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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 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) • 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)
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
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
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))
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
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
Future work • ICP testing • Experimental outlines for AOCS abstracts