Haltech E8 - Manual (Page 71)

Haltech E11/E8 Instruction Manual
Analogue Input Options
• Fuel Trim - With the optional trim module attached to an analogue input, the injection times can be
adjusted with the trim module. Typically the trim module is used when firing up engines for the first
time to make quick adjustments to fuel. The trim can be setup for Coarse (
± 50%), Medium ( ± 25%)
and Fine ( ± 12.5%) adjustment. Trims can also be dash mounted for changes to mixtures on the fly
whilst driving if desired.
• Ignition Trim - With the optional trim module attached to an analogue input, the ignition advance
can be adjusted with the trim module. Typically, ignition timing is only altered when tuning to allow
for rapid changes to ignition advance. The trim can be setup for Coarse (
± 12.5 ° ), Medium ( ± 10 ° )
and Fine ( ± 5 ° ).
• Turbo Wastegate Trim - With the optional trim module attached to an analogue input, the
wastegate duty cycle can be adjusted with the trim module. With the trim set to minimum, the boost
level is restored to standard with the boost solenoid de-activated. As the trim is increased to
maximum, the programmed boost from the maps is used to control boost.
• External Baro – Allows an external barometric pressure sensor (most commonly this is a 1 bar
MAP sensor) to be added to the ECU, this is rarely used as the ECU has a barometric pressure
sensor built in also.
• Wideband O2 Input - With the 5V output from a wide band A/F meter attached to this input, the A/
F ratios can be viewed and data logged against the other engine parameters to aid in tuning and
verification of the maps.
• Manual Idle - With the optional trim module attached to this analogue input, the idle control output
can be controlled by this trim. With the trim set to minimum, the stepper motor will position itself
according to the position described by Min Stepper Open Position in the idle control panel. The
maximum position will be the minimum position plus the Stepper Motor Range.
• Rotary Oil Metering Feedback - This output is used exclusively for rotary engines that have an
oil-metering pump for lubrication of the rotor. The oil-metering pump has a position sensor that is
connected to this analogue input for feedback on its position. The Feedback Min must be set with
the minimum raw count from the analogue input when the stepper motor is in the most closed
position. The Feedback Max value must be set with the largest raw count value from the analogue
input when the stepper motor is in the most open position.
• External MAP Sensor – This input enables an additional MAP sensor to be added to the system
for comparison to the MAP sensor used for measuring load. This input is most commonly used in
applications where pressure drop across a device is being datalogged. An example where this
input is used is measuring the pressure drop across an intercooler, where the MAP sensor used to
determine engine load is compared to an additional MAP sensor setup as the “external MAP
sensor” and plumbed before the intercooler. The difference between the two readings is the
pressure drop in the system. Similar methods can be used to determine throttle body efficiencies
etc.
Copyright © Haltech 2008 Page: 71