New Engine Uses Aftertreatment for Particulates

Detroit Diesel Corp., a Daimler company, recently showcased its new Detroit Diesel DD15™ engine to legislators and government agencies at the SAE International Government Industry meeting.

The engine exemplifies goals of the Department of Energy's 21st Century Truck Partnership focusing on new ways to move freight while reducing pollution and dependency on foreign oil.

The Office of Energy Efficiency and Renewable Energy, through the Office of Vehicle Technologies, has partnered with several diesel engine manufacturers to develop advanced technologies in the areas of combustion, emission control, and system integration.

The result of the largest investment ever made in the development of an engine by an engine manufacturer, the DD15 achieves its goals through the application of a new Amplified Common Rail System as well as innovative turbo compounding technology.

Production of the DD15 began in March. Built with the upcoming EPA 2010 standards in mind, the engine is an EPA '07 engine that relies on a specialized aftertreatment device to prevent the emission of harmful particulates into the atmosphere. Detroit Diesel, in collaboration with DOE, developed key methodologies for controlling the physical and chemical processes that occur during particulate aftertreatment soot capture and regeneration.

"Fuel economy is the single-most important development target for our engines. We are looking forward to our continued collaboration with the DOE in developing and bringing to market new technologies that help meet the national goal of reduced petroleum consumption," said Bernard Heil, head of Daimler Trucks' Engine Development.

The aftertreatment system uses advanced technology to capture soot through a particulate filter. Temperature control across all system components also plays a major role in the system and ultimately overall engine efficiency.

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