Calculation Of Corrected Power - Mitsubishi Heavy Industries SL Series Service Manual

ADJUSTMENT AND OPERATION
3.4.2

Calculation of corrected power

Multiply the measured brake power or torque by the
calculated diesel engine correction factor to obtain a
corrected value.
If the applicable range of the correction formula is
exceeded, indicate the corrected values and record the test
conditions on the test record.
Colculation output = Correction factor
Atmospheric conditions during test
Temperature(T ):
Dry atmospheric pressure(P
f m
=( f a ) f a :Atmospheric factor
c
Range of correction equation use
0.9 1.1.
c
Calculation of correction factor(
Natural aspiration engine and engine with
mechanically driven air charger
T
99
f a
P 298
d
Turbocharged engine without air cooler
or with air-to-air cooler
T
99
f a
P 298
d
Turbocharged engine with air-to-liquid
cooler
T
99
f a
P 298
d
13-10
Measured brake power
c
T
P
):
d d
f
Engine factor
m
c
f a
)
Calculation of engine factor f
f
0.036q 1.14
m c
q
c
q
q
c
r
z
q =
l
z=120000 4
r
r=1
Applicable range of engine factor f
q l
37.2 65mg
c
q l
37.2mg
c
f
l q
65mg
c m
m
g/s
-1
min
m
f
m