Engine-related systems - engine V32/40
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5.1 Engine-related systems - engine V32/40
5.1.1 Lube oil system
PDS: 30 20
Purpose
The lube oil system serves to
? supply the Diesel engine with lube oil of the
necessary amount, pressure, temperature
and quality during all loads, and to suitable
environmental conditions,
? dissipate heat generated by the engine, and
? maintain the lube oil.
Feature
The main lube oil system is a closed circulation
system with a connection to the atmosphere via
the tank vent pipe and the crankcase vent pipe.
Components
Main components
The lube oil system consists of the following
main components:
? Lube oil service tank T001, integrated in the
steel base frame.
When operating the engine the oil level must
lie between the minimum and maximum
gauges of the service tank.
? Screw pump P001 for the circulation of the oil
and the generation of pressure with integrat-
ed control valve against overpressure. The
pump is driven by an electric motor.
? Cooler HE002, designed as plate cooler. It
serves to draw off the heat accumulated in
the system.
? Temperature control valve TCV001 to keep
the oil temperature constant or to keep a cer-
tain minimum oil temperature.
? Service filter FIL001 (automatic filter 30μm
with continuous cross flow back flushing and
integrated indicator screen 100μm) to protect
the engine. Impurities of the oil are intercept-
ed by the filter. Filters are always placed di-
rectly in front of the engine inlet.
? Pressure regulating valve PCV007 to main-
tain the required oil pressure before the en-
gine over the entire operating range.
? Elevated run-down tank T050, Figure 6-45,
Page 6-50, optional to secure emergency lu-
brication during engine run-out in case of a
power blackout.
Components in auxiliary module
For engine 32/40 the following components are
assembled and connected by pipes in auxiliary
module MOD003 Figure 6-43, Page 6-48:
? Screw pump P001.
? Cooler HE002.
? Temperature control valve TCV001.
? Service filter FIL001.
? Pressure control valve PCV007.
Auxiliary systems connected to main system
The following auxiliary systems are connected
to the main system:
? Preheating system (optional)
Arranged parallel to the main system. If the
engine is loaded immediately after the accel-
eration the oil must have a certain minimum
temperature. The preheating takes place in-
directly.
? Cleaning system MOD007, Figure 6-44, Page
6-49.
This system is of special importance. The
lube oil cleaning takes place by a purifier par-
allel to the main system. The purifier is the
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only component in the system that removes
impurities from the system.
? Crankcase vent pipe system.
With outlet to the atmosphere. A trap sepa-
rates the oil mist / condensate produced in
the engine. The crankcase vent pipe is to be
installed with negative incline away from the
engine to outdoors.
? Tank vent pipe
Design and function are comparable with the
crankshaft vent pipe system
? Feed of fresh oil.
MAN B&W Diesel does not regulate routine
oil change intervals. A (part) oil change is to
take place when the limit value for used en-
gine oils is exceeded (see MAN B&W Diesel
Work Card 000.04). The consumed lube oil is
continuously replaced by fresh oil.
Main operating conditions
Lube oil temperature before engine........... 65°C
Lube oil pressure before engine ..... 3.5... 4.5bar
Lube oil temperature before purifier .......... 95°C
Viscosity..................................................SAE 40
Lube oil quality
Lube oil quality requirements
See
? Chapter 3.1 "Quality of lube oil for operation
on gas oil and Diesel oil (MGO/MDO)", Page
3-3, and
? Chapter 3.2 "Quality of lube oil for heavy fuel
oil operation (HFO)", Page 3-7.
Selection of suitable lube oil
See
? Chapter 3.1 "Quality of lube oil for operation
on gas oil and Diesel oil (MGO/MDO)", Page
3-3, and
? Chapter 3.2 "Quality of lube oil for heavy fuel
oil operation (HFO)", Page 3-7.
Assessment and treatment of lube oils
See MAN B&W Diesel Work Card 000.04.
Checking lube oil
Good oil lifetimes imply
? Regular oil checking
? Continuous oil care
- Checking separator adjustment and effi-
ciency
- Monitoring the optimal operation of the
lube oil automatic filter.
See
? Chapter 3.1 "Quality of lube oil for operation
on gas oil and Diesel oil (MGO/MDO)", Page
3-3,
? Chapter 3.2 "Quality of lube oil for heavy fuel
oil operation (HFO)", Page 3-7, and
? MAN B&W Diesel Work Card 000.04.
The lube oil pollution is to be checked in the in-
tervals given in the maintenance plan of the en-
gine.
If the lube oil does not meet our quality require-
ments (see MAN B&W Diesel Work Card 000.04)
it is to be replaced. When replacing the oil, take
care that the entire system contents is replaced.
Not only the engine oil sump and service tank
are to be drained but the pipe system as well.
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Engine-related systems - engine V32/40
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Engine 32/40
Figure 5-1 Equipment schedule for lube oil system- engine V32/40
Engine-related systems - engine V32/40
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Engine V 32/40
Figure 5-2 Schematic diagram for lube oil system - engine V 32/40
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