Turbocharger System: Section 12
Turbocharger System: Section 12
Turbocharger System
Description
Working card
Plates
Description
Turbocharger System 512.01
Page 1 (2)
Edition 01H
L23/30H
Water washing, turbine side, inlet P7 Exhaust gas, outlet P2 M1 Charge air, inlet
P8 Water washing,
compressor side with
quick coupling, inlet
Exhaust gas to TC
Water washing
compressor side
The turbocharger pumps the air through the char The exhaust gas receiver is made of pipe sections,
ging air cooler to the charging air receiver. From the one for each cylinder, connected to each other, by
charging air receiver, the air flows to each cylinder, means of compensators, to prevent excessive stress
through the inlet valves. in the pipes due to heat expansion.
12.13 - ES0
MAN Diesel
L23/30H
In the cooled intermediate piece a thermometer for To avoid excessive thermal loss and to ensure a
reading the exhaust gas temperature is fitted and reasonably low surface temperature the exhaust gas
there is also possibility of fitting a sensor for remote receiver is insulated.
reading.
12.13 - ES0
MAN Diesel
General
Fouling of air filter, compressor or charging air cooler The intervals between cleaning by injection of water
may be observed as changes in performance para- should be adjusted after assessing the degree and
meters: rate of fouling in the particular plant, i.e. based on
observations and experience.
- Decreasing charging air pressure.
- Decreasing turbocharger rotor speed.
- Increasing exhaust gas temperature.
- Severe fouling of airways may even result in
compressor surge.
94.26 - ES0U-G
MAN Diesel
L21/31, L27/38
L23/30H, V28/32S
Description Cleaning System
The tendency to fouling on the gas side of turbo- The cleaning system consists of a cleaning agent
chargers depends on the combustion conditions, container (2) with a capacity of approx. 0.5 liters and
which are a result of the load and the maintenance a removable cover. Furthermore the system consists
condition of the engine as well as the quality of the of an air valve (3), a closing valve (1) and two snap
fuel oil used. on connectors.
Fouling of the gas ways will cause higher exhaust The position numbers (2) and (3) indicate the system's
gas temperatures and higher wall temperatures of "blow-gun". Only one "blow-gun" is used for each
the combustion chamber components and will also engine plant. The blow-gun is working according to
lead to a higher fuel consumption rate. the ejector principle with pressure air (working air)
at 5-7 bar as driven medium. Injection time approx.
Tests and practical experience have shown that radi- 2 min. Air consumption approx. 5 Nm3/2 min.
al-flow turbines can be successfully cleaned by the
dry cleaning method.
97.08 - ES2
MAN Diesel
2. Designation unknown
3. "Grade 16/10"
6. "Crushed Nutshells"
7. "Turbine Wash"
97.08 - ES2
MAN Diesel
L21/31, L27/38
L23/30H, V28/32S
8. "A-C Cleaner" (Activated Coal)
9. "OMT-701"
Marix KK
Kimura Bldg., 6-2-1 Shinbashi
Minato-Ku, Tokyo 105, Japan
Tel.: 03-4 36-63 71, Telex: 242-7232 MAIX J
10. "OMT-701"
OMT Incorporated
4F, Kiji Bldg., 2-8 Hatchobori,
4-chome, Chuo-Ku, Tokyo 104, Japan
Tel.: 03-5 53-50 77, Telex: 252-2747 OMTINC J
Hikawa Marine
Kaigan-Dori 1-1-1, Kobe 650, Japan
Tel.: 0 78-3 21-66 56
Mashin Shokai
Irie-Dori, 3-1-13, Hyogo-Ku
Kobe 652, Japan
Tel.: 0 78-6 51-15 81
13. Granulate
MAN Diesel
Teglholmsgade 41 2450 København SV, Danmark
Tel.: +45 33 851100 Fax.: +45 33 851030
The list is for guidance only and must not be considered complete. We
undertake no responsibility that might be caused by these or other pro-
ducts.
