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The AVL FIRE Aftertreatment Module is part of the AVL Aftertreatment Suite, which consists of complementary modules available in AVL BOOST, AVL CRUISE and AVL FIRE comprising the most advanced and most powerful set of exhaust gas aftertreatment simulation software on the market. These tools are indispensable elements in the design, development and optimization of Diesel and gasoline aftertreatment devices, with outstanding capabilities in respect to physical and chemical modeling, applicability to all common exhaust gas aftertreatment systems and perfectly complementing each other. Simulation strategy Various aftertreatment systems are integrated in today’s vehicles and this variety will increase further to meet future emission legislation. As the systems are manifold, the requirements on the simulation software increase, as researchers and developers expect their tools to be applicable to different systems and simulation tasks. The AVL Aftertreatment Suite offers the right choice of models to comply with this request. With applicability to both Diesel and gasoline combustion systems, AVL’s tools allow the simulation of catalytic converters, Diesel particulate filters and selective catalytic reactors for various purposes as the investigation and optimization of flow uniformity, completeness of species conversation and soot regeneration, cycle emission, system heat up, ECU calibration and others. This variety on one hand and the complexity of each task on the other hand explains the need to offer suitable simulation models in tools, which differentiate in terms of dimension in space, modeling effort, simulation time and application level. The core of AVL’s strategy in terms of exhaust gas aftertreatment simulation is the integration of identical physical and chemical models in its cycle simulation software BOOST, its computational fluid dynamics software FIRE and its vehicle simulation software CRUISE. This approach ensures consistent results and enables system development and optimizations starting with simple, fast one- dimensional calculations for kinetic parameter identification and layout design and to end up with highly detailed information about the three-dimensional flow in a spatially exact resolved geometry. Simulation workflow The kinetic rate parameters (or sets of parameters) for any aftertreatment device are first identified by fast and efficient one- dimensional simulation using AVL BOOST coupled to commercial optimization software. Typically this parameter identification is based on measurements used as objective functions. After achieving the desired degree of accuracy these parameters are available for further use in both BOOST and FIRE. AVL Aftertreatment simulation workflow

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