News
August 2025
Real-world non-exhaust emissions
Researchers from Tampere University measured real-world non-exhaust emissions using two different fully electric vehicles. The tests were conducted in a remote location at Alastaro. By chasing the EVs at different driving speeds, doing drive-by tests and braking next to instrumentation, experiment aimed to differentiate effect of vehicle characteristics and sources to non-exhaust emissions. Among the tested scenarios, harsh braking events produced the most pronounced emissions.
June 2025
Emissions of a new and old mining machine with fossil and renewable diesel
VTT researchers measured exhaust emissions of two mine scaling machines of mining contractor Tapojärvi with portable emission measurement system in Outokumpu Kemi mine. One of these machines was an older unit and the other a brand new one with the latest exhaust aftertreatment system. Also, the effect of fuel was studied by operating machines with conventional fossil diesel and HVO-type renewable diesel.
Scientists of NEX-EL-project presented results of experimental activities at ETH Nanoparticles Conference in Zürich
The 2025 ETH Nanoparticles Conference had a special sessions related to emissions of brakes and tires.
Jussi Hoivala from Tampere University presented a poster from results of brake emission tests with a miniaturized tribological test setup. These results were received during Jussi’s research visit at Lund University.
Anssi Järvinen from VTT presented results from the experimental campaign conducted in the project in Espoo, in November 2024. See presentation slides:
https://www.nanoparticles.ch/archive/2025_Jaervinen_PR.pdf
All conference presentations and links to the Book of Abstracts:
https://www.nanoparticles.ch/2025_ETH-NPC-28.html
November 2024
Emissions of new mining explosives
A joint experimental campaign was organized between NEX-EL project partners to study emissions of mining explosives. Gaseous emissions of new hydrogen peroxide -based mining explosive was measured in the Outokumpu Kemi mine and compared with emissions from conventional ammonium nitrate -based emulsion explosives. Preliminary results indicate that hydrogen peroxide composition produced significantly less nitrogen oxides and carbon monoxide.
Brake Dust Campaign
In a joint measurement campaign of the NEX-EL project by VTT, Tampere University, and the Finnish Meteorological Institute, particle emissions from car brakes were studied. Read more.
Project news 19.4.2024
Non-exhaust emissions in urban street environment FMI
(In Finnish – NEX-EL-projekti tutkii liikenteen ei-pakokaasuperäisiä päästöjä kaupunkialueella)
Measurements in urban street environment, Helsinki (FMI).
Project news 12.10.2023
Non-exhaust emissions in electrifying mining and urban environment (NEX-EL)