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Accession Number
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PB2012-114618
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Title
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Fuels to Enable Light-Duty Diesel Advanced Combustion Regimes.
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Publication Date
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Aug 2012
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Media Count
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121p
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Personal Author
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D. Carder G. Thompson H. Li J. Nuszkowski M. Gautam N. Clark R. Ryskamp S. Wayne
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Abstract
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The goal of the project is to investigate the effects that diesel fuel properties might have on the combustion, emissions, and performance characteristics of light-duty production engines during advanced combustion operation. To investigate the effect of fuel properties on advanced combustion, a comprehensive matrix of nine fuels with varying cetane number (CN), aromatic content, and 90 percent distillation temperature (T90) was utilized with a split injection control strategy and a single injection control strategy on a GM Z19DTH light-duty compression-ignition engine. A single engine operating condition consisting of a fixed engine speed of 2100 rpm and 2.5 bar brake mean effective pressure (BMEP) was utilized. A clear trend was observed between cetane number (CN) and hydrocarbon emissions. Fuels with high T90 and high aromatic content, exhibited the highest NOX in their respective CN categories of medium CN and high CN. Soot emissions were the highest for test fuels due to the high CN and high T90. The lowest BTW was observed possibly due to incomplete combustion caused by one test fuel's low CN and low volatility.
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Keywords
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Combustion
Diesel engines
Emission control
Fuels
Hydrocarbons
Ignition
Nitrogen oxides
Single injection
Soot
Split injection
Volatility
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Source Agency
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Coordinating Research Council
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NTIS Subject Category
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97K - Fuels
81A - Combustion & Ignition
81J - Reciprocation & Rotating Combustion Engines
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Corporate Author
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West Virginia Univ., Morgantown. Dept. of Mechanical and Aerospace Engineering.
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Document Type
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Technical report
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Title Note
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Final rept.
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NTIS Issue Number
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1226
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Contract Number
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N/A
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