According to a recently published article, independent tester, Filter Sensing Technologies (FST), concluded that regeneration cycles on diesel particulate filter (DPF) equipped vehicles can have shorter durations, yet still meet emission requirements...

 According to the article, a fleet of trucks used by the New York City Department of Sanitation, powered by DPF-equipped Mack MP-7 engines, was tested using FST's new particulate filter sensing technology called RF-DPF. This particular test sample was chosen due to urban driving routines (stop and go driving) yielding the most frequent need for regeneration cycles. This is because stop and go driving rarely allows the engine and exhaust system to build up adequate heat to keep the system clean on its own. That, and exhaust flow rates are much lower in these types of driving situations, according to the article.

 The RF-DPF system combined a sensing and control unit, which mounted adjacent to the DPF and exhaust stack, along with two radio frequency antennas within the DPF housing. The "results indicate considerable potential to reduce the regeneration duration and also eliminate unnecessary regenerations."

 If this is the case, a lot of fuel could be saved by shortening regen processes—and we wonder if our trucks would benefit from shorter regen cycles, too. More than likely, they would.