ProductsEGR-SCRIn 1997, Clean Diesel developed and patented the concept of combined EGR and SCR to minimize emissions and take advantage of the benefits each can bring in terms of NOx reduction (US patent 5,924,280 and European patent EP998625).As legislation tightens across the globe, Enhanced Gas Recirculation (EGR) in combination with Selective Catalytic Reaction (SCR) is soon to become a mainstream solution. Previously seen as competing approaches, combined EGR-SCR allows users to meet strict NOx levels outlined by the US 2010 and Euro 6 / VI emission standards. The EGR system can be activated to reduce NOx when starting a cold engine. The SCR operates at a higher temperature when the catalyst is fully active and at low EGR rates. With both EGR and SCR in place, engines can be fine-tuned to deliver improved fuel efficiency and greater emissions reduction. Clean Diesel has been awarded the 2009 Excellence in Technology of the Year Award for the Combined Use of EGR and SCR by Frost & Sullivan. read more »If you are an engine manufacturer or OEM that uses or plans to use EGR in combination with SCR, you may require a license from Clean Diesel Technologies. Please contact us by phone or email at one of the locations below.
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