Haltech E6S - Manual (Page 101)

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Channel 3 IGN OUT
Channel 4 Aux Out 1
Channel 5 Aux Out 2
Channel 1 INJ1/INJ2
B.3 Sequential Injection
Sequential injection allows fuel to be delivered to the engine at a time that produces best
combustion. Since this time is different for each cylinder, sequential systems inject fuel at
different engine angles for each cylinder. The Sequential Injection Mode of the E6S will
control up to four separate fuel channels. This provides full sequential for engines up to 4
cylinders, and semi-sequential for 6, 8 and 12 cylinders engines.
B.3.1 Sequential Features on the E6S
Injector Phasing
The timing (or phasing) of these injections is set via the Injector Phasing Map. This Map sets
the angle of the End of Injection, in degrees BTDC exhaust (not compression), against the
engine speed. This allows the injection to be completed before the inlet valve opens. The E6S
then times the start of injection, based on the trigger, so that the injection is completed by the
specified engine angle. If the E6S computes that there is insufficient time to complete
injection before the specified End of Injection time, then injection will continue past this time.
Injector Trims
With multiple injector channels, it is possible to trim the fuel injection time to each channel.
The E6S has the ability to adjust each channel by ± 12.5%. This is meant primarily for the
‘equalization’ of flow rates between injectors with marginally different flow rates. These trims
are accessed through the Fuel Maps and Setup Menu.
B.3.2 Sequential Outputs
The E6S can run full sequential on an engine with up to four cylinders. When the Ign / By is
set to 1 in the Fuel Setup, injection will occur once per engine cycle (every second revolution)
for each channel. The output channels used and the order of injection are :
Channel 1 INJ1/INJ2
Channel 2 INJ3/INJ4
Channel 5 Aux Out 2
Channel 4 Aux Out 1