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Catalytically Activated Diesel Exhaust Filters – Engine Test Methods and Results
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English
Abstract
An engine test unit for the evaluation of Diesel exhaust filters with analytical equipment to measure particulates, oxygen, hydrocarbon, carbon monoxide, nitrogenoxides concentrations, temperature and pressure trends is described as well as the test procedures presently applied.
Engine test results with different types of Diesel particulate filters -non activated and catalytically activated - up to 400 hrs. operation time are presented. With base metal catalysts, reductions in “soot”-ignition temperatures of about 100 °C could be attained under optimal conditions. A correlation between oxygen concentration in the exhaust gas and the “soot”-ignition temperature is demonstrated. Combined catalytic systems (precious metal and base metal catalysts) permitted hydrocarbon and carbon monoxide conversions up to 90 % - including a decrease in odour intensity - in addition to particulate reduction.
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Citation
Koberstein, E., Pletka, H., and Völker, H., "Catalytically Activated Diesel Exhaust Filters – Engine Test Methods and Results," SAE Technical Paper 830081, 1983, https://doi.org/10.4271/830081.Also In
References
- Diesel Cars; Benefits, Risks and Public Policy Assembly of Engineering, National Research Council National Academy Press Washington, D.C. 1981
- Enga, B.E. Buchmann, M.F. Lichtenstein, I.E. SAE-Paper 820184 1982
- Howitt, J.S. Montierth, M.R. SAE-Paper 810114 1981
- Wade, W.R. White, J.E. Florek, J.J. SAE-Paper 810118 1981
- Murphy, M.R. Hillenbrand, L.J. Trayser, D.A. SAE-Paper 810112 1981
- Oeser, P. Thomas, U. Particulate Control Systems for Diesel Engines Using Catalytically Coated and Uncoated Traps with Consideration of Regeneration Techniques SAE-Symposium Detroit February 28–March 4 1983