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The QuickTune feature is available for
the V44 and V88 model ECU's.
The QuickTune will tune the engine with no input from
the operator. The closed loop air fuel ratio table is
used as the target air fuel ratio table for the QuickTune
software. This table is setup with the required air
fuel ratios at various RPM and Load points.
An exhaust gas analyzer or any other analyzer that
provides a 0 to 5volt "corrected" output,
is connected to any of the Analog inputs, this is used
as the actual air fuel ratio input. As the engine is
run through its various RPM and Load points the software
will adjust the volumetric efficiency numbers in the
main fuel table to achieve the target air fuel ratio.
At no time do you need to touch the keyboard on the
Laptop.
After the tuning is complete the analyzer and 02 sensor
is no longer needed. At any time after tuning is finished
the values in the target closed loop table can be changed,
and the engine will automatically run the new air fuel
ratio, providing you do not make a change to the volumetric
efficiency of the engine, e.g. fit a different camshaft,
modify cylinder head etc...
If the engine is modified so the volumetric efficiency
changes, then the analyzer and QuickTune software feature
will be required again to re-tune the engine.
The QuickTune software is much faster then a good operator.
It is not possible to manually tune as quick as the
QuickTune . A typical engine will take less than 20
minutes to fully map on an engine dyno.
The accuracy of the QuickTune can be setup in the software
from 0.5% to 5.0% accuracy. The default value is 2%
accuracy, this is generally a lot more accuracy then
most tuners manual tune engines.
Features TuneAhead™ which tunes cells around the site
being tuned. This speed up tuning when surrounding cells
have values that are not close.
You cannot directly connect a
02 sensor to the ECU to QuickTune.
Documentation on the setup and
using the QuickTune feature. QuickTune.pdf
Overview
ViPEC QuickTune software provides rapid hands-free tuning
of Engine Air/Fuel mixtures. This automated operation
frees the engine tuner, allowing total concentration
on safe engine/dyno operation. On road tuning of motor
vehicles is even possible.
This software uses a complex combination of math, including
statistics, trigonometry and fuzzy logic to intelligently
adjust the fuel delivery tables. Initial tuning is rapid
usually occurring within 1 second. High precision can
be achieved by allowing the QuickTune to operate for
an extended time at each engine operating point. The
operator has control over the balance between tuning
speed and accuracy. Accuracy is ultimately limited by
the accuracy of the attached Air/Fuel ratio measurement
equipment.
The program provides visual indication of the tune
status. Automatic and manual storage of tune status
allows the user to monitor the tuning progress even
if undertaken in several sessions. Tuning usually proceeds
2 to 5 times faster than possible by manual means. Fuel
savings of as much at 90% have been reported. The considerable
savings in engine life are obvious.
This program also has elaborate diagnostics facilities
and allows simultaneous operation of the ECU internal
data logger and external P.C data logging.
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