柴油、生物柴油及混合燃料的对比试验

he comparison research between diesel and mixed fuel，diesel/bio-diesel, sprays were analyzed by using high resolving power digital camera. The results show that，the curve of fuel droplet size number distribution first goes up then goes down, finally tends to unchange. The small size droplet number is in the majority. With bio-diesel mixed ratio increases, fuel viscosity enlarges, Sauter mean diameter increases. The fuel droplet size is average because △s and △b of MB24 and B24 are small in smaller size droplets of fuel droplet. The fuel droplet average diameter of MB24 and B24 is small. The smaller size droplets of fuel droplet distribution are better, and uniformity of fuel droplet is more. The results show that 25% mixed bio-diesel is fit for the engine. The effect of sprays is better if a little diluted fuel like grain alcohol can be putted into.