L+V48/60CR
Four-Stroke Diesel Engine
MAN Diesel
L+V48/60CR four-stroke diesel engine
Xxxx
MAN Diesel The Responsible Way
in Leading Technology
MAN Diesel is the worlds leading designer and
manufacturer of low and medium speed engines
engines from MAN Diesel cover an estimated 50%
of the power needed for all world trade. We develop
two-stroke and four-stroke engines, auxiliary engines,
turbochargers and propulsion packages that are
manufactured both within the MAN Diesel Group
and at our licensees.
More than ever before, MAN Diesels development focus
is the environmental performance of our engines.
Using our unrivalled grasp of large engine technology,
we aim to make our engines progressively cleaner, more
powerful and more efficient.
Our absolute commitment to reducing emissions while
increasing fuel efficiency and power density starts
with our active partnership in the emissions law making
process and ends with the delivery of engines that
achieve an ideal synthesis of prime mover characteristics.
Efficient, clean and compact
Core technologies in-house
As well as its expertise in engine
The latest development in the
design, development and manufacture
MAN Diesel engine range is across-
MAN Diesel is also a leading manufac-
the-board compliance with the second
turer of the key technologies which
stage of the NOx emissions limits
determine the economic and ecological
of the International Maritime
performance of a diesel engine:
Organisation IMO Tier II combined
>> high-efficiency exhaust gas
with optimized operating economy.
turbochargers
>> advanced electronic fuel injection
The range of technical measures
employed comprises:
equipment
>> electronic hardware and software
for engine control, monitoring
and diagnosis
Our impressive array of computer-aided
design tools and one of the engine
industrys largest, best-equipped found-
>> Improved charge air cooling
>> Enhanced turbocharging
>> Miller valve timing
>> Revised injection timing
>> Higher compression ratios
>> Low swirl inlet ports
>> Variable valve timing (VVT)
ries allow us decisively to shorten
product development, and application
engineering processes.
Committed to the future
Our mastery of these engine technologies and, the best brains in the
Technologies which promise compliance
large engine industry are the firm
with the IMO Tier III round of emissions
foundation for
limits due in 2016 combined with
>> low emissions
>> low operating costs
>> low life cycle costs
>> long service life
further optimised fuel consumption and
new levels of power and flexibility are
already under development at
MAN Diesel.
With this level of commitment
MAN Diesel customers can plan with
confidence.
L+V48/60CR four-stroke diesel engine
Engine specifications
NOx Reduction Measures
L+V48/60CR
RI Retarded Injection
Miller Valve Timing
Retarded injection timing delays
To reduce the temperature peaks
combustion heat release and thus
which promote the formation of NOx,
lowers combustion chamber
early closure of the inlet valve causes
temperature peaks.
the charge air to expand and cool
before start of compression. The
New Piston for Increased
Compression Ratio
resulting reduction in combustion
temperature reduces NOx emissions.
The use of a new piston provides
a higher compression ratio
High Pressure Ratio Turbocharger
and gives a faster reduction in
The use of MAN Diesel turbochargers
temperature after the ignition of the
equipped with the latest high
fuel, thus reducing NOx formation.
efficiency compressor wheels can
The increase in compression ratio
alleviate the NOx-SFOC trade off.
also compensates the reduction in
The higher pressure ratio increases
firing temperature due to retarded
the efficiency of the engine and thus
injection and hence the associated
compensates the increase in SFOC
increase in SFOC.
normally associated with lower NOx
emissions.
VVT Variable Valve Timing
The higher pressure ratio also incre-
Variable valve timing enables
ases the scope for Miller valve timing.
variations in the opening and closing
of the inlet and exhaust valves.
Common Rail Injection
It can be used to compensate the
The 48/60 common rail injection
increase in SFOC associated with
system uses the latest MAN Diesel
lower NOx emissions.
common rail technology which allows
VVT is an enabling technology of
flexible setting of injection timing,
variable Miller valve timing. A strong
duration and pressure for each cy-
Miller effect under high load operation
linder. This flexibility allows the fuel
results in an improvement in the
consumption and emissions of the
NOx-SFOC trade-off.
48/60CR to be optimised at any point
At low load the Miller valve timings
on its operating profile.
are reduced to attain higher
combustion temperatures and thus
lower soot emissions.
