Ge Appliances L250 Marine Engine Tier 3 Imo Ii Users Manual

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GE
Marine

Seaworthy power
GE’s new L250 inline diesel engine

imagination at work

		 GE’s L250

Built by one of the world’s largest manufacturers
				 of medium-speed diesel engines

	

		

Designed to save fuel and meet EPA Tier 2 emissions standards

Upgradeable to EPA Tier 3 emissions standards

A History of Performance
GE Transportation has been serving the

Along with the new L250 engine, GE’s family

transportation industry for more than a

of medium-speed engines include 8-, 12-

century. For nearly 50 years, we have

and 16-cylinder V configurations, all of

designed and built high-performance

which are EPA Tier 2 certified.

diesel engines and have become one
of the largest manufacturers of medium-

With more than 15,000 engines operating

speed engines in the world.

worldwide in some of the most challenging
industrial environments, GE’s medium-

GE Marine, a division of GE Transportation,

speed engines are dependable, long-lasting,

is one of the world’s leading manufacturers

durable and efficient. From tugboats

of marine products that help tackle the

in Turkey and fishing vessels in Peru to

most important challenges facing the

offshore construction vessels in Norway

marine industry today through integrated

and ferries in Texas, GE’s marine engines

solutions, breakthrough technologies

are supported by an extensive global parts,

and process innovations. You can rely on

distribution and service network.

GE’s experience, innovation and proven
performance to help you succeed.

	 Fuel-efficient.
				

Emissions-compliant.

			 Compact power.
					

Narrow footprint.

						 Easy to maintain.

The new L250 diesel engine
GE’s new L250 inline engine offers a streamlined
design that is fuel-efficient and delivers continuous power from 1498 to 2330 kw. The L250 is
specifically engineered for marine applications
with its accessories mounted on the engine for
maintenance ease.
The L250 offers an average 9% fuel savings when
compared to the V228 engine. The L250 is marineclass compliant, meeting U.S. EPA Tier 2 emissions
requirements and is upgradeable to Tier 3 requirements — a proactive approach to fuel savings and
emissions reduction that is natural to GE.
The engine, available in 6- and
8-cylinder models, also offers
ease of re-power as its narrow
inline footprint takes in mind
marine engine room constraints where space
is at a premium. The
narrower frame uses
a similar footprint as
competitive engines for
minimum design change.

GE designed the L250 engine based on the successful V250 engine platform using the Six Sigma
Quality design process. Together, with flexible installation and maintenance options, proven parts
performance and support from GE’s worldwide
distribution network, the L250 offers customers
reliability and limited downtime.

L250 Components

Marine class. Inline design.
Sturdy Mainframe
The L250’s mainframe is a rugged one-piece
iron casting, which provides excellent vibrationdampening characteristics and long-term stability
to minimize line bore distortion. Further strength
and rigidity are added by bolting main bearing caps
both vertically and horizontally. The lube-oil gallery
and passages are cast or drilled into the frame to
provide lubrication to all vital engine areas with no
pipe or hose connections within the frame, helping
eliminate leaks or possible loss of lubrication.
Turbocharger
GE-designed and manufactured turbochargers
maintain the highest degree of quality and
reliability. GE’s in-house development ensures the
turbocharger is properly matched to the engine in
terms of efficiency, performance and mechanical
packaging. Placed on either end of the engine, the
exhaust-driven turbochargers feature air-cooled
turbine inlet casings to maximize available energy;
backswept blade design and improved
aerodynamics to achieve high efficiency
requirements; uniquely designed
inducer to withstand foreign object
damage; generous oil-film thickness,
allowing the turbocharger to
use the engine oil system for
lubrication; and thrust surfaces at
both the compressor and turbine
ends to ensure a large thrustbearing capacity to withstand
transient impact loading.
Crankshaft and Engine Drive Train
The crankshaft is press-forged, high-quality
alloy steel. Oil passages drilled in the crankshaft
allow oil delivery to connecting rod bearings and
pistons. A flywheel with ring gear for the starting
motor is bolted directly to the crankshaft flange.

