Heavy Duty Diesel Engines Emissions Reduction Through Filtering and Catalytic Combustion

A design of a Diesel¹ particulate matter (PM) filter system for heavy duty vehicles is presented. The system consists of two ceramic catalyzed filters connected in parallel, so that one is in operation while the other one is in stand by or during regeneration. The regeneration (cleaning) process is carried out through the injection of a hot air flow in inverse direction to the filtering process. The air is heated by a thermal energy storage device (Thermal Inertia Device, TID). A catalytic washcoat reduces the carbon activation energy in order to incinerate the (PM) at lower temperature levels. The system has a control and monitoring electronic circuit based on a micro-controller.