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首页> 外文会议>World Congress >Studies on Performance and Exhaust Emissions of a CI Engine Operating on Diesel and Diesel Biodiesel Blends at Different Injection Pressures and Injection Timings
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Studies on Performance and Exhaust Emissions of a CI Engine Operating on Diesel and Diesel Biodiesel Blends at Different Injection Pressures and Injection Timings

机译：在不同注射压力和注射时间对柴油机和柴油机生物柴油混合的CI发动机性能和排放研究

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摘要

The effect of variation in injection pressure and injection timing on the performance and exhaust emission characteristics of a direct injection, naturally aspirated diesel engine operating on diesel and diesel-biodiesel blends were studied. A three-way factorial design consisting of four levels of injection pressure (150,210, 265,320 bar), four levels of injection timing (19° btdc, 21.5° btdc, 26° btdc, and 30.5° btdc) and five different fuel types (D100, B10, B20, B40, and B60) were employed in this test. The experimental analysis shows that when operating with Linseed Oil Methyl Ester-Diesel blends, we could increase the injection pressure by about 25% over the normal value of 20 MPa. The engine performance and exhaust emission characteristics of the engine operating on the ester fuels at advanced injection timing were better than when operating at increased injection pressure. As for environmental protection, the replacement requires advancing the injection timing in order to achieve a pollution level lower than that produced by diesel fuel. This injection timing must be advanced 22% (26° btdc to 31.5° btdc) from the setting provided by the manufacturer to obtain the best smoke results with the ester fuels. Engine performance deteriorated in an attempt to retarding the injection timing and reduced injection pressure.
机译：研究了注射压力和喷射时间对直接注射的性能和废气发射特性的影响，自然吸气的柴油发动机在柴油和柴油机 - 生物柴油混合物上进行了直接注射的。具有四个水平的注射压力（150,210,265,320巴），四个喷射正时（19°BTDC，21.5°BTDC，26°BTDC和30.5°BTDC）和五种不同燃料类型（D100在该测试中使用B10，B20，B40和B60）。实验分析表明，当用亚麻籽油甲酯 - 柴油混合物操作时，我们可以在20MPa的正常值中将喷射压力增加约25％。在高级喷射正时在酯燃料上操作的发动机的发动机性能和排气特性优于在增加的喷射压力下操作时。至于环保，更换需要推进注射时间，以实现低于柴油燃料生产的污染水平。该喷射正时必须从制造商提供的设置中提前22％（26°BTDC至31.5°BTDC），以获得与酯燃料的最佳烟雾结果。发动机性能劣化，试图延长喷射正时和降低的注射压力。

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