© 2019 John Ratcliffe cc. All rights reserved.

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The Way Forward
Ensure Latest Tier/Stage Engines are used

  • Older engines should be change to at least TIER II – technology advances from non-certified engines to TIER II engines could reduce DPM values to as much as 52%

  • Current engine technology also reduces oil consumption, due to better sealing of the combustion process – leads to lower DPM

  • Fuel savings from current available engine technology reduces DPM

  • A fuel and oil balance set up in the Company Operating Procedure would be a good indicator to follow and prove to authorities that strategies are working

Initiate Engine Maintenance Programmes

  • Diesel with a sulphur content of 50ppm or less is recommended

  • This will have an immediate impact on the DPM levels

  • Ensure that the correct fuel is used when newer TIER engines are being used

  • Ensure that the diesel are properly cared for up to the point of decanting

    • Install Breathers

    • Pre-filtering of particles to 10µm or less will prevent “sticky” injectors – “Controlled combustion equals controlled DPM”

  • Use Fuel/Water separators

  • Proper storage

  • Dirty air filters cause diesel engines to run dirtier and waste fuel – higher DPM

  • Loss of clean air in the combustion process can lead to higher internal engine operating temperatures and reduce engine life – higher DPM

  • Monitor higher fuel and oil consumption

  • Monitor an increase in exhaust emissions

  • Blue smoke – higher oil consumption

Black smoke – incomplete combustion