曲轴的点火时间是在曲轴运转最快的速度下开始点火的.

The cranking ignition timing table is used up to this speed on starts.

点火时间正是通过映射RPM范围的确切时间，以便获得最佳的性能要求是在每个转速和负载范围内适用。

Ignition timing is precisely mapped through the RPM range so that the exact timing required to obtain optimum performance is applied in every RPM and load range.