Emissions of a Euro 6b Diesel Passenger Car Retrofitted with a Solid Ammonia Reduction System
| Autor: | Massimo Carriero, Pierre Bonnel, Barouch Giechaskiel, Tero Lähde, Michael Clairotte, Maurizio Maggiore, Ricardo Suarez-Bertoa |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Atmospheric Science
010504 meteorology & atmospheric sciences air pollution Air pollution 010501 environmental sciences Environmental Science (miscellaneous) lcsh:QC851-999 medicine.disease_cause 01 natural sciences Diesel fuel Ammonia chemistry.chemical_compound lean NOx trap vehicle emissions medicine solid ammonia Retrofitting NOx 0105 earth and related environmental sciences Cold start (automotive) Waste management Selective catalytic reduction Horizon 2020 prize real driving emissions nitrogen oxides chemistry selective catalytic reduction (SCR) Fuel efficiency Environmental science lcsh:Meteorology. Climatology |
| Zdroj: | Atmosphere, Vol 10, Iss 4, p 180 (2019) Atmosphere Volume 10 Issue 4 |
| ISSN: | 2073-4433 |
| Popis: | Nitrogen oxides (NOx) emissions from diesel vehicles are a serious environmental concern. Prior to the introduction of on-road tests at type approval, vehicle on-road NOx emissions were found many times higher than the applicable limits. Retrofitting an existing vehicle is a short/mid-term solution. We evaluated a NOx reduction retrofit system installed on a Euro 6b diesel passenger car both in the laboratory and on the road. The retrofit consisted of an under-floor SCR (selective catalytic reduction) for NOx catalyst in combination with a solid ammonia-based dosing system as the NOx reductant. The retrofit reduced NOx emissions from 25% (50 mg/km) to 82% (725 mg/km) both in the laboratory and on the road. The minimum reduction was achieved at cold start cycles and the maximum at hot start cycles. The retrofit had small effect on CO2 (fuel consumption). No ammonia emissions were detected and the N2O increase was negligible at cold start cycles, but up to 18 mg/km at hot start cycles. The results showed that the retrofit technology could be beneficial even for high emitting Euro 6b diesel vehicles. |
| Databáze: | OpenAIRE |
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