ASDS™ tested successfully on Metroline city bus in London

Amminex ASDS™ technology which reduces harmful NOx emissions from diesel buses has recently been trialled successfully in London, with results suggesting it could save hundreds of lives annually if installed across the capital. The number of premature deaths caused by air pollution in London currently stands at an estimated 9,500 each year, according to official reports.

The ASDS™ technology was tested by bus operator Metroline, which holds a major contract with TfL (Transport for London). Metroline carried out the test on a seven year old Euro IV city bus operating in central London. The Amminex solution performed more than twice as well as the prevailing technology, reducing NOx emissions by 84% compared to the 32% reduction achieved by the standard configuration. The results were achieved with a simple swap of the additive system.

Reliable daily operation

Ian Foster, Engineering Director, Metroline, said: “Using ASDS™, we more than doubled the NOx reduction on a relatively old Euro IV bus, bringing it below Euro V level without making any changes to the catalytic system. The technology has proven extremely stable in terms of daily operation over the course of 18 months regardless of outside temperature and driving conditions. Furthermore the use of ASDS™ has eliminated common reoccurring issues, such as the formation of solid deposits in the exhaust system.”

In London, pollutants leaving the tailpipes of the city’s more than 9,000 primarily diesel powered buses are largely responsible for the failure of nearly all London boroughs to meet EU air pollution limits for nitrogen dioxide (NO2). The effectiveness of the prevailing technology is hampered by low speeds and low temperatures – conditions that do not affect the ASDS™ solution from Amminex.

Tue Johannessen, Chief technology Officer, Amminex, said: “The London trial as well as data from Copenhagen shows that bus operators with Euro IV and V city buses in their fleet can capture a major NOx benefit with an efficient, low cost solution simply by replacing the prevailing technology with our solid ASDS™ technology. It is not necessary to get rid of diesel powered city buses – they just need the right emissions solution.”

 

The invisible and odorless, yet toxic, NO2 contributes to the premature death of more than 9,000 Londoners each year. PEMS testing recently carried out by UK-based Emissions Analytics has confirmed that buses retrofitted with Amminex’ ASDS™ technology meet Euro VI emissions requirements in real urban driving. The elimination of NO2 is particularly impressive with a 99% reduction.

 

The Amminex solution installed on the Metroline bus performed more than twice as well as the prevailing technology, reducing NOx emissions by 84% compared to the 32% reduction achieved by the standard configuration. The results were achieved with a simple swap of the additive system.

For traffic authorities and fleet operators ASDS™ enables:

  • Emissions upgrade to Euro VI level; ASDS™ replacing AdBlue®
  • System reliability - problems with AdBlue® eliminated; no deposits or crystallization issues
  • Reduced CapEx – run your existing fleet longer after ASDS™ upgrade
  • Reduced operating cost, down-time & maintenance