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The “Auto.” button enables automatic assignment of injectors to a specific bank. However, if the
procedure fails or it is assumed that the results of previous automatic assignment are incorrect,
manual identification is required. Start the engine and wait to establish communication between the
controller and the OBD interface. The engine should work on idle speed without active adaptation.
Reset the value of correction to zero for all gas injectors. Save the STFT and LTFT correction values
for Bank 1 and Bank 2. Next, perform the following procedure, starting from the 1st gas injector:
1.
Change the trim value for gas injector from 0 to 25 in the “Gas injectors settings”
window.
2. Observe which of the 2 banks shows changing STFT/LTFT trims to lower values.
3. Having identified the bank with changing trims, assign the respective injector to the
bank.
4. Set the injector correction value to 0. After this, STFT and LTFT trims should restore
the initial values (observed before stage 1).
Repeat the described procedure (steps 1 to 4) for the remaining gas injectors in the system.
After the assignment of gas injectors to the bank,
activate autoadaptation
, if necessary, set the
initial gas correction values.
In control systems with two banks, failure to perform the above-mentioned
procedure will result in incorrect autoadaptation, which may lead to engine
damage.
In engines with 1 bank in the control system, it is not required to perform the
described procedure, as all gas injectors are assigned to bank 1 on default.
2.23. Autoadaptacion
STAG-4 QBOX/NEXT PLUS and STAG-300 QMAX PLUS controllers are provided with
a mechanism that corrects gas dosing in real time, during driving. Activation, selection of
autoadaptation mode and configuration is performed in the Autoadaptation window accessed through
the Window menu. There are 2 modes available:
ISA3
– The controller adjusts the gas dose based on the reference map acquired earlier
for petrol injection pulses.
OBD
– Correction of gas dosage is based on the readings of parameters from the on-
board diagnostic interface compliant with the OBD2/EOBD standard.