激光测试技术及其在发动机测试研究中的进展及应用前景

研究发动机能耗、排放、振动和噪声等特性,可以为改进发动机性能等提供依据,但须采用准确、方便和有效的测试方法。激光测试技术是近十几年来迅速发展起来的一门高新技术,以能量密度高,方向性和相干性好的激光为光源,可对发动机进行诸如气流速度、燃油喷雾、流场温度、浓度、排放物和发动机振动等特性进行测定。该文较详细地叙述了激光测试技术的原理、方法、发展概况及其应用前景

Applications and Prospects of Laser Measurement Technology on Research of Combustion Engine

Research on decreasing consumption of energy, levels of exhaust, vibration and noisiness can provide a basis for improving engine performance; however, more exact, convenient and efficient methods must be used to measure an engine's working properties. Laser Measurement Technology (LMT), as an advanced science and technology, has been developing rapidly in the past decade. LMT provides high density energy with accurate directionality and coherency, which can measure and analyze variant properties of combustion engines, such as flow rate, fuel spray characteristcs, temperature of flow field, concentration of spray and level of exhaust. The principle methods of LMT were described; the status of LMT development and the prospects of application in engine research were also discussed in the paper.