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Applications and Benefits of Catalytic Converter Thermal Management
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English
Abstract
A catalytic converter thermal management system (TMS) using variable-conductance vacuum insulation and phase-change thermal storage can maintain the converter temperature above its operating temperature for many hours, allowing most trips to begin with minimal “cold-start” emissions. The latest converter TMS prototype was tested on a Ford Taurus (3.0 liter flex-fuel engine) at Southwest Research Institute. Following a 24-hour soak, the FTP-75 emissions were 0.031, 0.13, and 0.066 g/mile for NMHC, CO, and NOx, respectively. Tests were also run using 85% ethanol (E85), resulting in values of 0.005, 0.124, and 0.044 g/mile, and 0.005 g/mile NMOG. Compared to the baseline FTP levels, these values represent reductions of 84% to 96% for NMHC, NMOG, and CO.
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Citation
Burch, S., Keyser, M., Colucci, C., Potter, T. et al., "Applications and Benefits of Catalytic Converter Thermal Management," SAE Technical Paper 961134, 1996, https://doi.org/10.4271/961134.Also In
References
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