How should the risk of particle formation from lubrication oil be minimised to enable sustainable Heavy Duty Vehicle (HDV) transport systems?

The aim is to address how sustainable HDV transport systems would tackle the emerging issue of the effect of lubrication oil (LubOil) on secondary particle formation (SPF).

Focus is on atmospheric transformation of HDV emissions and particularly the impact of LubOil on the formation of primary (directly from the source) and secondary (formed in the atmosphere) particles.

The secondary particles are formed via chemical-induced processes such as oxidation of emitted compounds forming SOA/SIA (secondary organic/inorganic aerosol). For a modern traffic fleet, the amount of SOA/SIA formed is most likely much larger than the primary emissions.

From our recent findings there was a dominant non-fuel dependent source to SOA that we hypothesize to be LubOil.This work includes: Identification/quantification of key compounds from LubOil oxidationStudy the impact of reduced NOx emissions on SPF from LubOilClarify to what extent LubOil is a limitation for the cleanest technology availableScrutinise possibilities, by using best praxis, to minimise the effect of LubOilWe will use high-resolution chemical ionisation mass spectrometry to identify numerous compounds in the gas and condensed phase, and a recent developed oxidation flow reactor to simulate atmospheric oxidation.

Measurements in both lab and in real-traffic will be conducted.

The work will be carried out in collaboration with stakeholder group representatives from Swedish Transport Agency, Västtrafik, Swedish EPA and Volvo Trucks.