论文部分内容阅读
按照内燃机车工作特性,用由И-10应变传感器、УТС-12应变仪及Н-102光线示波器所组成的应变指示器来显示具有涡轮高增压器的Д-70柴油机的1ЧН24/27气缸的工作状况时,记录出气缸在燃烧-膨胀时的极其强烈的压力振动。大家都知道,压力波形图曲线的起伏,可能是由于燃气的振动,也可能是由于示功器的不完善。分析大量示功图得知,振动过程只是在压力急剧升高以后才开始。由显示发动机开动时的一系列连续的波形图可以证明这一点。如果压力增长的最大速度(dp/dτ)_(max)不超过3000公斤/平方厘米·秒(压缩——膨胀循环及供油量少的循环),则示功图的频谱由较低频率的简
According to the operating characteristics of diesel locomotives, the strain indicator consisting of И-10 strain gauge, УТС-12 strain gauge and Н-102 light oscilloscope is used to display the 1ЧН24 / 27 cylinder of the Д-70 diesel engine with turbocharger Working conditions, record the cylinder in the combustion - expansion of the extremely strong pressure vibration. As we all know, the fluctuation of the pressure waveform may be due to the vibration of the gas or the imperfection of the dynamometer. Analysis of a large number of kung-fu chart shows that the vibration process is only after the sharp rise in pressure began. This is evidenced by a series of continuous waveforms showing when the engine is started. If the maximum rate of pressure increase (dp / dτ) _ (max) does not exceed 3000 kg / cm 2 sec (compression-expansion cycles and less fuel supply cycles), the spectrum of the dynamometer is dominated by the lower frequency simple