Calculation Of Corrected Power - Mitsubishi S6S-Y3T61HF 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( ):283K(10°C)[50°F]
Dry atmospheric pressure(
=( )
Range of correction equation use
The range of correction factor(
1.1.
0.9
Calculation of correction factor(
Natural aspiration engine and engine with
mechanically driven air charger
99
=( )·(
298
Turbocharged engine without air cooler
or with air-to-air cooler
99
0.7
=( ) ·(
Turbocharged engine with air-to-liquid
cooler
99
0.7
=( ) ·(
13-10
T
):80kPa(600mmHg)
:Atmospheric factor
)is as follows:
)
0.7
)
1.2
)
298
0.7
)
298
) × Measured brake power
313K(40°C )[104°F]
110kPa(825mmHg)
:Engine factor
Calculation of engine factor(
=0.036 -1.14
:Corrected fuel supply volume
=
=
(Stroke volume ) × (Engine speed min
= 120000(4-cycle engine)
:Ratio between pressure at turbocharger or
air cooler outlet and atmospheric pressure
( =1 for natural aspiration engine)
· Applicable range of engine factor(
37.2
· 37.2mg/(l -cycle):
· 65mg/( -cycle)
)
( ) × (Fuel flow rate g/s)
)
65mg/( -cycle)
=0.2(constant)
: =1.2(constant)
-1
)