MoTeC Knock OKM - Manual (Page 20)

20 Configuration
Note: Requires the Driver Warning Alarm function to be configured on
an auxiliary output.
Note:
The knock warning is included in Status Group 3.
Unit: Percentage (%)
Retard Gain (Instantaneous Term)
Defines the amount of retard applied for each percent over the Knock
Target Threshold (value from Knock Table).
Unit: Degrees/Percent
e.g.: Retard gain = 0.5 and knock= 20% over the Knock Target
Threshold would result in 10 degrees ignition retard
Advance Rate
Rate at which ignition retard is advanced back to normal.
Unit: Degrees/Second
e.g.: Advance rate = 2 would result in the ignition to advance back at
a rate of 2 degrees per second.
Retard Limit
Maximum amount of retard from the current ignition timing (from
Ignition Table)
Unit: Degrees
e.g.: Retard Limit = 10 and current ignition timing = 25 degrees BTDC
then the Instantaneous term trim aspect of the Knock Control
Function can retard to 15 degrees BTDC.
Retard Rate Long term
Amount of long term retard applied per second for each degree of
instantaneous term trim retard applied.
Unit: Degrees/Second/Degree
e.g.: Retard Rate Long Term = 0.200 and currently active
Instantaneous Term trim = 8 degrees, then 1.6 degrees/second long
term trim is also applied.
Advance Rate Long Term
Long term rate at which ignition is advanced back to normal.
Unit: Degrees/Second
e.g.: Advance Rate Long Term = 0.050 would result in the ignition to
advance back at a rate of 1 degree in 20 seconds.
Retard Limit Long Term
Maximum amount of long term retard the Knock Control function can
remove from the current ignition timing (from Ignition Table)