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Page 27 of 54
o
RPM signal
– RPM signal source. RPM detection threshold in Volts. Set the
detection threshold to a value ensuring proper revolutions reading from the
controller. E.g. for impulses originating in a petrol engine usually equal app. 5 [V],
set the detection threshold to app. 2,5 [V]. For impulses originating from the
ignition coil, set the threshold to app. 7 [V].
o
Number of pulses per rotation –
defining the number of signal pulses from the
camshaft position sensor per engine rotation.
o
Engine code
– factory engine code
(selected in autocalibration).
•
Calibration parameters:
o
Operational pressure
– gas pressure value at which the controller was calibrated.
Manual modification of the operating pressure is possible, yet each modification
requires correction of the multiplier map.
o
Minimum pressure
– gas pressure value, below which the controller switches to
petrol.
o
Gas temp.
– gas temperature at which the controller was calibrated.
Manual
modification of the temperature value is possible, yet each modification requires
correction of the multiplier map
.
•
Switch-over to gas:
o
Fuel type
– the type of fuel used for conversion purposes (LPG or CNG)
o
Switch-over threshold
– engine rpm threshold value required for the controller to
switch to LPG
o
Intermediate phase –
controls the rate of switching individual cylinders to LPG
fueling (time when LPG and petrol are supplied simultaneously). Modification
recommended only when problems with smooth switching occur.
−
Very fast
–
cylinder switching occurs almost instantaneously.
−
Fast, normal, slow
–
steps for non-linear adjustment between “Very fast” and
“Very slow” values.
−
Very slow
–
the phase with LPG/petrol feeding overlap through 10 cylinder
working cycles.
o
Switch-over time
– time after starting the engine, when the controller can switch to
LPG
o
Reducer filling time
– the time between activation of the LPG/CNG solenoid valve
and activation of the gas injectors
o
Switch-over temp.
– reducer temperature required for the controller to switch to
LPG
o
Cylinder switch-over
– time elapsing between activation of subsequent gas injectors
o
Hot start
– if checked, warm engine may be started directly from LPG. Check that
option also in vehicles equipped with the Start/Stop function, e.g. Mazda. The
option is used if the engine is started with the reducer temperature equal to or
higher than 65°C.
•
Petrol switch-over:
o
Min gas RPM
– engine rpm threshold value, below which the controller switches to
petrol
o
Max gas RPM
– engine rpm threshold value, above which the controller switches to
petrol