11 Commissioning
100 PHLOX II Ignition Control System
11.7 Common Ignition timing offsets
General remark on ignition angles
Ignition angles of all cylinders (Par. 13550-13565) are worked out by the addition of 3
terms:
the common ignition base timing (Par. 3911-3913) ->
11.6 Common
ignition-based timing
the common ignition timing offsets (Par. 3917, Par. 3918) -> This paragraph
the cylinder individual ignition angle offsets (Par. 13450-13515) ->
11.8 Cylinder
individual ignition angle offsets
These angle offsets are internal configured values and external knock retards
Ignition angle [cyl] = common base timing + common timing offsets + cyl individual angle offsets [cyl]
Ignition angles and timings are always given in [° crank] before TDC, so posi-
tive angles are before TDC, negative angles after TDC. The ignition angles are
limited in 2 steps. First the common ignition timing (common base timing +
common timing offsets) will be limited in a range of [-10; 90°] before TDC.
Additionally the final ignition angles (common ignition timing + cyl. Individual
angle offsets) will also be limited in a range of [-10; 90°] before TDC
The common ignition timing offset can be applied in 2 ways: internally by using the igni-
tion timing rotary switch on the PHLOX II housing or externally by using an analog or dig-
ital input. If both methods are used, the applied timing offset will be the addition of the in-
ternal and the external offsets.
The current common ignition timing is displayed as the addition of the common ignition
base timing and the common ignition timing offsets in Par. 3910.
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