SuperFlow AutoDyn, Руководство оператора

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Theory Of Testing
Volume 2, 9/10/04
Section 8 - Page 19
8.7.5 Other Tests
The WinDyn Test Profile Editor allows modification or creation of any kind of test. Here are several
that may provide some utility to the user.
These tests may be stored in an “optional tests” folder instead of the normal test folder. If you do
not have these tests and would like a copy, please contact our Customer Service Department.
8.7.5.1 ProAero.tpf
The Inertia Load test is only available on eddy current equipped dynamometers.
This test is identical to the Inertia.tpf except it allows the operator to add a percentage of load via
the eddy current absorber. This, in essence, simulates a heavier rollset, thus, slowing the rate of
acceleration.
This test prompts the operator for an initial test speed in MPH at which the data acquisition system
will begin recording data. An ending speed in MPH is then requested and is used by the test profile
to terminate recording of data. A load percent is then requested.
The test profile also checks for a negative rate of acceleration which will also terminate recording
of test data, in the event the test is aborted before the upper test speed is achieved.
When the test begins, the eddy current absorber applies the percent of load entered, thus making
the rollset feel “heavier” to the vehicle during the acceleration run. At the end of the test, the eddy
current absorber is engaged to return the vehicle to the starting MPH speed.
Another identical test can then be performed by pressing the “NEW RUN” selection, or the test
may be stopped by pressing the “STOP” selection. When the “STOP” selection is pressed, the
eddy current absorber will engage to bring the vehicle speed to 0 MPH. If you do not wish to
return the vehicle speed to 0 MPH, simply press the big red hand (reset) function on the handheld
to end the test.
Power is calculated from the rate of acceleration of the dyno system inertia mass and from the
dyno system parasitic losses. Power contributed by the load cell is also used, since there is a
constant load applied throughout the test.
Data is automatically saved at the end of each test iteration to a SFD file on the computer disk
drive.
8.7.5.2 TirDia.tpf
The Tire Diameter test can be used to determine the actual tire diameter for channel 84, TirDia, in
the vehicle specifications. Set up the optical tachometer to observe wheel revolutions on the rear
wheel. Accelerate the vehicle to a desired speed and hold the speed constant. Run the test and it
will automatically calculate the correct tire diameter and enter it into channel 84. When the test is
complete, manually save the new tire diameter in the vehicle specification file using the handheld
or WinDyn option.