Comparison of different techniques for measurement of soot
           and PM emission from Diesel engine
                                   Richard Viskup
                Institute for Design and Control of Mechatronical Systems
                                Johannes Kepler University
                     Altenberger Straße 69, 4040 Linz, Austria
                                  Richard.Viskup@jku.at



        Here we present the comparison studies between different techniques for
measurement of soot and particulate matter (PM) emissions from passenger car
Diesel engine. The compared techniques include a filter paper type smoke meter,
photo-acoustic spectrometer, opacimeter, differential mobility spectrometer and laser
induced incandescence. We mainly focus our study to static and dynamic transient
measurements tests from the location position closer to the actual combustion event
- downstream of the turbine, position characterised by the higher temperature and
higher pressure of the emission gas, than the standard measurement position, in the
tailpipe of the exhaust manifold. The main task is to reveal the most accurate and
sensitive method for fast soot and PM emission measurement for this particular
measurement position. The issue of accuracy reliability of measured emission
response and understanding of variances in measured soot emission due to different
applied techniques can help to minimise the soot and a particulate matter emissions
from diesel engines and to meet the future European emission standards.




             5th international workshop on Laser-Induced Incandescence
              May 9-11, 2012, Palais des Congrès, Le Touquet, France