Article | 13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden | Geometrical Design and Operability Verification of a Proportional Pressure Relief Valve
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Title:
Geometrical Design and Operability Verification of a Proportional Pressure Relief Valve
Author:
M. Erhard: Institut für Fluidtechnik, Technische Universit√§t Dresden, Germany J. Weber: Institut für Fluidtechnik, Technische Universit√§t Dresden, Germany Georg Schoppel: Bosch Rexroth AG, Germany
DOI:
10.3384/ecp1392a36
Download:
Full text (pdf)
Year:
2013
Conference:
13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden
Issue:
092
Article no.:
036
Pages:
365-376
No. of pages:
12
Publication type:
Abstract and Fulltext
Published:
2013-09-09
ISBN:
978-91-7519-572-8
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


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This paper demonstrates a novel numerical procedure for a synthesis of electro-hydraulic pressure relief valve performance starting with the performance requirements from a functional specification. Results of this methodological approach are the unknown demands for the solenoid with regard to control orifice concepts and the solenoid geometry itself fulfilling the requirements.

The developed modeling approach comprises two major solution steps. At the beginning the displacement-dependent solenoid-spring force characteristic is calculated from the intended pressure-flow rate characteristic map without the use of optimization tools. This new algorithm performs an inverse simulation of a single stage pressure valve. The next solution step deals with the determination of the geometrical shape of the solenoid. Here steady state FEM computations are used in combination with response surface methodologies to predict the desired geometrical shape. At the end robustness verification is done by means of Monte-Carlo simulation for the uncertainties of the valve assembly.

Starting point for the inverse calculations are different control orifice concepts causing varying demands on the solenoid. As a result of this benchmark the most favorable control orifice concept is used for determination of the solenoid geometry. This is performed within several iterations also considering the spring force. Afterwards the robustness of the valve assembly is examined. The verification of the modeling attempt is done on the basis of prototype parts for the solenoid and the control orifice. Measurements confirm the accuracy of the novel simulation strategy for a standalone virtual product development

Keywords: Pressure relief valve; inverse simulation model; solenoid; CFD; FEM

13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden

Author:
M. Erhard, J. Weber, Georg Schoppel
Title:
Geometrical Design and Operability Verification of a Proportional Pressure Relief Valve
DOI:
http://dx.doi.org/10.3384/ecp1392a36
References:

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[3] D Cristofori; and A Vacca. The Modeling of Electrohydraulic Proportional Valves. Journal of Dynamic Systems; Measurement and Control; 134; 2012

[4] T D Spegar et al. An Analytical and Experimental Study of a High Pressure Single Piston Pump for Gasoline Direct Injection (GDi) Engine Applications. SAE Technical Paper; 2009-01-1504; 2009

[5] J Faulkner; N Johnston; and S Weber. Computer Modeling of a Pressure Relief Cartridge Valve. Proc. of the 52nd National Conference on Fluid Power; Las Vegas; 2011

[6] D Wehner. Modellbasierter Systementwurf am Beispiel vorgesteuerter Druckbegrenzungsventile. Dissertation; Technische Universität Dresden; 2008

[7] M Erhard; D Wehner; and J Weber. Numerische Str√∂mungsberechnung (CFD) im Ventilentwurf. Fluid- Struktur-Interaktion (FSI) und deren Anwendungspotenzial. √Ėlhydraulik und Pneumatik; 11-12; 2011

[8] M Petzold et al. Analysis of the flow conditions in a dosing pump with regards to new fuels. Proc. of the 8th International Fluid Power Conference; Dresden; 2012

[9] P Casoli; and A Vacca. Design Optimization of a special relief valve with Response Surface Methodology. Proc. of the Power Transmission and Motion Control; Bath; 2007

[10] M Erhard; G Schoppel; and J Weber. Simulation-Based Design of a Direct-Operated Proportional Pressure Relief Valve. Proc. of the 8th International Fluid Power Conference; Dresden; 2012

[11] S Han. Varianzbasierte Sensitivitätsanalyse als Beitrag zur Bewertung der Zuverlässigkeit adaptronischer Systeme. Dissertation; Technische Universität Darmstadt; 2011

13th Scandinavian International Conference on Fluid Power; June 3-5; 2013; Linköping; Sweden

Author:
M. Erhard, J. Weber, Georg Schoppel
Title:
Geometrical Design and Operability Verification of a Proportional Pressure Relief Valve
DOI:
http://dx.doi.org/10.3384/ecp1392a36
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