This present work focused on investigating the thermal behavior and emission level of sapodilla oil mixed with diesel to an internal combustion (IC) engine. The behavior of the engine is measured via brake thermal efficiency (BTE), brake-specific energy consumption (BSEC), heat release rate (HRR), cylinder pressure, and cumulative heat release rate (CHRR). The test results were evaluated with diesel fuel. Carbon deposits were low in sapodilla seed oil with slight variation of calorific value than standard diesel fuel. BTE value for case B20 is found to equal diesel fuel. For lower and higher blends, the cylinder pressures are lower than the diesel fuel. HRR decreased as increased of the blend ratio. Inferior blends of sapodilla are emitted lower HC and CO. The BTE of B100 works 88.13% efficiently, similar to diesel for low load conditions. When compared to diesel, a maximum NO_x reduction of up to 30% was achieved while using the sapodilla blend. It is found that the oil derived from the sapodilla seed kernels will be the promising additive for fossil fuels for a greener environment.

中文翻译：

---

人心果籽油混合燃料内燃机的排放测量分析

目前的工作重点是研究人心果油与柴油混合到内燃机 (IC) 发动机的热行为和排放水平。发动机的行为通过制动热效率 (BTE)、制动特定能耗 (BSEC)、放热率 (HRR)、气缸压力和累积放热率 (CHRR) 来衡量。测试结果用柴油进行评估。人心果籽油中的碳沉积物较低，热值比标准柴油略有变化。发现案例 B20 的 BTE 值等于柴油燃料。对于较低和较高的混合物，气缸压力低于柴油燃料。HRR随着混合比的增加而降低。人心果的劣质混合物排放的 HC 和 CO 较低。 B100 的 BTE 工作效率为 88.13%，类似于低负载条件下的柴油。使用人心果混合物时，_x减少高达 30%。研究发现，从人心果籽仁中提取的油将成为一种有前途的化石燃料添加剂，以实现更绿色的环境。