EXECUTIVE REPORT
Himoinsa showed its S5
range of Stage V compliant models at the Workshop.
Stage fright
Complying with new emissions regulations might bring unexpected challenges to hirers and operators of larger power generation equipment. Alan Guthrie reports from a conference organised by the manufacturer, Himoinsa, in Spain.
Held in May at the manufacturer’s headquarters at San Javier in Spain’s Murcia region, Himoinsa’s Rental Power Workshop was attended by representatives of approximately 40 hire organisations from throughout Europe involved in power generation equipment hire. The aim was to provide an update on Himoinsa’s latest models designed to meet the new EU Stage V emissions regulations applying to engines fitted to non-road mobile machinery, and to explain implications of their operation and maintenance - which could be significant, particularly on higher-capacity generators.
What makes Stage V important? As EHN’s Forum article exactly a year ago explained, from 1 January 2019 all newly manufactured engines in the ranges of up to 56kW and those above 130kW must now comply; for engines between 56kW and 130kW, the requirements come into effect on 1 January 2020. Particulate matter (PM) pollution limits have been reduced by 90% compared to the previous Stage IIIa regulations, with a new limit on the number of emitted particles (PN).
Technological solutions
In many cases, diesel engines above 19kW now require a diesel particulate filter (DPF) and, perhaps, other technological solutions in the combustion and after-treatment processes. There is a transition
period, but manufacturers could only make engines to a previous Stage’s standards until the end of 2018 for engines of up to 56kW and for those above 130kW, and by the end of 2019 for those of 56kW to 130kW.
Engines made before 1 January 2019 to the previous standard can be fitted into newly manufactured equipment up to 24 months following the introduction of Stage V. The OEM equipment from 2019 for use as mobile machinery applications by the hirer must meet Stage V, and this also applies to used machinery fitted with engines produced from 2019. In very general terms, for machines up to 20kW capacity, Stage V implications are minimal because the technology needed on smaller machines is less complex. And many hirers do not offer generators beyond 6kVA or 10kVA, so they will see few changes. Equipment buyers have, therefore, faced a choice of either buying new Stage V models (with a higher price tag), or trying to replace or refurbish existing machines for as long as they can until the old engines are no longer available.
Like other manufacturers, Himoinsa chooses the most appropriate engines from a number of suppliers across its ranges, and representatives from several of these explained their Stage V approaches. Ronald van der Lubbe, Senior Area Manager with Yanmar, said that his company’s latest intercooled turbo diesel series models required no after- combustion treatment such as AdBlue (urea) and that, in typical usage, no scheduled maintenance of the DPF would be required for up to 6,000 hours.
The need for AdBlue
Yanmar’s latest engine models require no specialised after-combustion treatments.
Many FPT engines incorporate technology found on Euro 6 trucks.
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Similarly, Simone Volpe, Power Generation Key Account Manager with FPT explained that on the company’s engines typically used in generators of 30kVA to 400kVA, after-combustion measures were crucial to reduce emissions, using technology developed for Euro 6 trucks for Iveco and other manufacturers, including a patented HI-eSCR2 system to reduce emissions through reaction with AdBlue, together with a diesel oxidation catalyst (DOC) and selective catalytic reduction (SCR) on the filter. These are monitored by sensors in an engine control unit (ECU) that issues alerts if necessary.
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