Advanced Catalyst Studies of Diesel NOx Reduction for Heavy-Duty Diesel Trucks 961129
New catalysts with HC (hydrocarbon) storage ability to improve NOx conversion and to minimize fuel penalty over the US Heavy Duty Transient cycle were developed. Without secondary fuel addition, simultaneous reduction of 13% NOx and about 30% particulate was achieved by storing HC from the engine during low temperature portions of the transient cycle and releasing and using the stored HC for NOx conversion at higher temperatures. With only 1% secondary fuel addition, NOx reduction can be increased to 25%, and the particulate conversion remained relatively constant at about 20%. More than 30% NOx reduction can be obtained with 3% fuel penalty. All the pollutants (NOx, PM, HC and CO) were reduced with 0-1 % secondary fuel addition.
Citation: Kawanami, M., Okumura, A., Horiuchi, M., Schäfer-Sindlinger, A. et al., "Advanced Catalyst Studies of Diesel NOx Reduction for Heavy-Duty Diesel Trucks," SAE Technical Paper 961129, 1996, https://doi.org/10.4271/961129. Download Citation
M. Kawanami, A. Okumura, M. Horiuchi, A. Schäfer-Sindlinger, K. Zerafa
Nippon Shokubai Co., Ltd., Degussa Japan Co., Ltd., ICT Inc.
International Fuels & Lubricants Meeting & Exposition
Topics in Advanced Emission Control and Diagnostic Sensors-SP-1180, SAE 1996 Transactions - Journal of Fuels and Lubricants-V105-4