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NOx Adsorbers

10 January 2006

Cummins Inc. announced its participation in a public-private partnership led by the California South Coast Air Quality Management District (SCAQMD) to demonstrate advanced diesel emission control systems meeting the EPA 2010 on-highway standards. A prototype Cummins ISL 9-liter engine will be fitted with a combined system incorporating a diesel particulate filter and a NOx adsorber.

The project will demonstrate very low emissions for waste collection vehicles operating in urban areas. The engine technology employed must reduce PM emissions to 0.01 g/bhp-hr and NOx to 0.2 g/bhp-hr. The program will require a durability evaluation to ensure the test engine final build meets the demanding duty cycle associated with a refuse collection vehicle.

The SCAQMD’s focus is to have the cleanest engines commercially available as early as possible. To this end, SCAQMD sponsors research and demonstration of both diesel and alternative fuel engines to meet EPA 2010 standards. The Cummins Westport ISL natural gas engine will meet the 2010 standards by 2007.

An interagency funding agreement between the SCAQMD, California Air Resources Board and the US Department of Energy will contribute $1,450,000 toward the cost of the project. Cummins anticipates the development and testing costs to be almost twice this amount over the two-year project schedule.

Source: Cummins