The possibilities for measurement and characterization of diesel engine fine particles - A review

Abstract

This review paper considers possible instrumentation for diesel engine fine par-ticles exhaust emission evaluation. The modern diesel engines have extremely low particles emission almost at the level of measurement error of existing gravime-tric measurement method. Since coarse particles are eliminated by new engine technologies, fine particles, with very negative effects on human health, dominate in the emission of current diesel engine. Therefore, it is necessary not only to measure mass of emitted particles but also to investigate other important particle characteristics as: particles number, particle size, particle number and mass dis-tribution, particle active surface, particle composition, etc. Therefore, existing measurement technologies used in aerosol science can be used also to study di-esel engine particles properties. This most common instrumentation in aerosol technique is shortly reviewed in the paper with special attention on candidate in-struments included in EU program on portable emissions measurement systems.