Study on combustion characteristics of lean mixture ignited by diesel fuel injection |
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Institution: | 1. Institute of Internal Combustion Engines, Technische Universität München, Germany;2. Institute of Technical Combustion, Leibniz Universität Hannover, Germany |
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Abstract: | We have investigated combustion characteristics of lean gasoline–air pre-mixture ignited by diesel fuel injection using a high compression direct injection diesel engine. Gasoline was supplied as a uniform lean mixture by using carburetors, and diesel fuel was directly injected into the cylinder. It was confirmed that the lean mixture of air–fuel ratio between 150 and 35 could be ignited and burned by this ignition method. As the diesel fuel injection increased, HC concentration decreased, and NO and CO concentration increased. The exhaust gas emission of pollutants could be reduced when lean mixture was ignited by an optimum diesel fuel injection. |
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