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.
L250
MDA
fuel efficient
_cc781905-5cde-3194-bad_bb3b-136 Emissions compliant
compact power
_cc781905-5cde-3194-bb3b-13d6
_cc781905-5cde-3194 -bb3b-136bad5cf58d_ Easy to maintain
The new L250 diesel engine
GE's new L250 in-line engine offers a streamlined design that saves fuel and provides continuous power from 1498 to 2330 kW.
The L250 is specifically designed for marine applications with its engine mounted accessories for easy maintenance. Offers an average fuel economy of 9% compared to the V228 engine and is marine class compliant, meeting US EPA Tier 2 emission requirements and upgradeable to Tier 3 requirements - a proactive approach to fuel economy. fuel and emissions reduction that comes naturally to GE.
The engine, available in 6- and 8-cylinder models, also offers ease of recharging as its narrow in-line footprint takes into account the constraints of the marine engine room where space is at a premium.
The narrower frame uses a similar footprint to competitive engines for minimal design changes. 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.
components
Marine class. Built-in design.
robust mainframe
The L250 mainframe is a one-piece heavy-duty cast iron offering excellent vibration dampening characteristics and long-term stability to minimize line bore distortion More strength and rigidity are added by bolting together the main bearing caps both vertically and vertically. horizontally. The lube oil gallery and passages are cast or drilled into the frame to provide lubrication to all vital areas of the engine, with no pipe or hose connections inside the frame, helping to eliminate leaks or possible loss of lubrication.
turbocharger
Turbochargers designed and manufactured by GE maintain the highest degree of quality and reliability. GE's in-house development ensures that the turbocharger is properly matched to the engine in terms of efficiency, performance and mechanical packaging. Placed on both ends of the engine,
exhaust manifold
The multi-tube manifold provides increased transient response and better efficiency in pulse and constant pressure operation. It is modularized with identical piping and bellows sections for all out-of-the-box cylinder assemblies. Bellows sections help reduce temperature-induced stresses and vibration in the exhaust system.
intercooler andintake manifoldof air
The L250's combustion air intake system includes an intercooler mounted on the main frame between the turbo outlet and the intake manifold. This allows for lower fuel consumption, emissions and exhaust temperatures. For maintenance, the intercooler can be removed without disassembling other engine components.
exhaust-driven turbochargers feature air-cooled turbine intake housings to maximize available energy; Backward angled blade design and improved aerodynamics to achieve
high efficiency requirements; inductor designed exclusively to resist damage by foreign objects; generous oil film thickness, allowing the turbocharger to use the engine's oil system for lubrication; and thrust surfaces at the ends of the compressor and turbine to ensure a large thrust capacity to withstand transient impact loads.
Crankshaft and engine power train
The crankshaft is of high quality forged alloy steel. Drilled oil passages in the crankshaft allow oil to be supplied to the connecting rod bearings and pistons. A flywheel with ring gear for the starter is bolted directly to the crankshaft flange.
One-Piece Liners
The "stiff", "one-peace" and "mid-stop liner", have an integrated external water jacket that removes the possibility of water leaks. An anti-polishing ring provides a durable running surface, improving oil consumption and liner life. The upper third of the liner is cooled.
power sets
The power sets of
L250 are designed for
meet the demands of high
engine pressure at the same
time they comply with the strict
reliability requirements and
an assembly concept
easy to maintain. the set
of unitized cylinder allows
Fast changeovers and longer turnaround time
engine activity. Each
set is mounted directly
on the main chassis and includes the
coating set,
cylinder head, valves
intake and exhaust, valve linkage and a high pressure fuel injection pump and nozzle. This design allows for excellent flow paths for combustion, lower fuel consumption and reduced emissions.
camshafts
The L250 camshafts are made from sectional carbon steel forgings joined by bolted flanges, a design that simplifies component removal and replacement. Individual sections of the camshaft, rather than the entire camshaft, can be repaired 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 provide better lubrication and guidance for the piston as it travels within the liner. The design helps minimize oil consumption and exhaust, as well as prolong oil life.
connecting rod set
Forged steel connecting rods are exceptionally strong and exhibit high rigidity, which is beneficial over the life of the engine. Large bearing widths with optimized oil grooves also help improve oil film thickness and pressure, allowing for optimal performance and lower friction losses.
advanced EFI
Designed for greater efficiency at variable speeds and loads, the L250's electronic fuel injection features precise fuel control, increased pressure capability and refined timing. Optimization of cam profile, injection initiation, injection volumes and flows, and control algorithms have produced a relatively simple system proven to be reliable through extensive validation.
Specifications on the L250 engine
