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Research Updates

Research Updates. Kapila Wadumesthrige 02/19/08. Engine testing (Kapila, Sidong, Mark and Nick) Total run time = 205 hrs Total testing time ( 30 kW (60% of Full Load, ULSD) = 121 hrs 119 hrs of testing remaining ( 3 weeks, 8 hrs/day)

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Research Updates

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  1. Research Updates Kapila Wadumesthrige 02/19/08

  2. Engine testing(Kapila, Sidong, Mark and Nick) • Total run time = 205 hrs • Total testing time ( 30 kW (60% of Full Load, ULSD) = 121 hrs • 119 hrs of testing remaining ( 3 weeks, 8 hrs/day) • Need more testing time per day (~11 hrs, 7.30 AM to 6.30PM) • Set-up a schedule for engine start and stop • Engine testing at hold now. (Contaminated Air filter) • NALCO 5403 Corrosion Inhibitor/Lubricity improver for S-8 Heavy Aromatic Naphtha 30.0 – 60.0 % (w/w) Naphthalene 1.0 – 5.0 % (w/w) 1, 2, 4-Trimethylbenzene 1.0 – 5.0 % (w/w)

  3. Investigation of DCN • Paper Revised • Accelerated oxidation under reflux condition (Chay finished Cotton Seed, Wacker Soy and BDI Soy BD tests) • FAME analysis (GC-MS) • IR / UV-VIS and TAN Analysis of oxidative products

  4. DCN Vs. Oxidation time

  5. FAME profile of Oxidized CSO BD

  6. SBO BD BDI Vs. Wacker

  7. Visible Spectra of Oxidized SBO (w) BD

  8. Oxidative Products (GC-MS) • From peaks at first 7 min elution time (SBO BD (w) • MS fragments assigned with NIST data library • 210 min Oxidation • 2-methylheptanoic acid • 2-methylhexanoic acid • Methyl octanoate, methyl heptanoate, Methyl-4-methyl pentanoate • 60 min • Hexagol • Propanoic acid 2(methoxy methoxy) • Propanal • 20 min • Heptaethylene glycol • Methyl-3-methoxy propanoate • Hexagol Change GC-MS Method

  9. Cetane Improvers Vs. Antioxidants • FAME oxidation [O] OOH Allylic carbon (bis allylic Hydrogen –CH2) Hydroperoxide Antioxidants (Scavenge Free Radicals) Prevent Chain Breaking (Tochopherol) Hydroperoxide decomposers (Thiol compounds, ZDDP) Cetane Improvers (Initiate Free Radical Mechanism) Nitrate compounds (2-ethyl-hexyl nitrate (EHN) Peroxide compounds (di-tert-butyl peroxide (DTBP))

  10. Future work • Antioxidants and cetane improvers act against each other • Cetane improvers in B20 (ULSD) may help oxidize biodiesel and degradation of antioxidants • Study the effect of ULSD cetane improvers on FAME oxidation • Special ULSD additives for biodiesel blending

  11. Lubricity • Mahbuba is writing a paper • Soot acts as an abrasive material • Lubricating properties of engine oil contaminated with Soot. • Any soot in return fuel? • Soot in Fuel Injection Systems? • Literature search

  12. Future work • ICP testing • Experimental outlines for AOCS abstracts

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