Dynamic Response of a Digital Displacement Motor Operating with Various Displacement Strategies

Sondre Nordås, Michael Møller Bech, Morten K. Ebbesen, Torben Ole Andersen

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Abstract

Digital displacement technology has the potential of revolutionizing the performance of hydraulic piston pumps and motors. Instead of connecting each cylinder chamber to high and low pressure in conjunction with the shaft position, two electrically-controlled on/off valves are connected to each chamber. This allows for individual cylinder chamber control. Variable displacement can be achieved by using different displacement strategies, like for example the full stroke, partial stroke, or sequential partial stroke displacement strategy. Each displacement strategy has its transient and steady-state characteristics. This paper provides a detailed simulation analysis of the transient and steady-state response of a digital displacement motor running with various displacement strategies. The non-linear digital displacement motor model is verified by experimental work on a radial piston motor.
Original languageEnglish
Article number1737
JournalEnergies
Volume12
Issue number9
Number of pages25
ISSN1996-1073
DOIs
Publication statusPublished - Aug 2019

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Dynamic Response
Dynamic response
Stroke
Reciprocating pumps
Transient State
Engine cylinders
Pistons
Hydraulics
Partial
Strategy
Simulation Analysis
Pump

Keywords

  • Digital displacement motor
  • Displacement strategies
  • Transient response
  • Steady-state response
  • Modeling
  • Experimental validation

Cite this

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abstract = "Digital displacement technology has the potential of revolutionizing the performance of hydraulic piston pumps and motors. Instead of connecting each cylinder chamber to high and low pressure in conjunction with the shaft position, two electrically-controlled on/off valves are connected to each chamber. This allows for individual cylinder chamber control. Variable displacement can be achieved by using different displacement strategies, like for example the full stroke, partial stroke, or sequential partial stroke displacement strategy. Each displacement strategy has its transient and steady-state characteristics. This paper provides a detailed simulation analysis of the transient and steady-state response of a digital displacement motor running with various displacement strategies. The non-linear digital displacement motor model is verified by experimental work on a radial piston motor.",
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Dynamic Response of a Digital Displacement Motor Operating with Various Displacement Strategies. / Nordås, Sondre; Bech, Michael Møller; Ebbesen, Morten K.; Andersen, Torben Ole.

In: Energies, Vol. 12, No. 9, 1737, 08.2019.

Research output: Contribution to journalJournal articleResearchpeer-review

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