Exhaust emissions of non-road mobile machine : Real-world and laboratory studies with diesel and HVO fuels
| Autor: | Henna Saveljeff, Jenni Alanen, Erkka Saukko, Topi Rönkkö, Aleksi Malinen, Heikki Parviainen, Liisa Pirjola |
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| Přispěvatelé: | Tampere University, Physics, Research area: Aerosol Physics, Department of Physics |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Diesel engine
Diesel exhaust Particle number Tractor 020209 energy General Chemical Engineering Analytical chemistry Energy Engineering and Power Technology ENGINE NOx 02 engineering and technology ONLINE MEASUREMENTS 114 Physical sciences BIODIESEL Diesel fuel PARTICULATE-EMISSIONS VEGETABLE-OIL SIZE DISTRIBUTION 0202 electrical engineering electronic engineering information engineering Exhaust emissions Diesel exhaust fluid NUCLEATION MODE PARTICLES NANOPARTICLE FORMATION ta215 ta218 GASEOUS SULFURIC-ACID Biodiesel ta214 Organic Chemistry Selective catalytic reduction AIR-POLLUTION Particle size distribution Real-world emissions Fuel Technology 13. Climate action Environmental science HVO |
| Popis: | Exhaust emissions emitted by a non-road mobile machine were studied chasing a tractor in real-world conditions and repeating the same transient tests with a similar engine on an engine dynamometer where additionally, non-road steady state tests were carried out. The engines were equipped with an oxidation catalyst (DOC) and a selective catalytic reduction (SCR)system, and they were fuelled by fossil diesel fuel with ultra-low sulphur content and hydrotreated vegetable oil (HVO). By substituting diesel fuel with HVO the on-road emissions of nitrogen oxides (NOx) reduced 20% and particle number 44%, the emission factors being EFNOx =1.62 +/- 0.04 g/kWh and EFN = (28.2 +/- 7.8) x 10(13) #/kWh. Similar trend was observed for NOx at laboratory although the emissions were somewhat smaller than on-road. In contrast to real-world, in the laboratory experiment the EFN was only 2% smaller with HVO than with diesel, and these emission factors were almost one order of magnitude smaller than observed on-road. The number size distribution and volatility measurements showed that in real-world experiments small nucleation mode particles were formed during uphill and during downhill in engine braking conditions. These were not observed at laboratory. However, nucleation mode particles were observed in the laboratory experiments at high load steady driving conditions. At steady state tests the emissions strongly depended on engine load and engine speed with both fuels. (C) 2017 Elsevier Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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