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SCR technology is becoming more and more important for the segment of diesel-driven passenger cars. Due to space and functional demands the dependency of SCR performance on a uniform supply of ammonia into the catalytic substrates is highly increased. Both an even distribution of the AdBlue® spray and a completed evaporation and decomposition of the droplets are the key to achieve the desired ammonia spread. Evaluation of the influence of spray quality on the AdBlue® decomposition and catalyst performance are leading to a new approach in dosing, using a special nozzle and air-supply strategy. The resulting new technology is evaluated and compared to the state of the art.

Feedback systems with robust and reliable position sensor systems are becoming increasingly important in complex mechatronic systems, e.g. intelligent headlamps. For this reason, innovative MEMS based magnet sensors, such as 3D Hall sensors in particular, seem predestined for such measuring tasks. In order to achieve a sufficiently precise estimation or evaluation of the suitability of Hall sensors at the concept preparation stage while minimizing effort, suitable system models are to be used to help systematically analyze the wide range of solution variants with computer support. This is explained in more detail in this paper.