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TECHNICAL PAPERS: Internal Combustion Engines

Study of High Load Operation Limit Expansion for Gasoline Compression Ignition Engines

[+] Author and Article Information
Koudai Yoshizawa, Atsushi Teraji, Hiroshi Miyakubo, Koichi Yamaguchi, Tomonori Urushihara

Nissan Research Center, Nissan Motor Co., Ltd., 1, Natsushima-cho, Yokosuka, Kanagawa 237-8523, Japan

J. Eng. Gas Turbines Power 128(2), 377-387 (Apr 03, 2006) (11 pages) doi:10.1115/1.1805548 History: Received June 10, 2003; Revised February 09, 2004; Online April 03, 2006
Copyright © 2006 by ASME
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References

Figures

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Distribution of combustion regions 14
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Schematic diagram of computational grids 18
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Ignition delay predicted with shell model 18
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Comparison of predicted and measured stable combustion regions
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Comparison of heat release rates
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Effect of engine speed on heat release rate profiles
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Schematic diagram of heat release rate pattern
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Correlation between predicted and measured dP/dθmax
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Correlation between mass burned, θ10–50, and COV of IMEP
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Effect of ignition timing, θ10, on HC, dP/dtmax and ηi (predicted)
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Effect of combustion timing, θ50, and mass burned, θ10–50, on stable combustion region (predicted)
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Effect of ignition timing, θ10, and mass burned, θ10–90, on ηi (predicted)
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Effect of combustion timing on pressure and heat release rate profile variation
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Effect of air-fuel ratio variation on pressure and heat release rate profiles
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Effect of inlet temperature variation on pressure and heat release rate profiles
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Comparison of ∑1/τ dt profiles (predicted)
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Temperature and ∑1/τ dt distributions 18
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Fuel distribution in the cylinder
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Calculated heat release rate of two-step combustion (predicted)
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Effect of ignition timing control with two-step combustion
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Engine configuration for SI-CI combustion
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Measured pressure and heat release rate profiles of SI-CI combustion
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Comparison of stable combustion region with SI-CI combustion and HCCI combustion

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