Innovative trains
Vossloh offers more G6 drivetrain variants
With the emergence of new traction technologies, locomotives can be specified more closely to their intended use, as the expansion of Vossloh’s G6 range demonstrates.
RADITIONALLY the principal traction decision facing diesel locomotive operators has been between electric and hydraulic transmission, and opinions differ as to which is the superior option for mainline and shunting locomotives. With the expansion of its G6 three- axle locomotive range, Vossloh is offering a flexible drivetrain configuration that allows operators to specify the locomotive best suited to their individual needs. Vossloh still offers the same basic platform for both diesel-hydraulic and a diesel-electric driveline, but now the customer can select their preferred power rating, driveline and energy sources – from diesel to hybrid storage units. Operating efficiency can therefore be fine-tuned because the modularity of the design allows inexpensive retrofitting and conversions. The original G6 shunter, which
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debuted at InnoTrans 2008, weighed 60- 67.5 tonnes with an output of around 700kW and a fuel tank capacity of 1800 litres. Since 2010, it has been certified for operation in Germany, and major operators are Verkehrsbetriebe Peine- Salzgitter and BASF.
The expanded range takes the basic modules of the G6 including underframe, frame, cab, brakes, and controls, but allows the customer to choose from a wide variety of newly- developed driveline options. This will be achieved with the aid of standardised mechanical and electrical interfaces. In developing its modular concept for the G6, Vossloh acknowledged two conflicting factors - locomotives are designed for a long service life, but technology continues to change and advance. Vossloh aims to offer a range that accommodates technical progress, recognising that there will always be new developments,
such as in electrical storage systems. With the G6 serving as the engineering platform (see Figure 1 on p60), this is now feasible, and the following configurations are being
developed and tested: G6 Mono-Engine with 350kW or
700kW diesel engine/generator unit G6 Multi-Engine with two compact
350kW diesel engines/generator units G6 Hybrid with a compact 350kW diesel engine/generator combined with an energy-storage module for traction,
and G6 Akku with rechargeable battery and two energy-storage modules for traction.
The locomotives have a maximum power rating of 700kW and starting tractive effort of up to 220kN. The electric driveline design and testing has been carried out in-house by Vossloh. Last year a new test centre was opened at Vossloh’s Kiel plant to
IRJ September 2012
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