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Emissions Characteristics of Soy Methyl Ester Fuels in an IDI Compression Ignition Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1995 by SAE International in United States
Annotation ability available
As part of an ongoing program to control the emissions of diesel-powered equipment used in underground mines, the U. S. Bureau of Mines evaluated exhaust emissions from a compression ignition engine using oxygenated diesel fuels and a diesel oxidation catalyst (DOC). The fuels include neat (100%) soy methyl ester (SME), and a blend of 30% SME (by volume) with 70% petroleum diesel fuel. A Caterpillar 3304 PCNA engine was tested for approximately 50 hours on each fuel. Compared with commercial low-sulfur diesel fuel (D2), neat SME increased volatile organic diesel particulate matter (DPM) but greatly decreased non-volatile DPM, for a net decrease in total DPM. The DOC further reduced volatile and total DPM NOx emissions were slightly reduced for the case of neat SME, but otherwise were not significantly affected.
Peak brake power decreased 9% and brake specific fuel consumption increased 13 to 14% for the neat methyl soyate because of its lower energy content compared with D2. An analysis of apparent heat release rates found that SME exhibited a shorter ignition delay and some part load reductions in premixed burn.
CitationMcDonald, J., Purcell, D., McClure, B., and Kittelson, D., "Emissions Characteristics of Soy Methyl Ester Fuels in an IDI Compression Ignition Engine," SAE Technical Paper 950400, 1995, https://doi.org/10.4271/950400.
Alternative Fuels for Low Emissions and Improved Performance in Ci and Heavy Duty Engines
Number: SP-1093 ; Published: 1995-04-01
Number: SP-1093 ; Published: 1995-04-01
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