Hertel, O, Rud Ingvardsen, C., Ellermann, T., Klenø Nøjgaard, J., 2020. Control of SCR-systems using roadside remote sensing. Results from road experiments 2019. Aarhus University, DCE – Danish Centre for Environment and Energy, 124 pp. Scientific Report No. 387 http://dce2.au.dk/pub/SR387.pdf

Summary

The company NEQ ApS and Danish Centre for Environment and Energy (DCE) have conducted a project on control of Selective Catalytic Reduction Systems (in the following referred as SCR-systems) and diesel particle filters (DPF), which was initiated in September 2019 and finalized in January 2020. The project was proposed by The Danish Environmental Protection Agency, Ministry of Environment and Food, the Danish Road Traffic Authority, and the Danish National Police. The project focuses on control of SCR cleaning systems for removal of nitrogen oxides (NO_x) in the exhaust from heavy-duty trucks and methods for identification of manipulated and defect SCR-systems (in the following we will use the term malfunctioning as covering both manipulated and defect SCR-systems). The project furthermore focuses on assessing the additional effects on environment and health related to the extra emissions from malfunctioning SCR-systems. The project is a follow up on a previous project which NEQ and DCE likewise conducted for the Danish Environmental Protection Agency, Ministry of Environment and Food, and in cooperation with the Danish Road Traffic Authority, and the Danish National Police (Ellermann et al., 2018, and http://www.ft.dk/samling/20171/-almdel/MOF/bilag/565/index.htm).