Practical Energy Conservation Tips for Diesel Propulsion Ships

• 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

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

iENCON Maintenance Tips

• Conduct corrective maintenance

• Combustion analyzing and trending

• Analyze & trend engine material condition

Maintenance Practices

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

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

iENCON Maintenance Tips

• Proper injection timing

• Bench test injectors

• Maintain fuel filters

• Keep fuel clean and water free

Fuel Injection & Fuel Conditioning

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

Questions