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Effect of combustion chamber geometry on in-cylinder flows and equivalence ratio spread in a direct injection engine - A CFD analysis
Ballapu Harshavardhan,
Published in
2013
Volume: 330
   
Pages: 815 - 820
Abstract
In this study, a CFD analysis to evaluate effect of combustion chamber geometry on incylinder fluid flows and equivalence ratio spread in a Direct Injection Spark Ignition Engine (DISI) during intake and compression stroke has been carried out. The analysis has been carried out using "STAR-CD es-ice" software for four piston top profiles viz., flat piston, flat piston with a centre bowl, dome piston with a central bowl and pentroof type piston with an offset bowl at an engine speed of 1000rpm. For meshing the geometric model, polyhedral trimmed cell are adopted. The solution is obtained by solving conservation of mass, momentum and energy equations using SIMPLE algorithm. From the results, it is found that for DISI engine, flat piston is best suitable. © (2013) Trans Tech Publications, Switzerland.
About the journal
JournalApplied Mechanics and Materials
ISSN16609336
Open AccessNo
Concepts (19)
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    COMPRESSION STROKE
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    Conservation of mass
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    DIRECT INJECTION ENGINES
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    DIRECT INJECTION SPARK IGNITION ENGINES
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    Equivalence ratios
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    IN-CYLINDER FLOWS
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    TUMBLE RATIOS
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    Turbulent kinetic energy
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    Automation
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    Combustion chambers
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    Control
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    Direct injection
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    Engine cylinders
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    Engine pistons
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    Engines
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    Flow of fluids
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    Kinetics
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    Process control
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    Computational fluid dynamics