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The paper presents the research designed to develop a spark-ignition engine, two-stroke engine fuelled with ethanol and ethanol-gasoline blends. The test engine chosen was a small single cylinder, two strokes provided with a carburetor. The results of experimental research data obtained on this version were used as a baseline for the next phase of the research. In order to obtain the test engine configuration, the engine was modified, as follows: the compression ratio was increased from 8.0:1 to 9:1 to improve the engine efficiency; the carburetor was replaced by a direct fuel injection system in order to control precisely the fuel- mass per cycle, taking into account the measured air-mass intake. The cylinder’s processes were simulated on a virtual model. The experimental research works were focused on determining the parameters which control the combustion process of two-stroke engine to obtain the best energetic and ecologic parameters. The fuel consumption data obtained during the tests are used to determine the emissions of GNG on basis of the emissions’ factors.
The main conclusion of the results was the GHG emissions using “well-to-wheels” method. The pollutants were measured for all operating test points and were compared, taking into account the initial engine configuration.
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Aleonte, M., Cosgarea, R., Jelenschi, L., Cofaru, C.: Technical solutions for improving the efficiency of a two stroke SI engine. Bull Transilvania Univ. Braşov Ser. I Eng. Sci. 4(53), 6 (2011)
Radu, A.P.C., Negurescu, N.: An experimental study on performance and emission characteristics of a bioethanol fuelled S.I. engine. U.P.B. Sci. Bull. Ser. D 76(1), 193–200 (2014). ISSN 1454-2358
- Effects of Re-designing of Two-Stroke Engine Fuelled with Gasoline - Ethanol Blend on GHG and Pollutant Emissions
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