conversion efficiency of 95% regardless of the engine operating speed. Consequently, exhaust gas heaters are a potential solution to high NOx emission at low engine regimes. With the use of an EGH, urea can be injected sooner, and catalytic reactions could cut much more NOx emissions. However, its incorporation would increase the vehicle’s fuel consumption by 1.47% if it is connected directly to the vehicle’s electrical system. Finally, it is also demonstrated that an automotive thermoelectric generator (ATEG) can supply the energy required by the EGH through the conversion of the waste heat from exhaust gases into electricity. This system could work electrically autonomous so there is no extra consumption of fuel. |
| first_indexed | 2024-03-10T00:14:48Z |
| format | Article |
| id | doaj.art-2e9b810013cf4eb8ba16113a16283cc2 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T00:14:48Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
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| spelling | doaj.art-2e9b810013cf4eb8ba16113a16283cc22023-11-23T15:53:26ZengMDPI AGApplied Sciences2076-34172022-01-01123118910.3390/app12031189NOx Emissions below the Prospective EURO VII Limit on a Retrofitted Heavy-Duty VehicleJoan Ximinis0Albert Massaguer1Eduard Massaguer2Department of Mechanical Engineering and Industrial Construction, University of Girona, C/Universitat de Girona 4, 17003 Girona, SpainDepartment of Mechanical Engineering and Industrial Construction, University of Girona, C/Universitat de Girona 4, 17003 Girona, SpainDepartment of Mechanical Engineering and Industrial Construction, University of Girona, C/Universitat de Girona 4, 17003 Girona, SpainIn this study, a EURO VI heavy-duty vehicle (HDV) has been retrofitted with an exhaust gas heater (EGH) with the objective to reduce its NOx emissions below the current EURO VI and EURO VII limits. Results show that an EGH of 5 kW is enough to produce a significant NOx emissions abatement below the EURO VI and EURO VII limits. A conventional after-treatment system heated using a 5 kW EGH could work at its maximum catalytic conversion efficiency of 95% regardless of the engine operating speed. Consequently, exhaust gas heaters are a potential solution to high NOx emission at low engine regimes. With the use of an EGH, urea can be injected sooner, and catalytic reactions could cut much more NOx emissions. However, its incorporation would increase the vehicle’s fuel consumption by 1.47% if it is connected directly to the vehicle’s electrical system. Finally, it is also demonstrated that an automotive thermoelectric generator (ATEG) can supply the energy required by the EGH through the conversion of the waste heat from exhaust gases into electricity. This system could work electrically autonomous so there is no extra consumption of fuel.https://www.mdpi.com/2076-3417/12/3/1189exhaust gas heaterheavy duty vehiclepollutant emissionsretrofitNOx reduction |
| spellingShingle | Joan Ximinis Albert Massaguer Eduard Massaguer NOx Emissions below the Prospective EURO VII Limit on a Retrofitted Heavy-Duty Vehicle Applied Sciences exhaust gas heater heavy duty vehicle pollutant emissions retrofit NOx reduction |
| title | NOx Emissions below the Prospective EURO VII Limit on a Retrofitted Heavy-Duty Vehicle |
| title_full | NOx Emissions below the Prospective EURO VII Limit on a Retrofitted Heavy-Duty Vehicle |
| title_fullStr | NOx Emissions below the Prospective EURO VII Limit on a Retrofitted Heavy-Duty Vehicle |
| title_full_unstemmed | NOx Emissions below the Prospective EURO VII Limit on a Retrofitted Heavy-Duty Vehicle |
| title_short | NOx Emissions below the Prospective EURO VII Limit on a Retrofitted Heavy-Duty Vehicle |
| title_sort | nox emissions below the prospective euro vii limit on a retrofitted heavy duty vehicle |
| topic | exhaust gas heater heavy duty vehicle pollutant emissions retrofit NOx reduction |
| url | https://www.mdpi.com/2076-3417/12/3/1189 |
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