Abstract

Nanoparticle emissions of two 2-stroke scooters were investigated along the exhaust- and CVS-system (Constant Volume Sampling) with closed and with open line (cone). Due to their technology the scooters produce different kind of aerosol (state of oxidation and SOF-content) and in addition to that they were operated with and without oxidation catalyst. The scooters represent a modern technology with direct injection TSDI (two stroke direct injection) and with Carburetor. The tests were performed at two constant speeds of the vehicles (20 km/h and 40 km/h) according to the measuring procedures, which were established in the previous research in the Swiss Scooter Network. The nanoparticulate emissions were measured by means of SMPS (CPC) and NanoMet*). The most important results are:

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