Tenneco Inc. will supply a new diesel emissions treatment system for Daimler Trucks’ medium-duty engines, the companies announced at the North American Commercial Vehicle Show in Atlanta.

The equipment, known as an aftertreatment system, will be available for Daimler’s Detroit DD5 and DD8 medium-duty engines and will increase fuel economy and reduce carbon emissions, said Michael Jurich, director of commercial vehicle sales and program management at Tenneco.

It relies on what is known as selective catalytic reduction, or SCR, technology. It injects a urea-based fluid into the system to control diesel emissions, especially smog-forming nitrogen oxides.

The system will be on Daimler Trucks that include Mercedes-Benz trucks and buses, Setra, Freightliner, Freightliner Custom Chassis, BharatBenz, FUSO and Thomas Built Buses.

“We are pleased to partner with Daimler Trucks to support the important launch of their global engine platform for medium-duty trucks,” said Brian Kesseler, Tenneco’s chief executive. “This platform demonstrates Tenneco’s commitment to provide commercial truck customers with our most advanced aftertreatment solutions that meet the needs of the evolving global regulatory landscape, while enabling greater fuel economy and reduced CO2 emissions.”

The aftertreatment system will be manufactured and assembled at Tenneco’s Clean Air facility in Seward, Neb.

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