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Fluid Facilitates Diesel

With its third-generation diesel-fuel based additive, says Olivier Touret, vice president of Rhodia Electronics & Catalysis (www.rhodia-ec.com; La Rochelle, France), the additive tank needs to be filled after 155,000 miles, up from 87,500 miles for the second-gen product.

With its third-generation diesel-fuel based additive, says Olivier Touret, vice president of Rhodia Electronics & Catalysis (www.rhodia-ec.com; La Rochelle, France), the additive tank needs to be filled after 155,000 miles, up from 87,500 miles for the second-gen product. Trade-named Eolys, the fluid, which is called a “additive-based diesel particulate filter” (A-DPF) system, is formulated to eliminate essentially all of the particulates in exhaust gas (1 to 3 mg/km in the standardized European MVEG cycle), and, because the filter regeneration temperature is lowered by about 200°C and reduces the particulate combustion time to from two to four minutes, the diesel fuel used for combustion is minimal, thereby keeping a low level of CO2 emissions compared with other technologies. There is no impact on NO2 emissions. The first generation system was deployed in 2000 on cars built by PSA Peugeot Citroën. There are said to be approximately 2.5 million vehicles on the road using the A-DPF system. Touret says that they are working with the U.S. EPA to achieve approval for the third-gen system. He explains that when a vehicle is refueled, the Eolys is metered into the tank without any action by the person doing the refueling.—GSV