The 24 presentations and numerous discussions at the Harnack Haus conference center in Berlin focused on how to minimize nitrogen-oxide emissions from internal combustion engines by exhaust gas aftertreatment. The topics ranged from primary research on new catalyst coatings to future overall system solutions for passenger cars and commercial vehicles.
One focal aspect at the conference was model-based calibration which is gaining increasing importance as a development method. “This innovative approach comes with many advantages because we can significantly reduce our dependency on scarce resources, such as test vehicles. Using optimizers, we can also speed up the pace of our development work, examine tolerances and the impact they have, for example, on on-board diagnostics, and apply calibration to derivatives more easily”, says Henning Methe, head the Diesel Exhaust Gas Aftertreatment department at IAV. His colleague, Jakob Hilgert, presented the latest advances made in developing the method from the joint project with BMW in his “Model-based SCR calibration” paper.
Beside this, Henning Methe spoke about “The impact of MinNOx on powertrain development" and Marcus Purfürst, development engineer for SCR dosing strategy at IAV, about the “Influence of soot on the transport mechanisms inside the filter wall of SCR-coated diesel particulate filters”. IAV exhibits centered around the subjects of Engineering 4.0 (new methods and tools for automotive development in the digital age), Virtual Calibration Desk (off-line calibration in the model-based development environment) and Arctic Flow, a mobile climate-controlled wind tunnel for temperatures from -25 to +40 degrees Celsius – with is also used for testing AdBlue thawing behavior in the SCR tank.
In the breaks and during the evening event, participants engaged in deep discussion on the challenges of future RDE legislation. “Everyone was agreed that this does not mean the end of the diesel engine”, Henning Methe said. “With many companies having intensified their diesel development activities, the diesel engine will continue to provide a key contribution in cutting CO2 emissions.” IAV’s next MinNOx conference will take place again in two years’ time.
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