97.08 - ES2
MAN Diesel
General
Description
The tendency to fouling on the gas side of turbo Heavily contaminated turbines, which where not
chargers depends on the combustion conditions, cleaned periodically from the very beginning or after
which are a result of the load on and the maintenance an overhaul, cannot be cleaned by this method.
condition of the engine as well as the quality of the
fuel oil used. If vibration in the turbocharger occur after water-wa
shing has been carried out, the washing should be
Fouling of the gas ways will cause higher exhaust repeated. If unbalance still exists, this is presumably
gas temperatures and higher surface temperatures due to heavy fouling, and the engine must be stop
of the combustion chamber components and will ped and the turbocharger dismantled and manually
also lead to a lower performance. cleaned.
Tests and practical experience have shown that The washing water should be taken from the fresh
radial-flow turbines can be successfully cleaned water system and not from the fresh cooling water
by injection water into the inlet pipe of the turbine. system or salt water system. No cleaning agents and
The cleaning effect is based on the water solubility solvents need to be added to the water.
of the deposits and on the mechanical action of the
impinging water droplets and the water flow rate. To avoid corrosion during standstill, the engine must,
upon completing of water washing run for at least 1
The necessary water flow is dependent on the gas hour before stop so that all parts are dry.
flow and the gas temperature. Enough water must be
injected per time unit so that, not the entire flow will
evaporate, but about 0.25 l/min. will flow off through Water Washing System
the drainage opening in the gas outlet.Thus ensuring
that sufficient water has been injected. The water washing system consists of a pipe system
equipped with a regulating valve, a manoeuvring
Service experience has shown that the above men valve, a 3-way cock and a drain pipe with a drain
tioned water flow gives the optimal cleaning effect. If valve from the gas outlet, see illustration on working
the water flow is reduced the cleaning effect will be card 512-15.00.
reduced or disappear. If the recommended water flow
is exceed, there is a certain risk of a accumulation The water for washing the turbine, is supplied from
of water in the turbine casing, which can result in the external fresh water system through a flexible
damage on the turbocharger. hose with couplings. The flexible hose must be
disconnected after water washing.
The best cleaning effect is obtained by cleaning at
low engine load approx. 20% MCR. Cleaning at low By activating the manoeuvring valve and the regu
load will also reduce temperature shocks. lating valve, water is led through the 3-way cock to
the exhaust pipe intermediate flange, equipped with
Experience has shown, that washing at regular inter a channel to lead the water to the gas inlet of the
vals is essential to successful cleaning, as excessive turbocharger.
fouling is thus avoided. Washing at intervals of 100
hours is therefore recommended. Depending on the The water which is not evaporated, is led out through
fuel quality these intervals can be shorter or longer. the drain pipe in the gas outlet.
However, the turbine must be washed at the latest
when the exhaust gas temperature upstream of the
turbine has risen about 20° C above the normal
temperature.
96.39 - ES0
MAN Diesel
L23/30H
Description:
Related procedure:
96.20 - ES0S
MAN Diesel
L23/30H
The charging air cooler is normally cleaned and 4) Clean the cooler element of the water and air
overhauled at the intervals indicated in the "Planned sides.
Maintenance Program", or if observations prove that
the cooler does not work satisfactory, see section After using cleaning agents the manufacting recom-
502. mendation must be followed.
96.20 - ES0S
MAN Diesel
5, 6L23/30H
Description:
Starting position:
Related procedure:
Manpower:
Replacement and wearing parts:
08028-0D/H5250/94.08.12
91.45 - ES0S
MAN Diesel
5, 6L23/30H
Cleaning Procedure. Compressor cleaning by inspection of water with
a hand injector is sufficient if a normal degree of
The cleaning process is only to be carried out, when fouling is present.
the engine is at operating temperature and when it
is loaded as close as possible to full load. In case of serve dirt being deposited in the compres-
sor, dismantling of the compressor, is necessary.
The engine must not be shut off immediately after
cleaning but should be allowed to operate continuous- Components for mechanical and manual cleaning
ly for some time to ensure drying out of the charge are necessary.
air system.
For manual cleaning of compressor, see special
instruction.
Sequence of Operations.
For water washing of compressor side, see also
1) Run the engine with as high a load as pos- description for water washing.
sible.
91.45 - ES0S
MAN Diesel
7, 8L23/30H
Description:
Starting position:
Related procedure:
91.45 - ES0S
MAN Diesel
7, 8L23/30H
Cleaning Procedure. If necessary, carry out the washing once more, but
with 10 minutes interval from the initial washing.
