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首页> 外文期刊>Energy Conversion & Management >Comparative performance and emissions study of a direct injection Diesel engine using blends of Diesel fuel with vegetable oils or bio-diesels of various origins
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Comparative performance and emissions study of a direct injection Diesel engine using blends of Diesel fuel with vegetable oils or bio-diesels of various origins

机译：使用柴油与各种来源的植物油或生物柴油的混合物的直喷式柴油机的比较性能和排放研究

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An extended experimental study is conducted to evaluate and compare the use of various Diesel fuel supplements at blend ratios of 10/90 and 20/80, in a standard, fully instrumented, four stroke, direct injection (DI), Ricardo/Cussons 'Hydra' Diesel engine located at the authors' laboratory. More specifically, a high variety of vegetable oils or bio-diesels of various origins are tested as supplements, i.e. cottonseed oil, soybean oil, sunflower oil and their corresponding methyl esters, as well as rapeseed oil methyl ester, palm oil methyl ester, corn oil and olive kernel oil. The series of tests are conducted using each of the above fuel blends, with the engine working at a speed of 2000 rpm and at a medium and high load. In each test, volumetric fuel consumption, exhaust smokiness and exhaust regulated gas emissions such as nitrogen oxides (NO_x), carbon monoxide (CO) and total unburned hydrocarbons (HC) are measured. From the first measurement, specific fuel consumption and brake thermal efficiency are computed. The differences in the measured performance and exhaust emission parameters from the baseline operation of the engine, i.e. when working with neat Diesel fuel, are determined and compared. This comparison is extended between the use of the vegetable oil blends and the bio-diesel blends. Theoretical aspects of Diesel engine combustion, combined with the widely differing physical and chemical properties of these Diesel fuel supplements against the normal Diesel fuel, are used to aid the correct interpretation of the observed engine behavior.
机译：进行了扩展的实验研究，以评估和比较在标准的，配备齐全的四冲程直喷（DI），里卡多/ Cussons'Hydra混合比为10/90和20/80的各种柴油补充剂中的使用情况。柴油发动机位于作者的实验室。更具体地说，测试了各种来源的多种植物油或生物柴油作为补充剂，即棉籽油，大豆油，向日葵油及其相应的甲酯，以及菜籽油甲酯，棕榈油甲酯，玉米油和橄榄仁油。使用上述每种混合燃料进行一系列测试，发动机以2000 rpm的速度运转，并处于中等和高负荷下。在每个测试中，都要测量燃料的体积消耗，废气的烟气和废气调节的气体排放，例如氮氧化物（NO_x），一氧化碳（CO）和总未燃烧的碳氢化合物（HC）。根据第一次测量，可以计算出比油耗和制动器热效率。确定并比较与基准发动机（即使用纯柴油工作时）相比，测得的性能和废气排放参数之间的差异。在植物油混合物和生物柴油混合物之间进行了比较。柴油发动机燃烧的理论方面，与这些柴油燃料补充剂相对于普通柴油的广泛不同的物理和化学性质相结合，可用于帮助正确解释观察到的发动机性能。

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