Particles in car emissions and immissions

Project name

Particles in car emissions and immissions

Project duration

01.09.2019 - 31.05.2020

Brief description

Particulate emissions (soot, ultrafine particles) from motor vehicles are considered to be particularly relevant to health (diesel soot is classified as carcinogenic). The following apply
With regard to ultrafine particles (UFP; <100 nm), "modern" passenger car engines (petrol and diesel; since Euro 5 at the latest) are to be assessed as particularly emission-relevant due to the working processes (direct injection into the cylinder at high pressure). However, the increase in the corresponding pollutant concentration to be expected with increasing market penetration has not been recognizable in immission measurements in recent years (2010-2018). It is currently not known whether this is due to the different measurement methods for emissions and immissions, any particle conversion processes after leaving the emission source and/or the still low fleet penetration of EURO5 and EURO6dtemp cars.
The aim of the project is to determine the actual particle emission behavior of EURO5 and EURO6dtemp cars (both petrol and diesel) on the basis of measurements in diluted exhaust gas and at the same time to obtain information on the behavior of the emitted particles in the ambient air. Conclusions for the further development of the concept for the Saxon air quality monitoring network are to be derived from the findings.

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