The cleaning process is only to be carried out, when
the engine is at operating temperature and when it Compressor cleaning by injection of water is sufficient
is loaded as close as possible to full load. if a normal degree of fouling is present.
The engine must not be shut off immediately after In case of severe dirt being deposited in the compres-
cleaning but should be allowed to operate continuous- sor, dismantling of the compressor components for
ly for some time to ensure drying out of the charge manual cleaning is necessary.
air system.
For manual cleaning of compressor side , see spe-
cial instruction.
Sequence of Operations.
For water washing of compressor side, see also
1) Run the engine with as high a load as pos- description for water washing.
sible.
4) Run the engine for about 10 minutes at unal- 1 Charge air line 2 Pipe
tered high load. 3 Manoeuvring valve 4 Hose or pipe
5 Dosage container 6 Filling plug
5) Make comparative measurement of the opera- 7 Hose or pipe 8 Injection tube
ting data.
91.45 - ES0S
MAN Diesel
L16/24
L23/30H
Starting position
Related procedure
Data
10.13 - ES0
MAN Diesel
L16/24
L23/30H
5-7 bar
1 Stop valve
2 Container
3 Valve
4 Working air
1 2 3 4
Dry cleaning
Depending on the type of engine and turbocharger, Fill the container (2) with granulate. The amount
the arrangement of items may also differ somewhat depending on the type of turbocharger;
from that shown in the schematic.
NR12, NR14, NR15,
Appropriate cleaning materials are granulates from NR17, NR20....................................0.3 liter
nut shells or activated charcoal of a grain size of 1
mm (max. 1.5 mm). NR24, NR26....................................0.4 liter
10.13 - ES0
MAN Diesel
L23/30H
Description:
Starting position:
Related procedure:
91.04 - ES0S
MAN Diesel
L23/30H
Cleaning Procedure. 3) Turn the 3-way cock to position 2 "Open", see
fig. 2 and check for free passage. If ok turn to the
1) Adjust the engine load to approx. 20 % and let water wash position 3 "Wash".
the engine stabilize for 10 min.
4) Connect the water supply to the water wash
2) Open the drain cock at the turbocharger outlet system.
and check for free passage, see fig 1.
5) Activate the manoeuvring valve, see fig 1.
Fig 1. Arrangement for water washing. Note: The regulating valve has to be opened
slowly.
91.04 - ES0S
MAN Diesel
Plate
Page 1 (2) Charging Air Cooler - Freshwater 51201-04H
5L23/30H-720/750 RPM
6L23/30H-720/750 RPM
08028-0D/H5250/94.08.12
97.06 - ES0S
MAN Diesel
Plate
51201-04H Charging Air Cooler - Freshwater Page 2 (2)
5L23/30H-720/750 RPM
6L23/30H-720/750 RPM
Item Item
No. Qty. Designation Benævnelse No. Qty. Designation Benævnelse
When ordering spare parts, see also page 500.50. Ved bestilling af reservedele, se også side 500.50.
* = Only available as part of a spare parts kit. * = Kun tilgængelig som en del af et reservedelssæt.
Qty./E = Qty./Engine. Antal/E = Antal/Motor
Qty./K = Cooler Antal/K = Køler
97.06 - ES0S
MAN Diesel
Plate
Page 1 (2) Charging Air Cooler - Freshwater 51201-05H
6L23/30H-900 RPM
7-8L23/30H-720/750/900 RPM
08028-0D/H5250/94.08.12
97.06 - ES0S
MAN Diesel
Plate
51201-05H Charging Air Cooler - Freshwater Page 2 (2)
6L23/30H-900 RPM
7-8L23/30H-720/750/900 RPM
Item Item
No. Qty. Designation Benævnelse No. Qty. Designation Benævnelse
When ordering spare parts, see also page 500.50. Ved bestilling af reservedele, se også side 500.50.
* = Only available as part of a spare parts kit. * = Kun tilgængelig som en del af et reservedelssæt.
