Emissions control business Eminox is celebrating a major win at the recent National Rail Awards. Working in partnership with South Western Railway and rolling stock assets company Porterbrook, Eminox triumphed in the Sustainable Business category at the awards.

This was a collaborative six-month trial of a pioneering retrofit diesel train emissions system. It successfully reduced real-world tail pipe pollution including nitrous oxides (NOx) by over 80% and hydrocarbons, carbon monoxide and particulate matter (PM) by more than 90%.


The project, funded by InnovateUK, adapted and retrofitted Eminox’s EMxS5 emissions reduction system to the exhaust of a 1990s-built Class 159 train in full passenger service between Waterloo and Exeter. It was the first time that such technology, which has been based upon Eminox’s proven know-how from on road heavy-duty vehicles, has been retrofitted to a UK train, providing a cost-effective way of reducing pollution, improving air quality and fighting climate change. (To see the Rail car schematic with captions, click). 

READ: BM Catalysts crowned the winner of Midlands business award

While rail is one of the most sustainable forms of transport per mile travelled, nearly a third of rolling stock remains powered by diesel engines, which were built to older emissions standards. As the award recognises, the innovation is the first step in providing state of the art emissions technology to the rail industry which will enable it to meet modern emissions standards and, provides an enormous opportunity to increase sustainability and benefit passengers, staff, and the wider environment.

Published by GregWhitaker

Editor of CAT Magazine and an experienced motoring journalist

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