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Cybrand offers a comprehensive range of exhaust aftertreatment solutions to ensure generators of all sizes can meet the latest diesel emissions legislation. With the demand for backup power and power generation growing, addressing the environmental impact of diesel engines on generators is crucial.

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In conjunction with products from the leading technology experts, Cybrand provides cutting-edge solutions that help reduce these emissions, making diesel generators eco-friendlier and more compliant with emission and workplace safety standards.

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• Stage V Compliance

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For small and medium gensets, we offer one of HJS’s most advanced offerings is its SCRT® Technology, which is designed to reduce both particulate matter and NOx emissions.

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This technology is especially effective in reducing emissions from Tier 3 to Tier 4 and Stage V standards, making it ideal for businesses that want to improve the health of their workers and future-proof their diesel generators for any possible regulatory changes coming in the future.

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• MCPD Compliance

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​Larger gensets that fall into Medium Combustion Plant Directive regulations (MCPD) require SCR solutions for NOx reduction. Noxero provides the solution.

 

 

How does Noxero SCR retrofit work?

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An SCR system reduces NOx emissions by injecting a controlled amount of AdBlue into the exhaust stream, where it converts into ammonia and reacts across a catalyst. The process begins with the engine’s speed and load data, which the control unit uses to estimate exhaust flow and determine the correct AdBlue dosing rate.

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AdBlue itself is a mixture of roughly one‑third urea and two‑thirds deionised water. The Noxero retrofit package includes a compact onboard AdBlue reservoir equipped with level monitoring, along with a control module that manages the dosing pump and the airless injector.

When AdBlue is introduced into the hot exhaust, the water content evaporates and the urea breaks down into ammonia once temperatures exceed about 180°C. A temperature sensor at the injection point ensures conditions are suitable before dosing occurs, preventing crystallisation that could obstruct the catalyst face.

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The ammonia then passes over the SCR catalyst, where it reacts with NOx (NO and NO₂) to form nitrogen and water vapour — both naturally occurring components of

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To safeguard against excess ammonia reaching the outlet, an ammonia slip catalyst is installed after the SCR bricks. The system’s ECU stores real‑time emissions data, which can be retrieved through Windows‑compatible software either manually via laptop or automatically through a telematics link.

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When installed on older Stage II or Stage IIIA engines, the Noxera SCR system can reduce NOx levels to below the DEFRA MCPD limit of 190 mg/Nm³. If a DPF is added alongside the SCR, these engines can potentially achieve emissions performance comparable to modern Stage V mobile generator standards.

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