Catalytic mufflers—direct-fit replacement of original mufflers incorporating DOC and 3-Way catalyst to control engine exhaust emissions.
Over 6000 designs are available for immediate shipments serving construction, mining, material handling and other industries where IC engines are used. Custom designs with industry shortest delivery times is our specialty.
The system uses a diesel fuel burner to heat and oxidize the particulate matter (soot) that accumulates on a silicon carbide or cordierite particulate filter monolith.
A computerized monitoring system evaluates the level of soot in the filter and triggers regeneration (automatic mode) or alerts the machine operator (manual mode) when soot needs to be burned off. In both modes, the regeneration occurs during periods when the engine is idling.
In the SCR technology, NOx is reduced over the SCR catalyst through chemical reaction with a reducing agent, such as ammonia or urea.
For safe and easy handling, the BlueMAX™ system uses urea solutions also known as diesel exhaust fluid (DEF) or AdBlue.
The following products are available:
In passively regenerated filters, the substrate is coated with a catalyst to lower the soot combustion temperature. The accumulated soot is oxidized in the filter during regular operation of the engine. Exhaust temperatures of 275-300°C for 25-30% of the operation time are necessary for proper filter regeneration, if ultra-low sulfur diesel fuel is used. Nett filters can be also used with fuels of higher sulfur content, however, higher exhaust temperatures are required for regeneration.
The Nett GreenTRAP™ DPF is a California Air Resources Board (ARB) verified passive diesel particulate filter for stationary applications. The GreenTRAP™ reduces emissions of diesel PM consistent with a Level 3 device—greater than or equal to 85% reduction, while meeting the ARB requirements for NO2 emissions.