Driving the UKs railways forward PhD Researcher: Robert
Driving the UKs railways forward
PhD Researcher: Robert Watson; Supervisor: Professor Roderick A Smith
Future Railway Research Centre, Department of Mechanical Engineering, Imperial College London.
The FRRCs Train Energy simulator is being used on Great Western
Mainline routes to determine the most energy-efficient driving strategy
for their Class 43 trains. Train data, such as mass, tractive effort and
resistance are input into the model along with route data, including
gradient and station data.
Two different, energy-efficient driving strategies were investigated:
Section speeds whereby the driver travels at a certain speed between each station along the route,
which is below the line speed, but which still enables the train to keep to the timetable.
Coasting points whereby the driver shuts off the power and coasts after reaching certain coasting
points, which are located a specified distance from each approaching station. Again the coasting point is
located so that the train still keeps to the timetable.
It was decided, in consultation with First Group engineers and their chief driver, that the coasting point
strategy would be easier to implement. The location of the coasting points, on the Paddington to Bristol
Temple Meads route and vice-versa, will be put to trial during the week starting Monday 29 th June 2009.
Predicted fuel savings
FRRCs Train Energy simulator
By comparing the fuel consumption, which
the simulator outputs, to the fuel
consumption from an On-Train Monitoring
Recorder (OTMR), it is predicted that fuel
savings of above 10% can be obtained with
such a coasting point strategy.
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