高压汽油喷雾贯穿距和喷雾锥角经验公式研究  

Empirical Formulae of Spray Penetration Distance and Cone Angle of High-Pressure Gasoline Spray

作　　者：刘海峰[1] 黄志雄 丰雷 崔雁清 文铭升 明镇洋 尧命发[1] Liu Haifeng;Huang Zhixiong;Feng Lei;Cui Yanqing;Wen Mingsheng;Ming Zhenyang;Yao Mingfa(State Key Laboratory of Engines,Tianjin University,Tianjin 300072,China;The 53rd Research Institute of China Electronics Technology Group Corporation,Tianjin 300308,China)

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072 [2]中国电子科技集团公司第五十三研究所,天津300308

出　　处：《燃烧科学与技术》2023年第3期267-274,共8页Journal of Combustion Science and Technology

基　　金：国家自然科学基金创新群体资助项目(51921004);天津市杰出青年基金资助项目(20JCJQJC00160).

摘　　要：喷雾特征参数经验公式广泛应用于发动机研究和设计.笔者总结了目前常用的预测喷雾贯穿距和锥角的经验公式,并与高压汽油喷雾试验数据进行对比,验证这些经验公式是否适用于高压汽油喷雾.结果表明:在总结的喷雾贯穿距公式中,Dent公式、Arrègle公式、Schihl公式、Naber公式和Wakuri公式预测性较差,Arai公式预测性最好.在总结的喷雾锥角公式中,Arai公式综合环境气体密度和喷油压力的影响,对喷雾锥角试验值的预测性最好.笔者进一步在Arai公式基础上对系数进行修正,得到了新的经验公式,修正后的喷雾贯穿距和锥角预测公式与高压汽油喷雾试验值之间的平均相对误差分别减小到2.43%和1.34%.The empirical formulae of spray characteristic parameters are widely used in engine research and de-sign.The empirical formulae for predicting spray penetration distance and cone angle are summarized and com-pared with the experimental data of high-pressure gasoline spray to verify whether these empirical formulae are suitable for high-pressure gasoline spray.The results show that the Dent formula,Arrègle formula,Schihl for-mula,Naber formula and Wakuri formula have poor predictive performance,while Arai formula has the best pre-dictive performance.Among the summarized spray cone angle formulae,Arai formula is the best predictor of the experimental value of spray cone angle by considering the influence of ambient gas density and fuel injection pres-sure.Based on Arai formula,a new empirical formula is obtained.The average relative errors of spray penetration distance and cone angle between the results by the modified formula and the experimental values are reduced to 2.43%and 1.34%,respectively.

关 键 词：高压汽油喷雾 喷雾贯穿距 喷雾锥角 经验公式 

分 类 号：TK401[动力工程及工程热物理—动力机械及工程]