alpha lubricator upgrade
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8/9/2019 Alpha Lubricator Upgrade
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Alpha Lubricator UpgradeSlow Steaming Kit
Reduction of cylinder oil costs
In early 2012, a new layout of the Alpha
Lubricator in new MC engines was intro-
duced. Along with a number of designimprovements, the injection volume and
frequency has been changed in order to
optimise the cylinder oil consumption at
low load.
Now, Alpha Lubricator Upgrade is intro-
duced as a retrofit solution, optimising cyl-
inder oil consumption in existing engines.
A consequence of substantial over-lubri-
cation at low load is generating deposits
on the piston crown and rings, increasing
the risk of damage to the cylinder liners.In addition, over-lubrication generates ex-
cess costs for unnecessary lubrication oil.
The Alpha Lubr icator Upgrade is a major
improvement of the system. By adapting
the new lubricator layout, a complete lu-
brication optimisation at all engine loads
is now possible.
Benefits of upgrading the system
Cylinder lubrication oil savings of 20-50%
at low load
More accurate feed rate control at all
engine loads
Minimising over-lubrication at low load,
reducing deposits, hence improving the
cylinder condition
Implementation of latest design features
Upgraded interface by latest software
version.
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MAN Diesel & Turbo
PrimeServ Copenhagen
Teglholmsgade 41
2450 Copenhagen SV, Denmark
www.mandieselturbo.com
Spare Parts
(Two-stroke)
Phone +45 33 85 11 00
Fax +45 33 85 10 49
Emergency phone after office hours:
+45 40 19 35 01
Technical Service
Phone +45 33 85 11 00
Fax +45 33 85 10 49
Emergency phone after office hours:
+45 20 48 94 40
Forwarding & Receiving Teglholmsgade 35
2450 Copenhagen SV, Denmark
Phone +45 33 85 11 00
Fax +45 33 85 10 16
MAN Diesel & Turbo
PrimeServ Copenhagen
Teglholmsgade 412450 Copenhagen SV, Denmark
Phone +45 33 85 11 00
Fax +45 33 85 10 49
www.mandieselturbo.com
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Reduction factor [-]Specific feed rate [g/kWh]
Engine rpm (of MCR) [%]
Cylinder oil feed rate
~10% Engine load ~25% Engine load
Breakpoint at 15 revolution/injectioncorresponding to ~35% engine load
High load breakpoint
25% load breakpoint
Reduced load breakpoint
A l l d a t a pr ov i d e d i n t h i s d o c um e n t i s n on- b i n d i n g.T
h i s d a t a s e r v e s i nf or m a t i on a l p ur p o s e s onl y a n d i s e s p e
c i a l l y n o t g u a r a n t e e d i n a n y w a y .D e p e n d i n g on t h e s u b s e q u e n t s p e c i f i c i n d i v i d u a l pr o j e c t s , t h e r e l e v a n t d a t a m a y b e s u b j e c t t o c h a n g e s
a n d wi l l b e a s s e s s e d a n d d e t e r mi n e d i n d i v i d u a l l y f or e a c h pr o j e c t .T h i s wi l l d e p e n d on t h e p a r t i c ul a r c h a
r a c t e r i s t i c s of e a c h i n d i v i d u a l pr o j e c t , e s p e c i a l l y s p e c i f i c
s i t e a n d o p e r a t i on a l c on d i t i on s · 3 0 1 0 - 0 2 0 3 - 0 0 p pr M a y
2 0 1 2 P r i n t e d i nD e nm a r k
Alpha Lubricator Upgrade is beneficial to all large bore MC engines
(70-98 bore) and older installations in small bore engines.
Scope of content
The Alpha Lubr icator Upgrade, Slow
Steaming Kit, comprises a new MCU, in-
cluding the latest software, and the im-
proved lubricator layout:
MCU Mk 2: New hardware version, plug
and play in existing ALCU. New software
with upgraded algorithm and system in-
terface
The new lubr icator layout reduces the engine power level at which the algorithm, con-
trolling the cylinder oil feed rate, changes. The “breakpoint” is moved to the left. The
Alpha Lubr icator Upgrade enables the cylinder oil feed rate to follow a lower curve. The
marked area in the figure above corresponds to the potential lubrication oil savings from
upgrading the system.
Savings example on a 12K98MC-C
Lubrication oil consumption at 10% engine load:Before upgrade 240 liters/day
After upgrade 100 lite rs/day
Yearly savings EUR 42,000 (at 6,000 hrs/year & EUR 1,200/ton lub. oil)
Alpha Lubricator UpgradeSlow Steaming Kit
Alpha Lubricator layout
Lubrication algorithm (see Service Letter SL2011-544)
Lubricators: Complete lubricators with
all new design features (recommended at
the standard 5-year lubricator overhaul)
or
Lubricator kits: Parts to modify the lubri-
cators for optimised slow steaming opera-
tion (require that solenoid valves, accumu-
lators, etc. are in good working condition).