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Analysing Test Results (cont.)-
The percentage difference between a reference trace and the remaining traces can be shown graphically, for all data.
Instantly see where each modification either improves or degrades performance compared to other runs. Great tool!
Lambda / AFR deviation is shown in a special Window that allows you to set a target value, it shows you where and by
how much the real test results varied (essential for quick mixture tuning). Obviously an AFR meter must be connected!
Select any RPM/speed points and the time between them is shown for all Runs (up to 10), clearly reveals ‘real world’
acceleration improvements after modifications. Best performing Runs between all points are highlighted.
Full data table display of ‘point by point’ Power, Torque, RPM and Speed are produced for detailed study and can be
exported directly into Microsoft Excel (with field headings included) or a text file (comma delimited ASCII, CSV.) can be
generated, even the main graph view can be exported as a bitmap image (‘.bmp’) for further analysis and file sharing.
The relationship between distance traveled, time elapsed, Speed and RPM can be studied in a graphical analysis
screen.
XY graph, choose any data to plot against another and display values at the cursor.
Math’s ‘Expressions’ (formula) can be applied to any existing data to generate an additional 2 data channels. A powerful
tool is provided to easily write, test and apply your concepts.
Click on the Run of interest to show all the data that relates to it. The test conditions, max readings, set up details or any
of your personal notes that are saved along with each run can all be reviewed.
Full manual ‘zoom’ available on Power, Torque and RPM displays to display selected graph regions of interest.
Runs can be ‘trimmed’, the lower and upper speed section of graphs can removed if visually required (e.g. if tests start
and finish RPM were inappropriately set) and the Run re-saved.
User selectable ‘Trace Shift’, the last 10 trace sets are always displayed (each new test trace ‘shifts’ the oldest one out
of selection) - great when performing comparisons.
‘Auto Load’ your graph after a Run – can be selected to automatically switch to the graph display after each test Run or
you can opt to do as many Runs as you like in quick succession and analyse as a graph later. A brief test summary is
also immediately available after each test Run is completed.
Onscreen graph legend to rapidly identify Run trace set colors and filenames and a run summary is available to give the
key data for all the selected runs in one concise table.
Data corrected for weather conditions with world standards (SAEJ607, SAEJ1349, DIN70020 or uncorrected). The
environmental conditions and resultant correction factor are stored with each Run. Data can be manually entered or
‘Weather Watch’, automatic updating weather station is available as an option (USB to PC).
Data Acquisition-
Data acquisition of 5 analogue input voltages is incorporated (‘common’ ground). This allows the monitoring of variables
such as air fuel ratio, exhaust temperature etc.
Inputs can be 0-5V or 0-15V (each channel has a range selection switch)
Resistive sensors, such as standard automotive temperature sensors, can be easily connected as each channel has a
selection switch that enables an internal ‘pull up’ resistor (just connect the sensors 2 wires directly to DYNertia3!).
A data logging function is provided allowing the 5 input channels (plus the digital RPM input) to be logged to the PC. The
logging rate can be set and the data is saved (with field headings included) as a text file (.CSV) for later analysis in
Microsoft Excel etc.
Input data can be viewed separately (can even be displayed on separate screen if dual monitors used) or is available
whilst performing testing. Minimum and maximum alarms can be set to alert if sensors detect anything outside an
acceptable level (lean mixtures, engine temperature overheat or oil pressure loss as examples).
The input channels are fully scalable, even for non-linear sensors. Many sensor choices are already pre-calibrated and
DYNertia3 software doesn't just display the input voltage measured, a table for each input allows it to be calibrated and
displayed in any units you choose (eg Lambda, air/fuel ratio, degrees, PSI etc).
For configuring non-linear sensors, such as automotive style temperature sensors, there is a tool provided that just
requires 3 test points to be entered and it creates a full calibration table.
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