Analyses of Thermal Shock Failure on Large Volume DPF 900113
Ceramic honeycomb wall flow diesel particulate filters (DPF) have been investigated for use in exhaust gas control of diesel vehicles. However, before they can be used, prevention of thermal shock failure during combustion regeneration is necessary.
Studies were conducted on thermal shock failures on 9-inch diameter large volume DPF during regeneration by finite element analyses (FEA). These studies reveal that, within safe limits, maximum thermal stress is almost constant even at different gas flow rates and oxygen concentrations.
Regeneration tests were also conducted on large volume DPF of several materials having different pore size distributions. FEA thermal stress was compared with mechanical strength of the material at safe levels.
Citation: Kitagawa, J., Hijikata, T., and Makino, M., "Analyses of Thermal Shock Failure on Large Volume DPF," SAE Technical Paper 900113, 1990, https://doi.org/10.4271/900113. Download Citation
Author(s):
Jun Kitagawa, Toshihiko Hijikata, Mikio Makino
Affiliated:
NGK Insulators, Ltd.
Pages: 15
Event:
International Congress & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Advances in Diesel Particulate Control-SP-0816, SAE Transactions Journal of Commercial Vehicles-V99-2
Related Topics:
Diesel particulate filters
Finite element analysis
Gases
Ceramics
Oxygen
Combustion and combustion processes
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »
