Biodiesel emulsion fuel is reported as one of the most feasible options capable of generating lower NOx emission than that from fossil fuels. However, oil and water in the emulsion fuel are easily separated and unstable. The aim of the present study is to consider the production and stability of biodiesel emulsion fuel by using tetraglycerin ester (CR-310), i.e., one of lipophilic surfactant, polyglycerol polyricinoleate (PGPR) and biodiesel, i.e., Waste cooking Oil Methyl Ester (WOME) produced based on waste cooking oil. The corresponding heat rate, water content, and viscosity are measured. Emphasis is placed on the effects of water content and surfactant on biodiesel emulsions. It is found that: (i) stable emulsion fuel is obtained by adding at least 2.0% of CR-310 and is maintained over 1 month, (ii) there is no effect of water content on stable emulsion fuel if CR-310 is used over 2.0%, and (iii) the viscosity of emulsion fuels is higher than that of the biodiesel fuel and is gradually increased with an increase in the water content.

据报道，生物柴油乳化燃料是最可行的选择之一，能够比化石燃料产生更低的NOx排放。但是，乳化燃料中的油和水容易分离并且不稳定。本研究的目的是考虑通过使用亲脂性表面活性剂，聚甘油聚蓖麻油酸酯（PGPR）中的一种甘油四酸酯（CR-310）和生物柴油（即烹饪油中的甲基酯）来生产和稳定生物柴油乳液燃料。 WOME）是基于废食用油生产的。测量相应的热速率，水含量和粘度。重点放在水含量和表面活性剂对生物柴油乳剂的影响上。发现：（i）通过添加至少2.0％的CR-310获得稳定的乳液燃料，并保持1个月以上，