Technology

Benefits

Limitations

References

DWI

· Potential reduction of NO_x by an amount of 60%

· Can be applied for Medium Speed Marine Diesel Engine

· Increase the fuel consumption by 2% - 3%

[23]

Miller Cycle

· Increase efficiency of the engine

· Potential reduction of NO_x by an amount of 40% - 60%

· Requires high maintenance

· High cost

[24] [25] [26]

Scavenge Air Temperature

· Potential reduction of NO_x by an amount of 60%

· Reduce number and size of exhausts ports

· Cylinder head complex

· Additional maintenance is required

[27]

Exhaust Gas Recirculation (EGR)

· Allows NO_x emission reductions by 30%

· Low operating cost

· Cannot be employed at high loads because it would reduce peak power output

· Increase the production of PM

[28] [29]