Exhaust Manifold
The multi-pipe manifold provides increased
transient response and better efficiency under pulse
and constant pressure operation. It is modularized
with identical piping and bellows sections for all
of the immediate cylinder assemblies. The bellows
sections help lower the thermal and vibrationinduced stresses on the exhaust system.
Intercooler and Air-Intake Manifold
The L250’s combustion air-intake system includes
one intercooler mounted on the mainframe
between the turbo outlet and air manifold inlet. This
allows for lower fuel consumption, emissions and
exhaust temperatures. For servicing, the intercooler
can be removed without dismantling other engine
components.
One-Piece Liners
The stiff, one-piece, mid-stop liner has
an integral external water jacket that
removes the possibility of water leaks.
An anti-polishing ring provides a durable
running surface, improving lube oil
consumption and liner life. The top onethird of the liner is cooled.

Power Assemblies
The L250’s power assemblies
are designed to meet the
high-pressure demands of
the engine while adhering to
strict reliability requirements
and an easy-to-maintain assembly
concept. Unitized cylinder
assembly enables quick changeouts and increased engine uptime.
Each assembly is mounted directly
to the mainframe and includes liner
assembly, cylinder head, intake
and exhaust valves, valve linkage and a
high-pressure fuel-injection pump and nozzle. This
design enables excellent flow paths for combustion,
lower fuel consumption and reduced emissions.

Camshafts
The camshafts on the L250 are made of sectional
carbon steel forgings joined by dowel-bolted
flanges, a design that simplifies component
removal and replacement. Individual sections of the
camshaft, rather than the entire camshaft, can be
serviced or replaced.

Pistons
Our pistons are ruggedly designed to accommodate
the high-peak firing pressure requirements of L250
engines. The pin and skirt components are also
designed to yield better piston lubrication and
guidance as it travels within the liner. The design
helps minimize oil consumption and blow-by as well
as lengthen oil life.

Advanced EFI
Designed for greater efficiency at varying speeds
and loads, the L250’s electronic fuel injection
features precise fuel control, increased pressure
capability and refined timing. Optimization of the
cam profile, injection start, injection volumes and
flows, and control algorithms have produced a
relatively simple system, proven reliable through
extensive validation.

Connecting Rod Assembly
The forged-steel connecting rods are exceptionally
strong and exhibit high stiffness, which is beneficial
during the engine’s lifetime. Large bearing widths
with optimized oil grooves also help improve oilfilm thickness and pressure, allowing for optimum
performance and lower friction losses.

L250 engine specifications
Engine Data
Number of cylinders
Stroke cycle
Cylinder arrangement
Bore
Stroke
Compression ratio
Power Output at 900 rpm
Continuous
Maximum
Power Output at 1000 rpm
Continuous
Maximum
Power Output at 1050 rpm
Continuous
Maximum
Engine Dimensions
Length
Width
Height w/deep sump
Height w/shallow sump
Crankshaft center line to deep sump
Crankshaft center line to shallow sump
Crankshaft center line to mounting feet
Exhaust diameter
Dry weight

6L250

8L250

6
4
inline
250 mm (9.84 in)
320 mm (12.60 in)
15.7

8
4
inline
250 mm (9.84 in)
320 mm (12.60 in)
15.7

1498 kw (2009 hp)
1648 kw (2210hp)

1998 kw (2679 hp)
2198 kw (2947 hp)

1664 kw (2232 hp)
1831 kw (2455 hp)

2219 kw (2976 hp)
2441 kw (3274 hp)

1748 kw (2344 hp)
1922 kw (2578 hp)

2330 kw (3125 hp)
2564 kw (3438 hp)

5095 mm (200 in)
2032 mm (80 in)
3363 mm (132 in)
2962 mm (116 in)
1341 mm (53 in)
940 mm (37 in)
308 mm (12 in)
457 mm (18 in)
15,909 kg (35,000 lbs)

5985 mm (235 in)
2032 mm (80 in)
3363 mm (132 in)
2962 mm (116 in)
1341 mm (53 in)
940 mm (37 in)
308 mm (12 in)
457 mm (18 in)
19,090 kg (42,000 lbs)

Dimensions and weights are approximate and include all on-engine accessories.

To learn more
Call us 24/7 at 1-866-656-8786 or +630-893-3344 or
e-mail us at ge.marinestationary@ge.com.

GE
Marine
getransportation.com

imagination at work
20140-A



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