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A Commercial Excavator: Analysis, Modelling and Simulation of the Hydraulic Circuit
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 24, 2012 by SAE International in United States
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The paper addresses some aspects of an ongoing research on a commercial compact excavator. The interest is focused on the analysis and modelling of the whole hydraulic circuit that, beside a load sensing variable displacement pump, features a stack of nine proportional directional control valves modules of which seven are of the load sensing type. Loads being sensed are the boom swing, boom, stick and bucket, right and left track motors and work tools; instead, the blade and the turret swing users do not contribute to the load sensing signal. Of specific interest are the peculiarities that were observed in the stack. In fact, to develop an accurate AMESim modelling, the stack was dismantled and all modules analysed and represented in a CAD environment as 3D parts. The load sensing flow generation unit was replaced on the vehicle by another one whose analysis and modelling have been developed using available design and experimental data. Although both the Hydraulic Component Design library as well as the Planar Mechanical library were used extensively in the process of modelling the entire circuit, some simplifications became necessary and are detailed in the paper. As the modelling phase was developing, a number of field experiments on the vehicle were also performed: these served the purpose of providing reference data to the end of progressing with the validation phase of the AMESim model. Regarding predictive simulation results, these are appropriately consistent with gathered experimental outcomes. The AMESim model will be instrumental for upcoming analyses that foresee the substitution of the original stack with other load sensing post-compensated modules so to assess with reasonable confidence the effects on potential energy savings.
CitationAltare, G., Padovani, D., and Nervegna, N., "A Commercial Excavator: Analysis, Modelling and Simulation of the Hydraulic Circuit," SAE Technical Paper 2012-01-2040, 2012, https://doi.org/10.4271/2012-01-2040.
- Lim, T.H. Lee, H.S. Yang, S. Y. “Development of simulator for hydraulic excavator” Proceedings of the 6 th International Symposium of Fluid Power November 7 10 2005 Tsukuba, Japan
- Kwon, S. K. Kim, J. J. Jung, Y. M. Jung, C.-S. Lee, C. D. Yang, S.Y. “A hydraulic simulator for an excavator” Proceedings of the 7th JFPS International, Symposium on Fluid Power September 15 18 2008 Toyama
- Casoli, P. Anthony, A. Rigosi, M. “Modeling of an excavator system - Semi empirical hydraulic pump model,” Commercial Vehicle Engineering Congress September 2011 Chicago, IL, USA
- Park, S. H. Alam, K. Jeong, Y. M. Lee, C. D. Yang, S.Y. “Modelling and simulation of hydraulic system for a wheel loader using AMESim” ICROS-SICE International Joint Conference 2009 August 18 21 2009 Fukuoka International Congress Center Japan
- Altare, G. “Analisi e modellazione del circuito idraulico di un miniescavatore” MScThesis Politecnico di Torino 2009
- Altare, G. Lovuolo, F. Nervegna, N. Rundo, M. “Coupled simulation of a telehandler forks handling hydraulics” International Journal of Fluid Power 14 2 2012
- Padovani, D. “Analisi e sviluppo di componenti per impianti Load Sensing” MScThesis Politecnico di Torino 2011
- Zarotti, S. Leati, E. Paoluzzi, R. “Hydraulic excavator working cycle: from field test to simulation model” 7th International Fluid Power Conference 2010 Aachen
- Zarotti, S. Paoluzzi, R. Ganassi, G. Terenzi, F. Dardani, P. Pietropaolo, G. “Analysis of hydraulic excavator working cycle” 11th European Regional Conference of the International Society for Terrain-Vehicle Systems October 5 8 2009 Bremen
- JCMAS H020 2007 Earth moving machinery - Fuel consumption on hydraulic excavator - Test procedure