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Optimization of hydro-mechanical model of a multiway valve used in automotive thermal management

Improving fuel economy and reducing the Greenhouse-Gas emissions have been the determining factors in the development and implementation of innovative automotive technologies. Engine thermal management is one of the research fields that tries to solve these issues. Thermal management can be applied when controlling temperatures in different cooling circuits with an electronically actuated valve, which respects certain thermal management strategies. This control varies depending on several parameters such as temperature, load and engine rotational speed. This paper is part of a larger work that aims to improve the robustness of this valve design process since the early steps while minimizing the torque requirements of the DC-actuator. The first part of the paper will describe the mechanical concept of the valve and The second part will be focused on the hydro-mechanical model that is composed of four different sub-models that has been developed in order to simulate the multi-physical environment and so was validated based on experimental measurement. The third part is dedicated to discuss optimization results of a particle swarm based bi-objective optimization (PSO) loop applied on a simpler model, which helps to determine an optimal geometrical configuration. The optimal geometrical configuration found after running the optimization loop is to be tested in the multi-physical global model and results of the simulation are to be shown in future works.