L+V48/60CR technical data
L+V48/60CR four-stroke diesel engine
Engine cycle:
four-stroke
Turbocharging system:
constant-pressure
Number of cylinders,
in-line engine:
6, 7, 8, 9
Number of cylinders, V-engine:
12, 14, 16, 18
Bore:
480 mm
Stroke:
600 mm
Swept volume per cyl:
108.6 dm3
Power-to-weight ratio (MCR)
In-line engine:
13 .7 14.7 kg/kW
V-engine:
12 .3 13.1 kg/kW
Cylinder output (MCR)
at 514/500 rpm:
1,200 kW
Cooling
Cylinder cooling (one-stage):
cooling water
Charge-air cooler (two-stage):
fresh water
Fuel injector cooling:
fresh water
Starting method:
compressed air
Power unit output (maximum continuous rating)
Engine speed
514 rpm
500 rpm
Mean piston speed
10.3 m/s
10.0 m/s
Mean effective pressure
25.8 bar
26.5 bar
kW
kW
6L48/60CR
6 cyl.
7,200
7,200
7L48/60CR
7 cyl.
8,400
8,400
8L48/60CR
8 cyl.
9,600
9,600
9L48/60CR
9 cyl.
10,800
10,800
12V48/60CR
12 cyl.
14,400
14,400
14V48/60CR
14 cyl.
16,800
16,800
16V48/60CR
16 cyl.
19,200
19,200
18V48/60CR
18 cyl.
21,600
21,600
L+V48/60CR four-stroke diesel engine
Norwegian Jewel, one engine retrofitted to 12V48/60CR
Specific fuel consumption
100% P
85% P
L48/60CR
180 g/kWh
176 g/kWh
V48/60CR
178 g/kWh
174 g/kWh
The fuel consumption rates are based on a lower calorific value (LHV)
of the fuel of 42,700 kJ/kg without engine driven pumps. Tolerance 5%.
Specific lubricating oil consumption
L+V48/60CR
0.8 g/kWh
The lube oil consumption is given with a tolerance of 20%.
Clean, efficient and powerful
General definition of diesel
engine ratings according to
ISO 30461/1-2002
ISO reference conditions:
Air temperature: 298 K (25C)
Air pressure: 1 bar
Fresh water temperature upstream
of charge-air cooler: 298 K (25C)
Relative humidity: 30%
No power reduction
required below:
Air temperature: 318 K (45C)
Air pressure: 1 bar
Fresh water temperature upstream
L+V48/60CR The modern Powerhouse
Synonymous with top performance and excellent flexi
bility. With the 48/60CR (Common Rail), MAN Diesel is
embarking on a new era in modern diesel engine design.
Based on the more than 600-fold well proven 48/60
engine, the 48/60CR was developed for use as a propulsion engine in cruise liners, tankers or container ships.
By the use of electronic injection, variable valve timing,
improved turbocharger and by improved combustion,
increasingly stringent emission standards can be
of charge-air cooler: 311 K (38C)
fulfilled and improved part load performance (smoke,
IMO requirements:
SFOC) can be obtained without compromising on the
The engine detailed herein will
comply with the emission limits
engines high availability and specific power output. The
refered to as IMO Tier II.
48/60CR thereby sets the new standard in this engine class
The fuel consumption is based on a lower calorific
and is therefore a true prime mover in every respect.
value (LHV) of the fuel of 42,700 kJ/kg without
engine driven pumps. Tolerance 5%. Lubricating oil
consumption value is given with a tolerance of 20%.
Fuels
Injection
The common rail injection system
The patented injection system from
of the 48/60CR was designed for
MAN Diesel is based on the following
operation with heavy fuel oil (HFO)
principle: High pressure pumps com-
in accordance with specification DIN
press the fuel to the required pressure
ISO 8217 (viscosities up to 700 cSt at
and deliver it to the inline accumulator
50C) and fuel temperatures up to
units (common rail). At the accumulator
150C. The fuel oil system is designed
units are connections for the injection
to allow the engine to be started and
valves and also the components for
stopped with HFO. In a load range
fuel distribution and injection control.
from 100% to 20% load, the engine
The common rail system achieves its
can be operated continously, below
high level of flexibility by consistent
20% load for a limited time using HFO.
separation of pressure generation and
Special attention was directed during
injection control (i.e. injection pressure
development on the reliable functionality
and timing for pre- and postinjection).
of all components during operation with
all approved fuel qualities.
