B 20 Biodiesel Oil Lubrication

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B 20 Biodiesel Oil Lubrication

  1. 1. Oil Lubrication for Modern Diesel Fuels National Biodiesel Board Technician Outreach Program Rachel Burton & David Stehouwer 2009
  2. 2. Emissions Regulation Drives Modern Oil Quality 1988 14.4 1990 1991 1994 1998 2000 2002 2010 0.80 0.33 0.134 0 2 4 6 8 10 12 NO x , g/kW-Hr Particulate, g/kW-Hr 8.05 6.7 6.7 5.4 3.3 1.5 0 . 013 14 16 2007 0.27 PC-11? CJ-4 CI-4 CH-4 CG-4 CF-4 CE
  3. 3. Each Generation of Oil Improved Performance <ul><li>More engine tests added </li></ul><ul><ul><li>Tests are more demanding </li></ul></ul><ul><ul><li>Costs are very high ($1.5 to 2.0 Million for a new oil) </li></ul></ul><ul><li>Additive treat levels go up </li></ul><ul><ul><li>Lube ash content increases </li></ul></ul><ul><li>DPF (Diesel Particulate Filters) required for 2007 standards </li></ul><ul><ul><li>Trap exhaust soot to meet particulate standard </li></ul></ul><ul><ul><li>Traps get plugged by lube ash </li></ul></ul><ul><li>CJ-4 is first API Category to limit composition </li></ul><ul><ul><li>Now the oils must give higher performance with lower ash </li></ul></ul>
  4. 4. DPF’s Limit Lube Ash Ash Volatility Phosphorus Sulfur CJ-4 2007 API CI-4 2002 1.5-1.3% Range CDPF No After-Treatment 1.0% Range
  5. 5. Engine Durability Tests for CJ-4 Oil Demand Increased Performance Caterpillar C-13 Oil Consumption Blow-By and Piston Deposits Cummins ISB Slider Valve Train Wear and After-Treatment Mack T-12 Power Cylinder Wear and Oxidation Cummins ISM Power Cylinder, Valve Train Wear, Filter Life and Sludge Control
  6. 6. What do these tests mean for Biodiesel <ul><li>All of these new tests to define oil quality run on 15 ppm S fuel that is carefully controlled </li></ul><ul><li>There were real questions about the effect of B20 on lube performance </li></ul><ul><li>Why? </li></ul><ul><li>How did NBB help to answer these questions? </li></ul>
  7. 7. Engine Lube Tests with B-20 <ul><li>Objective: To determine if there are any effects on lubricant performance from the use of B-20 fuel </li></ul><ul><li>Plan: Run standard engine tests with B-20 using reference oils to compare lube performance with # 2 diesel </li></ul><ul><li>Fuel: B-20 blended from PC-10 fuel and B-100 such that the blend meets D 7467 </li></ul>
  8. 8. Summary: Engine Test Parameters <ul><li>Examination of the control parameters for these engine tests: </li></ul><ul><ul><li>All wear data within acceptance limits </li></ul></ul><ul><ul><ul><li>No evidence of unique, higher wear type of soot </li></ul></ul></ul><ul><ul><li>All controlled piston / ring deposits within acceptance limits </li></ul></ul><ul><ul><li>Low temperature viscometrics not an issue </li></ul></ul><ul><li>Non rated engine parts appeared clean and free of sludge </li></ul><ul><li>General trend toward higher TAN </li></ul><ul><ul><li>Without corresponding loss of TBN </li></ul></ul><ul><ul><li>Only Pb Corrosion and T 12 oxidation are worse than acceptance limits </li></ul></ul>
  9. 9. Bottom Line <ul><li>Engine / Fuel / Lubricant are inter-related </li></ul><ul><li>Current lubricants protect the engines operating on B20 for most applications </li></ul><ul><li>Oil companies & OEM’s recommend a premium lubricant with on oil analysis program to protect your engines with B-20 </li></ul><ul><ul><li>Watch trends in TAN & TBN as well as used oil lead values </li></ul></ul>

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