The EPA has set emission standards for engines used in most construction, agricultural, and industrial equipment. They have also adopted nonroad diesel fuel requirements to decrease the allowable levels of sulfur (500 parts per million, or ppm, sulfur maximum) fuel, which can damage advanced emission control technologies. The most recent nonroad engine and fuel regulations complement similarly stringent regulations for diesel highway trucks and buses and highway diesel fuel for 2007. This is the first step of the EPA's Nonroad Diesel Rule, with the eventual goal of reducing the sulfur level of fuel for these engines to meet an ultra-low standard (15 ppm) enabling new advanced emission-control technologies.

EPA has adopted a national program to reduce emissions from future nonroad diesel engines by integrating engine and fuel controls as a system to gain the greatest emission reductions. To meet these emission standards, engine manufacturers will produce new engines with advanced emission-control technologies similar to those already used for on-road equipment.

This page will provide links to regulations, articles and public comments submitted by interested parties and will be updated as new information becomes available. If you have items you would like posted on this page, contact Dick Dressler at 414-298-4132, or e-mail him at rdressler@aem.org.

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