ABSTRACT

This paper investigates the utilization of response surface methodology (RSM) to optimize the engine performance and exhaust emission parameters of a compression ignition (CI) engine which operate using neat Hermetia illucens larvae oil (HILO) blends of 25, 50, 75, and 100% named as B25, B50, B75, and B100. The engine testing experiments were operated at different engine loads for each fuel blends and at 25 different experimental conditions. The brake power and brake mean effective pressure (BMEP) of HILO-diesel fuel blends were almost similar with diesel fuel while the brake specific fuel consumption (BSFC) was slightly increased. Furthermore, NO_x emissions decreased with HILO addition. However CO, CO₂, and UHC emissions increased. Optimization of independent variables was achieved via the RSM desirability approach with the aim of maximizing performance and minimizing emissions parameters. Therefore, the engine performance and emissions parameters for various HILO-diesel fuel blends were observed nearly similar to diesel fuel. An engine load of 92.72% and a blend of 6.43% of HILO with 93.57% diesel fuel were observed to be an optimum input point. The finding of this investigation exposed that at optimum input point, the values of the brake power, BMEP, BSFC, BTE, CO, CO₂, UHC, and NO_x were found to be 3.21 kW, 399.70 kPa, 0.071 mg/J, 27.26, 0.024, 5.30%, 0.62 ppm, and 537.93 ppm, respectively.

摘要

本文研究了利用响应面方法（RSM）来优化压缩点火（CI）发动机的发动机性能和排气排放参数的方法，该发动机使用25、50、75和100的纯Hermetia illucens幼虫油（HILO）混合物进行操作％分别命名为B25，B50，B75和B100。每种燃料混合物的发动机测试实验均在不同的发动机负载下进行，并在25种不同的实验条件下进行。HILO-柴油混合燃料的制动功率和制动平均有效压力（BMEP）与柴油几乎相似，而制动比燃料消耗（BSFC）则略有增加。此外，NO _X排放量HILO除了降低。但是CO，CO ₂，UHC排放增加。通过RSM合意性方法实现了自变量的优化，目的是最大化性能并最小化排放参数。因此，观察到各种HILO-柴油混合燃料的发动机性能和排放参数几乎与柴油相似。观察到最佳的输入点是92.72％的发动机负载和6.43％的HILO与93.57％柴油的混合气。调查结果表明，在最佳输入点，制动功率，BMEP，BSFC，BTE，CO，CO ₂，UHC和NO _x的值分别为3.21 kW，399.70 kPa，0.071 mg / J， 27.26、0.024、5.30％，0.62 ppm和537.93 ppm。