公开(公告)号：US5160892A

公开(公告)日：1992-11-03

申请号：US593154

申请日：1990-10-05

申请人： Surender K. Makhija ,  Steven J. Sparacino ,  Robert T. Burgess

发明人： Surender K. Makhija ,  Steven J. Sparacino ,  Robert T. Burgess

IPC分类号： F02P17/08

CPC分类号： F02P17/08

摘要： An engine analyzer for an internal combustion engine includes an analog-to-digital (A/D) converter which digitizes an analog input waveform representing, for example, a secondary or primary voltage waveform of the ignition coil of the internal combustion engine. The sampling rate of the analog digital converter is determined by dividing the waveform time period by the desired number of samples. An adjustment factor C is used to provide a buffer period during the sampling period of the waveform. A display for displaying the waveform has a buffer region which corresponds to the buffer period. Thus, a variation in the speed of the engine which causes the engine to slow down and extends the period of the engine waveform does not cause a loss of data collected from the waveform because the buffer period provides a margin of error.

摘要翻译： 用于内燃机的发动机分析器包括将表示例如内燃机的点火线圈的二次或一次电压波形的模拟输入波形数字化的模数（A / D）转换器。 模拟数字转换器的采样率通过将波形时间段除以所需数量的样本来确定。 调整因子C用于在波形的采样周期期间提供缓冲期。 用于显示波形的显示器具有对应于缓冲器周期的缓冲区域。 因此，由于缓冲期间提供了误差，因此发动机的速度变化引起发动机减速并延长发动机波形的周期不会导致从波形收集的数据的损失。