A commercial excavator: Analysis, modelling and simulation of the hydraulic circuit

TY - JOUR

T1 - A commercial excavator

T2 - SAE 2012 Commercial Vehicle Engineering Congress, COMVEC 2012

AU - Altare, Gabriele

AU - Padovani, Damiano

AU - Nervegna, Nicola

PY - 2012

Y1 - 2012

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84881199525&partnerID=8YFLogxK

U2 - 10.4271/2012-01-2040

DO - 10.4271/2012-01-2040

M3 - 会议文章

AN - SCOPUS:84881199525

SN - 0148-7191

VL - 8

JO - SAE Technical Papers

JF - SAE Technical Papers

Y2 - 2 October 2012 through 3 October 2012

ER -