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EMISSIONS REDUCTION When the same company had the eastern


London-Edinburgh franchise, it instigated the procurement of Hitachi Azumas, a new breed of hybrid train that can run on overhead electric power where available, while switching to diesel when necessary – an entirely cleaner approach than the one existing on the West Coast.


A NEW APPROACH Bi-modal trains aren’t new in themselves. Electro- diesels have been used in the south of England for decades, alternating between third-rail electric power pickup when available and diesel on those routes where it isn’t. However, the Azuma is the first to use the


overhead supply and can make use of the higher power availability for high-speed routes. Already in use on the GWR network in the South


Emissions come under control for Bi-modal train


The newly commissioned hybrid Hitachi Azuma train on the London North Eastern Railway routes gets its emissions under control with a specialist exhaust system from UK supplier, Eminox


B


i-modal or hybrid trains are seen as one answer to reducing emissions on a network that is finding 100 per cent electrification too costly to be effective. Some routes, including the West Coast Main Line from


London to Glasgow, use a combination of modes of power depending on the section being travelled on. Virgin, which holds the franchise for the main


London-Glasgow services, runs both electric Pendolinos and diesel Voyagers on much the same routes, with the Voyager running when the route variations take excursions into non-electrified sections.


❱❱ A total of 65 Hitachi Azuma trains will be used on the London North Eastern Railway network, beginning with the main London to Edinburgh route


West, the Azuma has now been introduced onto the newly formed LNER network between London and Edinburgh, the first new stock on that part the network for three decades and part of “Branson’s Legacy”.


EMISSION CONTROL Being hybrid doesn’t necessarily mean clean power. While it is clean in electric mode, there is still the potential for high levels of emissions when running on diesel so Hitachi has been working with UK exhaust and emissions control specialist, Eminox, on reducing emissions on the Azuma. As a result, the company created and


manufactured specially designed exhausts and insulated pipework for LNER’s entire 65-locomotive fleet of UK assembled, bullet train inspired Azumas. The challenge was to develop a bespoke exhaust


system to transfer gas from the after treatment system located under the floor next to the engine, through the car body to the rear and ensure safe discharge from the top of the train. Space was tight and so routing the 16m of 140-200mm diameter stainless steel pipework was complex. The design incorporated insulated pipes, convolutes, bellows and mounting brackets. The Azuma is part of the Hitachi AT300 family


and is a class 800 bi-mode multiple unit. Eminox has been working with Hitachi on the AT300 family since 2014 and has supplied more than 550 systems, many of which are already in service on trains operated by Great Western Railway and TransPennine Express. “After working closely with Hitachi for five years


on the AT300 project, it is great to see the Azuma enter service, transforming the travel experience for LNER passengers,” says Cyril Journoux, original equipment (OE) sales director, Eminox. “As a Lincolnshire business we’re delighted the Azuma fleet will be passing through the county, showcasing local design and manufacturing expertise to the world.” Eminox specialises in providing exhaust and


emissions control systems for high-powered machinery across multiple industries, including truck and bus, rail and construction. T&TH


June 2019 /// Testing & Test Houses /// 19


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