复配乳化剂乳化柴油的经济性和排放特性

为了研究乳化柴油的经济性和排放特性，该文以亲水亲油平衡值HLB（hydrophilic and lipophilic balance）选择复配乳化剂，通过适当的乳化工艺配制乳化柴油，并在1135柴油机上对乳化柴油和纯柴油的经济性和排放特性进行了对比试验。研究结果表明，在柴油机结构参数和调整参数不作改变的情况下，柴油机燃用乳化柴油的碳烟和NOX排放显著降低且有一定的节油效果；添加了助燃剂二茂铁的乳化柴油在降低碳烟、NOX和HC排放方面优势更加明显；含水率的不同对乳化柴油的燃烧有一定影响，综合考虑节油及排放效果，确定了适用本机的较佳含水率体积百分数为13%。该研究结果对于改善发动机经济性和降低排放具有实际的应用价值。

Engine economical performances and emissions characteristics of emulsified diesel fuel with compound-surfactants

The emulsified fuel was prepared through selecting appropriate compound-surfactants on the basis of the HLB (hydrophilic and lipophilic balance) value and the specific emulsification technology. Comparative experiments between the emulsified fuel and diesel fuel were undertook in the model 1135 diesel engine, and the difference in engine economical performances and emissions characteristics between them were studied. The results indicates that the emulsified fuel result in significant decrease in the emissions of soot and NOX and proper increase in fuel-efficiency without modification in the engine structure compared with the diesel fuel; especially for the emulsified diesel with accelerant ferrocene. Besides, various water-content ratios will affect the combustion of the emulsified diesel fuel, and an appropriate one for this engine is 13% in volume after considering fuel-saving and emissions.