Aggreko launches Stage V generators 16 November 2020

John Anderson, sector development manager at Aggreko

Mobile generator supplier Aggreko has launched its first Stage V-compliant generators in the UK.

Mobile generator supplier Aggreko has launched its first Stage V-compliant generators in the UK.

Aggreko claims to be the first hire company to design and manufacture Stage V engines compliant with the Medium Combustion Plant Directive, part of the European Commission’s Clean Air Policy Package to limit emissions of certain pollutants into the air from medium combustion plants.

The availability of the new 600 kVA generators will aid any companies requiring temporary power when working in any of the UK’s current low emissions zones.

Following extensive R&D, Aggreko’s manufacturing plant produced a prototype which was successfully trialled and have now invested in the new fleet of generators, initially to be used on a specific utilities project. The Stage V Generators enable the site to be compliant with EA legislation, and additional dispersion modelling will reduce the emissions to a minimum.

To achieve this new standard, a number of significant changes have been made to Aggreko's Stage V engines, the supplier says. They include:

•Mandatory installation of a diesel particulate filter (DPF), which reduces fine diesel (DPM) emissions, also known as soot emissions.

•Selective catalytic reduction (SCR) systems utilising diesel emission fluid to reduce NOx emissions and thus comply with the standard. The technology involves injecting precise amounts of a liquid into the exhaust gases to produce a chemical reaction which neutralises harmful emissions.

•Diesel oxidation catalysts (DOC) with the aim of reducing CO2 emissions through the process of oxidization.

John Anderson, sector development manager at Aggreko, lead the project and said: “An important fact is that emissions across the entire fleet must be considered. This means that when a variety of equipment is used on an entire project, the emissions across the fleet must be monitored on site. If a business is curious about whether they meet the emission standards, we will be happy to help them with these calculations and identify a suitable solution.”

Introduced by the EU, Stage V (Regulation 2016/1628) is an emissions standard for non-road mobile machinery (NRMM) with spark/compression ignition engines. It aims to reduce emitted particulate matter and reduce harmful substances in the same way road vehicles do. It is an evolution of previous standards. It limits carbon monoxide, oxides of nitrogen and hydrocarbons, as well as the mass of particulate matter (diesel soot) and number of particles emitted to the atmosphere.

Operations Engineer

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