Z001019/0_6_July 2008
Page FUEL SYSTEM - 3
SERVICE MANUAL MARINE ENGINES
03 FUEL SYSTEM
Functional Description
When the ignition switch is turned, an electric fuel pump
1
is put into operation and sucks fuel from the
fuel tank
2
. This fuel is led via fuel filter
3
to the fuel pump. From the fuel pump, fuel is pumped to the
engine block
4
and the unit injectors
5
. Excess fuel not injected by the unit injectors is led via fuel cooler
6
back to the fuel tank.
The operating pressure is controlled by pressure valve
7
(1,8 - 2,5 bar at idle).
8
anti-siphon valve;
9
baffles (depending on tank size)
For fuel requirements, refer to chapter GENERAL
Specification for fuel pipes
Minimum inside diameter:
8 mm
Recommended material:
stainless steel or copper
NOTE:
Min. inside diameter for hosepipes or PA-pipes is
10 mm.
Rate of flow:
> 240l/h +/-7
(in case of continuously operating pump)
If additional filters are installed, the requirements of
higher flow rates must to be considered. (filter dimension)
NOTE:
In case of pipe connections, pay special attention to the
tightness of the suction pipe (all fittings and line before fuel pump)!
Types of pipe connections
03.00 ill. 2
03.00 ill. 1
ToC
Содержание M0114K33
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