Maintenance Section
-126-
Bio-Diesel Fuels
In Europe and the United States, as well as some other
countries, non-mineral oil based fuel resources such as
RME (Rapeseed Methyl Ester) and SOME (Soybean
Methyl Ester), collectively known as FAME (Fatty Acid
Methyl Esters), are being used as extenders for mineral
oil derived diesel fuels.
Doosan approves the use of bio-diesel fuels that do not
exceed a blend of 5% (in volume) of FAME with 95% (by
volume) of approved mineral oil derived diesel fuel. Such
bio-diesel fuels are known in the marketplace as B5
diesel fuels.
These 95 diesel fuels must meet certain requirements.
1. The bio-fuels must meet the minimum specifications
for the country in which they are used.
In Europe, bio-diesel fuels must comply with the
European Standard EN14214.
In the United States, bio-diesel fuels must comply
with the American Standard ASTM D-6751.
Bio-fuels should be purchased only from recognized and
authorized diesel fuel suppliers.
Precautions and concerns regarding the use of bio- fuels:
1. Free methanol in FAME may result in corrosion of
aluminum and zinc FIE components.
2. Free water in FAME may result in plugging of fuel
filters and increased bacterial growth.
3. High viscosity at low temperatures may result in fuel
delivery problems, injection pump seizures, and poor
injection nozzle spray atomization.
4. FAME may have adverse effects on some
elastomers (seal materials) and may result in fuel
leakage and dilution of the engine lubricating oil.
5. Even bio-diesel fuels that comply with a suitable
standard as delivered, will require additional care and
attention to maintain the quality of the fuel in the
equipment or other fuel tanks. It is important to
maintain supplied fuels clean and fresh. Regular
flushing of the fuel system, and/or fuel storage
containers, is necessary.
6. The use of bio-diesel fuels that do not comply with
the standards as agreed to by the diesel engine
manufacturers and the diesel fuel injection
equipment manufacturers, or biodiesel fuels that
have degraded as per the precautions and concerns
above, may affect the warranty coverage of your
engine.
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