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The reduction of automotive fuel consumption is a major challenge of automotive OEMs and suppliers. It is expected, that during the next decade the majority of vehicles will still be driven by internal combustion engines (ICE). As a rule of thumb about 2/3 of the fuel energy fed to the engine is converted into heat and is used only occasionally and only partly for heating the interior. One promising technology to convert exhaust heat into usable electric energy is the thermoelectric generator (TEG) [1]. As this component has significant retroactive effects on the automotive system, a system-level model of the car was developed to calculate the net benefit of the TEG for steady-state operating-points as well as for dynamic driving cycles. This paper presents a model and simulation results of an ICE-powered vehicle with thermoelectric wasteheat-utilization. The model uses component models of the AlternativeVehicles-, VehicleInterfaces-, PowerTrain-and YaFluid-Library.

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The AlternativeVehicles Library (AV) allows to calculate the energy demand and optimize the energy management for conventional and alternative vehicle concepts. The components provided focus on the simulation of alternative power trains. Therefore models of energy storages and energy converters such as electric drives and fuel cells are included. The library was developed within the European research project Eurosyslib. The current version includes contributions of the DLR Institute of Robotics and Mechatronics and is distributed by the Bausch-Gall GmbH. Within this paper architecture and components of the AlternativeVehicles library are described. Exemplarily fuel consumptions of a conventional vehicle and a parallel hybrid vehicle are compared.