SuperFlow AutoDyn, Руководство оператора, Страница: 141 / 208

Description of the Configuration File
Volume 2, Rev 2 6/28/04
Section 9 - Page 21
Channel 59 - OptRpm C9*60
Channel 59 is used to calculate optical RPM when using the 1200A-2448-
1 optical cable for engine speed calculations. The cable is used in the
channel 11 jack, but the signal appears on the channel 9 frequency
channel. Since the frequency is in hertz, it must be multiplied by 60 to get
pulses per minute instead of pulses per second.
Channel 60 - OilTmp C5T136
Channel 60 is used to calculate the engine oil temperature using our Oil
Dipstick Probe. The voltage from channel 5 is converted using table 136
to produce a temperature value. Fahrenheit or Celsius readings are
determined by the values entered into Interpolation Table 136. This
channel should be deleted for systems equipped with a thermocouple
module to measure temperatures.
Channel 74 - AirInT C1T136
Channel 74 displays the air inlet temperature from the thermistor used for
ambient air temperature measurement. The thermistor is located inside
the humidity probe and should be positioned near the intake air for the
engine. The voltage from channel 1 is converted using table 136 to
produce a temperature value. Fahrenheit or Celsius readings are
determined by the values entered into Interpolation Table 136. The air
temperature data is used to determine power correction factors and air
density.
Channel 75 - DifTmp C71T136
Channel 75 displays the differential temperature from the thermistor
embedded in the rollset differential. The voltage from channel 5 is
converted using table 136 to produce a temperature value. Fahrenheit or
Celsius readings are determined by the values entered into Interpolation
Table 136. The rollset should not be operated if temperatures exceed 200
degrees Fahrenheit.
Channel 100 - WhlPwr C108 + C105 + C126
Channel 100 is used to calculate the measured wheel power delivered to
the dynamometer roll. Channel 126, the eddy current absorber power, is
added to Channel 108, the inertia power due to acceleration, and
Channel 105, the dynamometer parasitic power loss.
Some inertia only
dynamometers use only the inertia power, leading to measurement
errors.
All corrected power and all wheel torque numbers are derived from
this channel.
Channel 101 - SAECor ((459.7+C74)/536.7)^0.5*(29.23/(C76-C118))
k ECE (99/(C76-C118))^1.2*((C74+273)/298)^0.6
Channel 101 is used to calculate the Society of Automotive Engineers
(SAE) or Economic Commission of Europe (ECE) power correction factor
for the engine under test. It combines the ambient air temperature from
Channel 74 and the barometric pressure from Channel 76 with the vapor
pressure of the moisture of the air from Channel 118. The factor corrects
the power to the estimated power at 77
0
Fahrenheit [25
0
C] and 29.23
inches of mercury [99 kPa] air pressure. The SAE [ECE] Correction
Factor is used by Channel 112, SAEPwr [ECEPwr] , to correct the Wheel
Power in channel 100.