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Diesel Particulate Filter Retrofit on Construction Equipment

An example of an emissions control system using a CleanAIR PERMIT diesel particulate filter installed on a wheel loader in Torreon, Mexico to eliminate black smoke and odors from the exhaust. Notice that there is no dirty black smoke coming from the exhaust filter located on top of the vehicle even though the wheel loader is running at full load. The PERMIT Filter reduces particulate matter, carbon monoxide, and hydrocarbons from diesel emissions when installed on vehicles and stationary engines.

CleanAIR PERMIT Filter on Off-Road Vehicle

The CleanAIR PERMIT Filter installed on a loader (off-road diesel vehicle) at a hard rock mine. The PERMIT Filter is a custom designed diesel particulate filter used to virtually eliminate emissions of particulate matter, carbon monoxide and hydrocarbons from diesel exhaust. The video shows a construction retrofit and emissions testing by the National Institute of Occupational Safety and Health (NIOSH) with a visible, dramatic reduction in particulate emissions (soot) after installation of the PERMIT Filter. Retrofitting an off-road fleet with PERMIT Filters can substantially decrease toxic emissions at a mine or construction site.

See How the CleanAIR PERMIT Filter Works

View the CleanAIR PERMIT Filter at work as it reduces diesel emissions of particulate matter by greater than 85%, and reduces hydrocarbons and carbon monoxide by up to 99% on off-road diesel vehicles. The PERMIT Filter is individually customized for each application and can be designed as a filter/muffler emissions control system taking the place of a standard muffler. Diesel retrofits using particulate filters can substantially reduce toxic air pollution emissions at a construction site or mining facility.

The CARB Verified CleanAIR PERMIT Diesel Particulate Filter

Animation showing the CleanAIR PERMIT Filter/Silencer reducing back-up generator emissions using PERMIT diesel particulate filters. The PERMIT Filter is CARB verified - Level 3, for emergency and prime power stationary diesel engines to reduce particulate matter by greater than 85 percent. It also reduces hydrocarbons and carbon monoxide by up to 99 percent. The CleanAIR PERMIT Filter/Silencer with the CleanAIR HiBACK Data Logger and Alarm System is a complete air pollution control system for stationary generators.

The ENDURE SCR Catalyst (Selective Catalytic Reduction) for SCR Control

Animation of CleanAIR Systems' ENDURE SCR Catalyst as it dramatically reduces NOx emissions by up to 95% using selective catalytic reduction. The ENDURE SCR Catalyst is designed for use with lean burn engines, gas turbines and fossil-fueled power plants (coal-fired). The ENDURE SCR Catalyst is also available as replacement panels for existing installations.