324 Properties of the Modules
imc CANSAS Users Manual - Doc. Version 1.9 - 05.12.2014© 2014 imc Meßsysteme GmbH
Crankshaft gear pattern:
For all sensors with missing teeth, the gear pattern is selected here.
2 adjacent teeth of 60 missing
2 adjacent teeth of 36 missing
1 of 36 teeth is filled in to make one wide tooth.
Pulse count per crankshaft revolution
For all sensors with a zero-output, you can specify how many pulses the sensor returns per crankshaft
revolution. The amount of markings or subdivisions of the sensor. May lie between 2 and 3600.
Minimum, maximum pulse width
For the crankshaft sensor, the allowed pulse width is specified.
In general, 0 (zero) is specified. The zero indicates that no check is to take place. For instance, if the
maximum is zero, it means that there is no maximum pulse width. The pulse may be as wide as
desired. If the minimum is zero it means that the pulse may be as narrow as it can.
When working with values other than zero, in other words, when there is to be verification, note that
a pulse will be ignored if it is too narrow or too wide. This can in turn only happen if at the moment
the signal edge is recognized the pulse width is already available to the device. If one has a positive
pulse, then the negative edge must be the edge set for the crankshaft signal. The (short) pulse begins
with the positive edge and ends with the negative one. At its end, its duration is known. If the
duration is to short or too long, the edge is ignored. If the positive edge is set where there is a positive
pulse, then the time between pulses is measured and used as the determining criterion. The positive
edge may thus only be used with negative pulses.
Number of monitored cylinders
If no monitoring of individual cylinders is desired, a zero is entered (default value). The camshaft
sensor is ignored. However, the module still determines the ignition angle.
If Monitoring of selected cylinders is desired, then the amount of cylinders is entered in this box. One
to four cylinders are possible. The camshaft signal must be connected to the imc CANSAS-IGN's CAM
terminal. The signal returns one or more pulses per camshaft revolution. Based on the camshaft
position, it is possible to assign each ignition impulse. The condition for this is that the ignition signals
include all of the cylinders' ignition impulses. For each monitored cylinder, the ignition angle's mean
value, minimum and maximum values are determined. These results are outputted as CAN messages.
The values of the cylinders monitored do not appear on the Display.
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