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Practical Energy Conservation Tips for Diesel Propulsion Ships
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• Use engine with higher efficiency
Selective Use of Main Engines
• Efficiency increases as load is increased• Avoid continuous idling of generator(s)
SSDG Operations
iENCON Operational Tips
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iENCON Operational Tips
• Diesel engines should be run at least 60-75% of max rated load
• Short periods of low loading is permissible, provided engine is brought to full or near full load on a regular basis
• Avoid loading engine with cold lube oil temps• Operation at full-rated power will require more
maintenance and frequent overhauls• Do not idle diesel engines unnecessarily for
long periods of time
Diesel Engines
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iENCON Maintenance Tips
• Conduct corrective maintenance
• Combustion analyzing and trending
• Analyze & trend engine material condition
Maintenance Practices
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iENCON Maintenance Tips
• Keep air intake filters clean to minimize pressure drop
• Consumption increases 0.5% for every 10o F (5o C) air temperature rise
• Monitor exhaust back pressure• 3.0” H2O pressure increase can cause 1% increase in
fuel consumption
• Low back pressure = turbocharger maximum efficiency
• Silencers and spark arrestors free of restrictions
Combustion Air & Exhaust Systems
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iENCON Maintenance Tips
• Exhaust smoke is a good indicator of potential problems
• Blue – Worn piston rings, liners, guides, etc.
• Black or gray – Incomplete combustion, improper fuel, high exhaust back pressure, restricted air inlet, malfunctioning turbocharger, faulty injectors, etc.
• White – Light load operations, water in the diesel fuel, operation at low jacket water temperature
Exhaust Smoke
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iENCON Maintenance Tips
• Proper injection timing
• Bench test injectors
• Maintain fuel filters
• Keep fuel clean and water free
Fuel Injection & Fuel Conditioning
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iENCON Maintenance Tips
• Maintain manufacturer’s specified temperature and pressure
• Maintain water chemistry
Engine Cooling Water Systems
• Clean oil at proper temperature• Routinely change oil filters• Run purifiers continuously• Lube oil sampling
Lube Oil Systems
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Questions