Diesel Combustion and Ignition Properties of Fuels with Different Volatile Fraction Constituents

Bair, Robert; Boggs, David L.; Borman, Gary L.; Foster, David E.

doi:10.4271/861539

SAE Technical Paper Series 1986

DOI: 10.4271/861539

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Diesel Combustion and Ignition Properties of Fuels with Different Volatile Fraction Constituents

Robert Bair

David L. Boggs

Gary L. Borman

et al.

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1987

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Cited by 6 publications

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“…The concept of these first experiments was to ignite a hot, lean homogeneous charge by compression. Such combustion had been previously shown (Bair, et al 1986) to be relatively free of cyclic variability and not to be dependent on turbulent flame propagation (so called "flameless" combustion). It was thought that such combustion would provide a decoupling of the fluid motions which influence heat transfer and the rate of combustion.…”

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“…The properties of these six test fuels are shown in Table 7.2.2. These six test fuels were then subjected to extensive testing.In the DOE funded woark Bair et al (1986) found no observable differences in the ignition delay, heat release and emission data for the six special test fuels when run in a high swirl, low injection pressure version of the TACOM/LABECO engine. The behavior of the engine was consistent with the inference that portions of the fuel spray vaporized completely and then ignited.…”

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Center for Advanced Propulsion Systems

Borman¹,

Corradini²,

Farrell³

et al. 1993

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Public reporting burden for this c011ection of informatio IS estimated to averaage I hour Per response. including the time lot reiew0g mstructions, searching existing data source%.gathern and maintainr th, data needed, and completing and reviewing the collection of information Send comments regarding this burden estimate or any other aspect of this collection Of information, including suggestions for reducing this burden. SUPPLEMENTARY NOTESThe view, opinions and/or findings contained in this report are those of the author(s) and should not be construed as an official Department of the Army position, policy, or decision, unless so designated by other documentation. 12a. DISTRIBUTION / AVAILABIUTY STATEMENT 12b. DISTRIBUTION CODEApproved for public release; distribution unlimited. ABSTRACT (Maximum 200 words)This final report covers a six year period of research conducted by the Engine Research Center. The objectives of the ERC are: 1) to train students in special areas of diesel research of interest to the Army and its industrial suppliers, 2) provide a source of consultation for the Army, 3) provide knowledge and research tools for solution of long range problems of interest to the Army, 4) provide solution methods for problems of immediate interest to the Army, 5) to identify and explore new technologies which have potential value to the Army. A brief account is given of how these objectives were addressed. Subjects covered are; faculty, facilities, publications, and research results. The research topic areas discussed are: engine modeling; canbustion, emissions and fuels; heat transfer; fluid mechanics; diesel sprays; lubrication, mechanical design and materials.14. SUBJECT Comparison between measured and predicted cylinder 36 pressure (left) and wall heat flux (right) for premixedcharge SI engine combustion using heat transfer model with (modified case) and without (original) the effect of compressibility and unsteadiness. Engine speed 1500 rev/min. 7.1.2Comparison between computed (dashed line) and 36 measured (solid line) cylinder pressures (left) and wall heat flux (right) for compression ignited, homogeneous charge engine combustion (engine speed 1200 rev/min, compression ratio 10.5, swirl ratio 1.8, equivalence ratio 0.4). 7.1.3Predicted pressure histories obtained by incorporating the 39 multistep Shell ignition model (Case 2) and the standard one-step Arrhenius kinetics model (Case 1). 7.1.4Intake flow computation using the unstructured grid 40 version of KIVA-3 for stationary valves. 7.1.5Calculated cylinder pressures with and without ignition at 44 100 rpm and initial air temperatures of 241 K and 298 K. Optical window relative position to the combustion 61 chamber(part 2 of 2). 7.2.9The instrumentation system. 62 7.2.10 Flame temperature and soot concentration factor KL at 63 three angular positions for window A (24, 25, 26-3). 7.2.11Flame temperature and soot concentration factor KL at 64 three angular positions for window B (24, 25, 26-3). 7.2.12Flame temperature and soot concentration facto...

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Center for Advanced Propulsion Systems

Borman¹,

Corradini²,

Farrell³

et al. 1993

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Diesel Fuel Ignition Quality as Determined in a Variable Compression Ratio, Direct-Injection Engine

Ryan¹

1987

SAE Technical Paper Series

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Diesel Fuel Ignition Quality as Determined in a Constant Volume Combustion Bomb

Ryan¹,

Stapper²

1987

SAE Technical Paper Series

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Diesel Combustion and Ignition Properties of Fuels with Different Volatile Fraction Constituents

Cited by 6 publications

References 6 publications

Center for Advanced Propulsion Systems

Center for Advanced Propulsion Systems

Diesel Fuel Ignition Quality as Determined in a Variable Compression Ratio, Direct-Injection Engine

Diesel Fuel Ignition Quality as Determined in a Constant Volume Combustion Bomb

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