一、前言为满足人们对柴油机提出的高效率和低公害的要求,需要定量地掌握柴油机的燃烧过程。为此,必须随时测量决定燃烧过程的主要因素。柴油机的燃烧状态是瞬变的,而且变动大,所以在其测量方法上,不但测量值要具有必需的精度,而且空间、时间分辨率都要求很高。然而迄今为止,这种测试技术尚不完善, I. Foreword In order to meet people’s demands for high efficiency and low pollution caused by diesel engines, it is necessary to quantitatively grasp the combustion process of diesel engines. For this purpose, the main factors that determine the combustion process must be measured at all times. Diesel combustion state is transient, and changes, so in its measurement methods, not only to measure the value to have the necessary accuracy, but also space, time resolution are demanding. However, so far, this test technology is not perfect,