Effect of phase 1 and phase 2 gasolines on evaporative and exhaust emissions from light duty vehicles. Final report
The objective of this study was to investigate the emissions impact of reformulated gasolines on evaporative and exhaust emissions from small fleet of light-duty automobiles. Three gasolines were used: pre-1992 California gasoline, California Phase 1 gasoline, and California Phase 2 gasoline. The pre-1992 fuel was blended to specifications representative of gasolines sold in California prior to the introduction of Phase 1 gasoline in 1992, while the Phase 1 and 2 fuels were blended to the specifications of the California regulations, including the addition of oxygenates such as methyl tertiary butyl ether (MTBE) or ethanol. The vehicles were tested over the Federal Test Procedure (FTP) for exhaust emissions, and over the FTP and the Air Resources Board`s (ARB`s) extended high temperature evaporative emissions test procedure for evaporative emissions. The test results showed a general reduction of hydrocarbon and carbon monoxide exhaust emissions for all gasoline blends, while evaporative emissions were increased for the ethanol blend.
- Research Organization:
- Automotive Testing Labs., Inc., East Liberty, OH (United States)
- OSTI ID:
- 402133
- Report Number(s):
- PB--96-210844/XAB; CNN: Contract CARB-A132-183
- Country of Publication:
- United States
- Language:
- English
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