This study aims to evaluate the impact of blending castor oil methyl ester with lower viscus biodiesel which is manufactured from waste cooking oil (WCOB) on the combustion, performance, and emission characteristics for four-stroke DI diesel engine. Two types of biodiesel fuel were produced on a laboratory-scale. Castor oil methyl ester was mixed with WCOB to enhance its physical properties. The blends were tested at constant engine speed at various loads. The results obtained from this study show that mixing WCOB oil methyl ester with castor biodiesel can slightly enhance the engine characteristics. In-cylinder pressure increases by 1.9% when using the mixture blends compared to castor biodiesel blends. NO_x levels enhanced by 12%, and CO emission levels decreased by 27.6% using mixed-blend. The recommended fuel is mixing castor and waste cooking biodiesels with 15% for each of them with 70% of diesel fuel, this fuel has been noticed to give enhancements in almost all engine parameters.

这项研究旨在评估将蓖麻油甲酯与低粘度生物柴油混合而成的效果，该低粘度生物柴油由废烹饪油（WCOB）制造，对四冲程DI柴油机的燃烧，性能和排放特性产生影响。在实验室规模上生产了两种类型的生物柴油燃料。蓖麻油甲酯与WCOB混合以增强其物理性能。在各种负载下以恒定的发动机转速测试混合物。从这项研究中获得的结果表明，将WCOB油甲酯与蓖麻油生物柴油混合可以稍微提高发动机的性能。与蓖麻生物柴油混合物相比，使用混合物混合物时缸内压力增加1.9％。NO _X使用混合混合技术可将二氧化碳排放量提高12％，并将二氧化碳排放水平降低27.6％。推荐的燃料是将蓖麻和废烹饪生物柴油中的15％与70％的柴油混合在一起，已注意到这种燃料几乎可以改善所有发动机参数。