This report is an analysis of existing data on 16 vehicles in EPA's Controlled Environmental Test Facility. The analyses indicate that cold weather carbon monoxide (CO) emissions appear to depend most on fuel metering type, with the carbon monoxide emissions of the carburated vehicles being more sensitive to temperature changes than those of the fuel injected vehicles. Also, it is easier to predict the differences in carbon monoxide emissions ('cold' minus 'hot') versus temperature than it is to predict the ratio ('cold' divided by 'hot'). Since the sample was small and not representative of all emission control systems, the results might not apply to all vehicles.
Analysis of Carbon Monoxide Emissions as a Function of Ambient Temperature and Vehicle Parameters
1983
63 pages
Report
No indication
English
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