b'Engineer Innovation | AutomotiveOptimizing After-Treatment Systems Performance.Using a model-based system design approach to support the engineering of exhaust systems in an RDE context component level. As the exhaust system integrates more and more sensors, actuators and connections with the ECU, plant models are necessary for the development and validation of control strategies using Hardware in the Loop (HiL) environments - which requires models running with fixed step solvers on real time hardware.In the later phases of the V-cycle, control calibration tasks are also impacted by the RDE regulations. The calibration tests must migrate from engine dyno and in-vehicle to virtual environments using simulation tools, and cover the new complexity coming with the exploding number of systems and the variety of cycles to be addressed. The change from a The growing adoption of newregulation context raises additionalcalibration workflow based on the regulations for the vehicle tail-piperequirements, and emphasizes theoptimization of a few engine operation emissions has caused significantneed to work not only on sub-systems,points to a calibration robust enough to changes in the product developmentbut also to assess the performance oftackle real life scenario - i.e. any kind of cycle of automotive OEMs. Rules havethe system as a whole - i.e. to study theoperation - strongly affects the process changed quite radically within a shortpollutant emissions conversionwith a leap forward in complexity.timeframe, shifting from regular butefficiency at vehicle level, with realistic smooth evolution of the emissions legalmission profiles. Simcenter Amesim software answers constraints we used to have year afterthis growing demand for system year. The application of Real DrivingWhen working on the concept phase,simulation involved with the RDE Emissions (RDE) strongly impacts theengineering departments have a largestandards requirements.way manufacturers engineer vehicles,number of technical options available, and this also affects suppliers who canand need to make the appropriateThe after-treatment device (monolith promote new features, tools anddecisions when it comes to selectingand/or filter) is modeled using a 0D methodologies. technologies combined within theflow approach and thermal optimal architectures. This requires fastcomponents. They can be easily The new RDE regulationswhosesimulations to quickly assess thecombined to represent a full 1D channel objective is to evaluate vehicles in realpotential of after-treatment devices inmodel, to simulate the gradient of life conditionsgenerated a moretheir vehicles architectures and variants,temperature along the monolith. This is critical need to access efficientalways trying to cover the wide range ofdefinitely a must have for a fine modeling and simulation toolsdriving cycles and conditions. prediction of the chemistry and the supporting the analysis of vehicleregeneration of filters in particular. emissions at any stage of the designDuring the design stage, a special focus cycle. System simulation used to beon the after-treatment controlWhereas energy and mass balance only deployed for R&D activities andstrategies is required, in parallel toequations are used to compute the (pre)design purpose. The newhardware detailed analysis atthermodynamic state of the gas and 16'