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International Journal of Railway Technology
IJRT, Volume 7, Issue 3, 2018
Hybrid Rail Vehicles using Digital Hydraulics
W.H.S. Rampen1, G.P. Voller2, S.M. Laird2, D. Abrahams2 and J. Macpherson2
1The University of Edinburgh, Edinburgh, United Kingdom
W.H.S. Rampen, G.P. Voller, S.M. Laird, D. Abrahams, J. Macpherson, "Hybrid Rail Vehicles using Digital Hydraulics", International Journal of Railway Technology, 7(3), 45-66, 2018. doi:10.4203/ijrt.7.3.3
Keywords: hybrid, powertrain, hydrostatic, hydraulic, railcar, transmission.
This paper shows how a new generation of digital hydraulic machines can be used to create a series hybrid transmission for a diesel-powered railcar, with gas accumulators used for on-board energy storage. Simulation results are provided for a concept passenger vehicle based on this technology, showing improvements to performance and fuel consumption. The conversion of a demonstration vehicle is described and test results are presented.
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