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In this paper a model based design approach is described helping to improve the process of automotive embedded software development. The methodology contains a prototypical development process which shows great improvement towards the more and more upcoming non-functional demands faced by automotive software development like reusability, scalability and resource efficiency. This is achieved by use of increased formalism, continuousness and open standards. The whole hereby proposed and surrounding development process is introduced including all essential artifacts, process steps and formal or automated transitions between them. Significantly important is the Abstract Automotive Software Architecture (ABSOFA), a meta model based software architecture modeling concept for structuring automotive software fully abstracting from realization, implementation and platform details. The meta model as well as the modeling language itself are based on the Unified Modeling Language (UML).

In this article a new zero-dimensional model is presented for simulating the cylinder pressure in direct injection diesel engines. The model enables the representation of current combustion processes considering multiple injections, high exhaust gas recirculation rates, and turbocharging. In these methods solely cycle-resolved, scalar input variables from the electronic control unit in combination with empirical parameters are required for modeling. The latter are adapted automatically to different engines or modified applications using measured cylinder pressure traces. The verification based on measurements within the entire operating range from engines of different size and type proves the universal applicability and high accuracy of the proposed method.