Applications - Americas

Off-Road: Construction

Reduce oxides of nitrogen (NOx) and particulate matter (PM) in off-road construction equipment.

We provide an optimized retrofit solution for off-road construction equipment - specially designed for challenging, low-temperature applications.

Off-road diesel engines can contribute significantly to the levels of particulate matter (PM) and oxides of nitrogen (NOx) in the air. In recent years, the U.S. Environmental Protection Agency (EPA) has set emissions standards for engines used in most new construction equipment.

However, because construction equipment can last 25 to 30 years, it will take many years before existing equipment is replaced with new, cleaner equipment. Because EPA's regulations only apply to newly-manufactured diesel engines, EPA developed the Clean Construction USA program. This helps owners and operators of construction equipment reduce emissions from the older engines that are in operation today.

We offer retrofit solutions designed with construction vehicles in mind.

  • AZ Purifier and AZ Purimuffler® diesel oxidation catalysts
    Supported on a ceramic substrate, these solutions afford excellent, low temperature emissions reduction performance as well as EPA and California Air Resources Board (CARB) verifications.
  • Purifilter® passive diesel particulate filter
    This solution offers extraordinary and industry leading reductions of PM (soot), hydrocarbons (HC) and carbon monoxide (CO). It's time to experience retrofit technology solutions that offer superior performance at maximum, cost-effectiveness per retrofit dollar and are EPA- and CARB-verified.
  • Combifilter® active diesel particulate filter system
    This solution removes PM (soot) while reducing carbon dioxide (NO2) emissions. The system is comprised of an integrated diesel particulate filter and silencer assembly, and an off-board regeneration control panel or station. Combifilter® is also CARB-verified and MSHA approved.

Whether your application is earthmoving systems, road building machinery or building construction, we have the experience to help you with all forms of construction applications. We've successfully retrofit equipment ranging from wheel loaders and backhoes to excavators and skid steers with diesel oxidation catalysts or one of our diesel particulate filters.

To learn more how we can help you reduce particulate matter (or soot) and oxides of nitrogen, click here.