Haltech E6X Manual DOS Version - Manual (Page 61)

E6X Manual
61
5.3.5.3 Coolant Temperature cranking map
The coolant temperature cranking map is accessed through the menu structure and can be
found under “Ignition Correction Maps” in the maps menu.
The coolant temperature cranking map is used to apply a set ignition angle based on the
coolant temperature measured by the ECU at engine speeds below 380rpm, which are
considered to be cranking speeds. The map has 32 bars distributed across coolant temperature
in the range –40°C to 127°C and each bar represents an ignition angle.
5.3.6 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.
5.3.7 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, p44) and applies a set amount of fuel in place 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.
5.3.8 Injector Phase Map
The injector phase map is accessed through the menu structure under the maps menu.
When sequential injection is used, the ECU uses the injector phase map to determine the “end
of injection” angle. The map has 32 bars distributed across engine speed in the range 0rpm to
16000rpm and each bar represents an angle before top dead centre exhaust in the range
0°BTDC (exhaust) to 120°BTDC (exhaust).
5.3.9 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 13.1 Turbo Waste Gate Control (TWG), p88..
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