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Development of a Heavy-Duty DME Truck in EFV21 Project~Research and Development of NOx Storage Reduction System for DME engine
Published August 22, 2005 by Society of Automotive Engineers of Korea in South Korea
In recent years, attention has focused on smokeless, sulfur-free dimethyl ether (DME) as a clean fuel for heavy-duty diesel vehicles. As a part of its Next-Generation Environmentally Friendly Vehicles Project (EFV21), the Ministry of Land, Infrastructure and Transport has developed a heavy-duty truck in the 20-ton class that uses DME as its fuel. A NOx storage reduction (NSR) system has also been developed to achieve the EFV21 NOx target of 0.5 g/kWh, which is only one-fourth of the new long-term regulation value promulgated in 2005. The optimization of the NSR system's rich spike control, catalyst capacity, etc., has reduced NOx to 0.11 g/kWh, a level that is close to zero.