Tampere University 1 article published in JoVE Engineering A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump Xu Han1, Peng Zhang2, Tatiana Minav3, Yongling Fu1, Jian Fu1 1School of Mechanical Engineering and Automation, Beihang University, 2Beijing Institute of Precision Mechatronics and Controls, 3Innovative Hydraulics and Automation, Tampere University A simulation model specifically supporting the preliminary design of an electro-variable displacement pump (EVDP) is developed and partially verified by experiments. The control performance, life, reliability, etc., can all be evaluated using the proposed model, which covers the main performance requirements under the EVDP preliminary design task.