TP-5936 7/04 9Section 4 Fuel System
Section 4 Fuel System
4.1 General
In most installations, both the generator set and the
propulsion engine operate from a common fuel tank with
a dual dip tube arrangement. The generator set dip tube
is shorter than the propulsion engine’s dip tube. With
this arrangement fuel may not be available to the
generator set when the fuel supply is low. See
Figure 4-1 for a fuel system schematic.
Generator
Set
Propulsion
Engine
1
2
4
3
To fuel
pump
1. Fuel tank
2. Dual dip tubes
3. Fuel filter
4. Fuel feed pump
Figure 4-1 Fuel System Schematic, Typical
4.2 Fuel Specifications
Use a clean, good quality diesel fuel oil with a cetane
number of 45 or greater. Clean fuel prevents diesel fuel
injectors and pumps from clogging.
Fuel Recommendation
United States ISO 8217 DMA, BS 2869 Part 1 Class A1
or Part 2 Class A2
United Kingdom BS 2869-1983, Part 2 Class A2
Germany DIN 51 601-1978
4.3 Fuel Filter
The quality and condition of the fuel largely determine
the filter’s useful life. Replace the fuel filter according to
the service schedule.
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