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原文传递 Emissions from Buses with DDC 6V92 Engines Using Synthetic Diesel Fuel

题名：	Emissions from Buses with DDC 6V92 Engines Using Synthetic Diesel Fuel
作者：	James Eberhardt;Stephen Goguen;Mridul Gautam;Donald W. Lyons;Nigel N. Clark;Keith Vertin;Paul Norton;
关键词：	33 ADVANCED PROPULSION SYSTEMS; 03 NATURAL GAS; 09 BIOMASS FUELS; BIOMASS; BUSES; CATALYTIC CONVERTERS; DIESEL ENGINES; DIESEL FUELS; ENGINES; FIELD TESTS; NATURAL GAS; NITROGEN; OXIDATION; PARTICULATES
摘要：	Synthetic diesel fuel can be made from a variety of feedstocks, including coal, natural gas and biomass. Synthetic diesel fuels can have very low sulfur and aromatic content, and excellent autoignition characteristics. Moreover, synthetic diesel fuels may also economically competitive with California diesel fuel if .roduced in large volumes. Previous engine laboratory and field tests using a heavy-duty chassis dynamometer indicate that synthetic diesel fuel made using the Fischer-Tropsch (F-T) catalytic conversion process is a promising alternative fuel, because it can be used in unmodified diesel engines, and can reduce exhaust emissions substantially. The objective of this study was a preliminary assessment of the emissions from older model transit operated on Mossgas synthetic diesel fuel. The study compared emissions from transit buses operating on Federal no. 2 Diesel fuel, Mossgas synthetic diesel (MGSD), and a 50/50 blend of the two fuels. The buses were equipped with unmodified Detroit Diesel 6V92 2-stroke diesel engines. Six 40-foot buses were tested. Three of the buses had recently rebuilt engines and were equipped with an oxidation catalytic converter. Vehicle emissions measurements were performed using West Virginia University's unique transportable chassis dynamometer. The emissions were measured over the Central Business District (CBD) driving cycle. The buses performed well on both neat and blended MGSD fuel. Three buses without catalytic converters were tested. Compared to their emissions when operating on Federal no. 2 diesel fuel, these buses emitted an average of 5%lower oxides of nitrogen (NOx) and 20%lower particulate matter (PM) when operating on neat MGSD fuel. Catalyst equipped buses emitted an average of 8%lower NOx and 31%lower PM when operating on MGSD than when operating on Federal no. 2 diesel fuel.
报告类型：	科技报告