Numerical modeling of the power losses in geared transmissions: Windage, churning and cavitation simulations with a new integrated approach that drastically reduces the computational effort
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Energy savings and efficient design are the new global trends. Gears are the main components in many applications like vehicle transmissions, industrial gearboxes etc. and although they are already highly efficient, there is still margin for improvement. Depending on the sector of application, energy saving produces also additional benefits such as a reduction of the pollutant emission in the automotive branch or an increased reliability/power density in compact applications like the precision planetary gearboxes. To perform efficiency improvements it is important to be able to compare different design solutions. A lot of research was made on gears but still today accurate power loss models are not available. Recently, the adoption of numerical techniques has enabled the overcoming of this problem but with the drawback of very long computational times. Considering the importance of such topic for gearbox manufacturers, the authors have developed a specific power loss calculation-tool that enables a good prediction accuracy with reasonable computational efforts. The model was validated with experimental tests performed by FZG showing good agreement
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Churning power losses of ordinary gears: A new approach based on the internal fluid dynamics simulations Concli F; Gorla C; Della Torre A; Montenegro G (2015)The increasing need of more and more efficient gearboxes implies the need of predictive models in order to compare, during the design stage, different design solutions. The models provided by literature are mostly ...
Low-loss gears for precision planetary gearboxes – Influence of the gear design on the meshing and the churning power losses Concli F; Coenen J (2015)In the field of automation, extremely accurate gearboxes are mandatory in order to ensure the adequate precision required by the automatic processes. For these kinds of applications, planetary gearboxes represent one of ...
Windage, churning and pocketing power losses of gears: different modeling approaches for different goals - Wirkungsgrad und Verluste von Zahnradgetrieben: Verschiedene Methoden für verschiedene Anwendungen Concli F; Gorla C (2016)Energy efficiency represents one of the most relevant trends in many fields, including the sector of power transmissions and gears, which are involved whenever power has to transmitted and transformed. For instance, in the ...