Summary: Emissions from ICE are important because they have a significant effect on human health and the environment. Emission levels have always been a key performance indicator, alongside engine performance. New regulation makes it necessary to take into account simultaneously the engine and the aftertreatment system performance, and this is a growing activity within CERC and the Division of Combustion. Joint research between CERC and the competence center for catalysis (KCK) has started via these projects, and collaboration is intended to grow with time. The project aims at understanding the catalytic oxidation of soot and particulate matter (PM). At the lab scale (KCK) dedicated experimental methods are being developed to reveal the kinetics during soot oxidation. The methodology uses short pulses to enable the study of accumulated species as well as reaction rates at various conversions and pre-treatment. An example is shown below.
At the engine scale dedicated engine experiments and PM collection method is being developed to enable the precise comparison of synthetic soot and engine produced PM. To further bridge between the lab scale and the engine scale, a reactor system is under development that will enable on-line sampling and in-situ analysis of the oxidation process. The project is also supported by industrial partners (Volvo Cars, AB Volvo and Haldor Topsoe)
Chalmers Transport Area of Advance, grant from the Swedish FFI program