autogaz AC STAG-200, Руководство пользователя

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3.6. Multiplier map calibration – 3D map (for STAG ‐ 300 Plus, STAG ‐ 300 Premium only)
Having performed auto ‐ calibration and having set the multiplier map while driving, additional
calibration of the multiplier depending on the engine revolutions can be performed using the 3D map
(see 2.13). If there are any differences in injection times for a given range of the petrol injection time
and the engine revolutions after switching from petrol to LPG, such differences must be calibrated by
means of enriching/weakening using the 3D map. The rule is the same as in the case of setting the
multiplier, i.e. if the injection time value is bigger after switching from petrol to LPG, it means that the
mixture is too lean at a given point within the map (the petrol computer lengthens the petrol injection
time). Thus, the mixture must be enriched for this point using the 3D map. In a reverse situation, i.e.
when the petrol injection time is shorter after switching from petrol to LPG, the mixture must be
weakened.
3.7. LPG temperature correction (for STAG ‐ 300 Plus, STAG ‐ 300 Premium only)
If the petrol injection time changes when the LPG temperature is changed in the LPG mode, the LPG
temperature calibration must be corrected. The correction may be made by means of the “LPG
temperature calibration map” (see 2.16). However, it must be remembered that this operation may
be performed if the auto ‐ calibration and the multiplier setting while driving have been carried out
correctly. In order to make the correction in a proper way, the car must be started with a cold engine.
Then, beginning with the temperature of switching to LPG, the petrol injection time must be checked
and after switching to LPG the petrol injection time should be compared. If the petrol injection time
value is bigger after switching to LPG, the positive correction must be made for this LPG temperature
value (the LPG temperature calibration map must be brought up). If the petrol injection time value is
lower after switching to LPG, the calibration map for a given LPG temperature value must be brought
down. The calibration map must be set in such a way as to ensure that the petrol injection time
remains the same after switching from petrol to LPG. In order to set the LPG temperature calibration
map correctly, the procedure described above must be repeated for the full range of LPG temperature
values in 5 [°C] steps.