Marine Installation Manual
2021-08
9-5
9 Appendix
9.3 SI dimensions for internal combustion engines
X72DF
9.3
SI dimensions for internal combustion engines
Table 9
-
3
SI dimensions
Symbol
Definition
SI-Units
Other units
a
Acceleration
m/s
2
A
Area
m
2
, cm
2
, mm
2
BSFC
Brake specific fuel consumption
kg/J, kg/(kWh), g/(kWh)
c
Specific heat capacity
J/(kgK)
C, S
Heat capacity, entropy
J/K
e
Net calorific value
J/kg, J/m
3
E
Modulus of elasticity
N/m
2
, N/mm
2
F
Force
N, MN, kN
f, v
Frequency
Hz, 1/s
I
Current
A
I, J
Moment of inertia (radius)
kgm
2
l, L
Length
m, cm, mm
l
a
, l
p
Second moment of area
m
4
K
Coefficient of heat transfer
W/(m
2
K)
L
Angular momentum
Nsm
L
(A)TOT
Total A noise pressure level
dB
L
(LIN)TOT
Total LIN noise pressure level
dB
L
OKT
Average spatial noise level over
octave band
dB
m
Mass
t, kg, g
M, T
Torque moment of force
Nm
N, n
Rotational frequency
1/min, 1/s
rpm
p
Momentum
Nm
p
Pressure
N/m
2
, bar, mbar, kPa
1bar = 100kPa
100mmWG = 1kPa
P
Power
W, kW, MW
q
m
Mass flow rate
kg/s
q
v
Volume flow rate
m
3
/s
t
Time
s, min, h, d
T,
Θ
, t,
θ
Temperature
K, °C
U
Voltage
V
V
Volume
m
3
, dm
3
, l, cm
3
v, c, w, u
Velocity
m/s, km/h
Kn
