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An Engine Dynamometer System for the Measurement of Converter Performance
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1973 by SAE International in United States
Annotation ability available
A precisely controlled, stabilized internal combustion engine is used to generate exhaust gas with fixed emission composition (HC, CO, NOx, O2, CO2), and exhaust temperature. A two-way valve in the exhaust duct switches this gas into a catalytic converter initially at room temperature. The transient warmup and steady-state conversion efficiencies are printed out along with strip charts of the exhaust gas concentrations out of the converter, and gas temperature into and out of the converter. The transient response is particularly important since vehicle emission is much higher during the first few minutes of the Environmental Protection Agency (EPA) driving schedule. Thus, this test is effective in predicting EPA performance of the converter on a particular converter test vehicle. Actual experimental results correlate very well. The math model for generating the predicted normalized EPA results has been developed.
CitationHerod, D., Nelson, M., and Wang, W., "An Engine Dynamometer System for the Measurement of Converter Performance," SAE Technical Paper 730557, 1973, https://doi.org/10.4271/730557.
- Environmental Protection Agency Federal Register 37 175 Sept. 8 1972
- Holl William H. “Variables for Emission Test Data Analysis.” Paper 730533 presented at SAE Automobile Engineering Meeting Detroit May 1973
- Moore M. L. “Assurance and Control of Vehicle Emissions Testing” Paper 730534 presented at SAE Automobile Engineering Meeting Detroit May 1973
- Brown A. E. Brainard N. R. “A Laboratory for 1975-76 Vehicle Emissions Testing.” Paper 730531 presented at SAE Automobile Engineering Meeting Detroit May 1973
- Beyerlein D. G. Casassa J. P. “Engine Dynamometers for the Testing of Catalytic Converter Durability” Paper 730558 presented at SAE Automobile Engineering Meeting Detroit May 1973