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Automotive Hydrocarbon Emission Patterns in the Measurement of Nonmethane Hydrocarbon Emission Rates
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English
Abstract
The advent of emission control technology has resulted in significant changes in both the total mass and detailed patterns of hydrocarbons emitted from automobiles. Emission rates of 56 hydrocarbons from 22 motor vehicles, including catalyst and noncatalyst configurations, were determined for the Federal Urban Driving Cycle.
An increased relative abundance of methane is indicated for vehicles equipped with oxidation catalysts. In view of the photochemically non-reactive nature of methane, simple and economic procedures for determination of vehicle nonmethane hydrocarbon emission rates are evaluated. In general the procedures evaluated require independent total hydrocarbon and methane analysis, with the nonmethane hydrocarbon level calculated by difference.
The procedures are evaluated by comparison of indicated nonmethane hydrocarbon emission rates with rates obtained by summation of individual compound rates determined by advanced gas chromatographic procedures.
Authors
Citation
Black, F. and High, L., "Automotive Hydrocarbon Emission Patterns in the Measurement of Nonmethane Hydrocarbon Emission Rates," SAE Technical Paper 770144, 1977, https://doi.org/10.4271/770144.Also In
References
- Advanced Notice of Proposed Rulemaking “Hydrocarbon Exhaust Emission Standards and Test Procedures to Permit Exclusion of Methane,” Federal Register 39 92 May 10 1974
- “Control of Air Pollution from New Motor Vehicles and New Motor Vehicle Engines,” Federal Register 37 221 Nov. 15 1972 39 101 May 23 1974
- Burch D. E. Pembrook J. D. “Instrument to Monitor CH 4 , CO, and CO 2 in Auto Exhaust,” Contract No. 68-02-0587, Report EPA-650/2-73-030 Office of Research and Development, USEPA Washington, D. C. October 1973
- SAE Recommended Practice “Methane Measurement Using Gas Chromatography” SAE J1151 Society of Automotive Engineers, Inc. 18121 E. Eight Mile Road, East Detroit, Mich. July 1976
- Black F. M. High L. E. “Effect of Fuel Composition on the Flame Ionization Detection of Hydrocarbons,” J. Environ. Sci. Health 4 & 5 331 339 1976
- Black F. M. High L. E. Sigsby J. E. “The Application of Total Hydrocarbon Flame Ionization Detectors to the Analysis of Hydrocarbon Mixtures from Motor Vehicles,” J. Water, Air, and Soil Pollution 5 53 62 1975
- Coordinating Research Council “The Oxygen Effect in Flame Ionization Response to Hydrocarbons,” CY-65 Report Project No. CM-4-58: Exhaust Emission Measurements Thirty Rockefeller Plaza, N. Y., N. Y. 1966
- Mohan P. V. Chairman SAE Exhaust Emissions Measurement Subcommittee Automotive Emissions Committee, Emission Laboratory GM Proving Grounds, Mil ford, Mich. February 1975