TY - JOUR
T1 - A Method for Measuring Particle Number Emissions from Vehicles Driving on the Road
AU - Shi, Ji
AU - Harrison, Roy
AU - Evans, Douglas
AU - Khan, Aftab
AU - Barnes, C
AU - Carter, G
PY - 2002/1/1
Y1 - 2002/1/1
N2 - Earlier research has demonstrated that the conditions of dilution of engine exhaust gases profoundly influence the size distribution and total number of particles emitted. Since real world dilution conditions are variable and therefore difficult to simulate, this research has sought to develop and validate a method for measuring particle number emissions from vehicles driving past on a road. This has been achieved successfully using carbon dioxide as a tracer of exhaust gas dilution. By subsequent adjustment of data to a constant dilution factor, it is possible to compare emissions from different vehicles using different technologies and fuels based upon real world emission data. Whilst further optimisation of the technique, especially in terms of matching the instrument response times is desirable, the measurements offer useful insights into emissions from gasoline and diesel vehicles, and the substantial proportion of particles emitted in the 3-7 nanometre size range.
AB - Earlier research has demonstrated that the conditions of dilution of engine exhaust gases profoundly influence the size distribution and total number of particles emitted. Since real world dilution conditions are variable and therefore difficult to simulate, this research has sought to develop and validate a method for measuring particle number emissions from vehicles driving past on a road. This has been achieved successfully using carbon dioxide as a tracer of exhaust gas dilution. By subsequent adjustment of data to a constant dilution factor, it is possible to compare emissions from different vehicles using different technologies and fuels based upon real world emission data. Whilst further optimisation of the technique, especially in terms of matching the instrument response times is desirable, the measurements offer useful insights into emissions from gasoline and diesel vehicles, and the substantial proportion of particles emitted in the 3-7 nanometre size range.
KW - vehicle particle emission
KW - emission rate
KW - atmospheric dilution
KW - nanoparticle
UR - http://www.scopus.com/inward/record.url?scp=0036200747&partnerID=8YFLogxK
U2 - 10.1080/09593332508618430
DO - 10.1080/09593332508618430
M3 - Article
C2 - 11918399
VL - 23
SP - 1
EP - 14
JO - Environmental Technology
JF - Environmental Technology
ER -