Jorma Keskinen

Summary

Affiliation: Tampere University of Technology
Country: Finland

Publications

  1. ncbi request reprint Can real-world diesel exhaust particle size distribution be reproduced in the laboratory? A critical review
    Jorma Keskinen
    Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, Tampere, Finland
    J Air Waste Manag Assoc 60:1245-55. 2010
  2. ncbi request reprint Effect of oxidation catalysts on diesel soot particles
    Kati Vaaraslahti
    Tampere University of Technology, Aerosol Physics Laboratory, P O Box 692, FIN 33101 Tampere, Finland
    Environ Sci Technol 40:4776-81. 2006
  3. ncbi request reprint Study of Miller timing on exhaust emissions of a hydrotreated vegetable oil (HVO)-fueled diesel engine
    Juha Heikkilä
    Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, Tampere, Finland
    J Air Waste Manag Assoc 62:1305-12. 2012
  4. doi request reprint Effect of fuel injection pressure on a heavy-duty diesel engine nonvolatile particle emission
    Tero Lähde
    Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, PO Box 599, FIN 33720 Tampere, Finland
    Environ Sci Technol 45:2504-9. 2011
  5. ncbi request reprint Heavy duty diesel engine exhaust aerosol particle and ion measurements
    Tero Lähde
    Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, P O Box 692, FIN 33101, Tampere, Finland
    Environ Sci Technol 43:163-8. 2009
  6. doi request reprint Reductions in particulate and NO(x) emissions by diesel engine parameter adjustments with HVO fuel
    Matti Happonen
    Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, P O Box 692, FI 33101 Tampere, Finland
    Environ Sci Technol 46:6198-204. 2012
  7. ncbi request reprint Hydrocarbon condensation in heavy-duty diesel exhaust
    Jyrki Ristimäki
    Aerosol Physics Laboratory, Institute of Physics, Tampere University of Technology, P O Box 692, FI 33101 Tampere, Finland, USA
    Environ Sci Technol 41:6397-402. 2007
  8. doi request reprint Nanoparticle emissions from a heavy-duty engine running on alternative diesel fuels
    Juha Heikkilä
    Tampere University of Technology, Physics Department, Aerosol Physics Laboratory, P O Box 692, FI 33101 Tampere, Finland
    Environ Sci Technol 43:9501-6. 2009
  9. ncbi request reprint Cold temperature PM emissions measurement: method evaluation and application to light duty vehicles
    Jyrki Ristimäki
    Aerosol Physics Laboratory, Institute of Physics, Tampere University of Technology, PO Box 692, FIN 33101 Tampere, Finland
    Environ Sci Technol 39:9424-30. 2005
  10. ncbi request reprint Nucleation mode particles with a nonvolatile core in the exhaust of a heavy duty diesel vehicle
    Topi Rönkkö
    Aerosol Physics Laboratory, Institute of Physics, Tampere University of Technology, P O Box 692, FI 33101 Tampere, Finland
    Environ Sci Technol 41:6384-9. 2007

Collaborators

  • Annele Virtanen
  • Tero Lähde
  • Liisa Pirjola
  • Albert Manninen
  • Juha Heikkilä
  • Kati Vaaraslahti
  • Jyrki Ristimäki
  • Timo Murtonen
  • Topi Rönkkö
  • Matti Happonen
  • Kalle Lehto
  • Teemu Sarjovaara
  • Martti Larmi
  • Maija Lappi
  • Barouch Giechaskiel
  • Anu Solla
  • Anssi Arffman
  • Päivi Aakko-Saksa
  • Mikko Lemmetty
  • Dieter Rothe
  • Jonna Kannosto
  • Päivi Aakko
  • Hannu Vesala
  • Matti Maricq

