Nett Technologies announced that it has received U.S. EPA verification of its BlueMAX 100 Selective Catalytic Reduction (SCR) system for controlling NOx emissions from mobile nonroad medium- and heavy-duty diesel engines. The verification is one of the first for a retrofit SCR system issue under the EPA’s Environmental Technology Verification (ETV) program, the company said.
Nett’s BlueMAX SCR system uses a urea control strategy that relies on a NOx concentration measurement sensor positioned upstream of the SCR catalyst. Based on the NOx sensor signal, in combination with an engine mass air flow sensor and temperature sensor, the necessary urea dosing rate is calculated by the control algorithm.
More information is available in the Emissions & Technology Forum.
