| 摘要 |
<p>The invention relates to a system for determining an angular speed of a flywheel of an internal combustion engine. At least two measurement points are defined on the flywheel and a measurement unit is configured to receive information from the sensor on detections, when each of the at least two measurement point arrives in detection space of the sensor and points of time of the detections are determined. Furthermore, a time difference of a first detection of a measurement point and a sequential detection of the same measurement point for each of the at least two measurement points and the angular speed of the flywheel in relation to each of the at least two measurement points is calculated at least party by means of the time difference. In this way, speed values are always determined on the basis of a full rotation, so that errors caused by a different or irregular angular spacing of the markers are avoided. The invention also relates to a method for determining the angular speed.</p> |
