Influence of butanol addition to diesel–biodiesel blend on engine performance and particulate emissions of a stationary diesel engine
Influence of butanol addition to diesel–biodiesel blend on engine performance and particulate emissions of a stationary diesel engine
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DOI：
10.1016/j.apenergy.2014.01.043
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发表时间：
2014-04
期刊：
影响因子：
11.2
通讯作者：
Zhihui Zhang;R. Balasubramanian
中科院分区：
文献类型：
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作者：
Zhihui Zhang;R. Balasubramanian
在柴油/生物柴油混合物中添加丁醇对颗粒排放的影响缺乏详细的调查。该研究首次全面评估了柴油-生物柴油-丁醇混合物对发动机性能的潜在影响，以及在发动机恒定转速和三种负载下单缸直接喷射压缩点火发动机排放的微粒的物理、化学和毒理学特性。以体积为20%的棕榈油甲酯（PME）配制超低硫柴油（ULSD）燃料（记为B20），再与体积为5%、10%和15%的丁醇混合。结果表明，添加10%的丁醇后，制动比油耗（BSFC）略有变化，并且在中高发动机负荷下制动热效率（BTE）有所改善。与B20相比，随着丁醇含量的增加，颗粒质量、元素碳（EC）浓度和颗粒总数均显著降低，而有机碳（OC）在颗粒中的比例则有所增加。此外，颗粒的几何平均直径（GMD）向更小的尺寸偏移。与B20相比，添加丁醇的颗粒提取物的总颗粒相多环芳烃（PAHs）排放量更低，致癌潜力更低，细胞毒性也更低。
There is a lack of detailed investigations on the effects of butanol addition to diesel/biodiesel blends on particulate emissions. This study represents the first attempt of its kind to fully evaluate the potential impact of diesel–biodiesel–butanol blends on engine performance, physical, chemical and toxicological properties of the particulates emitted by a single cylinder direct injection compression ignition engine with the engine working at a constant engine speed and at three engine loads. Ultralow sulfur diesel (ULSD) fuel blended with 20% palm oil methyl ester (PME) by volume was prepared (denoted as B20), and then blended with 5%, 10% and 15% of butanol by volume. The results indicated a marginal change in the brake specific fuel consumption (BSFC) up to 10% butanol addition, and an improvement in the brake thermal efficiency (BTE) at medium and high engine loads. Compared to B20, the particulate mass and element carbon (EC) concentrations, and the total number of particles were reduced significantly, whereas the proportion of organic carbon (OC) in the particles increased with an increase in butanol in the ternary fuel. Moreover, the geometric mean diameter (GMD) of the particles shifted towards smaller size. Butanol addition also showed a lower total particle-phase polycyclic aromatic hydrocarbons (PAHs) emission, lower carcinogenic potential and also lower cytotoxicity of particle extracts, compared to those of B20.