Detroit Diesel Corp. plans to use exhaust gas recirculation technology and diesel particulate filters to meet the EPA’s 2007 emission requirements. EGR will be used on the DDC Series 60 and the Mercedes-Benz engines marketed by the company.

EGR works by circulating cooled exhaust gas back into the engine air intake. This reduces formation of NOx. In addition, the company will use diesel particulate filters to meet the new particulate matter standard.

Carsten Reinhardt, company president and CEO, said EGR was the choice for 2007 because of the system’s “greater familiarity with our customers and its ease of deployment.”

Reinhardt said 2007 EGR engines are already in development, and Detroit Diesel intends to operate vehicles with the new engines by the end of 2004. By 2007, the company estimates about 300,000 Detroit Diesel and Mercedes-Benz engines operating in North America will use EGR technology, according to news accounts.

The 2007 EPA requirements call for more than a 50 percent reduction in NOx emissions and a 90 percent reduction in particulate matter.