... engine speed dial；发动机转速度旋钮[表盘] engine speed fluctuation；发动机速度波动 engine speed frequency signal；发动机速度频率信号 ...
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The experimental results of upwards and downwards switching processes showed that the fluctuation range of engine speed increased as the load increased in the valve switching process.
大小涡轮相继增压系统上、下行切换试验结果表明，阀门切换过程中发动机转速波动范围随着负荷的升高而增大。
Based on the method of engine crank speed fluctuation, the 58X speed sensor signal is analyzed by the input capture.
基于曲轴转速波动法，通过对发动机58齿转速信号进行分析，计算发动机每缸失火粗暴度来判断是否失火。
However, when the load is same, the fluctuation ratio is independent to the mean engine speed.
负荷相同时，转速波动率的大小与转速没有单调变化关系。
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