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%

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Presentation transcript:

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

DCN Vs. Oxidation time

FAME profile of Oxidized CSO BD FAME %0 min10 min30 min60 min90 min120 min210 min C14: C16: C16: C18: C18: C18: C18: Total FAME

SBO BD BDI Vs. Wacker

Visible Spectra of Oxidized SBO (w) BD

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 OOH Allylic carbon (bis allylic Hydrogen –CH 2 ) [O] 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