An important aspect of traction module selection is the cost of energy, and on-demand performance is critical to optimising energy usage. The less a vehicle is designed for general-purpose operations, the greater the possible fuel savings. However, adopting such a solution may also result in severe operational constraints.
At first sight, hybrid locomotives are often an enticing option, but they are saddled with necessary and expensive electricity storage systems, and the long-term performance of these technologies under often-rigorous shunting conditions has yet to be proven. Other criteria include local operating conditions. If, for example, the location requires zero emissions, it may be necessary to opt for a battery locomotive. Often operators seek locomotives with a long fuel range and the capability to perform more than one type of duty.
Capitalising on the experience gained
so far, Vossloh has developed a three- axle locomotive fitted with two small diesel engines each rated at 350kW and sourced from the commercial road vehicle industry. Thanks to their family
This feature was written by Dipl-Ing Tim Hildebrandt, head of development for Vossloh Locomotives (left), Dipl-Ing Christian von der Weth, systems engineer (centre), and Dipl-Ing Sebastian Völler, development engineer (right).
background, these engines can deliver a performance characterised by low fuel costs and emissions on a par with the Euro 5 standard for lorries. In addition, an automatic start/stop system further enhances fuel efficiency, especially for small diesel engines combined with the calibrated electric driveline. Other benefits include the diesel engine’s cold-starting properties, improved responsiveness and a
performance that matches traction demands while reducing the amount of time the diesel engine is in operation which, in turn, extends maintenance intervals. Maintenance costs on the multi-engine systems are very modest compared with those of hybrid technologies. Fuel consumption during shunting operations has been cut to around 9 litres per hour of locomotive operation. IRJ
MULTI TASKER AND SWITCH TILTER FROM KIROW THE PERFECT SOLUTION FOR EFFICIENT SWITCH RENEWAL
KIROW, ARDELT AND KOCKS ARE MEMBERS OF KRANUNION
PLEASE VISIT KIROW IN BERLIN AT THE INNOTRANS 2012, SEPTEMBER 18 TH TO 21 ST, HALL 26, BOOTH 106.
IRJ September 2012
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