CARB OKs Donaldson muffler systems

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Donaldson Co., a manufacturer of filtration systems and parts, announced that the company received Level 3 plus verification by the California Air Resources Board for two new onroad emissions retrofit devices. The company says that CARB on April 9 verified its Semi-Active Electric Filter (SEF) muffler system for select 1991-2006 model-year diesel engines used in onroad applications, and on April 28 verified its Low NO2 Filter (LNF) muffler system for select 1993-2003 model-year diesel engines used in onroad applications.

“We are pleased to have received the CARB verification of both of our SEF and LNF muffler systems,” says Fred Schmidt, director of retrofit emissions for Donaldson Co., based in Minneapolis. “Together, these products provide broad engine coverage for vehicles subject to the upcoming regulatory deadlines of the California Diesel Risk Reduction Program. They are also outstanding technologies for the upcoming surge of retrofitting that will result from the increased DERA funding and the stimulus funds included in the American Recovery and Repatriation Act signed into law by the Obama administration.”

Donaldson says the LNF muffler offers vehicle and fleet owners the most cost-effective diesel particulate filter solution for vehicles with sufficient duty cycles to permit a passive DPF solution, while the SEF muffler system, which offers fleets an active solution for vehicles that don’t have sufficient duty cycles for passive regeneration, is designed especially for fleet vehicles that return home every night and can “plug in” their equipment for DPF regeneration.