Ramalingam Selvakumar, Mahalakshmi N V
Department of Mechanical Engineering, Anna University Chennai Tamilnadu India
RSC Adv. 2020 Jan 27;10(8):4274-4285. doi: 10.1039/c9ra09582a. eCollection 2020 Jan 24.
In the current work, the influences of biodiesel-diesel-hexanol and biodiesel-diesel-ethanol blends on compression ignition engine characteristics were experimentally investigated. Experiments were conducted on a diesel engine at 0%, 25%, 50%, 75% and 100% load conditions run at a constant speed of 1500 rpm. The results revealed that B90-D5-H5 acquired the lowest BSFC and maximum BTE of 0.375 kg kW h and 28.8%, respectively, and B100 had the highest BSFC of 0.425 kg kW h. B90-D5-H5 had the highest cylinder peak pressure of 74 bar at 4°CA aTDC. The maximum heat release rate (HRR) and longer ignition delay (ID) period of 44 J per °CA and 14.4°CA, respectively, were attained in the B90-D5-H5 blend. At 100% load condition, the lowest amount of carbon monoxide (CO) of 0.32% vol. was acquired in the B80-D5-E15 blend. The maximum nitric oxide (NO) emission of 1090 ppm was also acquired in the B80-D5-E15 blend. B100 had the lowest NO of 846 ppm; B80-D5-E15 had the lowest unburned hydrocarbon (UBHC) emission of 34 ppm at 100% load and the lowest smoke opacity of 34%. Biodiesel-diesel-alcohol blends improve engine performance and decrease emissions compared to the conventional diesel. The utilization of biodiesel-diesel-alcohol blends reduces the consumption of diesel. Hence, ethanol and hexanol are recommended as potential alternative additives in biodiesel-diesel blends to improve engine performance and reduce emissions.
在当前工作中，对生物柴油 - 柴油 - 己醇和生物柴油 - 柴油 - 乙醇混合燃料对压燃式发动机特性的影响进行了实验研究。在一台柴油发动机上进行了实验，该发动机在1500转/分钟的恒定转速下运行，负载条件分别为0%、25%、50%、75%和100%。结果表明，B90 - D5 - H5的最低制动比油耗（BSFC）为0.375千克/千瓦·时，最大制动热效率（BTE）为28.8%，而B100的最高制动比油耗为0.425千克/千瓦·时。B90 - D5 - H5在上止点前4°CA时具有最高的气缸峰值压力74巴。B90 - D5 - H5混合燃料的最大放热率（HRR）为每°CA 44焦耳，最长着火延迟期（ID）为14.4°CA。在100%负载条件下，B80 - D5 - E15混合燃料的一氧化碳（CO）含量最低，为0.32%（体积）。B80 - D5 - E15混合燃料的一氧化氮（NO）排放量也最高，为1090 ppm。B100的NO排放量最低，为846 ppm；B80 - D5 - E15在100%负载时未燃碳氢化合物（UBHC）排放量最低，为34 ppm，烟度最低，为34%。与传统柴油相比，生物柴油 - 柴油 - 醇混合燃料可改善发动机性能并减少排放。生物柴油 - 柴油 - 醇混合燃料的使用减少了柴油消耗。因此，推荐将乙醇和己醇作为生物柴油 - 柴油混合燃料中潜在的替代添加剂，以改善发动机性能并减少排放。