Detail Information

Publications16

  1. ncbi request reprint Can real-world diesel exhaust particle size distribution be reproduced in the laboratory? A critical review
    Jorma Keskinen
    Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, Tampere, Finland
    J Air Waste Manag Assoc 60:1245-55. 2010
    ..Nevertheless, the trends are reproduced, including those caused by differences in vehicle speed and engine load, engine and aftertreatment technology, as well as fuel and lubricant composition...
  2. ncbi request reprint Effect of oxidation catalysts on diesel soot particles
    Kati Vaaraslahti
    Tampere University of Technology, Aerosol Physics Laboratory, P O Box 692, FIN 33101 Tampere, Finland
    Environ Sci Technol 40:4776-81. 2006
    ....
  3. ncbi request reprint Study of Miller timing on exhaust emissions of a hydrotreated vegetable oil (HVO)-fueled diesel engine
    Juha Heikkilä
    Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, Tampere, Finland
    J Air Waste Manag Assoc 62:1305-12. 2012
    ..Overall, the study indicates that paraffinic HVO fuels are suitable for emission reduction with valve and injection timing adjustment and thus provide possibilities for engine manufacturers to meet the strictening emission limits...
  4. doi request reprint Effect of fuel injection pressure on a heavy-duty diesel engine nonvolatile particle emission
    Tero Lähde
    Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, PO Box 599, FIN 33720 Tampere, Finland
    Environ Sci Technol 45:2504-9. 2011
    ..The core mode emission and also the size of the mode increased with increasing NOx emission while the soot mode size and emission decreased simultaneously...
  5. ncbi request reprint Heavy duty diesel engine exhaust aerosol particle and ion measurements
    Tero Lähde
    Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, P O Box 692, FIN 33101, Tampere, Finland
    Environ Sci Technol 43:163-8. 2009
    ..The absence of charged particles in the nucleation mode of diesel particulate filtered exhaust excludes the ion mediated process as a nucleation particle formation mechanism...
  6. doi request reprint Reductions in particulate and NO(x) emissions by diesel engine parameter adjustments with HVO fuel
    Matti Happonen
    Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, P O Box 692, FI 33101 Tampere, Finland
    Environ Sci Technol 46:6198-204. 2012
    ..As a result of this comparison, a linear correlation between FSN and total particulate surface area at low FSN region was found...
  7. ncbi request reprint Hydrocarbon condensation in heavy-duty diesel exhaust
    Jyrki Ristimäki
    Aerosol Physics Laboratory, Institute of Physics, Tampere University of Technology, P O Box 692, FI 33101 Tampere, Finland, USA
    Environ Sci Technol 41:6397-402. 2007
    ..The size resolved changes in particle effective density, fractal dimension, volatile mass fractions and mass are all in agreement with theoretical considerations of condensation...
  8. doi request reprint Nanoparticle emissions from a heavy-duty engine running on alternative diesel fuels
    Juha Heikkilä
    Tampere University of Technology, Physics Department, Aerosol Physics Laboratory, P O Box 692, FI 33101 Tampere, Finland
    Environ Sci Technol 43:9501-6. 2009
    ..This indicates that the formation mechanism of the core particles is different for RME. This can be explained by differences in the fuel characteristics...
  9. ncbi request reprint Cold temperature PM emissions measurement: method evaluation and application to light duty vehicles
    Jyrki Ristimäki
    Aerosol Physics Laboratory, Institute of Physics, Tampere University of Technology, PO Box 692, FIN 33101 Tampere, Finland
    Environ Sci Technol 39:9424-30. 2005
    ..Use of cold dilution air in the room-temperature test cell increases the number and size of nuclei particles; however, the effect of dilution airtemperature was inconclusive in the cold test cell...
  10. ncbi request reprint Nucleation mode particles with a nonvolatile core in the exhaust of a heavy duty diesel vehicle
    Topi Rönkkö
    Aerosol Physics Laboratory, Institute of Physics, Tampere University of Technology, P O Box 692, FI 33101 Tampere, Finland
    Environ Sci Technol 41:6384-9. 2007
    ..The core particles have grown because of the condensation of semivolatile material, mainly hydrocarbons, during the dilution...
  11. ncbi request reprint Effect of open channel filter on particle emissions of modern diesel engine
    Juha Heikkilä
    Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, Tampere, Finland
    J Air Waste Manag Assoc 59:1148-54. 2009
    ..The overall particle number reduction was 66-99%, and for accumulation-mode particles the number concentration reduction was 62-69%, both depending on the engine load...
  12. doi request reprint Dependence between nonvolatile nucleation mode particle and soot number concentrations in an EGR equipped heavy-duty Diesel engine exhaust
    Tero Lähde
    Aerosol Physics Laboratory, Tampere University of Technology, P O Box 599, FIN 33720, Tampere, Finland
    Environ Sci Technol 44:3175-80. 2010
    ....
  13. ncbi request reprint Fluorescence cross sections of bioaerosols and suspended biological agents
    Albert Manninen
    Optics Laboratory, Department of Physics, Tampere University of Technology, P O Box 692, FI 33101 Tampere, Finland
    Appl Opt 48:4320-8. 2009
    ..Moreover, the fluorescence emission, excited above 320 nm is more intensive for the aerosols than the suspensions...
  14. ncbi request reprint Effect of lubricant on the formation of heavy-duty diesel exhaust nanoparticles
    Kati Vaaraslahti
    Tampere University of Technology, Aerosol Physics Laboratory, P O Box 692 FIN 33101 Tampere, Finland
    Environ Sci Technol 39:8497-504. 2005
    ..Storage effects of CRDPF had an effect on nanoparticle concentration as the emissions of nanoparticles decreased over time...
  15. ncbi request reprint Nucleation mode formation in heavy-duty diesel exhaust with and without a particulate filter
    Kati Vaaraslahti
    Institute of Physics, Aerosol Physics Laboratory, Tampere University of Technology, P O Box 692, FIN 33101 Tampere, Finland
    Environ Sci Technol 38:4884-90. 2004
    ..Using a thermodenuder confirms that the nucleation mode particles are semivolatile in nature...
  16. ncbi request reprint Effect of engine load on diesel soot particles
    Annele K K Virtanen
    Aerosol Physics Laboratory, Institute of Physics, Tampere University of Technology, PO Box 692, FIN 33101 Tampere, Finland
    Environ Sci Technol 38:2551-6. 2004
    ..6 and 2.8. Both electron microscopy and measurements of aerodynamic size versus mobility size suggest that the morphology of particles in different size regimes vary, with the large particles being less compact than the small ones...