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Isotopic Tracing of Fuel Components in Particulate Matter from a Compression Ignition Engine Fueled with Ethanol-in-Diesel Blends.

DE200515013283

Publication Date	2001
Personal Author	Buchholz, B. A.; Cheng, A. S.; Dibble, R. W.
Page Count	16
Abstract	Accelerator Mass Spectrometry (AMs) was used to investigate the relative contribution to diesel engine particulate matter (PM) from the ethanol and diesel fractions of blended fuels. Four test fuel blends and a control diesel fuel baseline were investigated. The test fuels were comprised of 14C depleted diesel fuel mixed with contemporary grain ethanol (400 the 14C concentration of diesel). An emulsifier (Span 85) or cosolvent (butyl alcohol) was used to facilitate mixing. The experimental test engine was a 1993 Cummins B5.9 diesel rated at 175 hp at 2500 rpm. Test fuels were run at steady-state conditions of 1600 rpm and 210 ft-lbs, and PM samples were collected on quartz filters following dilution of engine exhaust in a mini-dilution tunnel. AMs analysis of the filter samples showed that the ethanol contributed less to PM relative to its fraction in the fuel blend. For the emulsified blends, 6.4% and 10.3% contributions to PM were observed for 11.5% and 23.0% ethanol fuels, respectively. For the cosolvent blends, even lower contributions were observed (3.8% and 6.3% contributions to PM for 12.5% and 25.0.% ethanol fuels, respectively). The distribution of the oxygen, not just the quantity, was an important factor in reducing PM emissions.
Keywords	Isotopes Diesel fuels Compression ignition engine Fuel carbon Emissions Isotope effect Tracers Alternate fuels Fuel tank emissions Biodiesel blends Diesel engine particulate matter Fuel blends
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200524

Isotopic Tracing of Fuel Components in Particulate Matter from a Compression Ignition Engine Fueled with Ethanol-in-Diesel Blends.

Isotopic Tracing of Fuel Components in Particulate Matter from a Compression Ignition Engine Fueled with Ethanol-in-Diesel Blends.
DE200515013283

Publication Date	2001
Personal Author	Buchholz, B. A.; Cheng, A. S.; Dibble, R. W.
Page Count	16
Abstract	Accelerator Mass Spectrometry (AMs) was used to investigate the relative contribution to diesel engine particulate matter (PM) from the ethanol and diesel fractions of blended fuels. Four test fuel blends and a control diesel fuel baseline were investigated. The test fuels were comprised of 14C depleted diesel fuel mixed with contemporary grain ethanol (400 the 14C concentration of diesel). An emulsifier (Span 85) or cosolvent (butyl alcohol) was used to facilitate mixing. The experimental test engine was a 1993 Cummins B5.9 diesel rated at 175 hp at 2500 rpm. Test fuels were run at steady-state conditions of 1600 rpm and 210 ft-lbs, and PM samples were collected on quartz filters following dilution of engine exhaust in a mini-dilution tunnel. AMs analysis of the filter samples showed that the ethanol contributed less to PM relative to its fraction in the fuel blend. For the emulsified blends, 6.4% and 10.3% contributions to PM were observed for 11.5% and 23.0% ethanol fuels, respectively. For the cosolvent blends, even lower contributions were observed (3.8% and 6.3% contributions to PM for 12.5% and 25.0.% ethanol fuels, respectively). The distribution of the oxygen, not just the quantity, was an important factor in reducing PM emissions.
Keywords	Isotopes Diesel fuels Compression ignition engine Fuel carbon Emissions Isotope effect Tracers Alternate fuels Fuel tank emissions Biodiesel blends Diesel engine particulate matter Fuel blends
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Lawrence Livermore National Lab., CA.; Department of Energy, Washington, DC.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200524