首页>
外文期刊>Heat Transfer
>The effect of Sr-doped zinc oxide nanoadditives on the performance and emission parameters of a VCR engine powered by soybean biodiesel
【24h】
The effect of Sr-doped zinc oxide nanoadditives on the performance and emission parameters of a VCR engine powered by soybean biodiesel
展开▼
机译：The effect of Sr-doped zinc oxide nanoadditives on the performance and emission parameters of a VCR engine powered by soybean biodiesel
In the present study, the effects of soybean biodiesel (SB)-diesel blends containing 1% strontium (Sr) doped zinc oxide (ZnO) nanoparticles (NPs) on the performance and emission parameters of a variable compression ratio (VCR) engine were investigated. To make the fuel blends, 25% soybean biodiesel (SB25) was added to the diesel. To improve the blend's stability, Sr/ZnO NP additions were blended with SB25 at 50 and 75 ppm utilizing an ultrasonication method and a surfactant at 2%. Various physicochemical techniques, such as X-ray diffraction, field-emission scanning electron microscopy, energy-dispersive X-ray spectroscopy, and ultraviolet spectroscopy, were used to characterize the produced NPs. These blends improved overall engine characteristics when used with a VCR. In comparison to the absence of nanoadditives, the brake thermal efficiency increased by 10.37% and the brake-specific fuel consumption decreased by 16.76% while using 50 ppm Sr/ZnO NPs additive in SB25 (SB25Sr/ZnO50). In addition, the presence of Sr/ZnO in SB25 results in lower harmful emissions such as hydrocarbon, CO, CO2, and smoke, which are reduced by 11.20%, 13.81%, 41.43%, and 21.34%, respectively, when compared to SB25 fuel. The Sr/ZnO NPs in the blend are an excellent choice for improving engine emission and performance.
展开▼
机译：在目前的研究中,大豆的影响包含1%的生物柴油(某人)柴油混合(Sr)锶掺杂氧化锌(氧化锌)在性能和纳米颗粒(NPs)发射参数变量的压缩比(VCR)引擎了。大豆生物柴油混合燃料,25% (SB25)添加到柴油。稳定,Sr /氧化锌NP添加混合利用一个SB25在50和75 ppm超声破碎法方法和表面活性剂为2%。各种物理化学技术,如x射线场发射扫描电子衍射显微镜、能量色散x射线谱,和紫外光谱,被用来NPs产生的特征。改善整体引擎特性时使用一个录像机。nanoadditives制动热效率增加了10.37%,brake-specific燃料消费下降了16.76%,而使用50ppm Sr /氧化锌NPs SB25添加剂(SB25Sr / ZnO50)。此外,在SB25 Sr /氧化锌的存在结果等降低有害排放烃,CO, CO2,和烟降低了11.20%,13.81%,41.43%,21.34%,分别相比SB25燃料。Sr /氧化锌NPs混合是一个很好的选择改善发动机排放和性能。
展开▼
