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Niall Caldwell
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Proceedings Papers

A Cylinder Enabling Algorithm for Reduction in Low Frequency Pulsation From Digital Displacement Pumps

Daniil Dumnov, Niall Caldwell
Proc. ASME. FPMC2022, BATH/ASME 2022 Symposium on Fluid Power and Motion Control, V001T01A010, September 14–16, 2022
Paper No: FPMC2022-88893
https://doi.org/10.1115/FPMC2022-88893
View Paper titled, A Cylinder Enabling Algorithm for Reduction in Low Frequency Pulsation From Digital Displacement Pumps
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Topics: Algorithms, Cylinders, Displacement, Pumps
Proceedings Papers

Demonstration of Efficient Energy Recovery Systems Using Digital Displacement® Hydraulics

John Hutcheson, Daniel Abrahams, Jill Macpherson, Niall Caldwell, Win Rampen
Proc. ASME. FPMC2020, BATH/ASME 2020 Symposium on Fluid Power and Motion Control, V001T01A033, September 9–11, 2020
Paper No: FPMC2020-2767
https://doi.org/10.1115/FPMC2020-2767
View Paper titled, Demonstration of Efficient Energy Recovery Systems Using Digital Displacement® Hydraulics
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Topics: Displacement, Heat recovery, Hydraulics, Actuators, Off-road vehicles, Pumps, Architecture, Energy efficiency, Energy recovery, Fluids
Proceedings Papers

Energy Efficient Excavator Hydraulic Systems With Digital Displacement® Pump-Motors and Digital Flow Distribution

Jill Macpherson, Christopher Williamson, Matthew Green, Niall Caldwell
Proc. ASME. FPMC2020, BATH/ASME 2020 Symposium on Fluid Power and Motion Control, V001T01A035, September 9–11, 2020
Paper No: FPMC2020-2770
https://doi.org/10.1115/FPMC2020-2770
View Paper titled, Energy Efficient Excavator Hydraulic Systems With Digital Displacement® Pump-Motors and Digital Flow Distribution
Open the PDF for Energy Efficient Excavator Hydraulic Systems With Digital Displacement® Pump-Motors and Digital Flow Distribution in another window
Topics: Displacement, Energy recovery, Flow (Dynamics), Hydraulic drive systems, Motors, Pumps, System architecture, Trenching machinery, Fuels, Simulation
Proceedings Papers

DEXTER: The Application of a Digital Displacement ® Pump to a 16 Tonne Excavator

Matthew Green, Jill Macpherson, Niall Caldwell, W. H. S. Rampen
Proc. ASME. FPMC2018, BATH/ASME 2018 Symposium on Fluid Power and Motion Control, V001T01A047, September 12–14, 2018
Paper No: FPMC2018-8894
https://doi.org/10.1115/FPMC2018-8894
View Paper titled, DEXTER: The Application of a Digital Displacement ® Pump to a 16 Tonne Excavator
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Topics: Displacement, Pumps, Trenching machinery, Fuels, Control systems, Testing, Design, Emissions, Energy dissipation, Engines
Proceedings Papers

Review of Early Work on Digital Displacement ® Hydrostatic Transmission Systems

Niall Caldwell
Proc. ASME. FPMC2018, BATH/ASME 2018 Symposium on Fluid Power and Motion Control, V001T01A061, September 12–14, 2018
Paper No: FPMC2018-8922
https://doi.org/10.1115/FPMC2018-8922
View Paper titled, Review of Early Work on Digital Displacement ® Hydrostatic Transmission Systems
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Topics: Displacement, Hydraulic drive systems, Pumps, Vehicles, Engines, Finite element analysis, Motors, Stress, Compressibility, Computer software