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Heavy-Duty Gasoline Engine Emission Sensitivity to Variations in the 1984 Federal Test Cycle
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English
Abstract
An attempt at quantification of emission sensitivity of heavy-duty gasoline engines to variations in the 1984 Federal Certification transient test cycle was made. A brief overview of the Federal Test Procedure is presented, followed by emission test results from several dynamometer controller miscalibration modes. In general, the results indicated that certain modes of controller calibration can produce significant emission variations well within the limits of the 1984 FTP validation criteria. The data indicated that some validation criteria require tightening or respecification to assure repeatable test results.
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Citation
Cox, T., "Heavy-Duty Gasoline Engine Emission Sensitivity to Variations in the 1984 Federal Test Cycle," SAE Technical Paper 801370, 1980, https://doi.org/10.4271/801370.Also In
References
- “Gaseous Emission Regulations for 1984 and Later Model Year Heavy-Duty Engines,” Federal Register 45 14 January 21 1980
- Cox T. Passavant G. Rags-dale L. “1969 Heavy-Duty Engine Baseline Program and 1983 Emission Standards Development,” EPA Technical Report No. SDSB 79-23, NTIS No. PB 80120678 May 1979
- Winer B. J. “Statistical Principles in Experimental Design,” 2nd McGraw-Hill, Inc. 1971