Operation0750−1/A1
Winterthur Gas & Diesel Ltd.
12/ 18
D Range 3 (see Fig. 2): When the fuel sulphur content is more than 0.5% m/m and
less than 1.0% m/m during operation with BN 70 to BN 80 cylinder lubricating oil,
operation is permitted only, when you do an analysis of the piston underside
drain oil from the on-board monitoring system. You must obey the data that
follows:
D Do regular checks of the piston and piston ring conditions through scavenge
port inspections.
D Do regular checks of the cylinder liner condition.
D You must obey the data given in Fig. 1.
D Range 4 (see Fig. 2): When the fuel sulphur content is more than 1.5% m/m and
less than 2.0% m/m during operation with BN 100 cylinder lubricating oil, ,
operation is permitted only, when you do an analysis of the piston underside
drain oil from the on-board monitoring system. You must obey the data that
follows:
D Do regular checks of the piston and piston ring conditions through scavenge
port inspections.
D Do regular checks of the cylinder liner condition.
D You must obey the data given in Fig. 1.
D Range 5 (see Fig. 2): When the fuel sulphur content is more than 2.5% m/m and
less than 3.5% m/m during operation with BN 70 to BN 80 cylinder lubricating oil,
operation is permitted only, when you do an analysis of the piston underside
drain oil from the on-board monitoring system. You must obey the data that
follows:
D Do regular checks of the piston and piston ring conditions through scavenge
port inspections.
D Do regular checks of the cylinder liner condition.
D You must obey the data given in Fig. 1.
Note: From 1
st
January 2015 only fuel with less than 0.1% m/m sulphur content
must be used in Emission Control Areas (ECA). You can use SO
x
scrubbers to reduce the effective exhaust sulphur content. For more data,
see paragraph 7.
Note: Use a BN 100 cylinder lubricating oil, if the fuel sulphur content is more
than 2.5% m/m and no piston underside drain oil monitoring system is
installed.
Note: Monitor the piston underside residual BN of the cylinder lubricating oil
and examine the piston rings and cylinder liners. This makes sure that
you select the applicable BN oil, set the best oil feed rate, prevent
corrosion and excessive piston crown deposits and top land deposits.
For more data, see 7218−1 Cylinder Lubrication and 7218−3 Feed Rate −
Adjustment.
Note: If you use fuel with a sulphur content in the range of between 0.1% m/m
and 0.5% m/m and a cylinder lubricating oil with BN15 or BN25, the
maximum permitted feed rate can be more than 1.2 g/kWh.
Cylinder lubricating oils that have a BN that is too high for the fuel sulphur content can
cause excessive deposits on the piston crown. Piston crown deposits must be
carefully monitored through scavenge port inspections. The deposits can cause the
lubricant film to break down and excessive liner, piston and piston ring wear.
2016−11
Lubricating Oils
To Next Page
Loading...
