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Emissions Reduction with EPA Tier 4 and IMO Tier III

Harvey Gulf purchased two of GE’s Marine Solutions’ new EPA Tier 4 emissions-compliant medium-speed diesel engines for its latest multi-purpose field support vessel. Harvey Gulf provides offshore supply and multi-purpose support vessels for deep-water operations in the U.S. Gulf of Mexico. They are among the first customers to operate GE’s diesel engines that meet EPA Tier 4 emissions standards without SCR after-treatment or urea injection.

L250 and V250 EPA Tier 4i/IMO Tier III Emission Standards

GE's Marine Solutions is at the forefront of emissions reductions with its breakthrough non-SCR diesel technology that requires no urea-based after-treatment. This advanced technology reduces key emissions by more than 70% and enables in-engine compliance with upcoming EPA Tier 4i and IMO Tier III emission standards.

The non-SCR diesel engine technology will be available starting in 2014 on GE Marine’s L250 and V250 Series Diesel Engines, and is the result of an 8-year investment to help businesses worldwide comply with EPA and IMO emission regulations.

Learn how GE’s simplified marine solution complies with IMO III / EPA T4 emission levels,Click to read more.

Key benefits

  • Available on GE's Marine Solutions 8L250 and 12/16 cylinder V250 Series Diesel Engines ranging from 2,250kW to 4,650kW
  • Eliminates urea use and storage to preserve cargo and tank space
  • Requires no supplemental equipment or fluids, reducing capital and operating expenditures
  • Engines supported by an extensive global parts, distribution and service network
  • Engines can operate on fuels with sulphur levels up to ISO 8217:2010 MDO-DMB

L250 EPA Tier 4i/IMO Tier III MCR 

8L250 MDC

 

Rated speed

Rpm

900 100

MCR

bkW

2,250

2,500

Bhp

3,017

3,353

Maximum Continuous Rating (MCR):

Maximum speed and load conditions at which the engine is capable of operating continuously for an unlimited number of hours per year; between the normal maintenance intervals stated by GE, under stated ambient conditions, and with the maintenance prescribed by GE having been carried out.

L250 EPA Tier 4i/IMO Tier III Recommended Match Points

8L250 MDC
Application Types Rated Speed RPM 900 1,000
         
FPP Match Point bkW 2050 2250
Bhp 2749 3017
FPP-HT Match Point

bkW

1900 2150

Bhp

2548 2883
CPP/EPP-VS Match Point bkW 2250 2500
Bhp 3017 3353
CPP/EPP-CS Match Point bkW 2250 2500
Bhp 3017 3353

FPP-HT:

A vessel where the engine is used to power a fixed pitch propeller that does require extended max torque from the engine (examples: tug boats, tow boats, dredge pumps)

CPP / EPP - VS:

A vessel where the engine operates at a variable speed to power a controllable pitch or an electrically powered propeller

CPP / EPP - CS:

A vessel where the engine operates at a constant speed to power a controllable pitch or an electrically powered propeller

V250 EPA Tier 4i/ IMO Tier III Engine Specifications 

Engine data
Number of cylinders 12 16
Stroke cycle 4 4
Cylinder arrangement V V
Bore 250mm (9.8 in)

250mm (9.8 in)

Stroke  320mm (12.6 in)

320mm (12.6 in)

Compression ratio 15.0:1 15.0:1
Engine dimensions mm (in)
  12V250 16V250
Height w/deep sump 3636 (143)

4,066 (160)

Height w/ shallow sump

3,520 (138.6)

3,540 (139.4)

Length

5,284 (208)

6,234 (245.4)

Width

2,693 (106.3)

2,693 (106.3)

Crankshaft center line marine sump

1,077 (42.4)

1,161 (45.8)

Crankshaft center line to mounting feet

536 (21.1)

536 (21.1)

Exhaust diameter

610 (24.0)

610 (24.0)

Dry weight kg (lb)

26,450 (58,312)

35,270 (77,757)

V250 EPA Tier 4i/IMO Tier III MCR Ratings

  12V250 MDC 16V250 MDC
Rate Speed (Rpm) 900 1000 900 1000
MCR (bkW) 3150 3500 4200 4650
MCR (Bhp) 4224 4694 5632 6236

Maximum Continuous Rating (MCR):

Maximum speed and load conditions at which the engine is capable of operating continuously for an unlimited number of hours per year; between the normal maintenance intervals stated by GE, under stated ambient conditions, and with the maintenance prescribed by GE having been carried out.

V250 EPA Tier 4i/IMO Tier III Ratings

      12V250 MDC 16V250 MDC
Application Types Rated Speed Rpm 900 1000 900 1000
             
FPP Match Point bkW 2850 3150 3800 4200
Bhp 3822 4224 5096 5632
FPP-HT Match Point bkW 2700 3000 3550 3950
Bhp 3621 4023 4761 5297
CPP/EPP-VS Match Point  bkW 3150 3500 4200 4650
Bhp 4224 4694 5632 6236
CPP/EPP-CS Match Point bkW 3150 3500 4200 4650
Bhp 4224 4694 5632 6236

FPP-HT:

A vessel where the engine is used to power a fixed pitch propeller that does require extended max torque from the engine (examples: tug boats, tow boats, dredge pumps)

CPP / EPP - VS:

A vessel where the engine operates at variable speeds to power a controllable pitch or an electrically powered propeller

CPP / EPP - CS:

A vessel where the engine operates at a constant speed to power a controllable pitch or an electrically powered propeller

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