Qty./E = Qty./Engine. Antal/E = Antal/Motor
Qty./K = Cooler Antal/K = Køler
97.06 - ES0S
MAN Diesel
Plate
Page 1 (2) Exhaust Pipe Arrangement 51202-01H
5L23/30H
6L23/30H-720/750 RPM
132
073 061 085 107
132 276
097
132
288
156
168
144
156
239
012-181
240
024 024
036 215
193 227
203 264
252
264
08028-0D/H5250/94.08.12
98.34 - ES0S
MAN Diesel
Plate
51202-01H Exhaust Pipe Arrangement Page 2 (2)
5L23/30H
6L23/30H-720/750 RPM
Item Item
no. Qty. Designation Benævnelse no. Qty. Designation Benævnelse
When ordering spare parts, see also page 500.50. Ved bestilling af reservedele, se også side 500.50.
* = Only available as part of a spare parts kit. * = Kun tilgængelig som en del af et reservedelssæt.
Qty./E = Qty./Engine Antal/E = Antal/Motor
Qty./C = Qty./Cylinder Antal/C = Antal/cylinder
98.34 - ES0S
MAN Diesel
Plate
Page 1 (2) Turbocharging Arrangement 51203-09H
5L23/30H-720/750 RPM
6L23/30H-720/750 RPM
08028-0D/H5250/94.08.12
03.18 - ES0S
MAN Diesel
Plate
51203-09H Turbocharging Arrangement Page 2 (2)
5L23/30H-720/750 RPM
6L23/30H-720/750 RPM
Item Item
No. Qty. Designation Benævnelse No. Qty. Designation Benævnelse
043 1/E Bracket for Konsol for 462 1/E Diffusor Diffuser
tubocharger turbolader
508 1/E Compensator Kompensator
055 6/E Screw Skrue
When ordering spare parts, see also page 500.50. Ved bestilling af reservedele, se også side 500.50.
* = Only available as part of a spare parts kit. * = Kun tilgængelig som en del af et reservedelssæt.
Qty./E = Qty./Engine Antal/E = Antal/Motor
Qty./C = Qty./Cylinder Antal/E = Antal/Cylinder
Qty./I = Qty./Individual Antal/I = Antal/Individuelt
03.18 - ES0S
MAN Diesel
Plate
Page 1 (2) Turbocharging Arrangement 51203-11H
5L23/30H-720/750/900 RPM
6L23/30H-720/750 RPM
08028-0D/H5250/94.08.12
01.30 - ES0S
MAN Diesel
Plate
51203-11H Turbocharging Arrangement Page 2 (2)
5L23/30H-720/750/900 RPM
6L23/30H-720/750 RPM
Item Item
No. Qty. Designation Benævnelse No. Qty. Designation Benævnelse
043 1/E Bracket for Konsol for 462 1/E Diffusor Diffuser
tubocharger turbolader
508 1/E Compensator Kompensator
055 6/E Screw Skrue
When ordering spare parts, see also page 500.50. Ved bestilling af reservedele, se også side 500.50.
* = Only available as part of a spare parts kit. * = Kun tilgængelig som en del af et reservedelssæt.
Qty./E = Qty./Engine Antal/E = Antal/Motor
Qty./C = Qty./Cylinder Antal/E = Antal/Cylinder
Qty./I = Qty./Individual Antal/I = Antal/Individuelt
01.30 - ES0S
MAN Diesel
Plate
Page 1 (2) Blowgun for Dry Cleaning of Turbocharger 51210-01
L23/30H, L21/31,
L27/38, V28/32S
053
016 112 028 041 028 065 077
089 148
100
136
08028-0D/H5250/94.08.12
01.12 - ES0
MAN Diesel
Plate
51210-01 Blowgun for Dry Cleaning of Turbocharger Page 2 (2)
L23/30H, L21/31,
L27/38, V28/32S
Item Item
No. Qty. Designation Benævnelse No. Qty. Designation Benævnelse
08028-0D/H5250/94.08.12
When ordering spare parts, see also page 500.50. Ved bestilling af reservedele, se også side 500.50.
* = Only available as part of a spare parts kit. * = Kun tilgængelig som en del af et reservedelssæt.
Qty./E = Qty./Engine Qty./E = Qty./Motor
Qty./I = Qty./Individual Qty./I = Qty./Individuelt
01.12 - ES0