Low Cost Optimized Diesel Particulate Filter for Low-Temperature Regeneration from NxtGen and Süd-Chemie
NxtGen Emission Controls Inc. and Süd-Chemie have partnered on a lower cost, high-efficiency diesel particulate filter (DPF) system optimized for low-temperature regeneration using the proprietary technologies of both companies. The collaborative development effort generates up to 40% savings as a result of optimizing the filter with up to 60% less precious metal.
The NxtGen system uses a non-catalytic Syngas Generator to produce syngas—a mixture of hydrogen and carbon monoxide—from engine exhaust and diesel fuel. The syngas can be used to regenerate a lean NOx trap (LNT) by converting trapped NOx into nitrogen and water, or to enable active diesel particulate filter (DPF) regeneration through combustion at lower temperatures than diesel fuel, resulting in lower fuel consumption. (Earlier post.)
According to Holt, preliminary results indicate the NxtGen syngas generator and proprietary control algorithm, coupled with Sud-Chemie’s proprietary particulate filter technology, offers a potential solution that is functional even during low-temperature operation of the engine, including idle conditions.
Together with Süd-Chemie’s proprietary wash coat and catalyst technology, the NxtGen syngas technology provides an opportunity to further develop and apply diesel engine emissions controls on urban vehicles, which operate at low-exhaust temperatures.