Emissions from Carbureted and Timed Port Fuel Injected Engines |
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| Authors: | Ralph C. Stahman Andrew H. Rose Jr. |
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| Affiliation: | 1. Chief , Automotive Research Unit, U. S. Department of Health, Education and Welfare , Cincinnati , Ohio , USA;2. Chief , Engineering Research and Development Section, Laboratory of Engineering and Physical Sciences, Division of Air Pollution, Robert A. Taft Sanitary Engineering Center, Public Health Service, U. S. Department of Health, Education, and Welfare , Cincinnati , Ohio , USA |
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| Abstract: | A comparison was made between the exhaust emission characteristics of a popular make car when equipped with the stock carburetor and when equipped with a timed-port fuel injection system. A brief optimization study was made to adjust the spark timing and fuel flow characteristics to minimize emissions. Performance and economy were compared between the fuel injected and carbureted versions. Emission measurements of CO, CO2, and hydrocarbon were made in road tests by proportional sampling and through the California Cycle by continuous nondispersive infra red instrumentation. |
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