The report evaluates tailpipe and non-tailpipe hydrocarbon (HC) emissions from light-duty spark-ignition vehicles. The sources of information were unpublished data sets, generated mainly from 1990 through 1994, on emissions from volunteer fleets of in-use vehicles, and published Chemical Mass Balance source apportionments of HC in roadway tunnels and in urban air. The objective was to extract as much existing information as possible about magnitudes of running-loss emissions, hot soak emissions, diurnal emissions, and resting loss emissions, in absolute terms and in terms relative to one another and to tailpipe emissions. Relations between pressure- and purge-test failures and actual non-tailpipe emissions were also examined.
Assessment of Non-Tailpipe Hydrocarbon Emissions from Motor Vehicles
1997
208 pages
Report
No indication
English
Air Pollution & Control , Road Transportation , Reciprocation & Rotating Combustion Engines , Environment , Environmental Management & Planning , Hydrocarbons , Evaporative emission measurement , Exhaust emission measurement , Air pollution monitoring , Vehicle air pollution , Mass balance , Vehicle inspection , Air pollution in tunnels , Urban areas , Emission factors , Spark ignition engines , Fleet management , Diurnal variations , Non-tailpipe emissions , Tailpipe emissions , Running loss , Hot soak emissions
Non-Tailpipe Hydrocarbon Emissions from Motor Vehicles
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