摘要
介绍了采用激光双曝光全息干涉技术测取柴油机压缩温度场的基本原理及实验过程。提出了利用绝热压缩区的温度作为计算干涉条纹的初始条件，从而为计算全息干涉条纹所对应温度提供了可行的方法。由柴油机压缩过程中缸内的温度场的测试结果可以看出，在柴油机压缩过程中，缸内温度变化幅度在４０Ｋ左右，最大温度梯度是在靠近燃烧室壁面大约０．５ｍ ｍ 的区域内。本文的实验结果，为分析柴油机压缩过程缸内传热过程提供了依据：所使用的试验方法。
The basic principle and the experimental process for measuring the compression temperature field of the diesel engine cylinder by means of laser doubleexposure holographic interferometry is introduced in the paper.Using the temperature in adiabatic compression zone as the initial conditions for calculating interference fringe is proposed,thus a feasible method is provided for calculating the temperature corresponding with holographic interference fringe.From the testing results of temperature field within cylinder during the compression process of diesel engine we can see,during compression process of diesel engine,the temperature variation amplitude within a cylinder is 40K or so and the maximum temperature gradient is in a zone about 0.5mm near the combustion chamber wall surface.The experimental results in the paper provide a basis for analyzing the heat transferring process within diesel engine cylinder.The method used in the paper will be a new tool for quantitatively measuring the temperature within diesel engine cylinder.
出处
《光电工程》
CAS
CSCD
1999年第5期31-36,共6页
Opto-Electronic Engineering
关键词
全息干涉测量
压缩温度场
柴油机
Holographic interferometry,Laser double exposure,Compression temperature field,Diesel engine.
