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FUEL SYSTEM
1.
Electric power generator unit
2.
Main fuel line
3.
Return line from fuel pump
4.
Return line from injectors
5.
External fuel filter
6.
Level indicator
7.
Electrical or pneumatic level
indicator connection place
8.
Tank optical level indicator
9.
Tank ventilation
10.
Filling pipeline
11.
Condensate drain
12.
Condensate tank
13.
Storage tank
14.
Filling pipe
15.
Storage tank ventilation
16.
Overflow
17.
Storage tank leak detector
18.
Leak warning indicator
19.
Storage tank fuel level indicator
20.
Inspection hatch
21.
Electric pump
Fuel system
22.
Electric pump suction line
23.
Hand pump
24.
Hand pump suction line
25.
Three-way cock
26.
Coarse filter
27.
Flow meter
28.
Shutoff valve
29.
Drain and overflow pipeline
30.
Channel for pipelines
27
If longer fuel lines are used their diameter should be increa-
sed (see the data of the engine manufacturer).
To prevent transfer of vibration from the engine the following
elements may be used depending on the type of the engi-
ne:
– short inserts of fire-proof rubber hose resistant to diesel
fuel with terminated thread connections,
– elastic low-pressure hoses in metal braiding resistant to
diesel fuel with special connections.
Hose unions of synthetic materials should not be used in any
case.
When mounting auxiliary elements pay special attention to
the following:
– Pipeline fastening brackets should be located at such
distance from one another as to exclude vibration reso-
nance phenomenon and bending of pipelines under their
own weight (particularly, if these pipelines are made of
copper).
– All connections should be hermetically tight to exclude
suction of air. Otherwise, the fuel mixture is bound to be
poor and the engine will be difficult to start.
– The fuel lines should end below the main fuel tank at a
height of approximately 20 - 30 cm from the floor.
The feed and return lines should be separated by not less
than 30 cm to exclude penetration of warm return fuel
containing air into the engine.
– The fuel lines should be always kept in a clean state.
– Avoid sharp bends of pipelines. All bends should have a
large turning radius.
The figure shows the layout of the fuel system with an exter-
nal fuel tank, storage tank and an electric pump.
Tehe max. pressure should not exceed 0,8 bar.
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