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Characterization of physical and chemical properties of particulate emissions of a modern diesel-powered tractor in real driving conditions Tampere University
- Format:
- Book
- Conference/Event
- Author/Creator:
- Martikainen, Sampsa, author.
- Conference Name:
- SAE Powertrains, Fuels & Lubricants Meeting (2020-09-22 : Krakow, Poland)
- Language:
- English
- Physical Description:
- 1 online resource cm
- Place of Publication:
- Warrendale, PA SAE International 2020
- Summary:
- Particulate emissions deteriorate air quality, affect the human health and have an impact on climate. These effects have led to the particle emission limits, improvements on fuel quality and stricter type approval testing of vehicles and engines. However, the standards and allowed emission levels vary significantly. Some parts of the emissions, such as solid particles smaller than 23 nm, particles formed from gaseous precursors during exhaust dilution and particulate matter formed by oxidation processes in the atmosphere are currently left out of consideration. In addition, the amount of particle emission data corresponding to real driving conditions is limited.In this paper, partial flow sampling was used to sample the exhaust aerosol directly from tailpipe of a modern tractor equipped with DOC and SCR exhaust aftertreatment systems. The particle emissions were characterized with a large setup of aerosol instruments, including a TSI ultrafine CPC for particle number concentration, an aethalometer for BC mass concentration and a Soot Particle Aerosol Mass Spectrometer for particle chemical composition. The measurements were conducted on-road by assembling the measurement setup on a trailer and pulling it with the tractor. The effects of sampling parameters such as diluter type, dilution air temperature and dilution ratio on semi-volatile particle matter were investigated. In addition to driving, heavy-lift work cycles were also tested.The particle number size distribution of exhaust was typically dominated by soot mode mostly in sub-100 nanometer particle size range. The particulate mass consisted mostly of BC and organic compounds. However, the exhaust particle concentrations varied significantly, depending on driving parameters and engine loading. In certain driving situations, emission factors for particle number, particle mass and NOx were calculated and compared to current and future emission limits
- Notes:
- Vendor supplied data
- Publisher Number:
- 2020-01-2204
- Access Restriction:
- Restricted for use by site license
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