RSSB-funded demon­stra­tor

Rail (UK) - - Fleet News -

A Chiltern Rail­ways Mk 3 Driv­ing Van Trailer is to be the test ve­hi­cle for a new pow­er­train demon­stra­tor for self-pow­ered rail ve­hi­cles, as part of a wider com­pe­ti­tion funded by the RSSB (Rail Safety and Stan­dards Board) and Artemis In­tel­li­gent Power.

The ve­hi­cle will use a JDB diesel en­gine pow­er­ing an E-dyn 96 Dig­i­tal Dis­place­ment hy­draulic pump linked to axle­mounted dig­i­tal dis­place­ment mo­tors on one of the ve­hi­cle’s’ bo­gies.

The pump is said to re­spond rapidly to changes in load de­mand, with pres­surised idle losses 90% lower than with con­ven­tional vari­able dis­place­ment pumps. It is due to be tested over three months from De­cem­ber 2017.

On­board en­ergy stor­age will be pro­vided in the form of hy­draulic ac­cu­mu­la­tors which store en­ergy dur­ing brak­ing for re­use dur­ing ac­cel­er­a­tion. This re­serve can then be used to sup­ple­ment en­gine power.

The RSSB says the tech­nol­ogy could be ap­plied to non­elec­tri­fied routes. It could also be com­bined with a low­er­power diesel en­gine than would nor­mally be re­quired to re­duce emis­sions and fuel con­sump­tion.

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