8
L+V48/60CR four-stroke diesel engine
Modern and innovative technology
Injection valve
rail unit
control valve
throttle valve
rail cover
high pressure pump
camshaft
Common Rail System Layout
Features and advantages
Electronics
As a matter of principle, MAN Diesel
CR technology are well-proven com-
The 48/60CR is equipped with the
has kept the basic concept of its
ponents with long service experience,
newest generation of proven MAN Diesel
Common Rail Technology as simple as
such as conventional injection nozzles.
engine management system. For the
possible and has integrated technically
With the 48/60CR it has been possible
first time, SaCoSone breaks down all
proven components into the design.
to combine conflicting development
functions of modern engine manage-
For example, in keeping with this
specifications like high power density
ment into one complete system.
philosophy, the design does not use
with low wear and low emissions
Through integration on the engine, it
a separate servo circuit for activating
with low wear in a revolutionary way.
forms one unit with the drive assembly.
the injection valve. Less maintenance is
The engine represents the newest
SaCoSone offers:
one of the benefits as well as extremely
technology in the area of medium
quick and accurate reaction times of
speed operated industrial sized diesel
the injection system. The electronically
engines technology that is ready for
controlled injection valves are on the rail
the future.
>> Integrated self-diagnosis functions
>> Maximum reliability and availability
>> Simple use and diagnosis
>> Quick exchange of modules
outside the cylinder head, resulting in
greater system reliability and very easy
maintainability. Also, integrated into the
(plug in)
>> Trouble-free and time-saving
commissioning
9
Technology for the future
Safety concept
The common rail system comprises
an intelligent designed safety concept:
>> A
ll high pressure pipes are screened
or have a double wall design.
>> Flow limiting valves at each cylinder
prevent uncontrolled injection.
>> R
edundant high pressure pumps
guarantee further operation of the
engine even in the event of high
pressure pump malfunction.
>> T
win type pressure sensors and
speed sensors assure that the
>> W
orldwide service organisation
with more than 150 service stations
>> Q
uick supply of high quality
genuine spare parts
ast, reliable and competent
>> F
support
ngoing information and training of
>> O
service personnel
>> M
aintenance contracts
lmost 110 years of service
>> A
experience with maritime diesel engines
engine stays operational even in
the event of failure of one of these
elements. In case of single engine
Online service
plants the ECUs (Electronic Control
With the new MAN diesel online service,
Units) are in double type as well.
it is possible to transfer important
engine and plant operating data in
coded form. By quick and effective
provision of information, it is possible
to make the technical know-how of
our specialists available throughout
the world in a short space of time at
low costs a service that rounds off
the performance profile of the new
L48/60CR four-stroke diesel engine
48/60 CR in an ideal way.
V48/60BCR four-stroke diesel engine
10
L+V48/60CR four-stroke diesel engine
Dimensions and weights
L+V48/60CR engine
Engine type
No. of cyl.
L1
Wt.
mm
mm
mm
mm
8,615
7,290
3,195
5,360
106
6L48/60CR
7L48/60CR
9,435
8,110
3,195
5,360
119
8L48/60CR
10,460
8,930
3,325
5,360
135
9L48/60CR
11,425
9,895
3,325
5,360
148
12V48/60CR
12
10,760
8,915
4,700
5,355
189
14V48/60CR
14
11,760
9,915
4,700
5,355
213
16V48/60CR
16
13,100
10,915
4,700
5,355
240
18V48/60CR
18
14,100
11,915
4,700
5,355
265
All weights and dimensions are for
guidance only and apply to dry engines
without flywheel.
Minimum centreline distance for twin
engine installation:
In-line engine: 3,200 mm
V-type engine: 4,800 mm
More information available upon request.
Norwegian Jewel, one engine retrofitted to 12V48/60CR
11
MAN Diesel SE
86224 Augsburg
Germany
Phone +49 821 322-0
Fax +49 821 322-3382
marineengines-de@mandiesel.com
www.mandiesel.com
CopyrightMAN Diesel SE
Subject to modification in the interest of technical progress.
D2366372EN-N2 Printed in Germany KW9-08082
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