Oversupply of water (i.e. 70%) tends to enhance the dilution of air charge, which may inhibit the burning rates and also increase friction losses.
The use of water injection in the combustion chamber appears an attractive option for NOx reduction. Potential issues, such as disintegration of the oil film, increased wearing rate, corrosion hazards and a possible increase in HC and CO emissions, require a further investigation.
8. REFERENCES
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LIST OF SYMBOLS
CA: Crankshaft angle
Pmax: Maximum pressure
dp/dθ: Pressure rise per degree crank angle
W/F: Water/fuel
dQ/dθ: Heat release rate per degree crank angle.
SFOC: Specific fuel oil consumption
