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Application of automotive safety design methodologies to the development of Euro 7 emission control systems including on board monitoring

Kmieć Mateusz, Weber Matthias, Romijn Marcel, Matthews Dave

Combustion Engines

2022

R. 61, nr 1

75--82

Euro7 and California HD-OBD present a shift of approach in emissions control. Legislative bodies concentrate on individual vehicle conformity to standards during its lifetime on top of type approval processes in test environment. The main change is NOx trackers in software and sensors in the exhaust pipes of all vehicles. As a consequence of constant supervision not only single point faults are taken into account in the analysis, but also cumulative parameter drift of components due to aging. To achieve normative requirements and prevent emission standards violation during exploitation, methodologies known from automotive functional safety domain and SOTIF are used to evaluate and modify a propulsion system design. An illustrative example of analysis is presented in the paper.

Using Similarity of Graphs in Evaluation of Designs

Strug B.

Machine Dynamics Research

2015

Vol. 39, No. 1

103-113

This paper deals with evaluating design on the basis of their internal structures in the form of graphs. A set containing graphs representing solutions of similar design tasks is used to search for frequently occurring subgraphs. On the basis of the results of the search the quality of new solutions is evaluated. Moreover the common subgraphs found are considered to be design patterns characterizing a given design task solutions. The paper presents the generic concept of such an approach as well as illustratesit by the small example of floor layout design.