Business Information: Mobile NOx and PM Aftertreatment System Field Trial

This page updated April 20, 2007.

NxtGen Emission Controls Inc.

Mobile NOx and PM Aftertreatment System Field Trial

Technology and Innovation

NxtGen is developing an innovative diesel engine aftertreatment system with applications for both new engines and retrofits. NxtGen’s system produces syngas, a combination of hydrogen and carbon monoxide, by reforming diesel fuel and engine exhaust. The syngas converts NOx to nitrogen and water in a lean NOx trap. NxtGen’s system uses an innovative control strategy and dual NOx traps which enables an overall system size reduction of up to 70 percent. Syngas will also be used for active regeneration of diesel particulate filters. NxtGen is proposing to use syngas for active regeneration of both particulate filters and lean NOx traps. This approach will enable NxtGen to provide a single, simpler, lower cost method for diesel aftertreatment system regeneration at all engine temperatures, speeds and loads.

Emission Benefit

NxtGen’s system will meet the ARB’s requirement of 85 percent reduction. For retrofit applications, NxtGen’s technology will reduce NOx emissions by 75 percent or more. For a 2004 model year heavy-duty diesel truck (engine-out NOx 11.63 grams per mile), with annual mileage of 60,000 miles, this results in a NOx emission reduction of approximately 0.64 tons per year and PM emission reduction of 0.016 tons.

Project Description

The field trial involves retrofitting NxtGen’s syngas-based aftertreatment system on ten trucks to demonstrate greater than 75 percent NOx conversion efficiency in diesel exhaust emissions, 85 percent reduction in PM emissions, and 5 percent net increase in fuel economy. The field trial will take place at a California truck fleet. PM and NOx emissions and fuel economy changes will be monitored over 1,000 engine operating hours. The project duration will be approximately 12.5 months.

Funding Source	Funding Amount

ICAT	$200,059
Grantee	$
Engine Control Systems, Ltd	$

ICAT Funded Projects

Mobile NOx and PM Aftertreatment System Field Trial

Resources

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