PARTICULATE SIZE ANALYSIS

This technical note presents the results of three experiments, conducted by the UK's Motor Industry Research Association (MIRA), to analyse the particulate size distribution in exhaust emissions from a wide range of engines and vehicles. MIRA has played a leading part in establishing UK protocols for determining sub-micron automotive aerosol size distributions. Its ongoing research programme has studied these distributions for diesel, petrol, natural gas, and two-stroke engines. To analyse particulate size distribution, it uses an electrical mobility analysis technique and a Scanning Mobility Particle Sizer (SMPS), to determine the populations of each size interval in the complete distribution. The particulates within the mobility analyser are charged by a radioactive Kr85 charger, then separated in the electrical field, which produces a nearly monodisperse aerosol which is pumped to a laser counter. The SMPS can measure particles with diameters between 7nm and 1000nm. In the first two experiments, particulate size distributions are given for a light diesel engine and a petrol engine running under constant condition, with respect to particulate diameter and road load. In the third experiment, particulate size distribution is given for a diesel engine through European urban drive cycles, with respect to diameter and time.

  • Availability:
  • Corporate Authors:

    THE MOTOR INDUSTRY RESEARCH ASSOCIATION

    WATLING STREET
    NUNEATON, WARWICKSHIRE  United Kingdom  CV10 0TU
  • Authors:
    • GREENWOOD, S
  • Publication Date: 1996-2

Language

  • English

Media Info

  • Pagination: p. 1-3
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00726548
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Oct 28 1996 12:00AM