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Study of the Performance of the Hydraulic Circuit of an Agricultural Machine with a Lumped Parameter Approach

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The entire hydraulic circuit of a mid size power agricultural machine (New Holland T6000 of CNH Industrial) has been studied in this paper using a lumped parameter approach, in Siemens LMS AMESim® environment. The analyzed circuit has been split in two main units: the fluid power supply unit and the high pressure circuit with users. The first one converts the inlet mechanical power into hydraulic power, while the third one converts hydraulic power in mechanical power. Each unit has been separately modeled and validated comparing the simulation data of each block with the experimental data provided by the manufacturer. The proposed target of each simulation has been achieved with a good accuracy. The model has been run in several tests where the load has been modeled using a valve and an orifice with fixed section. Tests have been run combining the fluid power supply unit and the high pressure circuit with users. In the final model, the priority valve has been modeled using three different loads called Load 1, Load 2 and Load 3. Each load simulates a user, therefore Load 1, 2 and 3 are respectively the steering, the trailer brake valve and the rest of the circuit. The model demonstrates that it is possible to predict, in a simple way, the real working conditions of the hydraulic circuit. This research  has demonstrated that the study of hydraulic circuits of agricultural machines using a lumped parameter modeling  approach is a valid instrument that can help engineers to design new solutions for energy saving or power management of complex machines.
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Fluid Power; Hydraulic Circuit; Agricultural Machine; Lumped Parameter Approach

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F., Pintore, M., Borghi, R., Morselli, A., Benevelli, B., Zardin, F., Belluzzi, 2012, “Modelling and Simulation of the Hydraulic Circuit of an Agricultural Tractor”, Proceedings of 8th FPNI PhD Symposium on fluid power, Lappeenranta, Finland, ASME

F., Pintore, B., Zardin, M., Borghi, 2008, “Fluid power supply unit for agricultural tractors: towards energy saving through simulation” Proceedings of 7th International FPNI PhD Symposium on Fluid Power.

E., Frosina, D., Buono, A., Senatore, W., Gehloff, I., Costin, 2016, “Simulation and Experimental Investigations of a Digital High Speed Close Loop Proportional Directional Valve Using a Solenoid Technology” Proceedings of the ASME/BATH 2016 Symposium on Fluid Power and Motion Control, Bath, UK.

P., Marani, G., Ansaloni, R., Paoluzzi, 2008, “Load Sensing with active regeneration system”, Proceedings of the 7th JFPS International, Symposium on Fluid Power, TOYAMA 2008, September 15-18, 2008.

E., Frosina, A., Senatore, D., Buono, M., Pavanetto, M., Olivetti, 2015, “ 3D CFD Transient Analysis of the Forces Acting on the Spool of a Directional Valve”, 69th Conference of the Italian Thermal Machines Engineering Association, Energy Procedia, 81, pp. 1090 – 1101.

M.,Borghi, B., Zardin, F., Mancarella, 2010, “Energy Dissipation Of The Hydraulic Circuit Of Remote Auxiliary Utilities Of An Agricultural Tractor”, Proceedings of the Bath/ASME Symposium on Fluid Power & Motion Control, Bath, UK.

S. J., Lin, and A., Akers, 1988, “The Control of an Axial Piston Pump: Use of a Twostage Electrohydraulic Servovalve”, Proceeding of the 43rd National Conference on Fluid Power, Chicago, p. 443.

A., Bonanno, R., Paoluzzi, S., Gessi, 2011, “Global Simulation Environment for the Global Efficiency Improvement in Agricultural Tractors”, Proceedings of The Twelfth Scandinavian International Conference on Fluid Power SICFP1, Tampere, Finland, 4, pp. 167–179.

E., Frosina, D., Buono, A., Senatore, K. A., Stelson, 2016, “A modeling approach to study the fluid dynamic forces acting on the spool of a flow control valve”, J. Fluids Eng139(1), pp. 011103 – 011115.

M., Borghi, B., Zardin, E., Specchia, F., Pintore, E., Corradini, 2011, “Displacement Control in Variable Displacement Axial Piston Swashplate Type Pumps”, Proceedings of “The Twelfth Scandinavian International Conference on Fluid Power - SICFP11, Tampere, Finland.

A., De Vizio, A., Senatore, D., Buono, E., Frosina, P., Gaudino, A., Iorio, 2014,“A simulated analysis of the lubrication circuit of an in-line twin automotive engine”, Proceedings of the SAE 2014 World Congress and Exhibition; Detroit, MI.

E., Frosina, D., Buono, A., Senatore, K. A., Stelson, 2016, “A Mathematical Model to Analyze the Torque Caused by Fluid-Solid Interaction on a Hydraulic Valve”, Journal of Fluids Engineering, 138(6).

J., Ivantysin, M., “Ivantysynova, Hydrostatic Pumps and Motors”, Akademia Books International, New Delhi 110019 India.

Montonen, J., Nokka, J., Pyrhönen, J., Virtual Wheel Loader Simulation Defining the Performance of Drive-Train Components, (2016) International Review on Modelling and Simulations (IREMOS), 9 (3), pp. 208-216.

Elaoud, A., Chehaibi, S., Amor, M., Hajtaieb, E., Flow Model of Pure Water in a Pipeline, (2013) International Review of Mechanical Engineering (IREME), 7 (1), pp. 224-230.


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