KMS Fuel/FA23 manual
Version 3.01
14
3.2.4.1.8
Correction-table (only for older Fuel systems)
This menu offers the possibility to calibrate a sensor
to which corrections can be made. Normally, a water
temperature sensor is used for this purpose, to
enable cold start enrichment to be set. Cold start
enrichment is required at low engine temperatures,
because the fuel then condenses against the cold
cylinder walls and is forced out of the exhaust
without having been burned. As a result, the mix
becomes too poor, so that the engine will hesitate.
To compensate for the loss of fuel at low engine
temperatures, more fuel will have to be injected.
When a 2-pole Bosch water temperature sensor is
used, the only thing to do is click the box next to the
text 'NTC-temp. sensor'. As this sensor is pre-
programmed in the software it does not have to be
calibrated. When another sensor is used, the range
can be set manually.
This menu also offers the possibility to make a
correction to the air temperature and/or the battery
voltage. The air temperature correction is a fixed table and cannot be changed with the PC software.
This air temperature correction can only be made if an NTC temperature sensor is used. For the
correct type of sensor, see 6.5 (sensor connections).
The battery voltage correction is used to make corrections for the opening loss time of an injector.
This opening loss time is dependent on the battery voltage and may vary from 1.8 milliseconds at 8
volts to 0.4 milliseconds at 16 volts. For instance, 0.68 milliseconds will be added to the duration of
injection when the battery voltage is 12.6 volts. The table can be used for injectors with a resistance of
12 to 15 ohms.
If the air temperature and battery voltage correction functions are not activated, this will be shown in
the communication bar. The two relevant readings will then turn grey.
3.2.4.1.9
Remarks
This is free space for making notes, for instance; engine
specifications.
