October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Sensor, Crankshaft Position: Operation
- The crankshaft position and engine speed are detected through a (hall effect) signal. The distance between the crankshaft position sensor and the gaps of the tone wheel is fixed by the installation position.
- When the crankshaft rotates, an alternating voltage is generated in the crankshaft position sensor by the gaps of the tone wheel located behind the flexplate.
- In this case, the metal portion of the tone wheel generates a positive voltage pulse and the gap in the tone wheel a negative voltage pulse. The distance from the positive to the negative voltage peak equals the length of the gap.