Diesel - Volkswagen Marine SDI Series Operating Manual

Diesel

The diesel fuel must comply with the stan-
1)
dard DIN EN 590.
2)
CN no lower than 49.
RME fuel (biodiesel)
in accordance with DIN 51 606.
Volkswagen Marine boat engines can also
be operated with RME fuel (rape-oil fatty
acids methylester).
Important
It must be ensured that the fuel
tank and the fuel hoses to the
engine are also suitable for RME
fuel.
Special features of RME
RME is a plant-based oil (primarily
rapeseed), manufactured using a chemical
process in which a catalytic element is
employed to transform a mixture with
methanol into RME fuel.
RME is virtually sulphur-free. This means
that practically
emissions (SO ) are generated when it
2
combusts.
The exhaust gas contains
-
less carbon monoxide,
-
fewer hydrocarbons and
-
fewer particles (e.g. soot)
compared to the emissions produced by
conventional diesel fuels.
All emission levels are lower than those laid
down by law.
Euro Standard
1)
Cetan Number. Measure of the ignitability of
2)
diesel fuel.
OPERATING INFORMATION
no sulphur dioxide
The RME fuel is biodegradable.
Its use may be accompanied by slight
reductions in performance.
Fuel consumption may be slightly higher.
RME is suitable for winter use at tem-
peratures down to about –10
At outside temperatures below approx.
o
–10 C diesel fuel must be added to prevent
the RME fuel from flocculating. The mixing
ratio of diesel fuel to RME fuel should be
approx. 50 : 50.
If RME percentage is higher than
50%, more smoke may be produced.
RME can be mixed with diesel fuel in any
desired ratio during the warm season.
Winter operation
When using summer diesel, malfunctions
may occur at outside temperatures below
o
0 C, as the fuel also becomes too thick due
to paraffin precipitation.
Therefore, "winter" diesel fuel is available
in Germany at roadside petrol stations dur-
ing the cold season which - depending on
the fuel brand - is also safe for operation at
approximately -15
In countries with other climatic conditions,
diesel fuels with a different temperature
behaviour are offered.
DO-IT-YOURSELF
o
C.
o o
C to -22 C.
19
19