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首页> 外文期刊>RSC Advances >Performance, combustion and emission characteristics of a direct injection VCR CI engine using a Jatropha curcas oil microemulsion: a comparative assessment with JCO B100, JCO B20 and petrodiesel
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Performance, combustion and emission characteristics of a direct injection VCR CI engine using a Jatropha curcas oil microemulsion: a comparative assessment with JCO B100, JCO B20 and petrodiesel

机译：使用麻风树麻疯树油微乳液的直喷式VCR CI发动机的性能，燃烧和排放特性：与JCO B100，JCO B20和石油柴油的对比评估

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A Jatropha curcas oil (JCO) based hybrid microemulsion fuel (MHBF) comprising pretreated JCO-1-butanol-ethanol was prepared. The fuel characteristics of the hybrid microemulsion fuel (MHBF) were determined as per standard tests methods recommended by ASTM and compared with JCO B20, JCO B100 and petroleum diesel. The performance, combustion and emission characteristics of MHBF were studied for the first time in a variable compression ratio (VCR) direct injection CI engine. The fuel properties of the MHBF formulation were comparable to that of JCO B100 (viscosity of 5.9 mm(2) s (1), density 0.872 g cm(-3) and higher heating value of 38.25 MJ kg(-1)), while the cold flow properties were found to be superior than JCO B100 and JCO B20. In terms of engine performance, the brake specific fuel consumption (BSFC) of MHBF was comparable to B100 and B20 but higher than petrodiesel; while brake thermal efficiency (eta(bte)) was close to that of JCO B100 but slightly lower than petrodiesel at almost all load conditions. In terms of emission quality, MHBF was found to be superior to all other tested fuels under all conditions of loading. Most significantly it was observed that up to 80% NOx reduction as compared to petrodiesel was achieved when operated at full load with the MHBF at the maximum compression ratio of 17.5. Obviously, this is a significant finding and a factor of motivation and investigation for future biofuel applications.
机译：制备了包含预处理的JCO-1-丁醇-乙醇的麻风树油（JCO）基混合微乳液燃料（MHBF）。根据ASTM推荐的标准测试方法确定了混合微乳液燃料（MHBF）的燃料特性，并与JCO B20，JCO B100和石油柴油进行了比较。首次在可变压缩比（VCR）直喷CI发动机中研究了MHBF的性能，燃烧和排放特性。 MHBF配方的燃料特性与JCO B100相当（粘度为5.9 mm（2）s（1），密度为0.872 g cm（-3）和更高的发热量为38.25 MJ kg（-1）），而发现冷流性能优于JCO B100和JCO B20。在发动机性能方面，MHBF的制动比油耗（BSFC）与B100和B20相当，但高于石油柴油。而制动器的热效率（eta（bte））接近JCO B100，但在几乎所有负载条件下都略低于石油柴油。在排放质量方面，发现在所有负荷条件下，MHBF均优于所有其他测试燃料。最显着的是，在最大压缩比为17.5的条件下，以MHBF满负荷运行时，与石油柴油相比，NOx的还原率高达80％。显然，这是一个重大发现，也是未来生物燃料应用的动力和研究因素。

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