SuperFlow AutoDyn, Руководство оператора

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AutoDyn
Operators Manual
Section 9 - Page 18
CH9 AutoDyn Description of the Config File.fm
Channel 40 - FwRLos HP = (C10T133)*C119/0.0763
kW = ((C10T133)*C119/1.293)*0.746
Used only on AWD
Channel 40 is used to calculate the parasitic losses inherent in the front
rollset of the dynamometer due to aerodynamic drag. This channel uses
the roll speed, and then refers to interpolation table 133. These losses are
measured at the SuperFlow factory by motoring the dynamometer at all
speeds up to 200 miles per hour
[320 km/h] and recording the loss
information. Channel C119 adjusts the roll aerodynamic losses for air
density. The value 0.0763 is a constant relating to standard air density.
Channel 40 is combined with channels 39 and 41 in channel 38 to
calculate front wheel power.
Channel 41 - FwAbPw HP = C3*C123/5252.113
kW = C3*C123/9549
Used only on AWD
Channel 41 is used to calculate the power absorbed by the strain gage
attached to the front differential. It uses the power absorber torque from
Channel 3 times the roll RPM from Channel 123, and divides by a
constant to determine the power absorbed. This value is combined with
channels 39 and 40 in channel 38 to calculate front wheel power. When
the eddy current absorber is loaded during a test, this channel will
contribute a larger portion to the front wheel power calculation in channel
38.
Channel 42 - RwRlPw C43+C44+C37
Used only on AWD
Channel 42 is used to calculate the measured wheel power delivered to
the rear dynamometer roll. Channel 37, the eddy current absorber power,
is added to Channel 43, the inertia power due to acceleration, and
Channel 44, the dynamometer parasitic power loss.
Some inertia only
dynamometers use only the inertia power, leading to measurement
errors.
This channel and channel 38 are added together to derive total
wheel power.
Channel 43 - RwInPw HP = (2102+C91)*C122*C10/375
kW = ((1651*0.454)+C91)*9.91*C122*C10/3600
Used only on AWD
Channel 43 is used to calculate the rear rollset inertia power during a
transient test. When the vehicle is accelerating or decelerating, additional
power is developed by the engine to accelerate the inertia of the roll, the
absorber, and the rotating components of the vehicle. Inertia power is
calculated from the rear rollset inertia of the dynamometer (2102 lbs), the
rotating inertia of the rear wheels of the vehicle (channel 91), the rate of
acceleration in G's from Channel 122, and the actual road speed from
Channel 10. The inertia power is used by Channel 42 to determine the
total rear wheel power. The default value of 2102 is the inertia value for a
typical rear rollset. Individual customer systems will require their specific
rollset value to be entered into this channel. This will be done during initial
testing at SuperFlow and can be verified by the customer calibration data
sheet shipped with the system. The value is equivalent vehicle mass in
pounds. This value should match the calibration sheet shipped with your
system.
DO NOT CHANGE THIS VALUE. Doing so will severely alter all