Mitsubishi Heavy Industries S3L, Service Manual

Page: 178 / 200

ADJUSTMENT AND OPERATION
13-10
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
ǩ
c
˜ Measured brake power
࡮ Atmospheric conditions during test
Temperature(
T
):
-q % =q (?҇
T
҇-q % =q (?
Dry atmospheric pressure(
P
d
): M2COO*I҇
P
d
҇M2COO*I
ǩ
c
=(
f
a )
f m
ޓ
f
a : Atmospheric factor ޓ
f
m
Engine factor
࡮ Range of correction equation use
ޓ6JGTCPIGQHEQTTGEVKQPHCEVQT
ǩ
c
KUCUHQNNQYU
0.9
҇
ǩ
c
҇
1.1.
࡮ Natural aspiration engine and engine with
mechanically driven air charger
࡮
Turbocharged engine without air cooler
or with air-to-air cooler
࡮
Turbocharged engine with air-to-liquid
cooler
f
a
㨯
99
P
d
T
298
f
a 㨯
99
P
d
T
298
f
a
㨯
99
P
d
T
298
Calculation of correction factor(
f
a
)
Calculation of engine factor
f
m
f
m
0.036
q
c
㧙
1.14
q
c
%QTTGEVGFHWGNUWRRN[XQNWOG
q
c
q
r
q =
z
˜(WGNHNQYTCVG
g/s
5VTQMGXQNWOG
l
˜'PIKPGURGGF min
-1
z=
120000 4
E[ENGGPIKPG
r
4CVKQDGVYGGPRTGUUWTGCVVWTDQEJCTIGTQT
CKTEQQNGTQWVNGVCPFCVOQURJGTKERTGUUWTG
ޓ
r=
1
HQTPCVWTCNCURKTCVKQPGPIKPG
࡮ Applicable range of engine factor
f
m
ޓ 37.2 ҇
q
c
҇ 65mg
l
E[ENG
㨯
q
c
҇
37.2mg
l
E[ENG㧦
f
m
EQPUVCPV
㨯
65mg
l
E[ENG҇
q
c
㧦
f
m
EQPUVCPV