Development of a reduced mechanism of a three components surrogate fuel for the coal-to-liquid and diesel combustion simulation

A heat release correlation for oxygen-enriched diesel combustion is being developed through heat release analysis of cylinder pressure data from a single-cylinder diesel engine operating under various levels of oxygen enrichment. Results show that standard combustion correlations available in the literature do not accurately describe oxygen-enriched diesel combustion. A novel functional form is therefore proposed, which is shown to reproduce measured heat release profiles closely, under different operating conditions and levels of oxygen enrichment. The mathematical complexity of the associated curve-fitting problem is maintained at the same level of difficulty as for standard correlations. When the novel correlation is incorporated into a computer simulation of diesel engine operation with oxygen enrichment, the latter predicts pressure traces in excellent agreement with measured pressure data. This demonstrates the potential of the proposed combustion simulation to guide the application of oxygen-enriched technology successfully to a variety of multicylinder diesel systems.

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Reduced mechanism of soot formation—Applicationto natural gas-fueled diesel combustion

Symposium (International) on Combustion ◽

10.1016/s0082-0784(06)80730-7 ◽

1994 ◽

Vol 25 (1) ◽

pp. 941-948 ◽

Cited By ~ 27

Author(s):

Y. Yoshihara ◽

A. Kazakov ◽

H. Wang ◽

M. Frenklach

Keyword(s):

Natural Gas ◽

Soot Formation ◽

Diesel Combustion ◽

Reduced Mechanism ◽

Gas Fueled

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Experimental Validation of a 3-Component Surrogate for Sasol-IPK in Single Cylinder Diesel Engine and IQT

Volume 1: Large Bore Engines; Fuels; Advanced Combustion ◽

10.1115/icef2017-3660 ◽

2017 ◽

Author(s):

Samy A. Alkhayat ◽

Manan J. Trivedi ◽

Naeim A. Henein ◽

Sampad Mukhopadhyay ◽

Peter Schihl

Keyword(s):

Diesel Engine ◽

Ignition Delay ◽

Experimental Validation ◽

Peak Pressure ◽

Single Cylinder ◽

Pressure Peak ◽

Ignition Quality ◽

Surrogate Fuel ◽

Three Components

The goal of this investigation is to compare the validation of Sasol-IPK and its surrogate fuel in the IQT and in an actual diesel engine. The surrogate fuel is composed of three components (46% iso-cetane, 44% decalin and 10% n-nonane on a volume basis). IQT experiments were conducted as per ASTM D6890-10a. Engine experiments were conducted at 1500 RPM, two engine loads, and two injection timings. Analysis of the ignition delay, peak pressure, peak RHR and other combustion phasing parameters, showed a closer match in IQT than in the diesel engine. This investigation suggests that validation in a single cylinder diesel engine should be a part of the surrogate validation, particularly for low ignition quality fuels.

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