中文摘要：

生物燃料作为化石燃料的替代物越来越受到人们的关注,脂肪酸乙酯（FAEEs）是生物燃料中的重要成分。为了获取生物燃料组分的物性参数,补充现有数据不足,利用布里渊散射法对3种脂肪酸乙酯的声速进行了测量,测量温度范围为293.15~473.15 K,压力为0.1 MPa。为方便工程应用,实验数据被拟合成温度的函数,实验值与关联式计算值的相对偏差绝对平均值为：0.13%（己酸乙酯）、0.11%（庚酸乙酯）、0.08%（辛酸乙酯）。实验数据也被用来评估两种生物燃料声速预测方法,结果表明,Wada模型优于Auerbach模型,更适合脂肪酸乙酯的声速预测。

英文摘要：

Biodiesels are regarded as the promising additives for fossil fuels,and fatty acid ethyl esters（FAEEs） are the main components of biodiesels.In order to obtain their speed of sound data,the speed of sound of three FAEEs were measured in this work using Brillouin light scattering method at temperatures from 293.15 K to 473.15 K and pressure of 0.1 MPa.The correlation for the speed of sound was also fitted as the function of temperature.The AAD was 0.13% for ethyl hexanoate,0.11% for ethyl cinnamate and 0.08% for ethyl caprylate.The experimental data were also used to assess the predictive ability of Wada＇s model and Auerbach＇s model.It was shown that the former performed better than the latter one for the prediction of speed of sound of FAEEs.