WORLD ENERGY [R]EVOLUTION A SUSTAINABLE WORLD ENERGY OUTLOOK
Figure 11.14 shows the energy intensity per region in the Energy [R]evolution scenario for passenger rail and Figure 11.15 shows the energy intensity per region in the Energy [R]evolution scenario for freight rail. Heavy and medium duty vehicles (freight by road) Freight transport on the road forms the backbone of logistics in many regions of the world. But it is, apart from air freight transport, the most energy intensive way of moving goods around. However, gradual progress is being made in the fields of drivetrain efficiency, lightweight construction, alternative power trains and fuels and so on. This study projected a major shift in drivetrain market share of medium and heavy duty vehicles in our Energy [R]evolution scenario in the future. As of today, the great majority of MDV and HDV is powered by internal combustion engines, fuelled mainly by diesel and in MDV as well by a small share of gasoline and gas (CNG and LPG). The Energy [R]evolution model includes a considerable shift to electric and fuel cell hydrogen powered vehicles (FCV) until 2050.
Apart from electrically operated trucks fed by an overhead catenary, also inductive power supply via induction loops under the pavement could become an option. In addition to the electric truck fleet in the Energy [R]evolution scenario, HDV and MDV powered by fuel cells (FCV) were integrated into the vehicle stock, too. FCV are beneficial especially for long haul transports where no overhead catenary lines are available and the driving range of BEV would not be sufficient. figure 11.16: HDV operating fully electrically under a catenary178
figure 11.15: energy intensities for freight rail transport in the energy [r]evolution scenario
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TECHNICAL AND BEHAVIOURAL MEASURES TO REDUCE TRANSPORT
figure 11.14: energy intensities for passenger rail transport in the energy [r]evolution scenario
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The electric MDV stock in the model will be mainly composed of battery electric vehicles (BEV), and a relevant share of hybrid electric vehicles (HEV). Hybrid electric vehicles will have also displaced conventional internal combustion engines in heavy duty vehicles. In addition to this, both electric vehicles supplied with current via overhead catenary lines and BEV are modeled in the Energy [R]evolution scenario for HDV applications. Siemens has proved the technical feasibility of the catenary technology for trucks with experimental vehicles in its eHighway project (Figure 11.16). The trucks are equipped with a hybrid diesel powertrain to be able to operate when not connected to the overhead line.
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When under a catenary line, the trucks can operate fully electric at speeds of up to 90 km/h.
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references 178 SOURCE: HTTP://WWW.GREENTECHMEDIA.COM/ARTICLES/READ/SIEMENS-PLANS-TO-CLEAN-UPTRUCKING-WITH-A-TROLLEY-LINE/
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