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Study of SiC Application to Diesel Particulate Filter (Part 2): Engine Test Results
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 01, 1993 by SAE International in United States
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The characteristics of a new diesel particulate filter material made of SiC were studied through engine tests in varying material properties, such as average pore diameter, and wall thickness. Compared to a conventional cordierite filter of the same size, particulate trapping efficiency is almost the same, and the pressure loss and the deterioration of fuel consumption can be reduced to about half with the optimum material properties. If the same pressure loss is allowed, the filter size can be reduced by 30%. Its good thermal conductivity prevents local temperature increases, which doubles the permissible amount of trapped particulates. As heat crack problems occurred in integral-type filters due to the high thermal expansion of SiC, a split-type filter having 49 filter segments with a square section was developed. An improved filter construction made it possible to sufficiently increase the temperature within the filter even in the corner segments during regeneration with a burner without crack problems.
CitationOkazoe, H., Yamada, T., Niimura, K., Watanabe, Y. et al., "Study of SiC Application to Diesel Particulate Filter (Part 2): Engine Test Results," SAE Technical Paper 930361, 1993, https://doi.org/10.4271/930361.
- Gulati S. T. Sherwood D. L. Dynamic Fatigue Data for Cordierite Ceramic Wall-Flow Diesel Filters SAE paper 910135
- Kitagawa J. Asami S. Uehara K. Hijikata T. Improvement of Pore Size Distribution of Wall Flow Type Diesel Particulate Filter SAE paper 920144
- Gulati S. T. Thermal Stresses in Ceramic Wall Flow Diesel Filters SAE paper 830079
- Kitagawa J. Hijikata T. Makino M. Effects of DPF volume on Thermal Shock Failures during Regeneration SAE paper 890173