Study the effect of adding biofuel from jojoba oil modified with bio-extract on the diesel engine performance

Blends of diesel fuel and biofuel of jojoba oil before and after modification with volume ratio of (5%) of the bio-extract containing beneficial bacteria and yeasts were prepared at different mixing ratios. Where the engine's fuel consumption and the maximum pressure in each cylinder were measured, and then the exhaust gases, smoke and fog emitted from the engine were analysed. The results showed that adding jojoba oil modified with bio-extract to diesel fuel reduces the emission of gases CO, CO2, and HC by about 50%, 35% and 14.4% respectively. It also leads to a reduction in engine fuel consumption by (18.75%) at engine speed (200rpm).