Simulation and Experimental Testing of an Actuator for a Fast Switching On-Off Valve Suitable to Efficient Displacement Machines

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

Digital Displacement (DD) fluid power machines are upcoming technology, improving the efficiency compared to traditional variable displacement machines, especially at low displacements where currently available fluid power pumps/motors suffer from mediocre efficiency. This efficiency improvement is made possible using independent electronically controlled seat valves for each pressure chamber, which is controlled corresponding to the rotation of the crankshaft. By control of these pressure chamber seat valves, the total displacement are controlled in discrete steps, and the pressure chambers not contributing to the displacement are not pressurized, which has been shown to improve the efficiency. To make this type of displacement control possible and energy efficient, the seat valves must be fast switching (ms range) and exhibit a very low pressure loss during operation, setting strict requirements for the valve design process. In this paper simulation of such fast switching valve is presented and the transient actuator performance is experimentally validated against transient Finite Element Analysis (FEA). Models predict a switching time of approximately 1ms for the valve and a pressure loss of 0.5 bar at 600 l/min, leading the way for highly efficient switching valves in DD machines.
Original languageEnglish
Title of host publicationProceedings of the 9th JFPS International Symposium on Fluid Power
Number of pages7
PublisherJapan Fluid Power System Society
Publication dateOct 2014
Publication statusPublished - Oct 2014
Event9th JFPS International Symposium on Fluid Power - Matsue, Shimane, Japan
Duration: 28 Oct 201431 Oct 2014

Conference

Conference9th JFPS International Symposium on Fluid Power
CountryJapan
CityMatsue, Shimane
Period28/10/201431/10/2014

Fingerprint

Actuators
Seats
Testing
Displacement control
Crankshafts
Fluids
Pumps
Finite element method

Keywords

  • Digital Displacement
  • Finite Element Analysis
  • Fast switching valve
  • Moving coil
  • Voice coil
  • On-off valve

Cite this

Roemer, D. B., Johansen, P., Bech, M. M., & Pedersen, H. C. (2014). Simulation and Experimental Testing of an Actuator for a Fast Switching On-Off Valve Suitable to Efficient Displacement Machines. In Proceedings of the 9th JFPS International Symposium on Fluid Power Japan Fluid Power System Society .
Roemer, Daniel Beck ; Johansen, Per ; Bech, Michael Møller ; Pedersen, Henrik C. / Simulation and Experimental Testing of an Actuator for a Fast Switching On-Off Valve Suitable to Efficient Displacement Machines. Proceedings of the 9th JFPS International Symposium on Fluid Power. Japan Fluid Power System Society , 2014.
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abstract = "Digital Displacement (DD) fluid power machines are upcoming technology, improving the efficiency compared to traditional variable displacement machines, especially at low displacements where currently available fluid power pumps/motors suffer from mediocre efficiency. This efficiency improvement is made possible using independent electronically controlled seat valves for each pressure chamber, which is controlled corresponding to the rotation of the crankshaft. By control of these pressure chamber seat valves, the total displacement are controlled in discrete steps, and the pressure chambers not contributing to the displacement are not pressurized, which has been shown to improve the efficiency. To make this type of displacement control possible and energy efficient, the seat valves must be fast switching (ms range) and exhibit a very low pressure loss during operation, setting strict requirements for the valve design process. In this paper simulation of such fast switching valve is presented and the transient actuator performance is experimentally validated against transient Finite Element Analysis (FEA). Models predict a switching time of approximately 1ms for the valve and a pressure loss of 0.5 bar at 600 l/min, leading the way for highly efficient switching valves in DD machines.",
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Roemer, DB, Johansen, P, Bech, MM & Pedersen, HC 2014, Simulation and Experimental Testing of an Actuator for a Fast Switching On-Off Valve Suitable to Efficient Displacement Machines. in Proceedings of the 9th JFPS International Symposium on Fluid Power. Japan Fluid Power System Society , 9th JFPS International Symposium on Fluid Power, Matsue, Shimane, Japan, 28/10/2014.

Simulation and Experimental Testing of an Actuator for a Fast Switching On-Off Valve Suitable to Efficient Displacement Machines. / Roemer, Daniel Beck; Johansen, Per; Bech, Michael Møller; Pedersen, Henrik C.

Proceedings of the 9th JFPS International Symposium on Fluid Power. Japan Fluid Power System Society , 2014.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

TY - GEN

T1 - Simulation and Experimental Testing of an Actuator for a Fast Switching On-Off Valve Suitable to Efficient Displacement Machines

AU - Roemer, Daniel Beck

AU - Johansen, Per

AU - Bech, Michael Møller

AU - Pedersen, Henrik C.

PY - 2014/10

Y1 - 2014/10

N2 - Digital Displacement (DD) fluid power machines are upcoming technology, improving the efficiency compared to traditional variable displacement machines, especially at low displacements where currently available fluid power pumps/motors suffer from mediocre efficiency. This efficiency improvement is made possible using independent electronically controlled seat valves for each pressure chamber, which is controlled corresponding to the rotation of the crankshaft. By control of these pressure chamber seat valves, the total displacement are controlled in discrete steps, and the pressure chambers not contributing to the displacement are not pressurized, which has been shown to improve the efficiency. To make this type of displacement control possible and energy efficient, the seat valves must be fast switching (ms range) and exhibit a very low pressure loss during operation, setting strict requirements for the valve design process. In this paper simulation of such fast switching valve is presented and the transient actuator performance is experimentally validated against transient Finite Element Analysis (FEA). Models predict a switching time of approximately 1ms for the valve and a pressure loss of 0.5 bar at 600 l/min, leading the way for highly efficient switching valves in DD machines.

AB - Digital Displacement (DD) fluid power machines are upcoming technology, improving the efficiency compared to traditional variable displacement machines, especially at low displacements where currently available fluid power pumps/motors suffer from mediocre efficiency. This efficiency improvement is made possible using independent electronically controlled seat valves for each pressure chamber, which is controlled corresponding to the rotation of the crankshaft. By control of these pressure chamber seat valves, the total displacement are controlled in discrete steps, and the pressure chambers not contributing to the displacement are not pressurized, which has been shown to improve the efficiency. To make this type of displacement control possible and energy efficient, the seat valves must be fast switching (ms range) and exhibit a very low pressure loss during operation, setting strict requirements for the valve design process. In this paper simulation of such fast switching valve is presented and the transient actuator performance is experimentally validated against transient Finite Element Analysis (FEA). Models predict a switching time of approximately 1ms for the valve and a pressure loss of 0.5 bar at 600 l/min, leading the way for highly efficient switching valves in DD machines.

KW - Digital Displacement

KW - Finite Element Analysis

KW - Fast switching valve

KW - Moving coil

KW - Voice coil

KW - On-off valve

M3 - Article in proceeding

BT - Proceedings of the 9th JFPS International Symposium on Fluid Power

PB - Japan Fluid Power System Society

ER -

Roemer DB, Johansen P, Bech MM, Pedersen HC. Simulation and Experimental Testing of an Actuator for a Fast Switching On-Off Valve Suitable to Efficient Displacement Machines. In Proceedings of the 9th JFPS International Symposium on Fluid Power. Japan Fluid Power System Society . 2014