FT500 SFI / FT500LITE SFI
65
Other functions
This control uses a target RPM for idle speed and works advancing
and retarding the engine timing to keep the engine running near the
specified RPM.
As the FT500 / FT500LITE idle speed control has an advanced
integration with the idle speed by timing control, this one stays always
enabled when any other kind of idle speed control is selected. By doing
this, the idle speed actuator is always kept in a position where the idle
speed by timing control can set the timing away from the maximum
and minimum timing positions
Maximum and minimum timing limits:
these values are the limits
for advance and retard when ECU is controlling the idle by timing.
Actuator position
This parameter will be only available when the position on idle is set
as fixed. This table relates the actuator position in function of the
engine temperature.
Idle speed control settings 5/7
95 °C
16,0
%
Post-start position
This parameter will be only available when the position on idle is set
as fixed. The table controls the actuator opening after the engine start.
The table is an actuator position vs time. After the time slip, the position
is defined by the actuator position table based on engine temperature.
Idle speed control settings 6/7
2 s
+2,5
%
RPM for idle speed
This table tells the ECU the target RPM the idle control will assume,
according to engine temperature. On intermediate temperature ranges,
target RPM is automatically interpolated.
When “Position on idle” is set to “fixed” this table represents the
actuator position X engine temperature.
Idle speed control settings 5/7
95 °C
1000
RPM
Post-Start position
This parameter is a RPM increase (or % of increase in the actuator
position for fixed idle position). The table shows the actuator position
according to time post engine start.
Idle speed control settings 6/7
2 s
+500
RPM
Compesation by load:
used to compensate actuator position when
suddenly loads (like AC or fan) are added to engine and can affect
idle. It is possible to set an target RPM compensation when the AC is
on and fuel/actuator opening compensation for AC and fans.
Disab.
Enab.
Thermatic Fan 2
compensation
10,5
%
Disab.
Enab.
Thermatic Fan 1
compensation
10,5
%
Idle speed control settings 9/9