According to the basic characteristics of internal combustion engines, crank Angle domain and its frequency domain were chosen, and engine momentary speed fluctuations were divided.
根据往复式内燃机工作的本质特征，选择了与传统时间域及频率域不同的曲轴角度域及频率域，对汽车发动机的瞬时转速波动进行了划分。
A new method of modeling of diesel engines is adopted based on the crank-angle domain.
研究了基于曲轴角度域闭环辨识柴油机模型的建模方法。
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