Sensor wheel adaptation

When the segment times are measured disturbances occur which are eliminated by means of adaptation, thereby permitting more precise detection of misfiring.

The following disturbances may occur:

• Mechanical tolerance of tooth flanks
• Damage to tooth flanks
• Centre point and center of rotation of flywheel are not identical
• Torsional vibrations of the crankshaft
• Different charge/carburetion from cylinder to cylinder.

Adaptation can take place in three load and eight speed ranges, i.e. in a total of 24 different ranges. Adaptation is performed in both fuel off and fuel on modes.

The dominant range of adaptation is fuel off. Adaptation must take place in this range first; only then can further adaptation procedures be performed.

Other thresholds are used, depending upon learning progress.

See also: (Actual values ).