A Four-Stroke Homogeneous Charge Compression Ignition Engine Simulation for Combustion and Performance Studies

Fiveland, Scott B.; Assanis, Dennis N.

doi:10.4271/2000-01-0332

Cited by 115 publications

(38 citation statements)

References 19 publications

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“…The gas exchange during intake and exhaust processes is calculated by a one-dimensional quasi-steady flow model [6,25]. The intake and exhaust system pressures are taken from experimental data.…”

Section: Gas Exchangementioning

confidence: 99%

“…Therefore, the biggest advantage of single-zone model is that the computational cost is low. However, since it ignores the inhomogeneity in composition and temperature inside cylinder, the combustion duration is usually underestimated and peak pressure is overpredicted [6]. In addition, start of combustion cannot be correctly predicted at some extreme conditions, such as extremely lean and high Exhaust Gas Recirculation (EGR) conditions.…”

Section: Introductionmentioning

confidence: 99%

“…In a single-zone model, the entire cylinder is treated as a homogeneous reactor with a variable volume [3,[5][6][7]. Therefore, the biggest advantage of single-zone model is that the computational cost is low.…”

Section: Introductionmentioning

confidence: 99%

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A Study on the Performance of Combustion in a HCCI Engine Using n-Heptane by a Multi-Zone Model

Guo

Neill

2009

ASME 2009 Internal Combustion Engine Division Fall Technical Conference

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A study of n-heptane combustion in an HCCI engine was carried out by a multi-zone numerical simulation that covers a complete engine cycle. A reaction mechanism that includes 177 chemical species and 1638 reactions was used. The results of the numerical simulations were compared to existing experimental data for a range of air/fuel ratios, compression ratios and engine speeds.It is shown that the numerical simulation is able to reasonably capture the experimental cylinder pressure data over a wide range of operation conditions. It also provides a qualitative trend of CO emissions. The numerical simulation overpredicted the combustion at some operating conditions, such as at extremely high air/fuel ratios and higher engine speeds.Some differences were observed between the experimental and numerical data for NO X emissions. The numerical simulation predicted a monotonic decrease in NO X emissions as air/fuel ratio increased or compression ratio decreased, while an increase in NO X emissions was observed experimentally when combustion became very weak at extremely high air/fuel ratios or low compression ratios. It is suggested that further experiments and numerical simulations should be performed to explain this discrepancy.

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Section: Gas Exchangementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Study on the Performance of Combustion in a HCCI Engine Using n-Heptane by a Multi-Zone Model

Guo

Neill

2009

ASME 2009 Internal Combustion Engine Division Fall Technical Conference

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“…This is because of the simplicity of zero-dimensional model and its ability to predict overall performance characteristics of the HCCI engines [15][16][17].…”

Section: Model Descriptionmentioning

confidence: 99%

Performance and Combustion Characteristics Analysis of HCCI Engine Operation with Diesel Like Fuels

Shahangian

Keshavarz

Jazayeri

2009

Oil & Gas Science and Technology - Rev. IFP

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Résumé -Analyse de performance et caractéristiques de combustion du moteur HCCI avec les carburants similaires au gasoil -La technologie HCCI est considérée comme une solution prometteuse pour réduire les émissions de polluants, mais seuls quelques prototypes expérimentaux exploitent ce concept. Dans la combustion HCCI de DME et n-heptane, on distingue deux phases de réaction d'allumage, la première à plutôt basse température et la deuxième à haute température. La seconde est responsable de l'essentiel des pertes thermiques. Dans cette étude, un modèle adimensionnel et thermocinétique de combustion à une zone est développé. Le logiciel MATLAB est utilisé pour prédire les caractéristiques des moteurs HCCI utilisant deux types de carburants diesel : le dimethylether et le n-heptane. Les effets de la température et de la pression d'admission, de la prise en charge des carburants et de l'addition des gaz EGR sur les caractéristiques de l'auto-allumage l'optimum de la combution et les performances des moteurs HCCI ont été considérés. Abstract -Performance and Combustion Characteristics Analysis of HCCI Engine Operation with Diesel Like Fuels -HCCI is considered a very promising solution to reduce engine pollutant emissions, however so far only experimental prototypes have been inspired by this concept. HCCI combustion of both DME and n-heptane fuels display a distinct two-stage ignition reaction with the first

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“…Over the past few decades, Homogeneous Charge Compression Ignition (HCCI) or Controlled Auto-Ignition (CAI) if it is fuelled with gasoline type of fuels has shown its potential of reducing NOx and particulate emissions while maintaining high thermal efficiency [1][2][3][4][5][6]. However, challenges remain to limit its practical applications.…”

Section: Introductionmentioning

confidence: 99%

A CFD Model with Optical Validation on In-cylinder Charge Performances of CAI Engines

Osei-Owusu

Chen

Ibrahim

et al. 2008

SAE Technical Paper Series

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A Four-Stroke Homogeneous Charge Compression Ignition Engine Simulation for Combustion and Performance Studies

Cited by 115 publications

References 19 publications

A Study on the Performance of Combustion in a HCCI Engine Using n-Heptane by a Multi-Zone Model

A Study on the Performance of Combustion in a HCCI Engine Using n-Heptane by a Multi-Zone Model

Performance and Combustion Characteristics Analysis of HCCI Engine Operation with Diesel Like Fuels

A CFD Model with Optical Validation on In-cylinder Charge Performances of CAI Engines

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