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Investigation on Cold Starting and Warming up of Gasoline Engines with EFI
Published October 30, 2007 by Society of Automotive Engineers of Japan in Japan
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The cold starting and cold-state running cycle (i.e. engine warming up) of gasoline engines are the key points of exhaust emissions formation of modern engines, and also one of the very important targets for the increasingly stringent emissions regulations. The combustion stability in gasoline engine cold starting and warming up will impact the formation of its exhaust emissions. This paper introduces the improvement in cold starting and warming up combustion process for the motorcycle gasoline engine by high-energy, dual-spark plug based rapid burning system. Test results showed that the high-energy, dual-spark plug based rapid burning system was very helpful to rapid ignition under the engine cold starting condition. Meanwhile, because of increasing the burning velocity of the engine mixture, this solution can realize the larger ignition retard and stable combustion process under the engine warming-up condition. As a result, it was very helpful to increase the exhaust gas temperature and shortened the light-off time of TWC to achieve the improvement exhaust emission performances for gasoline engines with EFI.
- Chunming Hu - Tianjin Internal Combustion Engine Research Institute, Tianjin University
- Xijuan Song - Tianjin Internal Combustion Engine Research Institute, Tianjin University
- Na Liu - Tianjin Internal Combustion Engine Research Institute, Tianjin University
- Wei Li - Tianjin Internal Combustion Engine Research Institute, Tianjin University
CitationHu, C., Song, X., Liu, N., and Li, W., "Investigation on Cold Starting and Warming up of Gasoline Engines with EFI," SAE Technical Paper 2007-32-0070, 2007.
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