Investigation of the Effects of Gasoline-Bioethanol Blends on Engine Performance and Exhaust Emissions in a Spark Ignition Engine

S. Yelbey, M. Ciniviz
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引用次数: 8

Abstract

In this study; 95 octane unleaded gasoline and bioethanol were tested as fuel in a spark-ignition engine by blending bioethanol with gasoline in certain proportions (2%, 4%, 6%, 8%, 10%). Tests were carried out at five different engine loads for a constant engine speed of 2500 rpm. The variations in engine performance parameters (brake thermal efficiency, brake specific fuel consumption, brake specific energy consumption) and exhaust emissions (HC, CO, CO 2 and O 2 ) were investigated on the basis of test fuel and engine load. According to the test results, with the increase of bioethanol ratio in the blend, brake specific fuel consumption values ​​increased by 9.71% and brake thermal efficiency values ​​decreased by approximately 4.97% compared to gasoline. There was decrease in HC and CO emissions and an increase in CO 2 emissions with bioethanol addition.
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汽油-生物乙醇混合燃料对火花点火发动机性能和废气排放影响的研究
在本研究中;将95辛烷值无铅汽油和生物乙醇按一定比例(2%、4%、6%、8%、10%)与汽油混合,作为火花点火发动机的燃料进行了试验。测试在五种不同的发动机负载下进行,发动机转速恒定在2500转/分。在试验燃料和发动机负荷的基础上,研究了发动机性能参数(制动热效率、制动比油耗、制动比能耗)和废气排放(HC、CO、co2和o2)的变化规律。试验结果表明,与汽油相比,随着混合燃料中生物乙醇比例的增加,制动比油耗值提高了9.71%,制动热效率值降低了约4.97%。生物乙醇的加入降低了HC和CO的排放量,增加了co2的排放量。
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