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Effect of CNG Start - Gasoline Run on Emissions from a 3/4 Ton Pick-Up Truck
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English
Abstract
This paper describes experiments to determine the effect on exhaust emissions of starting on compressed natural gas (CNG) and then switching to gasoline once the catalyst reaches operating temperature. Carbon monoxide, oxides of nitrogen, and detailed exhaust hydrocarbon speciation data were obtained for dedicated CNG, then unleaded gasoline, and finally CNG start -gasoline run using the Federal Test Procedure at 24°C and at -7°C. The result was a reduction in emissions from the gasoline baseline, especially at -7°C. It was estimated that CNG start - gasoline run resulted in a 71 percent reduction in potential ozone formation per mile.
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Citation
Springer, K., Smith, L., and Dickinson, A., "Effect of CNG Start - Gasoline Run on Emissions from a 3/4 Ton Pick-Up Truck," SAE Technical Paper 941916, 1994, https://doi.org/10.4271/941916.Also In
References
- Federal Register 40 CFR Ch1 (7-1-88) Para 86.113-90a 516 517
- Lowi, A. Jr. Carter, W.P.L. “A Method for Evaluating the Atmospheric Ozone Impact of Actual Vehicle Emissions,” SAE Paper No. 900710 1990
- Springer, K.J. Dickinson, A.G. “Car Cold-Start Hydrocarbon Control Considerations,” ASME Energy-sources Technology Conference & Exhibition January 31 February 4 1993 Houston, Texas