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New California verifications for active DPF systems

14 April 2009

The California Air Resources Board (ARB) has verified four new active diesel particulate filter (DPF) systems. Three of the systems use electric heating or a fuel burner to support filter regeneration. Another system—the Johnson Matthey Advanced Catalyzed Continuously Regenerating Technology (ACCRT)—utilizes an active fuel injection strategy to reduce NO2 emissions.

All four systems reduce PM emissions by at least 85% while not increasing NO2 emissions by more than 20%, and have been designated as Level 3 Plus devices. The verified systems include:

Source: California ARB