Through optimized synergies as demonstrated in the ECOpack the sub-systems described in the preceding chapters enable a significant reduction of noise, exhaust emissions and fuel consumption. During braking of the rail vehicle, i. e. during retarder operation, braking energy is stored. This hydrostatic recuperation allows hydrostatic braking down to standstill also outside the retarder range. When entering a station, the diesel engine is switched off once the train goes below a driving speed of 20 km/h. Again, this will result in fuel savings and reduced noise emissions. Electric energy required for cooling, supplying other auxiliary systems such as air conditioning, on-board energy, electric water pumps or compressed air systems, is provided by the newly developed Steamdrive system. If, for example during longer halting times in the station, the residual heat and/or the inertia of the system is insufficient, the Steamdrive is fired up via the stationary emission and fueloptimized regeneration burner of the particle filter. This also allows that the diesel engine stays switched off while the train is inside the station. Hydrostatic energy stored earlier during braking allows fully hydrostatic, emission-free exits from the station and acceleration up to 30 km/h. Relevant fuel savings, achieved just by hydrostatic recuperation, can amount to up to 15 percent, depending on the route profile. In driving operation, the new diesel particle filter reduces the amount of diesel particles that would otherwise be emitted to the environment. The regeneration process is optimally controlled by the VTDCeco in line with load and driving parameters. The VTDCeco controls the entire drive system and regulates the engine switch-off and the control of the energy sources (recuperation of braking energy and Steamdrive recuperation Innovative Drive Concept for Rail Vehicles - Voith-Powerpacks control). Additionally, the control system ensures further savings effects during the entire operation, thanks to an optimized auxiliary systems management designed to protect resources, and intelligent activation and deactivation of other systems. With the driver-friendly ECO stage, high-consumption driving is prevented, for example by optimum use of in-built time reserves.


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    Title :

    Innovative drive concept for rail vehicles - Voith-powerpacks


    Contributors:


    Publication date :

    2008


    Size :

    18 Seiten, 10 Bilder, 1 Quelle


    Type of media :

    Conference paper


    Type of material :

    Storage medium


    Language :

    English




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