Marine Installation Manual
2021-08
4-77
4 Ancillary Systems
4.6 Fuel oil system
X72DF
Fuel oil feed pump
To correctly deliver the fuel oil to the engine, the fuel oil service tank arrange
-
ment must provide the required inlet pressure for the fuel oil feed pump, as de
-
fined by the supplier.
Fuel oil heat exchanger
The standard proposal for MDO and MGO (compliant to ISO 8217:2017) is a
heat exchanger without temperature or flow control. The viscosity of the MDO
and MGO will be kept within the acceptable range for engine operation if the
fuels are cooled by freshwater from the central cooling system (with temperatures
between 25 and 36 °C). A chiller unit (cooling from refrigeration) may be needed
for off-spec fuels that are not supported by WinGD.
Fuel oil filter
An automatic self-cleaning filter with a maximum of 10
m mesh size must be in
-
stalled close to engine inlet, as indicated in
. The working
temperature is up to 60°C.
4.6.3
Flushing the fuel oil system
For flushing of the fuel oil system refer to the latest version of the relevant
In
-
struction
(DG 9723), which is provided on the WinGD webpage under the fol
-
lowing link:
Instruction for flushing - Fuel oil system
Type
Positive displacement screw pump with built-in safety valve
Capacity
According to
, with a tolerance of 0 to +20% of the GTD
value.
Inlet pressure
As defined by the supplier
Delivery head
Ensure an engine inlet pressure of 10bar(g) at main engine stop
condition, with consideration of pressure loss over piping and
static height — Refer to
.
Working temperature
Up to 60°C
