MAN B&W L28/32H, Руководство пользователя

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08028-0D\H5250\94.08.12
1607543-9.5
Page 1 (2)
B 11 00 0
L28/32H
Internal Fuel Oil System
99.48
Fig 1 Diagram for fuel oil system.
Pipe description
DN 15
DN 25
DN 25
Waste oil outlet
Fuel oil inlet
Fuel oil outlet
A3
A1
A2
Flange connections are as standard according to DIN 2501
General
The internal built-on fuel oil system as shown in fig 1
consists of the following parts:
– a fuel oil feed system
– the high-pressure injection equipment
– a waste oil system
Internal Fuel Oil Feed System
The fuel oil is delivered to the injection pumps
through a safety filter.
The safety filter is a duplex filter of the split type with
a filter fineness of 50 my. The filter is equipped with
a common three-way cock for manual change of
both the inlet and outlet side.
A bypass line with a non-return valve parallel to the
feed pump, if mounted, provides circulation of fuel
during standstill of the engine.
Fuel Injection Equipment
Each cylinder unit has its own set of injection equip-
ment, comprising injection pump, high-pressure pipe
and injection valve.
The injection equipment and the distribution supply
pipes are housed in a fully enclosed compartment
thus minimizing heat losses from the preheated fuel.
This arrangement reduces external surface tempe-
ratures and the risk of fire caused by fuel leakage.