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Euro 7/VII Concepts in the Interaction with OBD/OBM
... Simulations for health impact assessment have been done by Mulholland et al. (Mulholland et al., 2022). Gunja et al. made a study based on engine/ATS/vehicle simulations in order to analyze the extent to which new On-Board Monitoring system (OBM) could influence the function of other control systems (Gunja et al., 2022). Ragon and Rodriguez developed cost estimates for diesel emissions control technology in order to comply with forthcoming Euro VII standards (Ragon and Rodríguez, 2021). ...
... For this evaluation, there were no product tolerances or additional aging phenomena considered, which is important to show the robustness of the application and the possibilities for OBD/OBM. To find an indication on the emission impact and difficulty, please refer to [27]. Springer Nature journal content, brought to you courtesy of Springer Nature Customer Service Center GmbH ("Springer Nature"). ...
In this work, the experimental results that appeared in the recent published article “Current experimental developments in 48 V-based CI-driven SUVs in response to expected future EU7 legislation” are used to create a proper system simulation model with the simulation platform AVL CRUISE TM M. This simulation model is then used to perform a system validation in order to evaluate the configuration with a straight-four compression ignition (CI) engine and the selected exhaust aftertreatment system (EAS). The mild hybrid electric vehicle (MHEV) has an 48 V P2 architecture and an 8-gear dual-clutch transmission (DCT) as a powertrain configuration. In addition to evaluating the 48 V potential, the simulation is performed with a conventional 12 V configuration, but also including an electrically heated catalyst (EHC). As boundary conditions for the simulation, we use the different engine operating mode (EOM) calibrations from the test bed to trigger the dedicated operation modes of the internal combustion engine (ICE). For the exhaust aftertreatment system (EAS), an optimization loop is performed to obtain a layout which will be near a serial production. This includes optimizing the heat losses and reducing the thermal mass of the canning. Beside the plant models, a hybrid control unit (HCU) is used, which includes an exhaust aftertreatment system coordinator (EASC). With these functionalities, the EOMs, electrically heated catalyst (EHC), electric machine (EM) and dosing control unit (DCU) are optimized to obtain the lowest possible nitrogen oxides (NO x ) with an carbon dioxide (CO 2 ) reduction potential. The targets for the emission limits are defined on the basis of the available information from the Consortium for ultra-Low Vehicle Emissions (CLOVE) and International Council on Clean Transportation (ICCT) proposals.
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