Diesel fuel is essential to our economy and everyday life. According to the EPA, diesel is responsible for more than 80% of goods exported from and imported to the U.S.—transported by truck, train, ship or intermodal means. Construction and farm equipment, industrial and public transportation, emergency services and emergency power all depend on diesel. Clean diesel technology reduces emissions from diesel engines by controlling exhaust emissions, minimizing idle time, and improving engine efficiency.

Although diesel engines are more efficient and provide more power than a gasoline equivalent, diesel fuel produces carbon dioxide (CO₂) and carbon monoxide (CO), as well as hydrocarbons, nitrogen oxide, black carbon, and particulate matter. These emissions impact the environment and can cause asthma, allergies, heart and lung disease. Using clean diesel technology can reduce these pollutants for cleaner and healthier air.

• Exhaust control measures

• Filters or catalysts that reduce toxic emissions

• Idle reduction technologies

• Aerodynamic technology

• Engine repower or replacement with a higher emission standard

• Hybridization, combining any two technologies to improve efficiency

The U.S. Environmental Protection Agency (EPA) National Clean Diesel Campaign Diesel Emission Reduction Act (DERA) grant programs help fleets adopt technologies to reduce the environmental impact of non-road and on-highway diesel vehicles.