Haltech F10X - Manual (Page 51)

F10X Manual
51
5.3.3 Zero Throttle Map
The zero throttle map is accessed through the menu structure under the maps menu.
The zero throttle map is used with engines that use Manifold pressure load sensing but cannot
produce a stable manifold pressure signal at idle. The zero throttle map is used when the
throttle position reads 0% and applies a set amount of fuel in place of the fuel quantity
normally extracted for the base fuel map. The map has 16 bars distributed across engine
speed in the range 0rpm to 2000rpm and each bar represents a quantity of fuel measured in
milliseconds.
5.3.4 Full Throttle Map
The full throttle map is accessed through the menu structure under the maps menu.
The full throttle map is used with engines that use Manifold pressure load sensing but cannot
produce a stable manifold pressure signal at full throttle. The full throttle map is used when
the throttle position reads higher than “Full Throttle Threshold” (refer to 4.2.2 Fuel Set-up
Page, p36) and applies a set amount of fuel in which the ecu will inject, regardless of the fuel
quantity normally extracted for the base fuel map. The map has 32 bars distributed across
engine speed in the range 0rpm to 16000rpm and each bar represents a quantity of fuel
measured in milliseconds.
5.3.5 Turbo Waste-gate Maps
The ECU has access to two turbo waste-gate maps that are used to control boost pressure.
The two maps are labelled “1” and “2” which operate identically but whose usage differs. For
information on map usage refer to 12.1 Turbo Waste Gate Control (TWG), p79.
The waste-gate maps are accessed through the menu structure under the maps menu.
When turbo waste-gate control is used, the ECU uses the waste-gate maps to determine the
duty cycle with which to drive a solenoid that is used to bleed pressure from the waste-gate
diaphragm to control the boost pressure. Each map has 32 bars distributed across engine
speed in the range 0rpm to 16000rpm and each bar represents a duty cycle fed to the bleed
valve in the range 5% to 95%.
5.3.6 Torque Converter Control Map
The torque converter control map is accessed through the menu structure under the maps
menu and is used in conjunction with the torque converter control. Refer to 12.4 Torque
Converter Clutch Lockup (TCC), p81
When the torque converter clutch control is used, the ECU uses the torque converter control
map to determine whether the clutch lock-up should be engaged. The map has 24 bars
distributed across throttle position in the range 0% to 70% and each bar represents the road
speed at which the clutch lock-up should be engaged in the range 0km/h to 300km/h.