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A Novel Approach to Hydraulic Drive Sizing Methodology and Efficiency Estimation Based on Willans Line

Original scientific paper

Journal of Sustainable Development of Energy, Water and Environment Systems
Volume 7, Issue 1, March 2019, pp 155-167
DOI: https://doi.org/10.13044/j.sdewes.d6.0238
Mihael Cipek , Joško Petrić, Danijel Pavković
Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Ivana Lučića 5, Zagreb, Croatia


A novel approach to hybrid hydraulic vehicles drive component sizing methodology based on the Willans Line method is proposed in this paper. The proposed method is used to develop a scalable mathematical model of hydraulic unit efficiency maps, thus helping the designer regarding an appropriate hydraulic unit choice when target unit data is difficult to obtain. The hydraulic unit efficiency model is also verified against catalogue data for different unit sizes, and the method is validated by means of detailed approximation error analysis. The proposed method can be particularly useful in optimal component sizing and parameterization studies of hydraulic drives in general, with possible applications to hybrid hydraulic vehicle power-trains.

Keywords: Hybrid hydraulic drive, Willans line method, Power losses, Efficiency, Component sizing.

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