计算分析了进排气门实际关闭相位，并根据低压示功图中气门落座冲击引起的干扰信号间接确定发动机运转时的实际关闭相位。
The actual valve closing phases have been calculated, analyzed and determined in accordance with the interference signals caused by valve seating impulse in the low pressure indicator diagram.
通过实测汽油机示功图对缸内燃烧过程的实际情况进行分析，并借助于缸内过程分析模型判断各种因素对性能的影响，从而指出性能改进的方向。
Through measuring the indicator diagram of the combustion process and with the help of an analysis model, factors affecting engine performance are isolated in order to better performance.
本文提出了利用抽油井实测功率曲线计算示功图的方法，并将其应用于实际。
In this paper, a method is proposed to determine surface dynamometer CARDS by actual motor power curves and which has been used in the field.
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